rockbox/apps/plugins/superdom.c

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2006 Will Robertson
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
/* TODO list:
   - improve AI
     - buy/use nukes - DONE
     - build farms/factories
*/


#include "plugin.h"
#include "lib/display_text.h"
#include "lib/playback_control.h"
#include "lib/pluginlib_actions.h"
#include "pluginbitmaps/superdom_boarditems.h"

char buf[255];

/* key mappings */

#define SUPERDOM_OK PLA_SELECT
#define SUPERDOM_CANCEL PLA_CANCEL
#define SUPERDOM_RIGHT PLA_RIGHT
#define SUPERDOM_LEFT PLA_LEFT
#define SUPERDOM_UP PLA_UP
#define SUPERDOM_DOWN PLA_DOWN

#define SUPERDOM_RIGHT_REPEAT PLA_RIGHT_REPEAT
#define SUPERDOM_LEFT_REPEAT PLA_LEFT_REPEAT
#define SUPERDOM_UP_REPEAT PLA_UP_REPEAT
#define SUPERDOM_DOWN_REPEAT PLA_DOWN_REPEAT

/***** game settings *****/

/* Some defines for the prices */
#define PRICE_MEN 1
#define PRICE_MOVE 100
#define PRICE_TANK 300
#define PRICE_PLANE 600
#define PRICE_FARM 1150
#define PRICE_FACTORY 1300
#define PRICE_NUKE 2000

#define STRINGIZE_2(X) #X
#define STRINGIZE(X) STRINGIZE_2(X)

#define PRICE_MEN_STR STRINGIZE(PRICE_MEN)
#define PRICE_MOVE_STR STRINGIZE(PRICE_MOVE)
#define PRICE_TANK_STR STRINGIZE(PRICE_TANK)
#define PRICE_PLANE_STR STRINGIZE(PRICE_PLANE)
#define PRICE_FARM_STR STRINGIZE(PRICE_FARM)
#define PRICE_FACTORY_STR STRINGIZE(PRICE_FACTORY)
#define PRICE_NUKE_STR STRINGIZE(PRICE_NUKE)

/* surrender thresholds */
#define HUMAN_SURRENDER_THRESHOLD 15
#define COMPUTER_SURRENDER_THRESHOLD 15
#define COMPUTER_HARD_SURRENDER_THRESHOLD 25

/* AI settings */
#define AI_INVESTING_LEVEL 2
#define AI_BUILD_NUKES_LEVEL 3
#define AI_BUILD_INDS_FARMS_LEVEL 2

/* board size */
#define BOARD_SIZE 10
#define NUM_SPACES (BOARD_SIZE*BOARD_SIZE)
#define COLOUR_DARK 0
#define COLOUR_LIGHT 1

/* drawing presets */

#define MARGIN 5

#if (LCD_DEPTH >= 16)
#define MY_BITMAP_PART   rb->lcd_bitmap_transparent_part
#else
#define MY_BITMAP_PART   rb->lcd_mono_bitmap_part
#endif

#if LCD_WIDTH > LCD_HEIGHT
#define BOX_WIDTH ((LCD_WIDTH-(MARGIN*2))/BOARD_SIZE)
#define BOX_HEIGHT ((BOX_WIDTH*2)/3)

#else
#define BOX_HEIGHT ((LCD_HEIGHT-(MARGIN*2)-15)/BOARD_SIZE)
#define BOX_WIDTH ((BOX_HEIGHT*2)/3)

#endif

/* NUM_BOX HEIGHT and WIDTH are used for the number pad in the game.  The height
 *  calculation includes spacing for the text placed above and below the number
 *  pad (it divides by 6 instead of just 4).  The width calculation gives extra
 *  spacing on the sides of the pad too (divides by 5 instead of 3).
 */
#define NUM_BOX_HEIGHT  (LCD_HEIGHT/6)
#define NUM_BOX_WIDTH   (LCD_WIDTH/5)

#define NUM_MARGIN_X    (LCD_WIDTH-3*NUM_BOX_WIDTH)/2
#define NUM_MARGIN_Y    (LCD_HEIGHT-4*NUM_BOX_HEIGHT)/2

/* These parameters define the piece image dimensions, Stride is the total width
 *  of the bitmap.
 */
#define ICON_STRIDE     STRIDE(SCREEN_MAIN, BMPWIDTH_superdom_boarditems, BMPHEIGHT_superdom_boarditems)
#define ICON_HEIGHT     (BMPHEIGHT_superdom_boarditems/6)
#define ICON_WIDTH      (BMPWIDTH_superdom_boarditems/2)

enum {
    RET_VAL_OK,
    RET_VAL_USB,
    RET_VAL_QUIT_ERR, /* quit or error */
};

static void gen_interest(void);
static void init_resources(void);
static int select_square(void);
static void update_score(void);
static void gen_resources(void);
static void draw_cursor(void);
static void draw_board(void);

struct tile {
    signed int colour; /* -1 = Unset */
    bool tank;
    bool plane;
    bool nuke;
    bool ind;
    bool farm;
    int men;
};

struct resources {
    int cash;
    int food;
    int farms;
    int inds;
    int men;
    int tanks;
    int planes;
    int nukes;
    int bank;
    int moves;
};

static struct settings {
    int compstartfarms;
    int compstartinds;
    int humanstartfarms;
    int humanstartinds;
    int startcash;
    int startfood;
    int movesperturn;
    /* 1=easy 2=medium 3=hard */
    /* AI difficulty works like this:
       easy:
        - no movement
        - no investing
        - will build factories if it has none
       medium:
        - movement
        - investing
        - can build factories/farms if it has money
       hard:
        - can buy/use nukes
        - will hold out longer (surrender threshold 25)
    */
    int compdiff;
    bool spoil_enabled;
    bool persistent_units;
} superdom_settings;

static struct resources humanres;
static struct resources compres;
enum { GS_PROD, GS_MOVE, GS_WAR };
static int gamestate;

static struct cursor {
    int x;
    int y;
} cursor;

static struct tile board[BOARD_SIZE+2][BOARD_SIZE+2];

static const struct button_mapping *plugin_contexts[] = { pla_main_ctx };

static void init_board(void)
{
    int i,j;
    rb->srand(*rb->current_tick);
    for(i=0;i<12;i++)
    {  /* Hopefully about 50% each colour */
        for(j=0;j<BOARD_SIZE+2;j++)
        {
            if((i<1)||(j<1)||(i>BOARD_SIZE)||(j>BOARD_SIZE))
                board[i][j].colour = -1;   /* Unset */
            else
                board[i][j].colour = rb->rand()%2;
            board[i][j].tank = false;
            board[i][j].plane = false;
            board[i][j].nuke = false;
            board[i][j].ind = false;
            board[i][j].farm = false;
            board[i][j].men = 0;
        }
    }

    while(compres.farms < superdom_settings.compstartfarms)
    {
        i = rb->rand()%BOARD_SIZE + 1;
        j = rb->rand()%BOARD_SIZE + 1;
        if((board[i][j].colour == COLOUR_DARK) && (board[i][j].farm == false))
        {
            board[i][j].farm = true;
            compres.farms++;
        }
    }
    while(compres.inds < superdom_settings.compstartinds)
    {
        i = rb->rand()%BOARD_SIZE + 1;
        j = rb->rand()%BOARD_SIZE + 1;
        if((board[i][j].colour == COLOUR_DARK) && (board[i][j].ind == false))
        {
            board[i][j].ind = true;
            compres.inds++;
        }
    }
    while(humanres.farms < superdom_settings.humanstartfarms)
    {
        i = rb->rand()%BOARD_SIZE + 1;
        j = rb->rand()%BOARD_SIZE + 1;
        if((board[i][j].colour == COLOUR_LIGHT)&&(board[i][j].farm == false))
        {
            board[i][j].farm = true;
            humanres.farms++;
        }
    }
    while(humanres.inds < superdom_settings.humanstartinds)
    {
        i = rb->rand()%BOARD_SIZE + 1;
        j = rb->rand()%BOARD_SIZE + 1;
        if((board[i][j].colour == COLOUR_LIGHT) && (board[i][j].ind == false))
        {
            board[i][j].ind = true;
            humanres.inds++;
        }
    }
}

void draw_board(void)
{
    int i,j;
    rb->lcd_clear_display();
    for(i=1;i<=BOARD_SIZE;i++)
    {
        for(j=1;j<=BOARD_SIZE;j++)
        {
            if(board[i][j].colour == COLOUR_DARK)
            {
                rb->lcd_set_foreground(LCD_DARKGRAY);
            }
            else
            {
                rb->lcd_set_foreground(LCD_LIGHTGRAY);
            }
            rb->lcd_fillrect(MARGIN+(BOX_WIDTH*(i-1)),
                             MARGIN+(BOX_HEIGHT*(j-1)), BOX_WIDTH,
                             BOX_HEIGHT);
#if LCD_DEPTH != 16
            rb->lcd_set_drawmode(DRMODE_BG | DRMODE_INVERSEVID);
#endif
            if(board[i][j].ind)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, 0, ICON_STRIDE,
#if LCD_WIDTH > LCD_HEIGHT
                               MARGIN+(BOX_WIDTH*(i-1))+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+ICON_HEIGHT+1,
#else
                               MARGIN+(BOX_WIDTH*(i-1))+1+ICON_WIDTH,
                               MARGIN+(BOX_HEIGHT*(j-1))+1,
#endif
                               ICON_WIDTH, ICON_HEIGHT);
            }
            if(board[i][j].farm)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, ICON_HEIGHT,
                               ICON_STRIDE, MARGIN+(BOX_WIDTH*(i-1))+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+1,
                               ICON_WIDTH, ICON_HEIGHT);
            }
            if(board[i][j].tank)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, ICON_HEIGHT*2,
                               ICON_STRIDE, MARGIN+(BOX_WIDTH*(i-1))+ICON_WIDTH+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+ICON_HEIGHT+1,
                               ICON_WIDTH, ICON_HEIGHT);
            }
            if(board[i][j].men)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, ICON_HEIGHT*3,
#if LCD_WIDTH > LCD_HEIGHT
                               ICON_STRIDE, MARGIN+(BOX_WIDTH*(i-1))+ICON_WIDTH+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+1,
#else
                               ICON_STRIDE, MARGIN+(BOX_WIDTH*(i-1))+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+1+ICON_HEIGHT,
#endif
                               ICON_WIDTH, ICON_HEIGHT);
            }
            if(board[i][j].plane)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, ICON_HEIGHT*4,
#if LCD_WIDTH > LCD_HEIGHT
                               ICON_STRIDE,MARGIN+(BOX_WIDTH*(i-1))+ICON_WIDTH*2+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+ICON_HEIGHT+1,
#else
                               ICON_STRIDE,MARGIN+(BOX_WIDTH*(i-1))+ICON_WIDTH+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+ICON_HEIGHT*2+1,
#endif
                               ICON_WIDTH, ICON_HEIGHT);
            }
            if(board[i][j].nuke)
            {
                MY_BITMAP_PART(superdom_boarditems,
                               board[i][j].colour?ICON_WIDTH:0, ICON_HEIGHT*5,
#if LCD_WIDTH > LCD_HEIGHT
                               ICON_STRIDE,MARGIN+(BOX_WIDTH*(i-1))+ICON_WIDTH*2+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+1,
#else
                               ICON_STRIDE,MARGIN+(BOX_WIDTH*(i-1))+1,
                               MARGIN+(BOX_HEIGHT*(j-1))+ICON_HEIGHT*2+1,
#endif
                               ICON_WIDTH, ICON_HEIGHT);
            }
#if LCD_DEPTH != 16
            rb->lcd_set_drawmode(DRMODE_SOLID);
#endif
        }
    }
    rb->lcd_set_foreground(LCD_BLACK);
    /* Draw Horizontal lines */
    for(i=0;i<=BOARD_SIZE;i++)
    {
        rb->lcd_hline(MARGIN, MARGIN+(BOX_WIDTH*BOARD_SIZE), MARGIN+(BOX_HEIGHT*i));
    }
    /* Draw Vertical lines */
    for(i=0;i<=BOARD_SIZE;i++)
    {
        rb->lcd_vline(MARGIN+(BOX_WIDTH*i), MARGIN, MARGIN+(BOX_HEIGHT*BOARD_SIZE));
    }
    rb->lcd_update();
}

static int calc_strength(int colour, int x, int y)
{
    int a, b, score=0;
    for (a = -1; a < 2; a++)
    {
        for (b = -1; b < 2; b++)
        {
            if(board[x+a][y+b].colour==colour)
            {
                if(a && b) /* diagonally adjacent, give less influence */
                {
                    score += 5;
                    if(board[x + a][y + b].tank || board[x + a][y + b].farm)
                        score += 15;
                    if(board[x + a][y + b].plane || board[x + a][y + b].ind)
                        score += 20;
                    if(board[x + a][y + b].nuke)
                        score += 10;
                    if(board[x + a][y + b].men)
                        score += (board[x + a][y + b].men*133/1000);
                }
                else
                {
                    score += 10;
                    if(board[x + a][y + b].tank || board[x + a][y + b].farm)
                        score += 30;
                    if(board[x + a][y + b].plane || board[x + a][y + b].ind)
                        score += 40;
                    if(board[x + a][y + b].nuke)
                        score += 20;
                    if(board[x + a][y + b].men)
                        score += (board[x + a][y + b].men*133/1000);
                }
            }
        }
    }
    return score;
}

void gen_interest(void)
{
    /* Interest should be around 10% */
    int interest = 7+rb->rand()%6;
    humanres.bank = humanres.bank+(interest*humanres.bank/100);
    /* Different interest for AI player */
    interest = 7+rb->rand()%6;
    compres.bank = compres.bank+(interest*compres.bank/100);
}

void draw_cursor(void)
{
    rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
    rb->lcd_fillrect(MARGIN+((cursor.x-1)*BOX_WIDTH),
                     MARGIN+((cursor.y-1)*BOX_HEIGHT), BOX_WIDTH+1, BOX_HEIGHT+1);
    rb->lcd_set_drawmode(DRMODE_SOLID);
    rb->lcd_update();
}

void gen_resources(void)
{
    int inccash = 0;
    int incfood = 0;
    int ratecash = 0;
    int ratefood = 0;
    int i;
    gen_interest();
    /* Generate Human's resources */
    for(i=0;i<humanres.inds;i++)
    {
        inccash += (300+rb->rand()%200);
    }
    for(i=0;i<humanres.farms;i++)
    {
        incfood += (200+rb->rand()%200);
    }
    if(humanres.inds)
        ratecash = inccash/humanres.inds;
    if(humanres.farms)
        ratefood = incfood/humanres.farms;
    if(ratecash > 450)
    {
        if(ratefood > 350)
        {
            rb->splash(HZ*2, "Patriotism sweeps the land, all production"
                       " is up this year!");
        }
        else
        {
            rb->splash(HZ*2, "Factories working at maximum efficiency,"
                       " cash production up this year!");
        }
    }
    else if(ratecash > 350)
    {
        if(ratefood > 350)
        {
            rb->splash(HZ*2, "Record crop harvest this year!");
        }
        else if(ratefood > 250)
        {
            rb->splash(HZ*2, "Production continues as normal");
        }
        else
        {
            rb->splash(HZ*2, "Spoilage of crops leads to reduced farm"
                       " output this  year");
        }
    }
    else
    {
        if(ratefood > 350)
        {
            rb->splash(HZ*2, "Record crop harvest this year!");
        }
        else if(ratefood > 250)
        {
            rb->splash(HZ*2, "Factory unions introduced. Industrial"
                       " production is down this year.");
        }
        else
        {
            rb->splash(HZ*2, "Internet created. All production is down"
                       " due to time wasted.");
        }
    }
    humanres.cash += inccash;
    humanres.food += incfood;

    /* Generate Computer's resources */
    inccash = 0;
    incfood = 0;
    for(i=0;i<compres.inds;i++)
    {
        inccash += (300+rb->rand()%200);
    }
    for(i=0;i<compres.farms;i++)
    {
        incfood += (200+rb->rand()%200);
    }
    compres.cash += inccash;
    compres.food += incfood;
}

static void update_score(void)
{
    int strength;

    rb->lcd_setfont(FONT_SYSFIXED);
    rb->lcd_set_drawmode(DRMODE_BG|DRMODE_INVERSEVID);
    rb->lcd_fillrect(5,LCD_HEIGHT-20,105,20);
    rb->lcd_set_drawmode(DRMODE_SOLID);
    strength = calc_strength(COLOUR_LIGHT, cursor.x, cursor.y);
    rb->lcd_putsxyf(5,LCD_HEIGHT-20,"Your power: %d.%d",strength/10,strength%10);
    strength = calc_strength(COLOUR_DARK, cursor.x, cursor.y);
    rb->lcd_putsxyf(5,LCD_HEIGHT-10,"Comp power: %d.%d",strength/10,strength%10);
    rb->lcd_setfont(FONT_UI);
}

static int settings_menu(void)
{
    int selection = 0;

    MENUITEM_STRINGLIST(menu, "Super Domination Settings", NULL,
                        "Computer starting farms", "Computer starting factories",
                        "Human starting farms", "Human starting factories",
                        "Starting cash", "Starting food", "Computer difficulty","Food spoilage", "Persistent units", "Moves per turn");

    while(1)
    {
        switch(rb->do_menu(&menu, &selection, NULL, false))
        {
        case 0:
            rb->set_int("Computer starting farms", "", UNIT_INT,
                        &superdom_settings.compstartfarms, NULL,
                        1, 0, 5, NULL);
            break;
        case 1:
            rb->set_int("Computer starting factories", "", UNIT_INT,
                        &superdom_settings.compstartinds, NULL,
                        1, 0, 5, NULL);
            break;
        case 2:
            rb->set_int("Human starting farms", "", UNIT_INT,
                        &superdom_settings.humanstartfarms, NULL,
                        1, 0, 5, NULL);
            break;
        case 3:
            rb->set_int("Human starting factories", "", UNIT_INT,
                        &superdom_settings.humanstartinds, NULL,
                        1, 0, 5, NULL);
            break;
        case 4:
            rb->set_int("Starting cash", "", UNIT_INT,
                        &superdom_settings.startcash, NULL,
                        250, 0, 5000, NULL);
            break;
        case 5:
            rb->set_int("Starting food", "", UNIT_INT,
                        &superdom_settings.startfood, NULL,
                        250, 0, 5000, NULL);
            break;
        case 6:
        {
            static const struct opt_items difficulty_options[3]={
                                                           {"Easy", -1},
                                                           {"Intermediate", -1},
                                                           {"Hard", -1}
                                                         };
            static int sel=1;
            rb->set_option("Computer difficulty", &sel,
                           INT, difficulty_options, 3, NULL);
            superdom_settings.compdiff=sel+1;
            break;
        }
        case 7:
            rb->set_bool_options("Food spoilage", &superdom_settings.spoil_enabled, "Enabled",
                                                                  0, "Disabled", 0, NULL);
            break;
        case 8:
            rb->set_bool_options("Persistent units", &superdom_settings.persistent_units, "Enabled", 0,
                                 "Disabled", 0, NULL);
            break;
        case 9:
            rb->set_int("Moves per turn", "", UNIT_INT,
                        &superdom_settings.movesperturn, NULL,
                        1, 1, 5, NULL);
            break;
        case MENU_ATTACHED_USB:
            return RET_VAL_USB;
            break;
        case GO_TO_PREVIOUS:
            return RET_VAL_OK;
            break;
        }
    }
    return RET_VAL_OK;
}

static int superdom_help(void)
{
    static char* help_text[] = {
        "Super", "Domination", "is", "a", "turn-based", "strategy", "game,",
        "where", "the", "aim", "is", "to", "overpower", "the", "computer",
        "player", "by", "taking", "their", "territory.", "",
        "Each", "year", "you", "are", "allocated", "an", "amount", "of", "cash",
        "and", "food,", "depending", "on", "how", "many", "farms", "and",
        "factories", "you", "control.", "",
        "Use", "this", "cash", "and", "food", "to", "build", "and", "feed", "your",
        "army.", "Each", "tile", "has", "a", "strength,", "calculated", "by",
        "the", "ownership", "of", "surrounding", "tiles,", "and", "the", "type",
        "and", "number", "of", "troops", "on", "them.",
    };
#ifdef HAVE_LCD_COLOR
    rb->lcd_set_foreground(LCD_WHITE);
    rb->lcd_set_background(LCD_BLACK);
#endif
    if (display_text(ARRAYLEN(help_text), help_text, NULL, NULL, true))
        return RET_VAL_USB;
    return RET_VAL_OK;
}

static int start_menu(void)
{
    int selection = 0;

    MENUITEM_STRINGLIST(menu, "Super Domination Menu", NULL,
                        "Play Super Domination", "Settings",
                        "Help", "Playback Control", "Quit");

    while(1)
    {
        switch(rb->do_menu(&menu, &selection, NULL, false))
        {
        case 0:
            return RET_VAL_OK; /* start playing */
            break;
        case 1:
            if(settings_menu()==RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 2:
            if(superdom_help()==RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 3:
            if(playback_control(NULL))
                return RET_VAL_USB;
            break;
        case 4:
            return RET_VAL_QUIT_ERR;
            break;
        }
    }
    return RET_VAL_QUIT_ERR;
}

static int save_game(void)
{
    int fd;
    char savepath[MAX_PATH];

    rb->snprintf(savepath, sizeof(savepath), "/Savegame.ssg");
    if(rb->kbd_input(savepath, MAX_PATH))
    {
        DEBUGF("Keyboard input failed\n");
        return -1;
    }

    fd = rb->open(savepath, O_WRONLY|O_CREAT, 0666);
    DEBUGF("savepath: %s\n", savepath);
    if(fd < 0)
    {
        DEBUGF("Couldn't create/open file\n");
        return -1;
    }

    rb->write(fd, "SSGv3", 5);
    rb->write(fd, &gamestate, sizeof(gamestate));
    rb->write(fd, &humanres.cash, sizeof(humanres.cash));
    rb->write(fd, &humanres.food, sizeof(humanres.food));
    rb->write(fd, &humanres.bank, sizeof(humanres.bank));
    rb->write(fd, &humanres.planes, sizeof(humanres.planes));
    rb->write(fd, &humanres.tanks, sizeof(humanres.tanks));
    rb->write(fd, &humanres.men, sizeof(humanres.men));
    rb->write(fd, &humanres.nukes, sizeof(humanres.nukes));
    rb->write(fd, &humanres.inds, sizeof(humanres.inds));
    rb->write(fd, &humanres.farms, sizeof(humanres.farms));
    rb->write(fd, &humanres.moves, sizeof(humanres.moves));
    rb->write(fd, &compres.cash, sizeof(compres.cash));
    rb->write(fd, &compres.food, sizeof(compres.food));
    rb->write(fd, &compres.bank, sizeof(compres.bank));
    rb->write(fd, &compres.planes, sizeof(compres.planes));
    rb->write(fd, &compres.tanks, sizeof(compres.tanks));
    rb->write(fd, &compres.men, sizeof(compres.men));
    rb->write(fd, &compres.nukes, sizeof(compres.nukes));
    rb->write(fd, &compres.inds, sizeof(compres.inds));
    rb->write(fd, &compres.farms, sizeof(compres.farms));
    rb->write(fd, &compres.moves, sizeof(compres.moves));
    rb->write(fd, board, sizeof(board));
    rb->write(fd, &superdom_settings.compstartfarms, sizeof(int));
    rb->write(fd, &superdom_settings.compstartinds, sizeof(int));
    rb->write(fd, &superdom_settings.humanstartfarms, sizeof(int));
    rb->write(fd, &superdom_settings.humanstartinds, sizeof(int));
    rb->write(fd, &superdom_settings.startcash, sizeof(int));
    rb->write(fd, &superdom_settings.startfood, sizeof(int));
    rb->write(fd, &superdom_settings.movesperturn, sizeof(int));
    rb->close(fd);
    return 0;
}

static int ingame_menu(void)
{
    MENUITEM_STRINGLIST(menu, "Super Domination Menu", NULL,
                        "Return to game", "Save Game",
                        "Playback Control", "Quit");

    switch(rb->do_menu(&menu, NULL, NULL, false))
    {
    case 0:
        return RET_VAL_OK;
        break;
    case 1:
        if(!save_game())
            rb->splash(HZ, "Game saved");
        else
            rb->splash(HZ, "Error in save");
        break;
    case 2:
        if(playback_control(NULL))
            return RET_VAL_USB;
        break;
    case 3:
        return RET_VAL_QUIT_ERR;
        break;
    case MENU_ATTACHED_USB:
        return RET_VAL_USB;
        break;
    case GO_TO_PREVIOUS:
        return RET_VAL_OK;
        break;
    }
    return RET_VAL_OK;
}

static int get_number(char* param, int* value, int max)
{
    static const char *button_labels[4][3] = {
        { "1", "2", "3" },
        { "4", "5", "6" },
        { "7", "8", "9" },
        { "DEL", "0", "OK" }
    };
    int i,j,x=0,y=0;
    int height, width;
    int button = 0, ret = RET_VAL_OK;
    bool done = false;
    rb->lcd_clear_display();
    rb->lcd_getstringsize("DEL", &width, &height);
    if(width > NUM_BOX_WIDTH || height > NUM_BOX_HEIGHT)
        rb->lcd_setfont(FONT_SYSFIXED);
    /* Draw a 3x4 grid */
    for(i=0;i<=3;i++)
    {  /* Vertical lines */
        rb->lcd_vline(NUM_MARGIN_X+(NUM_BOX_WIDTH*i), NUM_MARGIN_Y,
                      NUM_MARGIN_Y+(4*NUM_BOX_HEIGHT));
    }
    /* Horizontal lines */
    for(i=0;i<=4;i++)
    {
        rb->lcd_hline(NUM_MARGIN_X, NUM_MARGIN_X+(3*NUM_BOX_WIDTH),
                      NUM_MARGIN_Y+(NUM_BOX_HEIGHT*i));
    }
    for(i=0;i<4;i++)
    {
        for(j=0;j<3;j++)
        {
            rb->lcd_getstringsize(button_labels[i][j], &width, &height);
            rb->lcd_putsxy(NUM_MARGIN_X+(j*NUM_BOX_WIDTH)+NUM_BOX_WIDTH/2-width/2,
                           NUM_MARGIN_Y+(i*NUM_BOX_HEIGHT)+NUM_BOX_HEIGHT/2-height/2,
                           button_labels[i][j]);
        }
    }
    rb->lcd_putsxyf(NUM_MARGIN_X+10, NUM_MARGIN_Y+4*NUM_BOX_HEIGHT+10,"%d",*value);
    rb->lcd_getstringsize(param, &width, &height);
    if(width < LCD_WIDTH)
        rb->lcd_putsxy((LCD_WIDTH-width)/2, (NUM_MARGIN_Y-height)/2, param);
    else
        rb->lcd_puts_scroll(0, (NUM_MARGIN_Y/height-1)/2, param);

    rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
    rb->lcd_fillrect(NUM_MARGIN_X+(NUM_BOX_WIDTH*x),
                     NUM_MARGIN_Y+(NUM_BOX_HEIGHT*y),
                     NUM_BOX_WIDTH+1, NUM_BOX_HEIGHT+1);
    rb->lcd_set_drawmode(DRMODE_SOLID);
    rb->lcd_update();

    while(!done)
    {
        button=pluginlib_getaction(-1, plugin_contexts, ARRAYLEN(plugin_contexts));
        rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
        rb->lcd_fillrect(NUM_MARGIN_X+(NUM_BOX_WIDTH*x),
                         NUM_MARGIN_Y+(NUM_BOX_HEIGHT*y),
                         NUM_BOX_WIDTH+1, NUM_BOX_HEIGHT+1);
        rb->lcd_set_drawmode(DRMODE_SOLID);
        switch(button)
        {
        case SUPERDOM_OK:
            if(y!=3)
            {
                *value *= 10;
                *value += button_labels[y][x][0] - '0';
            }
            else if(x==0)
            {
                *value /= 10;
            }
            else if(x==1)
            {
                *value *= 10;
            }
            else if(x==2)
            {
                done = true;
                break;
            }
            if ((unsigned) *value > (unsigned) max)
                *value = max;
            rb->lcd_set_drawmode(DRMODE_BG|DRMODE_INVERSEVID);
            rb->lcd_fillrect(0, NUM_MARGIN_Y+4*NUM_BOX_HEIGHT+10,
                             LCD_WIDTH, 30);
            rb->lcd_set_drawmode(DRMODE_SOLID);
            rb->lcd_putsxyf(NUM_MARGIN_X+10,NUM_MARGIN_Y+4*NUM_BOX_HEIGHT+10,
                            "%d", *value);
            break;
        case SUPERDOM_CANCEL:
            *value = 0;
            done = true;
            ret = RET_VAL_QUIT_ERR;
            break;
#if CONFIG_KEYPAD != IRIVER_H10_PAD
        case SUPERDOM_LEFT:
            if(x==0)
            {
                x=2;
            }
            else
            {
                x--;
            }
            break;
        case SUPERDOM_RIGHT:
            if(x==2)
            {
                x=0;
            }
            else
            {
                x++;
            }
            break;
#endif
        case SUPERDOM_UP:
            if(y==0)
            {
#if CONFIG_KEYPAD == IRIVER_H10_PAD
                if(x > 0)
                    x--;
                else
                    x=2;
#endif
                y=3;
            }
            else
            {
                y--;
            }
            break;
        case SUPERDOM_DOWN:
            if(y==3)
            {
#if CONFIG_KEYPAD == IRIVER_H10_PAD
                if(x < 2)
                    x++;
                else
                    x=0;
#endif /* CONFIG_KEYPAD == IRIVER_H10_PAD */
                y=0;
            }
            else
            {
                y++;
            }
            break;
        default:
            if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
            {
                done = true;
                ret = RET_VAL_USB;
            }
            break;
        }
        rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
        rb->lcd_fillrect(NUM_MARGIN_X+(NUM_BOX_WIDTH*x),
                         NUM_MARGIN_Y+(NUM_BOX_HEIGHT*y),
                         NUM_BOX_WIDTH+1, NUM_BOX_HEIGHT+1);
        rb->lcd_set_drawmode(DRMODE_SOLID);
        rb->lcd_update();
    }
    rb->lcd_setfont(FONT_UI);
    rb->lcd_scroll_stop();
    if (ret == RET_VAL_QUIT_ERR)
        rb->splash(HZ, "Cancelled");
    return ret;
}

static bool tile_has_item(int type, int x, int y)
{
    switch(type)
    {
    case 0:
        return (board[x][y].men > 0);
        break;
    case 1:
        return board[x][y].tank;
        break;
    case 2:
        return board[x][y].plane;
        break;
    case 3:
        return board[x][y].farm;
        break;
    case 4:
        return board[x][y].ind;
        break;
    case 5:
        return board[x][y].nuke;
        break;
    }
    return false;
}

static int buy_resources(int colour, int type, int x, int y, int nummen)
{
    const char *itemnames[][6] = {
        {
            "them",
            "the tank",
            "the plane",
            "the farm",
            "the industrial plant",
            "the nuke",
        },
        {
            "place men",
            "place a tank",
            "place a plane",
            "build a farm",
            "build an industrial plant",
            "place a nuke",
        },
        {
            NULL,
            "a tank",
            "a plane",
            "a farm",
            "an industrial plant",
            "a nuke",
        },
    };

    bool human = (colour == COLOUR_LIGHT);
    int price = 0;
    int temp;
    struct resources *res;

    if(human)
    {
        res = &humanres;
    }
    else
    {
        res = &compres;
    }
    switch(type)
    {
    case 0: /* men */
        price = PRICE_MEN*nummen;
        break;
    case 1: /* tank */
        price = PRICE_TANK;
        break;
    case 2: /* plane */
        price = PRICE_PLANE;
        break;
    case 3: /* Farm */
        price = PRICE_FARM;
        break;
    case 4: /* Factory */
        price = PRICE_FACTORY;
        break;
    case 5: /* nuke */
        price = PRICE_NUKE;
        break;
    }
    if(res->cash < price)
    {
        if(human)
            rb->splash(HZ, "Not enough money!");
        return RET_VAL_QUIT_ERR;
    }
    if(human)
    {
        rb->splashf(HZ, "Where do you want to place %s?", itemnames[0][type]);
        if((temp = select_square()) != RET_VAL_OK)
            return temp;
        x = cursor.x;
        y = cursor.y;
    }
    if(board[x][y].colour != colour)
    {
        if(human)
            rb->splashf(HZ, "Can't %s on enemy territory", itemnames[1][type]);
        return RET_VAL_QUIT_ERR;
    }
    if(type != 0 && tile_has_item(type, x, y))
    {
        if(human)
            rb->splashf(HZ, "There is already %s there", itemnames[2][type]);
        return RET_VAL_QUIT_ERR;
    }
    switch(type)
    {
    case 0:
        board[x][y].men += nummen;
        res->men += nummen;
        break;
    case 1:
        board[x][y].tank = true;
        res->tanks++;
        break;
    case 2:
        board[x][y].plane = true;
        res->planes++;
        break;
    case 3:
        board[x][y].farm = true;
        res->farms++;
        break;
    case 4:
        board[x][y].ind = true;
        res->inds++;
        break;
    case 5:
        board[x][y].nuke = true;
        res->nukes++;
        break;
    }
    res->cash -= price;

    draw_board();
    rb->sleep(HZ);

    return RET_VAL_OK;
}

static int buy_resources_menu(void)
{
    int selection = 0,nummen;

    MENUITEM_STRINGLIST(menu, "Buy Resources", NULL,
                        "Buy men ($" PRICE_MEN_STR ")", "Buy tank ($" PRICE_TANK_STR ")", "Buy plane ($" PRICE_PLANE_STR ")",
                        "Buy Farm ($" PRICE_FARM_STR ")", "Buy Factory ($" PRICE_FACTORY_STR ")",
                        "Buy Nuke ($" PRICE_NUKE_STR ")",
                        "Finish buying");

    while(1) {
        switch(rb->do_menu(&menu, &selection, NULL, false)) {
        case 0:
            nummen = 0;
            if(get_number("How many men would you like?", &nummen,
                          humanres.cash) == RET_VAL_USB)
                return RET_VAL_USB;
            if(!nummen)
                break;
            /* fall through */
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
            if(buy_resources(COLOUR_LIGHT, selection, 0, 0, nummen)== RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 6:
            return RET_VAL_OK;
            break;
        case MENU_ATTACHED_USB:
            return RET_VAL_USB;
            break;
        case GO_TO_PREVIOUS:
            return RET_VAL_OK;
            break;
        }
    }
    return RET_VAL_OK;
}

static int move_unit(int colour, int type, int fromx, int fromy,
                     int tox, int toy, int nummen)
{
    const char *itemnames[][3] = {
        {
            "troops",
            "the tank",
            "the plane",
        },
        {
            "any troops",
            "a tank",
            "a plane",
        },
        {
            "the troops",
            "the tank",
            "the plane",
        }
    };
    bool human = (colour == COLOUR_LIGHT);
    int temp;

    if(human)
    {
        rb->splashf(HZ, "Select where you want to move %s from",
                    itemnames[0][type]);
        if((temp = select_square()) != RET_VAL_OK)
            return temp;
        fromx = cursor.x;
        fromy = cursor.y;
    }
    if(board[fromx][fromy].colour != colour)
    {
        if(human)
            rb->splash(HZ, "That isn't your territory");
        return RET_VAL_QUIT_ERR;
    }
    if(!tile_has_item(type, fromx, fromy))
    {
        if(human)
            rb->splashf(HZ, "You don't have %s there", itemnames[1][type]);
        return RET_VAL_QUIT_ERR;
    }
    if(type == 0)
    {
        if(human)
        {
            nummen = board[fromx][fromy].men;
            if((temp = get_number("How many men do you want to move?", &nummen,
                                  nummen)) != RET_VAL_OK)
                return temp;
        }
        if(nummen > board[fromx][fromy].men)
        {
            if(human)
                rb->splash(HZ, "You don't have that many troops.");
            return RET_VAL_QUIT_ERR;
        }
    }
    if(human)
    {
        rb->splashf(HZ, "Select where you want to move %s to",
                    itemnames[2][type]);
        if((temp = select_square()) != RET_VAL_OK)
            return temp;
        tox = cursor.x;
        toy = cursor.y;
    }
    if((tox == fromx && toy == fromy)      ||
       board[tox][toy].colour != colour    ||
       (type != 2 && (abs(tox - fromx) > 1 ||
                      abs(toy - fromy) > 1)))
    {
        if(human)
            rb->splash(HZ, "Invalid move");
        return RET_VAL_QUIT_ERR;
    }
    if(type != 0 && tile_has_item(type, tox, toy))
    {
        if(human)
            rb->splashf(HZ, "There is already %s there", itemnames[1][type]);
        return RET_VAL_QUIT_ERR;
    }
    switch(type)
    {
    case 0:
        board[fromx][fromy].men -= nummen;
        board[tox][toy].men += nummen;
        break;
    case 1:
        board[fromx][fromy].tank = false;
        board[tox][toy].tank = true;
        break;
    case 2:
        board[fromx][fromy].plane = false;
        board[tox][toy].plane = true;
        break;
    }
    return RET_VAL_OK;
}

static int move_unit_menu(void)
{
    int selection = 0;

    MENUITEM_STRINGLIST(menu, "Move unit", NULL,
                        "Move men", "Move tank", "Move plane");
    switch(rb->do_menu(&menu, &selection, NULL, false))
    {
    case 0:
    case 1:
    case 2:
        switch(move_unit(COLOUR_LIGHT, selection, 0, 0, 0, 0, 0))
        {
        case RET_VAL_OK:
            humanres.moves--;
            break;
        case RET_VAL_USB:
            return RET_VAL_USB;
            break;
        }
        break;
    case MENU_ATTACHED_USB:
        return RET_VAL_USB;
    }
    return RET_VAL_OK;
}

static int launch_nuke(int colour, int nukex, int nukey, int targetx, int targety)
{
    bool human = (colour == COLOUR_LIGHT);
    int temp;
    struct resources *res;

    if(board[nukex][nukey].colour != colour)
    {
        if(human)
            rb->splash(HZ, "That isn't your territory");
        return RET_VAL_QUIT_ERR;
    }
    if(! board[nukex][nukey].nuke)
    {
        if(human)
            rb->splashf(HZ, "You don't have a nuke there");
        return RET_VAL_QUIT_ERR;
    }
    if(human)
    {
        rb->splash(HZ, "Select place to target with nuke");
        if((temp = select_square()) != RET_VAL_OK)
            return temp;
        targetx = cursor.x;
        targety = cursor.y;
    }
    if(human)
    {
        humanres.nukes--;
    }
    else
    {
        compres.nukes--;
    }
    board[nukex][nukey].nuke = false;

    if(board[targetx][targety].colour == COLOUR_LIGHT)
    {
        res = &humanres;
    }
    else
    {
        res = &compres;
    }
    res->men -= board[targetx][targety].men;
    res->tanks -= board[targetx][targety].tank;
    res->planes -= board[targetx][targety].plane;
    res->nukes -= board[targetx][targety].nuke;
    res->farms -= board[targetx][targety].farm;
    res->inds -= board[targetx][targety].ind;
    board[targetx][targety].men = 0;
    board[targetx][targety].tank = false;
    board[targetx][targety].plane = false;
    board[targetx][targety].ind = false;
    board[targetx][targety].nuke = false;
    board[targetx][targety].farm = false;
    /* TODO: Fallout carried by wind */
    draw_board();
    if(human)
        rb->sleep(HZ*2);
    else
        rb->sleep(HZ);
    return RET_VAL_OK;
}

static int movement_menu(void)
{
    int selection = 0, temp;

    MENUITEM_STRINGLIST(menu, "Movement", NULL,
                        "Move unit", "Buy additional moves ($" PRICE_MOVE_STR ")",
                        "Launch nuclear missile", "Check map",
                        "Finish moving", "Game menu");

    while(1)
    {
        switch(rb->do_menu(&menu, &selection, NULL, false))
        {
        case 0:
            if(humanres.moves)
            {
                if(move_unit_menu()==RET_VAL_USB)
                    return RET_VAL_USB;
            }
            else
            {
                rb->splash(HZ, "You have no more moves left."
                           " You can buy more for $" PRICE_MOVE_STR " each.");
            }
            break;
        case 1:
            if(humanres.cash > PRICE_MOVE)
            {
                humanres.moves++;
                humanres.cash -= PRICE_MOVE;
                rb->snprintf(buf, sizeof(buf), "You now have %d moves",
                             humanres.moves);
                rb->splash(HZ, buf);
            }
            else
            {
                rb->splash(HZ, "Not enough money!");
            }
            break;
        case 2:
            if(humanres.nukes==0)
            {
                rb->splash(HZ, "You do not have any nukes to launch");
            }
            else
            {
                rb->splash(HZ, "Select place to launch nuke from");
                switch(select_square())
                {
                case RET_VAL_OK:
                    if(launch_nuke(COLOUR_LIGHT, cursor.x, cursor.y,
                                   0, 0) == RET_VAL_USB)
                        return RET_VAL_USB;
                    break;
                case RET_VAL_USB:
                    return RET_VAL_USB;
                    break;
                }
            }
            break;
        case 3:
            if(select_square() == RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 4:
            return RET_VAL_OK;
            break;
        case 5:
            if((temp = ingame_menu()) != RET_VAL_OK)
                return temp;
            break;
        case MENU_ATTACHED_USB:
            return RET_VAL_USB;
            break;
        }
    }
    return RET_VAL_OK;
}

static const char* inventory_data(int selected_item, void * data,
                                  char * buffer, size_t buffer_len)
{
    (void)data;
    switch(selected_item)
    {
    case 0:
        rb->snprintf(buffer,buffer_len,"Men: %d", humanres.men);
        break;
    case 1:
        rb->snprintf(buffer,buffer_len,"Tanks: %d", humanres.tanks);
        break;
    case 2:
        rb->snprintf(buffer,buffer_len,"Planes: %d", humanres.planes);
        break;
    case 3:
        rb->snprintf(buffer,buffer_len,"Factories: %d", humanres.inds);
        break;
    case 4:
        rb->snprintf(buffer,buffer_len,"Farms: %d", humanres.farms);
        break;
    case 5:
        rb->snprintf(buffer,buffer_len,"Nukes: %d", humanres.nukes);
        break;
    case 6:
        rb->snprintf(buffer,buffer_len,"Cash: %d", humanres.cash);
        break;
    case 7:
        rb->snprintf(buffer,buffer_len,"Food: %d", humanres.food);
        break;
    case 8:
        rb->snprintf(buffer,buffer_len,"Bank: %d", humanres.bank);
        break;
    default:
        return NULL;
    }
    return buffer;
}

static int show_inventory(void)
{
    struct simplelist_info info;
    rb->simplelist_info_init(&info, "Inventory", 9, NULL);
    info.hide_selection = true;
    info.get_name = inventory_data;
    if(rb->simplelist_show_list(&info))
    {
        return RET_VAL_USB;
    }
    else
    {
        return RET_VAL_OK;
    }
}

static int production_menu(void)
{
    int selection = 0, temp;

    MENUITEM_STRINGLIST(menu, "Production", NULL,
                        "Buy resources", "Show inventory", "Check map",
                        "Invest money", "Withdraw money",
                        "Finish turn", "Game menu");

    while(1)
    {
        switch(rb->do_menu(&menu, &selection, NULL, false))
        {
        case 0:
            if(buy_resources_menu() == RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 1:
            if(show_inventory() == RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 2:
            if(select_square() == RET_VAL_USB)
                return RET_VAL_USB;
            break;
        case 3:
            temp = humanres.cash;
            if(get_number("How much do you want to invest?", &temp,
                          humanres.cash) == RET_VAL_USB)
                return RET_VAL_USB;
            if(temp > humanres.cash)
            {
                rb->splash(HZ, "You don't have that much cash to invest");
            }
            else
            {
                humanres.cash -= temp;
                humanres.bank += temp;
            }
            break;
        case 4:
            temp = humanres.bank;
            if(get_number("How much do you want to withdraw?", &temp,
                          humanres.bank) == RET_VAL_USB)
                return RET_VAL_USB;
            if(temp > humanres.bank)
            {
                rb->splash(HZ, "You don't have that much cash to withdraw");
            }
            else
            {
                humanres.cash += temp;
                humanres.bank -= temp;
            }
            break;
        case 5:
            return RET_VAL_OK;
            break;
        case 6:
            if((temp = ingame_menu()) != RET_VAL_OK)
                return temp;
            break;
        case MENU_ATTACHED_USB:
            return RET_VAL_USB;
            break;
        }
    }
    return RET_VAL_OK;
}

static void init_resources(void)
{
    humanres.cash = superdom_settings.startcash;
    humanres.food = superdom_settings.startfood;
    humanres.tanks = 0;
    humanres.planes = 0;
    humanres.nukes = 0;
    humanres.inds = 0;
    humanres.farms = 0;
    humanres.men = 0;
    humanres.bank = 0;
    humanres.moves = 0;
    compres.cash = superdom_settings.startcash;
    compres.food = superdom_settings.startfood;
    compres.tanks = 0;
    compres.planes = 0;
    compres.nukes = 0;
    compres.inds = 0;
    compres.farms = 0;
    compres.men = 0;
    compres.bank = 0;
    compres.moves = 0;
}

static int select_square(void)
{
    int button = 0;
    draw_board();
    draw_cursor();
    update_score();
#if LCD_WIDTH >= 220
    rb->lcd_setfont(FONT_SYSFIXED);
    rb->lcd_putsxyf(125, LCD_HEIGHT-20,"Cash: %d", humanres.cash);
    rb->lcd_putsxyf(125, LCD_HEIGHT-10,"Food: %d", humanres.food);
    rb->lcd_setfont(FONT_UI);
#endif
    rb->lcd_update();
    while(1)
    {
        button=pluginlib_getaction(-1, plugin_contexts, ARRAYLEN(plugin_contexts));
        switch(button)
        {
        case SUPERDOM_CANCEL:
            rb->splash(HZ, "Cancelled");
            return RET_VAL_QUIT_ERR;
            break;
        case SUPERDOM_OK:
            return RET_VAL_OK;
            break;
        case SUPERDOM_LEFT:
        case SUPERDOM_LEFT_REPEAT:
            draw_cursor(); /* Deselect the current tile */
            if(cursor.x>1)
            {
                cursor.x--;
            }
            else
            {
                cursor.x = BOARD_SIZE;
            }
            update_score();
            draw_cursor();
            break;
        case SUPERDOM_RIGHT:
        case SUPERDOM_RIGHT_REPEAT:
            draw_cursor(); /* Deselect the current tile */
            if(cursor.x<BOARD_SIZE)
            {
                cursor.x++;
            }
            else
            {
                cursor.x = 1;
            }
            update_score();
            draw_cursor();
            break;
        case SUPERDOM_UP:
        case SUPERDOM_UP_REPEAT:
            draw_cursor(); /* Deselect the current tile */
            if(cursor.y>1)
            {
                cursor.y--;
            }
            else
            {
#if CONFIG_KEYPAD == IRIVER_H10_PAD
                if(cursor.x > 1)
                    cursor.x--;
                else
                    cursor.x = BOARD_SIZE;
#endif
                cursor.y = BOARD_SIZE;
            }
            update_score();
            draw_cursor();
            break;
        case SUPERDOM_DOWN:
        case SUPERDOM_DOWN_REPEAT:
            draw_cursor(); /* Deselect the current tile */
            if(cursor.y<BOARD_SIZE)
            {
                cursor.y++;
            }
            else
            {
#if CONFIG_KEYPAD == IRIVER_H10_PAD
                if(cursor.x < BOARD_SIZE)
                    cursor.x++;
                else
                    cursor.x = 1;
#endif
                cursor.y = 1;
            }
            update_score();
            draw_cursor();
            break;
        default:
            if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
            {
                return RET_VAL_USB;
            }
        }
    }
}

static int killmen(int colour)
{
    bool human = (colour == COLOUR_LIGHT);
    int menkilled,i,j;
    int percent;
    if(human)
    {
        percent = (humanres.food*1000)/humanres.men;
        humanres.food = 0;
    }
    else
    {
        percent = (compres.food*1000)/compres.men;
        compres.food = 0;
    }
    menkilled = 0;
    for(i=1;i<=BOARD_SIZE;i++)
    {
        for(j=1;j<=BOARD_SIZE;j++)
        {
            if(board[i][j].colour == colour)
            {
                int nummen = ((board[i][j].men * percent)/1000);
                menkilled += board[i][j].men - nummen;
                board[i][j].men = nummen;
            }
        }
    }

    if(human)
        humanres.men -= menkilled;
    else
        compres.men -= menkilled;
    return menkilled;
}

/* return -1 if error, 1 if attack is succeeded, 0 otherwise */
static int attack_territory(int colour, int x, int y)
{
    bool human = (colour == COLOUR_LIGHT);
    int str_diff;

    if(board[x][y].colour == colour)
    {
        if(human)
            rb->splash(HZ, "You can't attack your own territory");
        return -1;
    }
    str_diff = calc_strength(COLOUR_DARK, x, y) -
        calc_strength(COLOUR_LIGHT, x, y);
    if(human)
    {
        str_diff = -str_diff;
    }
    if(str_diff > 0 || (str_diff == 0 && rb->rand()%2))
    {
        struct resources *offres, *defres;
        if(human)
        {
            offres = &humanres;
            defres = &compres;
        }
        else
        {
            offres = &compres;
            defres = &humanres;
        }
        defres->men -= board[x][y].men;
        defres->tanks -= board[x][y].tank;
        defres->planes -= board[x][y].plane;
        defres->nukes -= board[x][y].nuke;
        defres->farms -= board[x][y].farm;
        defres->inds -= board[x][y].ind;
        offres->farms += board[x][y].farm;
        offres->inds += board[x][y].ind;
        offres->nukes += board[x][y].nuke;
        board[x][y].colour = colour;
        if(!superdom_settings.persistent_units)
        {
            board[x][y].men = 0;
            board[x][y].tank = false;
            board[x][y].plane = false;
        }
        draw_board();
        if(human)
            rb->sleep(HZ*2);
        else
            rb->sleep(HZ);
        return 1;
    }
    else
    {
        if(human)
            rb->splash(HZ, "Your troops were unable to overcome"
                       " the enemy troops");
        else
            rb->splash(HZ*2, "The computer attempted to "
                       "attack, but the invasion was"
                       " pushed back");
        return 0;
    }
    return 0;
}

static void spoil_food(void)
{
    /* spoil 0-10% of food, different amounts for computer/player */
    int spoil_amount=humanres.food*(0.1*rb->rand()/RAND_MAX);
    if(spoil_amount)
        rb->splashf(2*HZ, "Spoilage claims %d units of food", spoil_amount);
    humanres.food-=spoil_amount;

    /* now for computer */
    spoil_amount=compres.food*(0.1*rb->rand()/RAND_MAX);
    compres.food-=spoil_amount;
}

static int war_menu(void)
{
    int selection = 0, temp;

    MENUITEM_STRINGLIST(menu, "War!", NULL,
                        "Select territory to attack",
                        "Finish turn", "Game menu");

    while(humanres.moves)
    {
        switch(rb->do_menu(&menu, &selection, NULL, false))
        {
        case 0:
            switch(select_square())
            {
            case RET_VAL_OK:
                if(attack_territory(COLOUR_LIGHT, cursor.x, cursor.y) >= 0)
                    humanres.moves--;
                break;
            case RET_VAL_USB:
                return RET_VAL_USB;
                break;
            }
            break;
        case 1:
            return RET_VAL_OK;
            break;
        case 2:
            if((temp = ingame_menu()) != RET_VAL_OK)
                return temp;
            break;
        }
    }
    return RET_VAL_OK;
}

struct threat {
    int x;
    int y;
    int str_diff;
};

static bool place_adjacent(bool tank, int x, int y)
{
    int type = (tank ? 1: 2);
    if(!buy_resources(COLOUR_DARK, type, x, y, 0))
    {
        return true;
    }
    if(!buy_resources(COLOUR_DARK, type, x-1, y, 0))
    {
        return true;
    }
    if(!buy_resources(COLOUR_DARK, type, x+1, y, 0))
    {
        return true;
    }
    if(!buy_resources(COLOUR_DARK, type, x, y-1, 0))
    {
        return true;
    }
    if(!buy_resources(COLOUR_DARK, type, x, y+1, 0))
    {
        return true;
    }
    return false;
}

static bool has_adjacent(int x, int y)
{
    if ((board[x][y].colour   == COLOUR_LIGHT) &&
       ((board[x-1][y].colour == COLOUR_DARK)  ||
        (board[x+1][y].colour == COLOUR_DARK)  ||
        (board[x][y+1].colour == COLOUR_DARK)  ||
        (board[x][y-1].colour == COLOUR_DARK)))
        return 1;
    else
        return 0;
}

static void find_adjacent(int x, int y, int* adj_x, int* adj_y)
{
    /* Finds adjacent squares, returning squares without tanks on them
     * in preference to those with them */
    if(board[x-1][y].colour == COLOUR_DARK)
    {
        *adj_x = x-1;
        *adj_y = y;
        return;
    }
    if(board[x+1][y].colour == COLOUR_DARK)
    {
        *adj_x = x+1;
        *adj_y = y;
        return;
    }
    if(board[x][y-1].colour == COLOUR_DARK)
    {
        *adj_x = x;
        *adj_y = y-1;
        return;
    }
    if(board[x][y+1].colour == COLOUR_DARK)
    {
        *adj_x = x;
        *adj_y = y+1;
        return;
    }
}

static void computer_allocate(void)
{
    /* Firstly, decide whether to go offensive or defensive.
     * This is primarily decided by the human player posing a threat to either
     * the computer's farms, factories or nukes */
    int i, j, k;
    bool offensive = true;
    struct threat threats[4];
    int numthreats = 0;
    int total_str_diff = 0;
    int numterritory = 0;
    int str_diff;
    int men_needed;
    struct threat targets[2];
    int numtargets;
    struct cursor adj;

    compres.cash += compres.bank;
    compres.bank = 0;
    for(i=1;i<=BOARD_SIZE;i++)
    {
        for(j=1;j<=BOARD_SIZE;j++)
        {
            if(board[i][j].colour == COLOUR_DARK)
            {
                numterritory++;
                str_diff = calc_strength(COLOUR_LIGHT,i,j) -
                    calc_strength(COLOUR_DARK,i,j);
                if(str_diff > 0 && (board[i][j].ind || board[i][j].farm || board[i][j].nuke))
                {
                    /* computer's farm/factory/nuke is being threatened */
                    if(numthreats < 3)
                    {
                        offensive = false;
                        threats[numthreats].x = i;
                        threats[numthreats].y = j;
                        threats[numthreats].str_diff = str_diff;
                        numthreats++;
                    }
                }
            }
            rb->yield();
        }
    }
    /* if the computer has no factories, build some ASAP */
    if(!compres.inds)
    {
        while(compres.cash >= PRICE_FACTORY && compres.inds < numterritory)
        {
            i = rb->rand()%BOARD_SIZE + 1;
            j = rb->rand()%BOARD_SIZE + 1;
            if(board[i][j].colour == COLOUR_DARK)
            {
                buy_resources(COLOUR_DARK, 4, i, j, 0);
            }
        }
    }
    if(superdom_settings.compdiff>=AI_BUILD_INDS_FARMS_LEVEL && compres.cash>=PRICE_FACTORY)
    {
        while(compres.cash>=PRICE_FACTORY)
        {
            if(compres.farms<compres.inds)
            {
                while(compres.farms<compres.inds && compres.cash>=PRICE_FARM)
                {
                    i = rb->rand()%BOARD_SIZE + 1;
                    j = rb->rand()%BOARD_SIZE + 1;
                    if(board[i][j].colour == COLOUR_DARK && !board[i][j].farm)
                    {
                        buy_resources(COLOUR_DARK, 3, i, j, 0);
                        break;
                    }
                }
            }
            else
            {
                while(compres.inds<compres.farms && compres.cash>=PRICE_FACTORY)
                {
                    i = rb->rand()%BOARD_SIZE + 1;
                    j = rb->rand()%BOARD_SIZE + 1;
                    if(board[i][j].colour == COLOUR_DARK && !board[i][j].ind)
                    {
                        buy_resources(COLOUR_DARK, 4, i, j, 0);
                        break;
                    }
                }
            }
        }
    }
    /* AI will buy nukes first if possible */
    if(compres.cash > PRICE_NUKE + PRICE_TANK && superdom_settings.compdiff>=AI_BUILD_NUKES_LEVEL)
    {
        while(compres.cash >= PRICE_NUKE && compres.nukes < numterritory)
        {
            i = rb->rand()%BOARD_SIZE + 1;
            j = rb->rand()%BOARD_SIZE + 1;
            if(board[i][j].colour == COLOUR_DARK)
            {
                buy_resources(COLOUR_DARK, 5, i, j, 0);
            }
            rb->yield();
        }
    }
    if(offensive)
    {
        /* The AI is going to go straight for the throat here and attack
         * the player's farms, nukes, and factories. The amount of cash
         * the AI has to spend will determine how many targets there are */
        if(compres.cash > 1200)
        {
            /* 1200 is a figure I pulled out of nowhere. Adjust as needed */
            numtargets = 2;
        }
        else
        {
            numtargets = 1;
        }
        /* Work out which target(s) to attack. They must have adjacent squares
         * owned by the computer. If none are found just place troops in
         * random places around the map until we run out of money */
        k = 0;
        for(i=1;i<=BOARD_SIZE;i++)
        {
            for(j=1;j<=BOARD_SIZE;j++)
            {
                if(has_adjacent(i,j) &&
                   (board[i][j].ind || board[i][j].farm || board[i][j].nuke))
                {
                    if(k<numtargets)
                    {
                        targets[k].x = i;
                        targets[k].y = j;
                        targets[k].str_diff =
                            calc_strength(COLOUR_LIGHT, i, j) -
                            calc_strength(COLOUR_DARK, i, j);
                        k++;
                    }
                }
                rb->yield();
            }
        }
        if(k == 0)
        {
            /* randomly place tanks */
            while(compres.cash >= PRICE_TANK && compres.tanks < numterritory)
            {
                i = rb->rand()%BOARD_SIZE + 1;
                j = rb->rand()%BOARD_SIZE + 1;
                if(board[i][j].colour == COLOUR_DARK)
                {
                    buy_resources(COLOUR_DARK, 1, i, j, 0);
                }
                rb->yield();
            }
        }
        else
        {
            for(i=0;i<k;i++)
            {
                str_diff = targets[i].str_diff;
                while(str_diff + 20 > 0 && compres.cash > 0)
                {
                    /* While we still need them keep placing men */
                    if(!place_adjacent(true, targets[i].x, targets[i].y))
                    {
                        find_adjacent(targets[i].x, targets[i].y,
                                      &adj.x, &adj.y);
                        men_needed = (str_diff + 20)*1000/133;
                        if(compres.cash < men_needed)
                        {
                            men_needed = compres.cash;
                        }
                        buy_resources(COLOUR_DARK, 0, adj.x, adj.y,
                                      men_needed);
                        break;
                    }
                    str_diff = calc_strength(COLOUR_LIGHT,
                                             targets[i].x, targets[i].y) -
                        calc_strength(COLOUR_DARK,
                                      targets[i].x, targets[i].y);
                }
            }
        }
    }
    else
    {
        /* Work out what to place on each square to defend it.
         * Tanks are preferential because they do not require food,
         * but if the budget is tight then we fall back onto troops.
         * Conversely if cash is not an issue and there are already tanks in
         * place planes will be deployed. We would like a margin of at least
         * 20 points to be safe. */

        for(i=0;i<numthreats;i++)
        {
            total_str_diff += threats[i].str_diff;
        }
        if((total_str_diff+20)*10 > compres.cash)
        {
            /* Not enough cash to accomodate all threats using tanks alone -
             * use men as a backup */
            for(i=0;i<numthreats;i++)
            {
                men_needed = ((threats[i].str_diff + 20)*1000)/133;
                if(compres.cash < men_needed)
                {
                    men_needed = compres.cash;
                }
                buy_resources(COLOUR_DARK, 0, threats[i].x, threats[i].y,
                              men_needed);
            }
        }
        else
        {
            /* Tanks it is */
            /* Enough money to pay their way by planes? */
            bool tank = ((total_str_diff+20)*15 >= compres.cash);
            for(i=0;i<numthreats;i++)
            {
                str_diff = threats[i].str_diff;
                while(str_diff + 20 > 0)
                {
                    if(!place_adjacent(tank, threats[i].x, threats[i].y))
                    {
                        /* No room for any more planes or tanks, revert to
                         * men */
                        find_adjacent(threats[i].x, threats[i].y,
                                      &adj.x, &adj.y);
                        men_needed = (str_diff + 20)*1000/133;
                        if(compres.cash < men_needed)
                        {
                            men_needed = compres.cash;
                        }
                        buy_resources(COLOUR_DARK, 0, threats[i].x,
                                      threats[i].y, men_needed);
                        break;
                    }
                    str_diff = calc_strength(COLOUR_LIGHT,
                                             threats[i].x, threats[i].y) -
                        calc_strength(COLOUR_DARK,
                                      threats[i].x, threats[i].y);
                }
            }
        }
    }
    /* no investing in easy mode */
    if(superdom_settings.compdiff>=AI_INVESTING_LEVEL)
    {
        compres.bank += compres.cash;
        compres.cash = 0;
    }
}

static int find_adj_target(int x, int y, struct cursor* adj)
{
    /* Find a square next to a computer's farm or factory owned by the player
     * that is vulnerable. Return 1 on success, 0 otherwise */
    if(board[x+1][y].colour == COLOUR_LIGHT &&
       calc_strength(COLOUR_LIGHT,x+1,y)<=calc_strength(COLOUR_DARK,x+1,y))
    {
        adj->x = x+1;
        adj->y = y;
        return 1;
    }
    if(board[x-1][y].colour == COLOUR_LIGHT &&
       calc_strength(COLOUR_LIGHT,x-1,y)<=calc_strength(COLOUR_DARK,x-1,y))
    {
        adj->x = x-1;
        adj->y = y;
        return 1;
    }
    if(board[x][y+1].colour == COLOUR_LIGHT &&
       calc_strength(COLOUR_LIGHT,x,y+1)<=calc_strength(COLOUR_DARK,x,y+1))
    {
        adj->x = x;
        adj->y = y+1;
        return 1;
    }
    if(board[x][y-1].colour == COLOUR_LIGHT &&
       calc_strength(COLOUR_LIGHT,x,y-1)<=calc_strength(COLOUR_DARK,x,y-1))
    {
        adj->x = x;
        adj->y = y-1;
        return 1;
    }
    return 0;
}

static void computer_movement(void)
{
    /* use nukes */
    if(superdom_settings.compdiff>=3)
    {
        struct cursor nukes[10]; /* 10 for now, change as needed */
        int nukes_back=0;
        if(compres.nukes>0)
        {
            for(int i=1;i<=BOARD_SIZE && nukes_back<compres.nukes && nukes_back<10;i++)
            {
                for(int j=1;j<BOARD_SIZE && nukes_back<compres.nukes && nukes_back<10 ;j++)
                {
                    if(board[i][j].nuke)
                    {
                        nukes[nukes_back].x=i;
                        nukes[nukes_back].y=j;
                        nukes_back++;
                    }
                    rb->yield();
                }
            }
            bool found_target=true;
            struct cursor adj;
            int next_nuke=0;
            /* first, use nukes for defence */
            while(found_target && next_nuke<nukes_back)
            {
                found_target = false;
                for(int i=1;i<=BOARD_SIZE && nukes_back<compres.nukes && nukes_back<10;i++)
                {
                    for(int j=1;j<=BOARD_SIZE && nukes_back<compres.nukes && nukes_back<10;j++)
                    {
                        if((board[i][j].colour == COLOUR_DARK)   &&
                           (board[i][j].farm || board[i][j].ind || board[i][j].nuke) &&
                           find_adj_target(i, j, &adj))
                        {
                            found_target = true;
                            rb->splashf(2*HZ, "Launching nuke for defence, from (%d, %d) to (%d, %d)", nukes[next_nuke].x, nukes[next_nuke].y, adj.x, adj.y);
                            launch_nuke(COLOUR_DARK, nukes[next_nuke].x, nukes[next_nuke].y, adj.x, adj.y);
                            next_nuke++;
                        }
                        rb->yield();
                    }
                }
            }

            /* if we still have any left over, use those for offence */
            found_target = true;
            while(found_target && next_nuke<nukes_back)
            {
                found_target = false;
                for(int i=1;i<=BOARD_SIZE;i++)
                {
                    for(int j=1;j<=BOARD_SIZE;j++)
                    {
                        if(board[i][j].colour == COLOUR_LIGHT    &&
                           (board[i][j].ind || board[i][j].farm || board[i][j].nuke) &&
                           (calc_strength(COLOUR_DARK, i, j) >= calc_strength(COLOUR_LIGHT, i, j)))
                        {
                            found_target = true;
                            rb->splashf(2*HZ, "Launching nuke for offence, nuke index %d", next_nuke);
                            launch_nuke(COLOUR_DARK, nukes[next_nuke].x, nukes[next_nuke].y, i, j);
                            next_nuke++;
                        }
                        rb->yield();
                    }
                }
            }

        }
    }
    /* TODO: move other units */
}

static void computer_war(void)
{
    /* Work out where to attack - prioritise the defence of buildings and nukes */
    int i, j;
    bool found_target = true;
    struct cursor adj;

    while(found_target)
    {
        found_target = false;
        for(i=1;i<=BOARD_SIZE;i++)
        {
            for(j=1;j<=BOARD_SIZE;j++)
            {
                if((board[i][j].colour == COLOUR_DARK)   &&
                   (board[i][j].farm || board[i][j].ind || board[i][j].nuke) &&
                   find_adj_target(i, j, &adj))
                {
                    found_target = true;
                    if(attack_territory(COLOUR_DARK, adj.x, adj.y) >= 0)
                    {
                        compres.moves--;
                        if(!compres.moves)
                            return;
                    }
                }
                rb->yield();
            }
        }
    }
    /* Defence stage done, move on to OFFENCE */
    found_target = true;
    while(found_target)
    {
        found_target = false;
        for(i=1;i<=BOARD_SIZE;i++)
        {
            for(j=1;j<=BOARD_SIZE;j++)
            {
                if(board[i][j].colour == COLOUR_LIGHT    &&
                   (board[i][j].ind || board[i][j].farm || board[i][j].nuke) &&
                   (calc_strength(COLOUR_DARK, i, j) >= calc_strength(COLOUR_LIGHT, i, j)))
                {
                    found_target = true;
                    if(attack_territory(COLOUR_DARK, i, j) >= 0)
                    {
                        compres.moves--;
                        if(!compres.moves)
                            return;
                    }
                }
                rb->yield();
            }
        }
    }
    /* Spend leftover moves wherever attacking randomly */
    found_target = true;
    while(found_target)
    {
        found_target = false;
        for(i=1;i<=BOARD_SIZE;i++)
        {
            for(j=1;j<=BOARD_SIZE;j++)
            {
                if(board[i][j].colour == COLOUR_LIGHT &&
                   (calc_strength(COLOUR_DARK, i, j)  >=
                    calc_strength(COLOUR_LIGHT, i, j)))
                {
                    found_target = true;
                    if(attack_territory(COLOUR_DARK, i, j) >= 0)
                    {
                        compres.moves--;
                        if(!compres.moves)
                            return;
                    }
                }
                rb->yield();
            }
        }
    }
}

static int load_game(const char* file)
{
    int fd;

    fd = rb->open(file, O_RDONLY);
    if(fd < 0)
    {
        DEBUGF("Couldn't open savegame\n");
        return -1;
    }
    rb->read(fd, buf, 5);
    if(rb->strcmp(buf, "SSGv3"))
    {
        rb->splash(HZ, "Invalid/incompatible savegame");
        return -1;
    }
    rb->read(fd, &gamestate, sizeof(gamestate));
    rb->read(fd, &humanres.cash, sizeof(humanres.cash));
    rb->read(fd, &humanres.food, sizeof(humanres.food));
    rb->read(fd, &humanres.bank, sizeof(humanres.bank));
    rb->read(fd, &humanres.planes, sizeof(humanres.planes));
    rb->read(fd, &humanres.tanks, sizeof(humanres.tanks));
    rb->read(fd, &humanres.men, sizeof(humanres.men));
    rb->read(fd, &humanres.nukes, sizeof(humanres.nukes));
    rb->read(fd, &humanres.inds, sizeof(humanres.inds));
    rb->read(fd, &humanres.farms, sizeof(humanres.farms));
    rb->read(fd, &humanres.moves, sizeof(humanres.moves));
    rb->read(fd, &compres.cash, sizeof(humanres.cash));
    rb->read(fd, &compres.food, sizeof(humanres.food));
    rb->read(fd, &compres.bank, sizeof(humanres.bank));
    rb->read(fd, &compres.planes, sizeof(humanres.planes));
    rb->read(fd, &compres.tanks, sizeof(humanres.tanks));
    rb->read(fd, &compres.men, sizeof(humanres.men));
    rb->read(fd, &compres.nukes, sizeof(humanres.nukes));
    rb->read(fd, &compres.inds, sizeof(humanres.inds));
    rb->read(fd, &compres.farms, sizeof(humanres.farms));
    rb->read(fd, &compres.moves, sizeof(humanres.moves));
    rb->read(fd, board, sizeof(board));
    rb->read(fd, &superdom_settings.compstartfarms, sizeof(int));
    rb->read(fd, &superdom_settings.compstartinds, sizeof(int));
    rb->read(fd, &superdom_settings.humanstartfarms, sizeof(int));
    rb->read(fd, &superdom_settings.humanstartinds, sizeof(int));
    rb->read(fd, &superdom_settings.startcash, sizeof(int));
    rb->read(fd, &superdom_settings.startfood, sizeof(int));
    rb->read(fd, &superdom_settings.movesperturn, sizeof(int));
    rb->close(fd);
    return 0;
}

static void default_settings(void)
{
    superdom_settings.compstartfarms = 1;
    superdom_settings.compstartinds = 1;
    superdom_settings.humanstartfarms = 2;
    superdom_settings.humanstartinds = 2;
    superdom_settings.startcash = 0;
    superdom_settings.startfood = 0;
    superdom_settings.movesperturn = 2;
    superdom_settings.compdiff=2;
    superdom_settings.spoil_enabled=false;
    superdom_settings.persistent_units=false;
}

static int average_strength(int colour)
{
    /* This function calculates the average strength of the given player,
     * used to determine when the computer wins or loses. */
    int i,j;
    int totalpower = 0;
    for(i=1;i<=BOARD_SIZE;i++)
    {
        for(j=1;j<=BOARD_SIZE;j++)
        {
            if(board[i][j].colour != -1)
            {
                totalpower += calc_strength(colour, i, j);
            }
        }
    }
    return totalpower/NUM_SPACES;
}

enum plugin_status plugin_start(const void* parameter)
{
    rb->srand(*rb->current_tick);
#if LCD_DEPTH > 1
    rb->lcd_set_backdrop(NULL);
    rb->lcd_set_foreground(LCD_BLACK);
    rb->lcd_set_background(LCD_WHITE);
#endif

    cursor.x = 1;
    cursor.y = 1;
    default_settings();
    if(parameter)
    {
        if(load_game(parameter) != 0)
        {
            DEBUGF("Loading failed, generating new game\n");
        }
        else
        {
            switch(gamestate)
            {
            case GS_PROD:
                goto startprod;
                break;
            case GS_MOVE:
                goto startmove;
                break;
            case GS_WAR:
                goto startwar;
                break;
            default:
                goto startyear;
                break;
            }
        }
    }

    switch(start_menu())
    {
    case RET_VAL_OK: /* start playing */
        break;
    case RET_VAL_QUIT_ERR: /* quit */
        return PLUGIN_OK;
        break;
    case RET_VAL_USB:
        return PLUGIN_USB_CONNECTED;
        break;
    }

    init_resources();
    init_board();
    gen_resources();
startyear:
    while(1)
    {
        int avg_str_diff = (average_strength(COLOUR_LIGHT) -
                            average_strength(COLOUR_DARK));
        /* computer will hold out longer in hard mode */
        if(avg_str_diff > (superdom_settings.compdiff>=3     ?
                           COMPUTER_HARD_SURRENDER_THRESHOLD :
                           COMPUTER_SURRENDER_THRESHOLD))
        {
            rb->splash(HZ*4, "The computer has surrendered. You win.");
            return PLUGIN_OK;
        }
        if(-avg_str_diff > HUMAN_SURRENDER_THRESHOLD)
        {
            rb->splash(HZ*4, "Your army has suffered terrible morale from"
                       " the bleak prospects of winning. You lose.");
            return PLUGIN_OK;
        }

        /* production */
    startprod:
        gamestate = GS_PROD;
        switch(production_menu())
        {
        case RET_VAL_USB:
            return PLUGIN_USB_CONNECTED;
            break;
        case RET_VAL_QUIT_ERR:
            return PLUGIN_OK;
            break;
        }
        computer_allocate();

        /* movement */
        humanres.moves = superdom_settings.movesperturn;
    startmove:
        gamestate = GS_MOVE;
        switch(movement_menu())
        {
        case RET_VAL_USB:
            return PLUGIN_USB_CONNECTED;
            break;
        case RET_VAL_QUIT_ERR:
            return PLUGIN_OK;
            break;
        }
        /* computer movement */
        computer_movement();

        /* spoil food */
        if(superdom_settings.spoil_enabled)
        {
            spoil_food();
        }

        /* feed men */
        if(humanres.men)
        {
            if(humanres.food > humanres.men)
            {
                rb->snprintf(buf, sizeof(buf), "Your men ate %d units of food",
                             humanres.men);
                humanres.food -= humanres.men;
            }
            else
            {
                rb->snprintf(buf, sizeof(buf), "There was not enough food"
                             " to feed all your men, %d men have died of starvation",
                             killmen(COLOUR_LIGHT));
            }
            rb->splash(HZ*2, buf);
        }
        if(compres.men)
        {
            if(compres.food > compres.men)
            {
                compres.food -= compres.men;
            }
            else
            {
                rb->snprintf(buf, sizeof(buf), "The computer does not have"
                             " enough food to feed its men. %d have died of starvation",
                             killmen(COLOUR_DARK));
                rb->splash(HZ, buf);
            }
        }
        /* war */
        humanres.moves = superdom_settings.movesperturn;
    startwar:
        gamestate = GS_WAR;
        switch(war_menu())
        {
        case RET_VAL_USB:
            return PLUGIN_USB_CONNECTED;
            break;
        case RET_VAL_QUIT_ERR:
            return PLUGIN_OK;
            break;
        }
        compres.moves = superdom_settings.movesperturn;
        computer_war();
        gen_resources();
    }
    return PLUGIN_OK;
}