package com.sosnitzka.taiga.util;

import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityCreature;
import net.minecraft.entity.ai.EntityAIBase;
import net.minecraft.entity.ai.RandomPositionGenerator;
import net.minecraft.init.Blocks;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.Vec3d;
import net.minecraft.world.World;

public class EntityAIPermanentPanic extends EntityAIBase {
    private EntityCreature theEntityCreature;
    private double speed;
    private double randPosX;
    private double randPosY;
    private double randPosZ;

    public EntityAIPermanentPanic(EntityCreature creature, double speedIn) {
        this.theEntityCreature = creature;
        this.speed = speedIn;
    }

    /**
     * Returns whether the EntityAIBase should begin execution.
     */
    public boolean shouldExecute() {

        Vec3d vec3d = RandomPositionGenerator.findRandomTarget(this.theEntityCreature, 5, 4);

        if (vec3d == null) {
            return false;
        } else {
            this.randPosX = vec3d.xCoord;
            this.randPosY = vec3d.yCoord;
            this.randPosZ = vec3d.zCoord;

            if (this.theEntityCreature.isBurning()) {
                BlockPos blockpos = this.getRandPos(this.theEntityCreature.worldObj, this.theEntityCreature, 5, 4);

                if (blockpos != null) {
                    this.randPosX = (double) blockpos.getX();
                    this.randPosY = (double) blockpos.getY();
                    this.randPosZ = (double) blockpos.getZ();
                }
            }

            return true;
        }

    }

    /**
     * Execute a one shot task or start executing a continuous task
     */
    public void startExecuting() {
        this.theEntityCreature.getNavigator().tryMoveToXYZ(this.randPosX, this.randPosY, this.randPosZ, this.speed);
    }

    /**
     * Returns whether an in-progress EntityAIBase should continue executing
     */
    public boolean continueExecuting() {
        return !this.theEntityCreature.getNavigator().noPath();
    }

    private BlockPos getRandPos(World worldIn, Entity entityIn, int horizontalRange, int verticalRange) {
        BlockPos blockpos = new BlockPos(entityIn);
        BlockPos.MutableBlockPos blockpos$mutableblockpos = new BlockPos.MutableBlockPos();
        int i = blockpos.getX();
        int j = blockpos.getY();
        int k = blockpos.getZ();
        float f = (float) (horizontalRange * horizontalRange * verticalRange * 2);
        BlockPos blockpos1 = null;

        for (int l = i - horizontalRange; l <= i + horizontalRange; ++l) {
            for (int i1 = j - verticalRange; i1 <= j + verticalRange; ++i1) {
                for (int j1 = k - horizontalRange; j1 <= k + horizontalRange; ++j1) {
                    blockpos$mutableblockpos.setPos(l, i1, j1);
                    IBlockState iblockstate = worldIn.getBlockState(blockpos$mutableblockpos);
                    Block block = iblockstate.getBlock();

                    if (block == Blocks.WATER || block == Blocks.FLOWING_WATER) {
                        float f1 = (float) ((l - i) * (l - i) + (i1 - j) * (i1 - j) + (j1 - k) * (j1 - k));

                        if (f1 < f) {
                            f = f1;
                            blockpos1 = new BlockPos(blockpos$mutableblockpos);
                        }
                    }
                }
            }
        }

        return blockpos1;
    }
}