assemblyline/src/main/java/assemblyline/client/render/RenderArmbot.java

package assemblyline.client.render;

import assemblyline.client.model.ModelArmbot;
import assemblyline.common.machine.armbot.TileEntityArmbot;
import net.minecraft.client.Minecraft;
import net.minecraft.client.entity.EntityClientPlayerMP;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.client.renderer.texture.TextureManager;
import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;
import universalelectricity.core.vector.Vector3;

public class RenderArmbot extends TileEntitySpecialRenderer {
    public static final ModelArmbot MODEL = new ModelArmbot();
    public static final String TEXTURE = "armbot.png";

    @Override
    public void
    renderTileEntityAt(TileEntity tileEntity, double x, double y, double z, float f) {
        if (tileEntity instanceof TileEntityArmbot) {
            EntityClientPlayerMP player;
            MovingObjectPosition objectPosition;
            String cmdText = ((TileEntityArmbot) tileEntity).getCommandDisplayText();
            if (!(cmdText == null || cmdText.isEmpty()
                  || (objectPosition
                      = (player = Minecraft.getMinecraft().thePlayer).rayTrace(8.0, 1.0f))
                      == null
                  || objectPosition.blockX != tileEntity.xCoord
                  || objectPosition.blockY != tileEntity.yCoord
                      && objectPosition.blockY != tileEntity.yCoord + 1
                  || objectPosition.blockZ != tileEntity.zCoord)) {
                RenderHelper.renderFloatingText(
                    cmdText,
                    (float) x + 0.5f,
                    (float) y + 0.25f,
                    (float) z + 0.5f,
                    0xFFFFFF
                );
            }
            this.bindTexture(
                new ResourceLocation("assemblyline", "textures/models/armbot.png")
            );
            GL11.glPushMatrix();
            GL11.glTranslatef(
                (float) ((float) x + 0.5f),
                (float) ((float) y + 1.5f),
                (float) ((float) z + 0.5f)
            );
            GL11.glScalef((float) 1.0f, (float) -1.0f, (float) -1.0f);
            MODEL.render(
                0.0625f,
                ((TileEntityArmbot) tileEntity).renderYaw,
                ((TileEntityArmbot) tileEntity).renderPitch
            );
            GL11.glPopMatrix();
            Vector3 handPosition = ((TileEntityArmbot) tileEntity).getDeltaHandPosition();
            handPosition.add(0.5);
            handPosition.add(new Vector3(x, y, z));
            RenderItem renderItem = (RenderItem
            ) RenderManager.instance.getEntityClassRenderObject(EntityItem.class);
            TextureManager renderEngine = Minecraft.getMinecraft().renderEngine;
            for (ItemStack itemStack :
                 ((TileEntityArmbot) tileEntity).getGrabbedItems()) {
                if (itemStack == null)
                    continue;
                if (((TileEntityArmbot) tileEntity).renderEntityItem == null) {
                    ((TileEntityArmbot) tileEntity).renderEntityItem = new EntityItem(
                        tileEntity.getWorldObj(), 0.0, 0.0, 0.0, itemStack
                    );
                } else if (!itemStack.isItemEqual(((TileEntityArmbot) tileEntity)
                                                      .renderEntityItem.getEntityItem()
                           )) {
                    ((TileEntityArmbot) tileEntity).renderEntityItem = new EntityItem(
                        tileEntity.getWorldObj(), 0.0, 0.0, 0.0, itemStack
                    );
                }
                renderItem.doRender(
                    ((TileEntityArmbot) tileEntity).renderEntityItem,
                    handPosition.x,
                    handPosition.y,
                    handPosition.z,
                    0.0f,
                    f
                );
                break;
            }
        }
    }
}