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rockbox/apps/plugins/jackpot.c
Andrew Mahone 23d9812273 loader-initialized global plugin API: 
struct plugin_api *rb is declared in PLUGIN_HEADER, and pointed to by
__header.api

the loader uses this pointer to initialize rb before calling entry_point

entry_point is no longer passed a pointer to the plugin API

all plugins, and pluginlib functions, are modified to refer to the
global rb

pluginlib functions which only served to copy the API pointer are
removed

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19776 a1c6a512-1295-4272-9138-f99709370657
2009-01-16 10:34:40 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 Copyright Kévin Ferrare based on work by Pierre Delore
*
* 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.
*
****************************************************************************/
#include "plugin.h"
#include "lib/pluginlib_actions.h"
#include "lib/picture.h"
PLUGIN_HEADER
const struct button_mapping* plugin_contexts[]={generic_actions};
#define NB_PICTURES 9
#define NB_SLOTS 3
#ifdef HAVE_LCD_CHARCELLS
#define PICTURE_ROTATION_STEPS 7
static unsigned char jackpot_slots_patterns[]={
0x00, 0x0A, 0x1F, 0x1F, 0x1F, 0x0e, 0x04, /* (+00)Heart */
0x00, 0x04, 0x0E, 0x1F, 0x1F, 0x04, 0x0E, /* (+07)Spade */
0x00, 0x04, 0x0E, 0x1F, 0x0E, 0x04, 0x00, /* (+14)Diamond */
0x00, 0x15, 0x0E, 0x1F, 0x0E, 0x15, 0x00, /* (+21)Club */
0x03, 0x04, 0x0e, 0x1F, 0x1F, 0x1F, 0x0e, /* (+28)Cherry */
0x00, 0x04, 0x04, 0x1F, 0x04, 0x0E, 0x1F, /* (+35)Cross */
0x04, 0x0E, 0x15, 0x04, 0x0A, 0x0A, 0x11, /* (+42)Man */
0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00, /* (+49)Square */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* (+56)Empty */
0x00, 0x0A, 0x1F, 0x1F, 0x1F, 0x0e, 0x04 /* (+63)Heart */
};
static unsigned long char_patterns[NB_SLOTS];
#define SLEEP_TIME (HZ/24)
#else /* bitmaps LCDs */
#define PICTURE_HEIGHT (BMPHEIGHT_jackpot_slots/(NB_PICTURES+1))
#if NB_SCREENS==1
#define PICTURE_ROTATION_STEPS PICTURE_HEIGHT
#else
#define REMOTE_PICTURE_HEIGHT (BMPHEIGHT_jackpot_slots_remote/(NB_PICTURES+1))
#define PICTURE_ROTATION_STEPS REMOTE_PICTURE_HEIGHT
#endif
/* FIXME: would be nice to have better graphics ... */
#include "pluginbitmaps/jackpot_slots.h"
#if NB_SCREENS==2
#include "pluginbitmaps/jackpot_slots_remote.h"
#endif
const struct picture jackpot_pictures[]={
{jackpot_slots, BMPWIDTH_jackpot_slots,PICTURE_HEIGHT},
#if NB_SCREENS==2
{jackpot_slots_remote,BMPWIDTH_jackpot_slots_remote,REMOTE_PICTURE_HEIGHT}
#endif
};
#define SLEEP_TIME (HZ/200)
#endif /* HAVE_LCD_CHARCELLS */
struct jackpot
{
/* A slot can display "NB_PICTURES" pictures
A picture is moving up, it can take PICTURE_ROTATION_STEPS
to move a single picture completely.
So values in slot_state are comprised between
0 and NB_PICTURES*PICTURE_ROTATION_STEPS
*/
int slot_state[NB_SLOTS];
/*
The real state of the picture in pixels on each screen
Different from slot_state because of the synchronised
rotation between different sized bitmaps on remote and main screen
*/
int state_y[NB_SCREENS][NB_SLOTS];
int money;
};
#ifdef HAVE_LCD_CHARCELLS
void patterns_init(struct screen* display)
{
int i;
for(i=0;i<NB_SLOTS;i++)
char_patterns[i]=display->get_locked_pattern();
}
void patterns_deinit(struct screen* display)
{
/* Restore the old pattern */
int i;
for(i=0;i<NB_SLOTS;i++)
display->unlock_pattern(char_patterns[i]);
}
#endif /* HAVE_LCD_CHARCELLS */
/*Call when the program exit*/
void jackpot_exit(void *parameter)
{
(void)parameter;
#ifdef HAVE_LCD_CHARCELLS
patterns_deinit(rb->screens[SCREEN_MAIN]);
#endif /* HAVE_LCD_CHARCELLS */
}
void jackpot_init(struct jackpot* game)
{
int i,j;
game->money=20;
for(i=0;i<NB_SLOTS;i++){
game->slot_state[i]=(rb->rand()%NB_PICTURES)*PICTURE_ROTATION_STEPS;
FOR_NB_SCREENS(j)
game->state_y[j][i]=-1;
}
}
int jackpot_get_result(struct jackpot* game)
{
int i=NB_SLOTS-1;
int multiple=1;
int result=0;
for(;i>=0;i--)
{
result+=game->slot_state[i]*multiple/PICTURE_ROTATION_STEPS;
multiple*=10;
}
return(result);
}
int jackpot_get_gain(struct jackpot* game)
{
switch (jackpot_get_result(game))
{
case 111 : return(20);
case 000 : return(15);
case 333 : return(10);
case 222 : return(8);
case 555 : return(5);
case 777 : return(4);
case 251 : return(4);
case 510 : return(4);
case 686 : return(3);
case 585 : return(3);
case 282 : return(3);
case 484 : return(3);
case 787 : return(2);
case 383 : return(2);
case 80 : return(2);
}
return(0);
}
void jackpot_display_slot_machine(struct jackpot* game, struct screen* display)
{
char str[20];
int i;
bool changes=false;
#ifdef HAVE_LCD_CHARCELLS
display->putc(0, 0, '[');
#else
const struct picture* picture= &(jackpot_pictures[display->screen_type]);
int pos_x=(display->getwidth()-NB_SLOTS*(picture->width+1))/2;
int pos_y=(display->getheight()-(picture->height))/2;
#endif /* HAVE_LCD_CHARCELLS */
for(i=0;i<NB_SLOTS;i++)
{
#ifdef HAVE_LCD_CHARCELLS
/* the only charcell lcd is 7 pixel high */
int state_y=(game->slot_state[i]*7)/PICTURE_ROTATION_STEPS;
#else
int state_y=
(picture->height*game->slot_state[i])/PICTURE_ROTATION_STEPS;
#endif /* HAVE_LCD_CHARCELLS */
int previous_state_y=game->state_y[display->screen_type][i];
if(state_y==previous_state_y)
continue;/*no need to update the picture
as it's the same as previous displayed one*/
changes=true;
game->state_y[display->screen_type][i]=state_y;
#ifdef HAVE_LCD_CHARCELLS
char* current_pattern=&(jackpot_slots_patterns[state_y]);
display->define_pattern(char_patterns[i],
current_pattern);
display->putc(i+1, 0, char_patterns[i]);
#else
vertical_picture_draw_part(display, picture, state_y, pos_x, pos_y);
pos_x+=(picture->width+1);
#endif
}
if(changes){
#ifdef HAVE_LCD_CHARCELLS
rb->snprintf(str,sizeof(str),"$%d", game->money);
display->putc(++i, 0, ']');
display->puts(++i, 0, str);
#else
rb->snprintf(str,sizeof(str),"money : $%d", game->money);
display->puts(0, 0, str);
#endif
display->update();
}
}
void jackpot_info_message(struct screen* display, char* message)
{
#ifdef HAVE_LCD_CHARCELLS
display->puts_scroll(0,1,message);
#else
int xpos, ypos;
int message_height, message_width;
display->getstringsize(message, &message_width, &message_height);
xpos=(display->getwidth()-message_width)/2;
ypos=display->getheight()-message_height;
rb->screen_clear_area(display, 0, ypos, display->getwidth(),
message_height);
display->putsxy(xpos,ypos,message);
display->update();
#endif /* HAVE_LCD_CHARCELLS */
}
void jackpot_print_turn_result(struct jackpot* game,
int gain, struct screen* display)
{
char str[20];
if (gain==0)
{
jackpot_info_message(display, "None ...");
if (game->money<=0)
jackpot_info_message(display, "You lose...STOP to quit");
}
else
{
rb->snprintf(str,sizeof(str),"You win %d$",gain);
jackpot_info_message(display, str);
}
display->update();
}
void jackpot_play_turn(struct jackpot* game)
{
/* How many pattern? */
int nb_turns[NB_SLOTS];
int i,d,gain,turns_remaining=0;
if(game->money<=0)
return;
game->money--;
for(i=0;i<NB_SLOTS;i++)
{
nb_turns[i]=(rb->rand()%15+5)*PICTURE_ROTATION_STEPS;
turns_remaining+=nb_turns[i];
}
FOR_NB_SCREENS(d)
{
rb->screens[d]->clear_display();
jackpot_info_message(rb->screens[d],"Good luck");
}
/* Jackpot Animation */
while(turns_remaining>0)
{
for(i=0;i<NB_SLOTS;i++)
{
if(nb_turns[i]>0)
{
nb_turns[i]--;
game->slot_state[i]++;
if(game->slot_state[i]>=PICTURE_ROTATION_STEPS*NB_PICTURES)
game->slot_state[i]=0;
turns_remaining--;
}
}
FOR_NB_SCREENS(d)
jackpot_display_slot_machine(game, rb->screens[d]);
rb->sleep(SLEEP_TIME);
}
gain=jackpot_get_gain(game);
if(gain!=0)
game->money+=gain;
FOR_NB_SCREENS(d)
jackpot_print_turn_result(game, gain, rb->screens[d]);
}
enum plugin_status plugin_start(const void* parameter)
{
int action, i;
struct jackpot game;
(void)parameter;
rb->srand(*rb->current_tick);
#ifdef HAVE_LCD_CHARCELLS
patterns_init(rb->screens[SCREEN_MAIN]);
#endif /* HAVE_LCD_CHARCELLS */
jackpot_init(&game);
FOR_NB_SCREENS(i){
rb->screens[i]->clear_display();
jackpot_display_slot_machine(&game, rb->screens[i]);
}
/*Empty the event queue*/
rb->button_clear_queue();
while (true)
{
action = pluginlib_getaction(TIMEOUT_BLOCK,
plugin_contexts, 1);
switch ( action )
{
case PLA_QUIT:
return PLUGIN_OK;
case PLA_FIRE:
jackpot_play_turn(&game);
break;
default:
if (rb->default_event_handler_ex(action, jackpot_exit, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
break;
}
}
jackpot_exit(NULL);
return PLUGIN_OK;
}
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