EntityMirror.java

package com.mrcrayfish.furniture.entity;

import com.mrcrayfish.furniture.blocks.BlockMirror;
import com.mrcrayfish.furniture.render.tileentity.MirrorRenderer;

import net.minecraft.client.Minecraft;
import net.minecraft.entity.Entity;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.EnumFacing;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class EntityMirror extends Entity
{
	private Minecraft mc = Minecraft.getMinecraft();

	private int facing;
	public boolean rendering;

	public EntityMirror(World worldIn)
	{
		super(worldIn);
	}
	
	public EntityMirror(World worldIn, double x, double y, double z, EnumFacing facing)
	{
		super(worldIn);
		this.facing = facing.getHorizontalIndex();
		this.noClip = true;
		this.height = 0.001F;
		this.width = 0.001F;
		setPostionConsideringRotation(x, y, z, facing.getHorizontalIndex());
	}

	public void setPostionConsideringRotation(double x, double y, double z, int rotation)
	{
		double offset = -0.43;
		switch (rotation)
		{
		case 2:
			z += offset;
			break;
		case 0:
			z -= offset;
			break;
		case 3:
			x -= offset;
			break;
		case 1:
			x += offset;
			break;
		}
		setPosition(x + 0.5D, y + 0.5, z + 0.5D);
	}

	@Override
	protected void entityInit()
	{

	}

	@Override
	@SideOnly(Side.CLIENT)
	public void onUpdate()
	{
		super.onUpdate();

		if (rendering)
		{
			double dy = this.posZ - mc.player.posZ;
			double dx = this.posX - mc.player.posX;
			double angleYaw = Math.atan2(dy, dx) * (180D / Math.PI);
				
			if(facing == 1)
			{
				angleYaw -= 90D;
				if(angleYaw <= -180D)
				{
					angleYaw = 360D + angleYaw;
				}
				
			}
			if(facing > 1)
			{
				angleYaw += 360D - (facing * 90D);
			}

			if(angleYaw >= 135D)
				angleYaw = 135D;
			if(angleYaw <= 45D)
				angleYaw = 45D;
			
			this.rotationYaw = (float) (-90F + facing * 90F - angleYaw);


			double distance = getDistanceToEntity(mc.player);
			double height = (mc.player.getEyeHeight() + mc.player.posY) - this.posY;
			double anglePitch = Math.atan2(height, distance) * (180D / Math.PI);
			if (anglePitch > 45F)
			{
				anglePitch = 45F;
			}
			if (anglePitch < -45F)
			{
				anglePitch = -45F;
			}
			this.rotationPitch = (float) anglePitch;
		}
		
		if (!(world.getBlockState(getPosition().down()).getBlock() instanceof BlockMirror))
		{
			MirrorRenderer.removeRegisteredMirror(this);
			this.setDead();
		}
	}
	
	@Override
	@SideOnly(Side.CLIENT)
	public boolean shouldRenderInPass(int pass)
	{
		return true;
	}

	@Override
	protected void readEntityFromNBT(NBTTagCompound tagCompund)
	{

	}

	@Override
	protected void writeEntityToNBT(NBTTagCompound tagCompound)
	{

	}
}