package me.gong.bar;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

import net.minecraft.server.v1_7_R4.Entity;
import net.minecraft.server.v1_7_R4.EntityWither;
import net.minecraft.server.v1_7_R4.MathHelper;

import org.bukkit.World;
import org.bukkit.craftbukkit.v1_7_R4.CraftWorld;

public class CustomWither extends EntityWither {
	public CustomWither(World w) {
		super(((CraftWorld)w).getHandle());
	}

	@Override
	public void e() {
		this.motY *= 0.6000000238418579D;
		if ((!this.world.isStatic) && (t(0) > 0)) {
			Entity entity = this.world.getEntity(t(0));
			if (entity != null) {
				if ((this.locY < entity.locY) || ((!cb()) && (this.locY < entity.locY + 5.0D))) {
					if (this.motY < 0.0D) {
						this.motY = 0.0D;
					}
					this.motY += (0.5D - this.motY) * 0.6000000238418579D;
				}
				double d3 = entity.locX - this.locX;

				double d0 = entity.locZ - this.locZ;
				double d1 = d3 * d3 + d0 * d0;
				if (d1 > 9.0D) {
					double d2 = MathHelper.sqrt(d1);
					this.motX += (d3 / d2 * 0.5D - this.motX) * 0.6000000238418579D;
					this.motZ += (d0 / d2 * 0.5D - this.motZ) * 0.6000000238418579D;
				}
			}
		}
		if (this.motX * this.motX + this.motZ * this.motZ > 0.0500000007450581D)
			this.yaw = ((float)Math.atan2(this.motZ, this.motX) * 57.295776F - 90.0F);
		super.e();
		for (int i = 0; i < 2; i++) {
			//this.bs[i] = this.bq[i]; original
			setFloatArray("bs", i, getFromFloatArray("bq", i));
			//this.br[i] = this.bp[i]; original
			setFloatArray("br", i, getFromFloatArray("bp", i));
		}
		for (int i = 0; i < 2; i++) {
			int j = t(i + 1);
			Entity entity1 = null;
			if (j > 0)
				entity1 = this.world.getEntity(j);
			if (entity1 != null) {
				double d0 = new MethodGetter<Double>("u", (i+1)).get();
				double d1 = new MethodGetter<Double>("v", (i+1)).get();
				double d2 = new MethodGetter<Double>("w", (i+1)).get();
				double d4 = entity1.locX - d0;
				double d5 = entity1.locY + entity1.getHeadHeight() - d1;
				double d6 = entity1.locZ - d2;
				double d7 = MathHelper.sqrt(d4 * d4 + d6 * d6);
				float f = (float)(Math.atan2(d6, d4) * 180.0D / 3.141592741012573D) - 90.0F;
				float f1 = (float)-(Math.atan2(d5, d7) * 180.0D / 3.141592741012573D);

				//this.bp[i] = b(this.bp[i], f1, 40.0F); original
				setFloatArray("bp", i, new MethodGetter<Float>("b", getFromFloatArray("bp", i), f1, 40.0F).get());
				//this.bq[i] = b(this.bq[i], f, 10.0F); original
				setFloatArray("bq", i, new MethodGetter<Float>("b", getFromFloatArray("bq", i), f, 10.0F).get());
			} else {
				//this.bq[i] = b(this.bq[i], this.aM, 10.0F); original
				setFloatArray("bq", i, new MethodGetter<Float>("b", getFromFloatArray("bq", i), this.aM, 10.0F).get());
			}
		}
	}

	public class MethodGetter<Return> {
		private Object ret = null;
		public MethodGetter(String methodName, Object... params) {
			try{
				Class<?> me = CustomWither.class;
				List<Class<?>> paramTypes2 = new ArrayList<Class<?>>();
				for(Object b:params) paramTypes2.add(b.getClass());
				Class<?>[] paramTypes = paramTypes2.toArray(new Class<?>[paramTypes2.size()]);
				Method meth = me.getDeclaredMethod(methodName, paramTypes);
				meth.setAccessible(true);
				ret = meth.invoke(this, params);
			}catch(Exception ex){}
		}

		@SuppressWarnings("unchecked")
		public Return get() {
			return (Return)ret;
		}
	}

	private void setFloatArray(String floatName, int index, float to) {
		try{
			Class<?> me = CustomWither.class;
			Field b = me.getDeclaredField(floatName);
			b.setAccessible(true);
			float[] get = (float[]) b.get(this);
			get[index] = to;
			b.set(this, get);
		}catch(Exception ex){}
	}

	private float getFromFloatArray(String floatName, int index) {
		try{
			Class<?> me = CustomWither.class;
			Field b = me.getDeclaredField(floatName);
			b.setAccessible(true);
			float[] ret = (float[])b.get(this);
			return ret[index];
		}catch(Exception ex){}
		return 0.0F;
	}
}