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 var22 = 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() * var22;
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.itemID)
174 {
175 var20.damageItem(1, var1);
176
177 if (var20.stackSize == 0)
178 {
179 ItemStack var21 = new ItemStack(Item.fishingRod);
180 var21.setTagCompound(var20.stackTagCompound);
181 var1.inventory.mainInventory[var1.inventory.currentItem] = var21;
182 }
183 }
184 }
185
186 this.thisEntity.moveEntityWithHeading(0.0F, var7);
187 }
188
189 /**
190 * Return whether the entity's speed is boosted.
191 */
192 public boolean isSpeedBoosted()
193 {
194 return this.speedBoosted;
195 }
196
197 /**
198 * Boost the entity's movement speed.
199 */
200 public void boostSpeed()
201 {
202 this.speedBoosted = true;
203 this.speedBoostTime = 0;
204 this.maxSpeedBoostTime = this.thisEntity.getRNG().nextInt(841) + 140;
205 }
206
207 /**
208 * Return whether the entity is being controlled by a player.
209 */
210 public boolean isControlledByPlayer()
211 {
212 return !this.isSpeedBoosted() && this.currentSpeed > this.maxSpeed * 0.3F;
213 }
214 }