GraphicsManager::GraphicsManager()
{
_sprite_identifier = 0;
_object_char_bb = (uint16_t*)CharBaseBlock(4);
_background_char_bb = (uint16_t*)CharBaseBlock(BG_CHAR_BLOCK);
SetupGraphics();
}
/* the main function */
int main( ) {
int x = 0, y = 0;
/* we set the mode to mode 0 with background 0 turned on*/
*REG_DISPCNT = MODE_0 | BG0_ENABLE;
/* set up background 0 */
REG_BG0_PTR = BG_COLOR256 | TEXTBG_SIZE_256x256 |
(31 << SCREEN_SHIFT) | WRAPAROUND;
/* load the palette into background palette memory */
dma_memcpy((void*) test_palette, (void*) BG_PALETTE_MEMORY,
256, DMA_32_NOW);
/* load the tile image into tile memory */
dma_memcpy((void*) test_data, (void*) CharBaseBlock(0),
(test_width * test_height), DMA_16_NOW);
/* copy the tile map itself into memory */
unsigned short* bg0map =(unsigned short*)ScreenBaseBlock(31);
dma_memcpy((void*)testmap, (void*)bg0map, 1024, DMA_32_NOW);
/* we now loop forever displaying the image */
while (1) {
//D-pad moves background
if(!(BUTTONS & BUTTON_LEFT)) x--;
if(!(BUTTONS & BUTTON_RIGHT)) x++;
if(!(BUTTONS & BUTTON_UP)) y--;
if(!(BUTTONS & BUTTON_DOWN)) y++;
//
//wait for vertical refresh
WaitVBlank();
//use hardware background scrolling
REG_BG0VOFS = y ;
REG_BG0HOFS = x ;
int n;
for(n = 0; n < 4000; n++);
}
}
