import into gitHEADmaster

1 files changed, 181 insertions, 0 deletions

diff --git a/Snow.c b/Snow.c
new file mode 100644
index 0000000..ac449c8
--- /dev/null
+++ b/Snow.c
@@ -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
+