graphics/Effects/GradientColors/GradientColors.c

/*---------------------------------------------------------------------------------
 
 
    Simple gradient color effect in mode 1 
    -- alekmaul
 
 
---------------------------------------------------------------------------------*/
#include <snes.h>
 
extern char patterns, patterns_end;
extern char palette, palette_end;
extern char map, map_end;
 
extern const unsigned char hdmaGradientList[];
 
u8 pada,padb;
u16 pad0;
 
//---------------------------------------------------------------------------------
int main(void)
{
    // Copy tiles to VRAM
    bgInitTileSet(0, &patterns, &palette, 0, (&patterns_end - &patterns), (&palette_end - &palette), BG_16COLORS, 0x4000);
 
    // Copy Map to VRAM
    bgInitMapSet(0, &map, (&map_end - &map), SC_32x32, 0x0000);
 
    // Now Put in 16 color mode and disable other BGs except 1st one
    setMode(BG_MODE1, 0);
    bgSetDisable(1);
    bgSetDisable(2);
    setScreenOn();
 
    // Initialize the gradient color effect 
    setModeHdmaColor((u8 *) &hdmaGradientList);
    pada=0; padb=0;
    
    // Wait for nothing :P
    while (1)
    {
        // Get current #0 pad
        pad0 = padsCurrent(0);
 
        // remove it with key a
        if (pad0 & KEY_A) {
            if (!pada) {
                pada=1;
                setModeHdmaReset(0x00);
            }
        }
        else pada=0;
        
        // put it again with key b
        if (pad0 & KEY_B) {
            padb=1;
            setModeHdmaColor((u8 *) &hdmaGradientList);
        }
        else padb=0;
 
        // Wait vblank sync
        WaitForVBlank();
    }
    return 0;
}