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Автор темы
- #1
Что такое AssetLoader? AssetLoader он скачивает с прямой ссылки на ассет и преобразовывает его в нативный формат. Как дополнительная защита на ассеты пойдет
Java:
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.GL11;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import java.nio.ByteBuffer;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class AssetLoader {
private static final Map<String, Integer> textureCache = new ConcurrentHashMap<>();
public static int loadTexture(String urlString) {
return textureCache.computeIfAbsent(urlString, key -> {
BufferedImage image = downloadImage(urlString);
if (image != null) {
return convertToNativeTexture(image);
}
return -1;
});
}
private static BufferedImage downloadImage(String urlString) {
try {
URL url = new URL(urlString);
return ImageIO.read(url);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private static int convertToNativeTexture(BufferedImage image) {
int width = image.getWidth();
int height = image.getHeight();
int[] pixels = new int[width * height];
image.getRGB(0, 0, width, height, pixels, 0, width);
ByteBuffer buffer = BufferUtils.createByteBuffer(width * height * 4);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int pixel = pixels[y * width + x];
buffer.put((byte) ((pixel >> 16) & 0xFF));
buffer.put((byte) ((pixel >> 8) & 0xFF));
buffer.put((byte) (pixel & 0xFF));
buffer.put((byte) ((pixel >> 24) & 0xFF));
}
}
buffer.flip();
int textureId = GL11.glGenTextures();
GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width, height, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
return textureId;
}
}
