diff options
Diffstat (limited to 'Snow.c')
| -rw-r--r-- | Snow.c | 181 |
1 files changed, 181 insertions, 0 deletions
@@ -0,0 +1,181 @@ +char *Disp_GetVRAMPtr(void); +int Timer_Install(int TimerID, void (*handler)(void), int delay); +int Timer_Start(int TimerID); +void App_RUNMAT(); +int RTC_GetTicks(); +void AllClear_VRAM(); + +typedef struct{ + unsigned int x1; + unsigned int y1; + unsigned int x2; + unsigned int y2; + unsigned char f[4]; + unsigned int on_bits; + unsigned int off_bits; +} TShape; + +void ShapeToVRAM( TShape* x ); + +char *vram; + +const int SysCallWrapper[] = {0xD201422B,0x60F20000,0x80010070}; +const int (*iSysCallFuncPtr)( int R4, int R5, int R6, int R7, int FNo ) = (void*)&SysCallWrapper; +#define Alpha_GetData(VarName,Dest) (void)(*iSysCallFuncPtr)( VarName,(int)Dest, 0, 0, 0x04DF) +#define Alpha_ClearAll() (void)(*iSysCallFuncPtr)( 0,0, 0, 0, 0x004E1) + +int InputString( unsigned char*buff, unsigned char *heading, int maxlen ); + +static unsigned int lastrandom=0x12345678; + +unsigned int random( int seed){ + if (seed) lastrandom=seed; + lastrandom = ( 0x41C64E6D*lastrandom ) + 0x3039; + return ( lastrandom >> 16 ); +} + +const char sprite[][] = { +{ 0 , 1 , 0 }, +{ 1 , 1 , 1 }, +{ 1 , 0 , 1 }, +{ 1 , 1 , 1 }, +{ 1 , 1 , 1 }, +{ 1 , 1 , 1 }, +{ 0 , 0 , 1 }, +{ 0 , 0 , 1 }, +{ 0 , 0 , 1 } +} + +void setpixel(unsigned char x, char y) +{ + TShape t; + if(x&~127 || y&~63) return; + t.x1 = x; + t.y1 = y; + t.f[0] = 2; + t.f[1] = 1; + t.f[2] = 1; + t.f[3] = 1; + + ShapeToDD(&t); +} + +void drawsprite(unsigned char px, char py) +{ + char x, y; + for(y = 0; y < 9; y++) + for(x = 0; x < 3; x++) + if(sprite[x][y] == 1) + setpixel(px + x, py + y); +} + +#define CNT 10 + +struct {unsigned char active, x;char y;float dirx;} fire[CNT]; + +void display_vram() +{ + char *LCD_register_selector = (char*)0xB4000000, *LCD_data_register = (char*)0xB4010000, *mvram; + int i, j; + mvram = vram; + for(i=0 ; i<64 ; i++) + { + *LCD_register_selector = 4; + *LCD_data_register = i|192; + *LCD_register_selector = 4; + *LCD_data_register = 0; + *LCD_register_selector = 7; + for(j=0 ; j<16 ; j++) *LCD_data_register = *mvram++; + } +} + +char isMainMenu() +{ + unsigned int ea; + unsigned int j; + ea = *(unsigned int*)0x8001007C; + ea += 0x0490*4; + ea = *(unsigned int*)( ea ); + j = *(unsigned char*)( ea + 1 ); + j *= 4; + j = ( ea + j + 4 ) & 0xFFFFFFFC; + j = *(unsigned int*)( j ) + 1; + + return *(unsigned char*)j; +} + +char variable[24]={0}; + +void snowtimer(void) +{ + unsigned char x; + + if(!isMainMenu()) + { + display_vram(); + + for(x =CNT - 1; x > 0 ; x--) + { + if(fire[x].active == 1) + { + drawsprite(fire[x].x, fire[x].y); + fire[x].y --; + fire[x].x += dirx; + if(fire[x].y == 0 || fire[x].x > 127 || fire[x].x < 0) + fire[x].active = 0; + } + else + { + if((rand() * RTC_GetTicks()) % 32 == 0) + { + fire[x].active = 1; + fire[x].x = random(0) % 128; + fire[x].dirx = (random(0) % 30) / 10; + fire[x].y = 64; + } + } + } + } + + Alpha_GetData('A',variable); + if(variable[0]) + { + KillTimer(1); + } +} + +int AddIn_main(int isAppli, unsigned short OptionNum) +{ + unsigned int key; + unsigned char text[3] = {0xE6, 0x91, 0}; + random(RTC_GetTicks()); + vram = Disp_GetVRAMPtr(); + Alpha_ClearAll(); + AllClr_VRAM(); + locate(3,3); + Print(&"~*| Firework |*~"); + locate(4,1); + Print(&"(C) by Casimo"); + locate(4,5); + Print(&"press any key"); + locate(6,6); + Print(&"to start"); + locate(4,8); + Print(&"exit with 1 A"); + locate(15,8); + Print(&text); + display_vram(); + GetKey(&key); + Timer_Install(6, &snowtimer, 300); + Timer_Start(6); + App_RUN_MAT(); +} + +#pragma section _BR_Size +unsigned long BR_Size; +#pragma section +#pragma section _TOP +int InitializeSystem(int isAppli, unsigned short OptionNum) +{return INIT_ADDIN_APPLICATION(isAppli, OptionNum);} +#pragma section + |