src/main/java/com/legacy/aether/client/renders/AetherEntityRenderer.java

package com.legacy.aether.client.renders;

import java.util.List;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.EntityRenderer;
import net.minecraft.client.resources.IResourceManager;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityItemFrame;
import net.minecraft.item.ItemStack;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.Vec3;

import com.legacy.aether.items.tools.ItemValkyrieTool;

import cpw.mods.fml.common.ObfuscationReflectionHelper;

public class AetherEntityRenderer extends EntityRenderer {

	private Entity pointedEntity;

	private final Minecraft mc;

	private final EntityRenderer previous;

	public AetherEntityRenderer(Minecraft mc, EntityRenderer previous, IResourceManager manager) {
		super(mc, manager);

		this.mc = mc;
		this.previous = previous;

		ObfuscationReflectionHelper.setPrivateValue(EntityRenderer.class, this, new AetherItemRenderer(mc), 7);
	}

	@Override
	public void getMouseOver(float p_78473_1_) {
		if (this.mc.renderViewEntity != null) {
			if (this.mc.theWorld != null) {
				ItemStack stack = this.mc.thePlayer.getCurrentEquippedItem();

				if (stack == null || !(stack.getItem() instanceof ItemValkyrieTool)) {
					this.previous.getMouseOver(p_78473_1_);
					return;
				}

				this.mc.pointedEntity = null;
				double d0 = 10.0D;
				this.mc.objectMouseOver = this.mc.renderViewEntity.rayTrace(d0, p_78473_1_);
				double d1 = d0;
				Vec3 vec3 = this.mc.renderViewEntity.getPosition(p_78473_1_);

				if (this.mc.playerController.extendedReach()) {
					d0 = 6.0D;
					d1 = 6.0D;
				} else {
					if (d0 > 3.0D) {
						d1 = 3.0D;
					}

					d0 = d1;
				}

				if (this.mc.objectMouseOver != null) {
					d1 = this.mc.objectMouseOver.hitVec.distanceTo(vec3);
				}

				Vec3 vec31 = this.mc.renderViewEntity.getLook(p_78473_1_);
				Vec3 vec32 = vec3.addVector(vec31.xCoord * d0, vec31.yCoord * d0, vec31.zCoord * d0);
				this.pointedEntity = null;
				Vec3 vec33 = null;
				float f1 = 1.0F;
				List<?> list = this.mc.theWorld.getEntitiesWithinAABBExcludingEntity(this.mc.renderViewEntity, this.mc.renderViewEntity.boundingBox.addCoord(vec31.xCoord * d0, vec31.yCoord * d0, vec31.zCoord * d0).expand((double) f1, (double) f1, (double) f1));
				double d2 = d1;

				for (int i = 0; i < list.size(); ++i) {
					Entity entity = (Entity) list.get(i);

					if (entity.canBeCollidedWith()) {
						float f2 = entity.getCollisionBorderSize();
						AxisAlignedBB axisalignedbb = entity.boundingBox.expand((double) f2, (double) f2, (double) f2);
						MovingObjectPosition movingobjectposition = axisalignedbb.calculateIntercept(vec3, vec32);

						if (axisalignedbb.isVecInside(vec3)) {
							if (0.0D < d2 || d2 == 0.0D) {
								this.pointedEntity = entity;
								vec33 = movingobjectposition == null ? vec3 : movingobjectposition.hitVec;
								d2 = 0.0D;
							}
						} else if (movingobjectposition != null) {
							double d3 = vec3.distanceTo(movingobjectposition.hitVec);

							if (d3 < d2 || d2 == 0.0D) {
								if (entity == this.mc.renderViewEntity.ridingEntity && !entity.canRiderInteract()) {
									if (d2 == 0.0D) {
										this.pointedEntity = entity;
										vec33 = movingobjectposition.hitVec;
									}
								} else {
									this.pointedEntity = entity;
									vec33 = movingobjectposition.hitVec;
									d2 = d3;
								}
							}
						}
					}
				}

				if (this.pointedEntity != null && (d2 < d1 || this.mc.objectMouseOver == null)) {
					this.mc.objectMouseOver = new MovingObjectPosition(this.pointedEntity, vec33);

					if (this.pointedEntity instanceof EntityLivingBase || this.pointedEntity instanceof EntityItemFrame) {
						this.mc.pointedEntity = this.pointedEntity;
					}
				}
			}
		}
	}

}