sprite_dump.java

private void dump_sprite_image(int sprite_id, String name, int count) {
	try {
		for (int i = 0; i < count; i++) {
			int id = sprite_id + i;
			Path path = Paths.get("sprite_dump", name + "-" + i + ".png");

			if (!Files.exists(path.getParent())) {
				Files.createDirectories(path.getParent());
			}
			
			BufferedImage image = new BufferedImage(screen.sprite_width[id] + screen.sprite_trans_x[id],
												screen.sprite_height[id] + screen.sprite_trans_y[id],
												BufferedImage.TYPE_INT_ARGB);
			
			for (int y = screen.sprite_trans_y[id]; y < image.getHeight(); y++) {
				for (int x = screen.sprite_trans_x[id]; x < image.getWidth(); x++) {
					int dx = x - screen.sprite_trans_x[id];
					int dy = y - screen.sprite_trans_y[id];
					
					int color = Surface.MAGENTA;
					
					if (screen.sprite_pixels[id] == null) {
						color = screen.sprite_palette[id][screen.sprite_raster[id][dx + (dy * screen.sprite_width[id])]];
					} else {
						color = screen.sprite_pixels[id][dx + (dy * screen.sprite_width[id])];
					}
					
					// convert color from RBG to ARGB color space
					if (color == Surface.MAGENTA) {
						color = 0x00000000;
					} else {
						color |= 0xFF000000;
					}

					image.setRGB(x, y, color);
				}
			}
			
			ImageIO.write(image, "png", path.toFile());
		}
	} catch (Exception e) {
		System.err.println("error processing " + name);
		e.printStackTrace();
	}
}