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rockbox/apps/plugins/nim.c
Steve Bavin 6526577818 Plugin parameters should be const. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17492 a1c6a512-1295-4272-9138-f99709370657
2008-05-13 09:57:56 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2003 Pierre Delore
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#ifdef HAVE_LCD_CHARCELLS
/* NIM game for the player
Rules of nim game
-----------------
There are 21 matches.
Two players (you and the cpu) alternately pick a certain number of matches and the one,
who takes the last match, loses.
History:
-------
V1.0 : 2003-07-22
First release of the game
V1.1 : 2003-07-22
I Change the patterns definition in order to have a clean code
V1.2 : 2003-07-30
Patch from JB that change:
. the win and lose message
. the BUTTON_STOP code
. Add a test
I suppress the exit variable
I suppress or translates the comments which were in French
I put min=1 at the of the main loop ( When there are 21 matches you can decide not to
take a match. Later you are obliged to take at least one.)
*/
PLUGIN_HEADER
/*Pattern for the game*/
static unsigned char smile[]={0x00, 0x11, 0x04, 0x04, 0x00, 0x11, 0x0E}; /* :-) */
static unsigned char cry[] ={0x00, 0x11, 0x04, 0x04, 0x00, 0x0E, 0x11}; /* :-( */
static unsigned char pattern3[]={0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15}; /*3 parts*/
static unsigned char pattern2[]={0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14}; /*2 parts*/
static unsigned char pattern1[]={0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}; /*1 part*/
static unsigned char str[12]; /*String use to display the first line*/
static unsigned long hsmile,hcry,h1,h2; /*Handle for the new pattern*/
static bool end; /*If true game is finished*/
static const struct plugin_api* rb;
/*Display that the action it's impossible*/
static void impossible(void)
{
rb->lcd_puts(0,1,"Impossible!");
rb->lcd_update();
rb->sleep(HZ);
return;
}
/*Display that the CPU lose :) */
static void lose(void)
{
rb->lcd_define_pattern(hsmile,smile);
rb->lcd_puts(0,1,"You Win!!");
rb->lcd_putc(8,1,hsmile);
rb->lcd_update();
end=true;
rb->sleep(HZ*2);
return;
}
/* Display that the CPU win :( */
static void win(void)
{
rb->lcd_define_pattern(hcry,cry);
rb->lcd_puts(0,1,"You Lose!!");
rb->lcd_putc(9,1,hcry);
rb->lcd_update();
end=true;
rb->sleep(HZ*2);
return;
}
/*Display the first line*/
static void display_first_line(int x)
{
int i;
rb->snprintf(str,sizeof(str)," =%d",x);
rb->lcd_puts(0,0,str);
rb->lcd_define_pattern(h1,pattern3);
for (i=0;i<x/3;i++)
rb->lcd_putc(i,0,h1);
if (x%3==2)
{
rb->lcd_define_pattern(h2,pattern2);
rb->lcd_putc(i,0,h2);
}
if (x%3==1)
{
rb->lcd_define_pattern(h2,pattern1);
rb->lcd_putc(i,0,h2);
}
}
/* Call when the program end */
static void nim_exit(void *parameter)
{
(void)parameter;
/*Restore the old pattern*/
rb->lcd_unlock_pattern(h1);
rb->lcd_unlock_pattern(h2);
rb->lcd_unlock_pattern(hsmile);
rb->lcd_unlock_pattern(hcry);
/*Clear the screen*/
rb->lcd_clear_display();
rb->lcd_update();
}
/* this is the plugin entry point */
enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter)
{
int y,z,button;
int x,v,min;
bool ok;
bool go;
/* if you don't use the parameter, you can do like
this to avoid the compiler warning about it */
(void)parameter;
/* if you are using a global api pointer, don't forget to copy it!
otherwise you will get lovely "I04: IllInstr" errors... :-) */
rb = api;
/*Get the pattern handle*/
h1=rb->lcd_get_locked_pattern();
h2=rb->lcd_get_locked_pattern();
hcry=rb->lcd_get_locked_pattern();
hsmile=rb->lcd_get_locked_pattern();
rb->splash(HZ, "NIM V1.2");
rb->lcd_clear_display();
/* Main loop */
while (1)
{
/* Init */
x=21;
v=1;
y=1;
end=false;
min=0;
/*Empty the event queue*/
rb->button_clear_queue();
/* Game loop */
while(end!=true)
{
do
{
ok=1;
y=1;
display_first_line(x);
rb->snprintf(str,sizeof(str),"[%d..%d]?=%d",min,v,y);
rb->lcd_puts(0,1,str);
rb->lcd_update();
go=false;
while (!go)
{
button = rb->button_get(true);
switch ( button )
{
case BUTTON_STOP|BUTTON_REL:
go = true;
nim_exit(NULL);
return PLUGIN_OK;
break;
case BUTTON_PLAY|BUTTON_REL:
go=true;
break;
case BUTTON_LEFT|BUTTON_REL:
go=false;
if (y>min)
y--;
break;
case BUTTON_RIGHT|BUTTON_REL:
go=false;
if (y<v)
y++;
break;
default:
if (rb->default_event_handler_ex(button, nim_exit,
NULL) == SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
break;
}
display_first_line(x);
rb->snprintf(str,sizeof(str),"[%d..%d]?=%d",min,v,y);
rb->lcd_puts(0,1,str);
rb->lcd_update();
}
if ( (y==0) && (x<21))
{
impossible();
ok=false;
}
else
{
if (y!=0) /*If y=0 and x=21 jump to CPU code */
{
if ((y>v) || (y>x))
{
impossible();
ok=false;
}
if (y-x==0)
win();
else
{
v=y*2;
x-=y;
}
}
}
}
while (ok==false);
display_first_line(x);
/*CPU*/
if (x==1)
lose();
else
if (x==2)
win();
y=0;
if (end==false)
{
for (z=v;z>=1;z--)
{
if (x-z==1)
y=z;
}
if (y<=0)
{
for(z=v;z>=1;z--)
{
if(x-(z*3)==2)
y=z;
}
if ((y==0) && (x>14))
y=v;
if (y==0)
y=1;
}
v=y*2;
x-=y;
rb->snprintf(str,sizeof(str),"I take=%d",y);
rb->lcd_puts(0,1,str);
rb->lcd_update();
rb->sleep(HZ);
}
if ((x==1)&&(!end))
win();
min=1;
}
}
nim_exit(NULL);
return PLUGIN_OK;
}
#endif
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