Working custom obj hat

src/main/java/org/saturnclient/cosmetics/hat/HatFeatureRenderer.java

@@ -4,15 +4,18 @@ import java.io.IOException;
 import java.util.Map;
 
 import org.saturnclient.cosmetics.obj.ObjRenderer;
+import org.saturnclient.saturnclient.client.player.SaturnPlayer;
 
 import de.javagl.obj.Mtl;
 import de.javagl.obj.Obj;
+import net.minecraft.client.render.OverlayTexture;
 import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.render.entity.feature.FeatureRenderer;
 import net.minecraft.client.render.entity.feature.FeatureRendererContext;
 import net.minecraft.client.render.entity.model.PlayerEntityModel;
 import net.minecraft.client.render.entity.state.PlayerEntityRenderState;
 import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.item.ItemStack;
 import net.minecraft.util.Identifier;
 
 public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState, PlayerEntityModel> {
@@ -34,6 +37,25 @@ public class HatFeatureRenderer extends FeatureRenderer<PlayerEntityRenderState,
     @Override
     public void render(MatrixStack matrices, VertexConsumerProvider vertexConsumers, int light,
             PlayerEntityRenderState state, float limbAngle, float limbDistance) {
-        ObjRenderer.renderObj(this.obj, this.mtl, matrices, vertexConsumers, light, 0);
+        ItemStack headItem = state.equippedHeadStack;
+        SaturnPlayer player = SaturnPlayer.get(state.name);
+
+        if (!headItem.isEmpty() || state.invisible || player == null || player.hat.isEmpty()) {
+            return;
+        }
+
+        matrices.push();
+
+        this.getContextModel().head.rotate(matrices);
+        matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_X.rotationDegrees(180.0f));
+        matrices.multiply(net.minecraft.util.math.RotationAxis.POSITIVE_Y.rotationDegrees(180.0f));
+
+        matrices.scale(0.25f, 0.25f, 0.25f);
+        matrices.translate(0.0f, 1.0f, 0.0f);
+
+        // Identifier.of("saturnclient:hat_" + player.hat);
+        ObjRenderer.renderObj(this.obj, this.mtl, matrices, vertexConsumers, light, OverlayTexture.DEFAULT_UV);
+
+        matrices.pop();
     }
 }