    001    package net.minecraft.entity.ai;
    002
    003    import net.minecraft.block.Block;
    004    import net.minecraft.entity.EntityCreature;
    005    import net.minecraft.entity.EntityLiving;
    006    import net.minecraft.entity.player.EntityPlayer;
    007    import net.minecraft.item.Item;
    008    import net.minecraft.item.ItemStack;
    009    import net.minecraft.pathfinding.PathFinder;
    010    import net.minecraft.pathfinding.PathPoint;
    011    import net.minecraft.util.MathHelper;
    012
    013    public class EntityAIControlledByPlayer extends EntityAIBase
    014    {
    015        private final EntityLiving thisEntity;
    016        private final float maxSpeed;
    017        private float currentSpeed = 0.0F;
    018
    019        /** Whether the entity's speed is boosted. */
    020        private boolean speedBoosted = false;
    021
    022        /**
    023         * Counter for speed boosting, upon reaching maxSpeedBoostTime the speed boost will be disabled
    024         */
    025        private int speedBoostTime = 0;
    026
    027        /** Maximum time the entity's speed should be boosted for. */
    028        private int maxSpeedBoostTime = 0;
    029
    030        public EntityAIControlledByPlayer(EntityLiving par1EntityLiving, float par2)
    031        {
    032            this.thisEntity = par1EntityLiving;
    033            this.maxSpeed = par2;
    034            this.setMutexBits(7);
    035        }
    036
    037        /**
    038         * Execute a one shot task or start executing a continuous task
    039         */
    040        public void startExecuting()
    041        {
    042            this.currentSpeed = 0.0F;
    043        }
    044
    045        /**
    046         * Resets the task
    047         */
    048        public void resetTask()
    049        {
    050            this.speedBoosted = false;
    051            this.currentSpeed = 0.0F;
    052        }
    053
    054        /**
    055         * Returns whether the EntityAIBase should begin execution.
    056         */
    057        public boolean shouldExecute()
    058        {
    059            return this.thisEntity.isEntityAlive() && this.thisEntity.riddenByEntity != null && this.thisEntity.riddenByEntity instanceof EntityPlayer && (this.speedBoosted || this.thisEntity.canBeSteered());
    060        }
    061
    062        /**
    063         * Updates the task
    064         */
    065        public void updateTask()
    066        {
    067            EntityPlayer var1 = (EntityPlayer)this.thisEntity.riddenByEntity;
    068            EntityCreature var2 = (EntityCreature)this.thisEntity;
    069            float var3 = MathHelper.wrapAngleTo180_float(var1.rotationYaw - this.thisEntity.rotationYaw) * 0.5F;
    070
    071            if (var3 > 5.0F)
    072            {
    073                var3 = 5.0F;
    074            }
    075
    076            if (var3 < -5.0F)
    077            {
    078                var3 = -5.0F;
    079            }
    080
    081            this.thisEntity.rotationYaw = MathHelper.wrapAngleTo180_float(this.thisEntity.rotationYaw + var3);
    082
    083            if (this.currentSpeed < this.maxSpeed)
    084            {
    085                this.currentSpeed += (this.maxSpeed - this.currentSpeed) * 0.01F;
    086            }
    087
    088            if (this.currentSpeed > this.maxSpeed)
    089            {
    090                this.currentSpeed = this.maxSpeed;
    091            }
    092
    093            int var4 = MathHelper.floor_double(this.thisEntity.posX);
    094            int var5 = MathHelper.floor_double(this.thisEntity.posY);
    095            int var6 = MathHelper.floor_double(this.thisEntity.posZ);
    096            float var7 = this.currentSpeed;
    097
    098            if (this.speedBoosted)
    099            {
    100                if (this.speedBoostTime++ > this.maxSpeedBoostTime)
    101                {
    102                    this.speedBoosted = false;
    103                }
    104
    105                var7 += var7 * 1.15F * MathHelper.sin((float)this.speedBoostTime / (float)this.maxSpeedBoostTime * (float)Math.PI);
    106            }
    107
    108            float var8 = 0.91F;
    109
    110            if (this.thisEntity.onGround)
    111            {
    112                var8 = 0.54600006F;
    113                int var9 = this.thisEntity.worldObj.getBlockId(MathHelper.floor_float((float)var4), MathHelper.floor_float((float)var5) - 1, MathHelper.floor_float((float)var6));
    114
    115                if (var9 > 0)
    116                {
    117                    var8 = Block.blocksList[var9].slipperiness * 0.91F;
    118                }
    119            }
    120
    121            float var21 = 0.16277136F / (var8 * var8 * var8);
    122            float var10 = MathHelper.sin(var2.rotationYaw * (float)Math.PI / 180.0F);
    123            float var11 = MathHelper.cos(var2.rotationYaw * (float)Math.PI / 180.0F);
    124            float var12 = var2.getAIMoveSpeed() * var21;
    125            float var13 = Math.max(var7, 1.0F);
    126            var13 = var12 / var13;
    127            float var14 = var7 * var13;
    128            float var15 = -(var14 * var10);
    129            float var16 = var14 * var11;
    130
    131            if (MathHelper.abs(var15) > MathHelper.abs(var16))
    132            {
    133                if (var15 < 0.0F)
    134                {
    135                    var15 -= this.thisEntity.width / 2.0F;
    136                }
    137
    138                if (var15 > 0.0F)
    139                {
    140                    var15 += this.thisEntity.width / 2.0F;
    141                }
    142
    143                var16 = 0.0F;
    144            }
    145            else
    146            {
    147                var15 = 0.0F;
    148
    149                if (var16 < 0.0F)
    150                {
    151                    var16 -= this.thisEntity.width / 2.0F;
    152                }
    153
    154                if (var16 > 0.0F)
    155                {
    156                    var16 += this.thisEntity.width / 2.0F;
    157                }
    158            }
    159
    160            int var17 = MathHelper.floor_double(this.thisEntity.posX + (double)var15);
    161            int var18 = MathHelper.floor_double(this.thisEntity.posZ + (double)var16);
    162            PathPoint var19 = new PathPoint(MathHelper.floor_float(this.thisEntity.width + 1.0F), MathHelper.floor_float(this.thisEntity.height + var1.height + 1.0F), MathHelper.floor_float(this.thisEntity.width + 1.0F));
    163
    164            if ((var4 != var17 || var6 != var18) && PathFinder.func_82565_a(this.thisEntity, var17, var5, var18, var19, false, false, true) == 0 && PathFinder.func_82565_a(this.thisEntity, var4, var5 + 1, var6, var19, false, false, true) == 1 && PathFinder.func_82565_a(this.thisEntity, var17, var5 + 1, var18, var19, false, false, true) == 1)
    165            {
    166                var2.getJumpHelper().setJumping();
    167            }
    168
    169            if (!var1.capabilities.isCreativeMode && this.currentSpeed >= this.maxSpeed * 0.5F && this.thisEntity.getRNG().nextFloat() < 0.006F && !this.speedBoosted)
    170            {
    171                ItemStack var20 = var1.getHeldItem();
    172
    173                if (var20 != null && var20.itemID == Item.carrotOnAStick.shiftedIndex)
    174                {
    175                    var20.damageItem(1, var1);
    176
    177                    if (var20.stackSize == 0)
    178                    {
    179                        var1.inventory.mainInventory[var1.inventory.currentItem] = new ItemStack(Item.fishingRod);
    180                    }
    181                }
    182            }
    183
    184            this.thisEntity.moveEntityWithHeading(0.0F, var7);
    185        }
    186
    187        /**
    188         * Return whether the entity's speed is boosted.
    189         */
    190        public boolean isSpeedBoosted()
    191        {
    192            return this.speedBoosted;
    193        }
    194
    195        /**
    196         * Boost the entity's movement speed.
    197         */
    198        public void boostSpeed()
    199        {
    200            this.speedBoosted = true;
    201            this.speedBoostTime = 0;
    202            this.maxSpeedBoostTime = this.thisEntity.getRNG().nextInt(841) + 140;
    203        }
    204
    205        /**
    206         * Return whether the entity is being controlled by a player.
    207         */
    208        public boolean isControlledByPlayer()
    209        {
    210            return !this.isSpeedBoosted() && this.currentSpeed > this.maxSpeed * 0.3F;
    211        }
    212    }