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- Començant a implementar el pintat de sprites

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This commit is contained in:
Raimon Zamora
2025-01-24 07:30:45 +01:00
parent 3e0de299b4
commit 771136e712
1 changed files with 29 additions and 2 deletions
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31
gbscreen.cpp
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@@ -132,7 +132,7 @@ namespace gbscreen
}
}
void fill_line_buffer(uint8_t LY)
void fill_line_buffer_bkg(uint8_t LY)
{
const uint8_t LCDC = mem::readMem(0xff40);
const uint8_t SCY = mem::readMem(0xff42);
@@ -167,6 +167,33 @@ namespace gbscreen
}
}
struct oam_entry_t
{
uint8_t y, tile, attr;
};
void fill_line_buffer_obj(uint8_t LY)
{
const uint8_t LCDC = mem::readMem(0xff40);
if ((LCDC & 0x2) == 0) return;
const uint8_t height = (LCDC & 0x4) ? 16 : 8;
uint8_t obj_list[10] = { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 };
int num_obj_found=0;
int obj=0;
while (obj<40 && num_obj_found<10)
{
const uint8_t y = mem::readMem(0xff00+(obj*4));
if ( (LY>=y) && (LY<y+height) ) {
obj_list[num_obj_found]=obj;
uint8_t i = num_obj_found;
while( (i>0) && (obj_list[i-1]) )
num_obj_found++;
}
obj++;
}
}
void refresh(const uint32_t dt, const bool full)
{
const uint8_t LCDC = mem::readMem(0xff40);
@@ -216,7 +243,7 @@ namespace gbscreen
{
STAT = (STAT & 0xFC) | 0x02; // Set mode 2
if (STAT&0x20) stat_interrupt = true;
fill_line_buffer(LY);
fill_line_buffer_bkg(LY);
}
else if (LY==154)
{