Browse code

Fixed issue with drawing functions

neauoire authored on 31/07/2021 17:47:51
Showing 1 changed files
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@@ -41,9 +41,8 @@ putcolors(Ppu *p, Uint8 *addr)
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 void
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 putpixel(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)
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 {
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-	if(x >= p->width || y >= p->height)
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-		return;
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-	layer->pixels[y * p->width + x] = layer->colors[color];
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+	if(x < p->width && y < p->height)
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+		layer->pixels[y * p->width + x] = layer->colors[color];
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 }
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 void
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@@ -52,15 +51,13 @@ puticn(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uin
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 	Uint16 v, h;
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 	for(v = 0; v < 8; v++)
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 		for(h = 0; h < 8; h++) {
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-			Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1);
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-			Uint16 px = x + (flipx ? 7 - h : h);
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-			Uint16 py = y + (flipy ? 7 - v : v);
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-			if(!(ch1 || color % 0x5))
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-				continue;
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-			if(px < p->width && py < p->height) {
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-				Uint8 pc = ch1 ? (color & 0x3) : (color >> 0x2);
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-				layer->pixels[py * p->width + px] = layer->colors[pc];
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-			}
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+			Uint8 ch1 = (sprite[v] >> (7 - h)) & 0x1;
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+			if(ch1 == 1 || (color != 0x05 && color != 0x0a && color != 0x0f))
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+				putpixel(p,
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+					layer,
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+					x + (flipx ? 7 - h : h),
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+					y + (flipy ? 7 - v : v),
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+					ch1 ? color % 4 : color / 4);
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 		}
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 }
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@@ -72,12 +69,11 @@ putchr(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uin
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 		for(h = 0; h < 8; h++) {
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 			Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1) * color;
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 			Uint8 ch2 = ((sprite[v + 8] >> (7 - h)) & 0x1) * color;
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-			Uint16 px = x + (flipx ? 7 - h : h);
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-			Uint16 py = y + (flipy ? 7 - v : v);
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-			if(px < p->width && py < p->height) {
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-				Uint8 pc = ((ch1 + ch2 * 2) + color / 4) & 0x3;
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-				layer->pixels[py * p->width + px] = layer->colors[pc];
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-			}
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+			putpixel(p,
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+				layer,
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+				x + (flipx ? 7 - h : h),
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+				y + (flipy ? 7 - v : v),
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+				((ch1 + ch2 * 2) + color / 4) & 0x3);
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 		}
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 }
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@@ -97,3 +93,12 @@ initppu(Ppu *p, Uint8 hor, Uint8 ver)
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 	clear(p);
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 	return 1;
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 }
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+;
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+	p->height = 8 * p->ver;
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+	if(!(p->bg.pixels = malloc(p->width * p->height * sizeof(Uint32))))
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+		return 0;
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+	if(!(p->fg.pixels = malloc(p->width * p->height * sizeof(Uint32))))
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+		return 0;
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+	clear(p);
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+	return 1;
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+}