RenderingUtil

package io.github.hsyyid.starwarsbattlecraft.util;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.WorldRenderer;
import net.minecraft.client.renderer.block.model.BakedQuad;
import net.minecraft.client.renderer.texture.TextureMap;
import net.minecraft.client.renderer.vertex.VertexFormat;
import net.minecraft.crash.CrashReport;
import net.minecraft.util.ReportedException;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.model.Attributes;
import net.minecraftforge.client.model.IFlexibleBakedModel;
import net.minecraftforge.client.model.IModel;
import net.minecraftforge.client.model.ModelLoaderRegistry;
import org.lwjgl.opengl.GL11;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class RenderingUtil
{
    public static Map<String, IFlexibleBakedModel> loadedModels = new HashMap<>();

    public static void renderModel(IFlexibleBakedModel model)
    {
        Tessellator tessellator = Tessellator.getInstance();
        WorldRenderer worldrenderer = tessellator.getWorldRenderer();
        worldrenderer.begin(GL11.GL_QUADS, model.getFormat());
        for (BakedQuad q : model.getGeneralQuads())
        {
            int[] vd = q.getVertexData();
            worldrenderer.addVertexData(vd);
        }
        tessellator.draw();
    }

    public static IFlexibleBakedModel loadModel(String resourceName)
    {
        return loadModel(resourceName, Attributes.DEFAULT_BAKED_FORMAT);
    }

    public static IFlexibleBakedModel loadModel(String resourceName, VertexFormat fmt)
    {
        IFlexibleBakedModel model = loadedModels.get(resourceName);
        if (model != null)
            return model;

        try
        {
            TextureMap textures = Minecraft.getMinecraft().getTextureMapBlocks();
            IModel mod = ModelLoaderRegistry.getModel(new ResourceLocation(resourceName));
            model = mod.bake(mod.getDefaultState(), fmt, (location) -> textures.getAtlasSprite(location.toString()));
            loadedModels.put(resourceName, model);
            return model;
        }
        catch (IOException e)
        {
            throw new ReportedException(new CrashReport("Error loading custom model " + resourceName, e));
        }
    }
}