resent-1.8/src/main/java/net/minecraft/entity/EntityCreature.java

package net.minecraft.entity;

import net.lax1dude.eaglercraft.v1_8.EaglercraftUUID;

import net.minecraft.entity.ai.attributes.AttributeModifier;
import net.minecraft.entity.passive.EntityTameable;
import net.minecraft.util.BlockPos;
import net.minecraft.world.World;

public abstract class EntityCreature extends EntityLiving {
	public static final EaglercraftUUID FLEEING_SPEED_MODIFIER_UUID = EaglercraftUUID
			.fromString("E199AD21-BA8A-4C53-8D13-6182D5C69D3A");
	public static final AttributeModifier FLEEING_SPEED_MODIFIER = (new AttributeModifier(FLEEING_SPEED_MODIFIER_UUID,
			"Fleeing speed bonus", 2.0D, 2)).setSaved(false);
	private BlockPos homePosition = BlockPos.ORIGIN;
	/**+
	 * If -1 there is no maximum distance
	 */
	private float maximumHomeDistance = -1.0F;
	private boolean isMovementAITaskSet;

	public EntityCreature(World worldIn) {
		super(worldIn);
	}

	public float getBlockPathWeight(BlockPos pos) {
		return 0.0F;
	}

	/**+
	 * Checks if the entity's current position is a valid location
	 * to spawn this entity.
	 */
	public boolean getCanSpawnHere() {
		return super.getCanSpawnHere() && this
				.getBlockPathWeight(new BlockPos(this.posX, this.getEntityBoundingBox().minY, this.posZ)) >= 0.0F;
	}

	/**+
	 * if the entity got a PathEntity it returns true, else false
	 */
	public boolean hasPath() {
		return false;
	}

	public boolean isWithinHomeDistanceCurrentPosition() {
		return this.isWithinHomeDistanceFromPosition(new BlockPos(this));
	}

	public boolean isWithinHomeDistanceFromPosition(BlockPos pos) {
		return this.maximumHomeDistance == -1.0F ? true
				: this.homePosition.distanceSq(pos) < (double) (this.maximumHomeDistance * this.maximumHomeDistance);
	}

	/**+
	 * Sets home position and max distance for it
	 */
	public void setHomePosAndDistance(BlockPos pos, int distance) {
		this.homePosition = pos;
		this.maximumHomeDistance = (float) distance;
	}

	public BlockPos getHomePosition() {
		return this.homePosition;
	}

	public float getMaximumHomeDistance() {
		return this.maximumHomeDistance;
	}

	public void detachHome() {
		this.maximumHomeDistance = -1.0F;
	}

	/**+
	 * Returns whether a home area is defined for this entity.
	 */
	public boolean hasHome() {
		return this.maximumHomeDistance != -1.0F;
	}

	/**+
	 * Applies logic related to leashes, for example dragging the
	 * entity or breaking the leash.
	 */
	protected void updateLeashedState() {
		super.updateLeashedState();
		if (this.getLeashed() && this.getLeashedToEntity() != null
				&& this.getLeashedToEntity().worldObj == this.worldObj) {
			Entity entity = this.getLeashedToEntity();
			this.setHomePosAndDistance(new BlockPos((int) entity.posX, (int) entity.posY, (int) entity.posZ), 5);
			float f = this.getDistanceToEntity(entity);
			if (this instanceof EntityTameable && ((EntityTameable) this).isSitting()) {
				if (f > 10.0F) {
					this.clearLeashed(true, true);
				}

				return;
			}

			if (!this.isMovementAITaskSet) {
				this.isMovementAITaskSet = true;
			}

			this.func_142017_o(f);
			if (f > 6.0F) {
				double d0 = (entity.posX - this.posX) / (double) f;
				double d1 = (entity.posY - this.posY) / (double) f;
				double d2 = (entity.posZ - this.posZ) / (double) f;
				this.motionX += d0 * Math.abs(d0) * 0.4D;
				this.motionY += d1 * Math.abs(d1) * 0.4D;
				this.motionZ += d2 * Math.abs(d2) * 0.4D;
			}

			if (f > 10.0F) {
				this.clearLeashed(true, true);
			}
		} else if (!this.getLeashed() && this.isMovementAITaskSet) {
			this.isMovementAITaskSet = false;
			this.detachHome();
		}

	}

	protected void func_142017_o(float parFloat1) {
	}
}