001 package net.minecraft.src; 002 003 public class EntityGhast extends EntityFlying implements IMob 004 { 005 public int courseChangeCooldown = 0; 006 public double waypointX; 007 public double waypointY; 008 public double waypointZ; 009 private Entity targetedEntity = null; 010 011 /** Cooldown time between target loss and new target aquirement. */ 012 private int aggroCooldown = 0; 013 public int prevAttackCounter = 0; 014 public int attackCounter = 0; 015 016 public EntityGhast(World par1World) 017 { 018 super(par1World); 019 this.texture = "/mob/ghast.png"; 020 this.setSize(4.0F, 4.0F); 021 this.isImmuneToFire = true; 022 this.experienceValue = 5; 023 } 024 025 /** 026 * Called when the entity is attacked. 027 */ 028 public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) 029 { 030 if (this.func_85032_ar()) 031 { 032 return false; 033 } 034 else if ("fireball".equals(par1DamageSource.getDamageType()) && par1DamageSource.getEntity() instanceof EntityPlayer) 035 { 036 super.attackEntityFrom(par1DamageSource, 1000); 037 ((EntityPlayer)par1DamageSource.getEntity()).triggerAchievement(AchievementList.ghast); 038 return true; 039 } 040 else 041 { 042 return super.attackEntityFrom(par1DamageSource, par2); 043 } 044 } 045 046 protected void entityInit() 047 { 048 super.entityInit(); 049 this.dataWatcher.addObject(16, Byte.valueOf((byte)0)); 050 } 051 052 public int getMaxHealth() 053 { 054 return 10; 055 } 056 057 /** 058 * Called to update the entity's position/logic. 059 */ 060 public void onUpdate() 061 { 062 super.onUpdate(); 063 byte var1 = this.dataWatcher.getWatchableObjectByte(16); 064 this.texture = var1 == 1 ? "/mob/ghast_fire.png" : "/mob/ghast.png"; 065 } 066 067 protected void updateEntityActionState() 068 { 069 if (!this.worldObj.isRemote && this.worldObj.difficultySetting == 0) 070 { 071 this.setDead(); 072 } 073 074 this.despawnEntity(); 075 this.prevAttackCounter = this.attackCounter; 076 double var1 = this.waypointX - this.posX; 077 double var3 = this.waypointY - this.posY; 078 double var5 = this.waypointZ - this.posZ; 079 double var7 = var1 * var1 + var3 * var3 + var5 * var5; 080 081 if (var7 < 1.0D || var7 > 3600.0D) 082 { 083 this.waypointX = this.posX + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); 084 this.waypointY = this.posY + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); 085 this.waypointZ = this.posZ + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); 086 } 087 088 if (this.courseChangeCooldown-- <= 0) 089 { 090 this.courseChangeCooldown += this.rand.nextInt(5) + 2; 091 var7 = (double)MathHelper.sqrt_double(var7); 092 093 if (this.isCourseTraversable(this.waypointX, this.waypointY, this.waypointZ, var7)) 094 { 095 this.motionX += var1 / var7 * 0.1D; 096 this.motionY += var3 / var7 * 0.1D; 097 this.motionZ += var5 / var7 * 0.1D; 098 } 099 else 100 { 101 this.waypointX = this.posX; 102 this.waypointY = this.posY; 103 this.waypointZ = this.posZ; 104 } 105 } 106 107 if (this.targetedEntity != null && this.targetedEntity.isDead) 108 { 109 this.targetedEntity = null; 110 } 111 112 if (this.targetedEntity == null || this.aggroCooldown-- <= 0) 113 { 114 this.targetedEntity = this.worldObj.getClosestVulnerablePlayerToEntity(this, 100.0D); 115 116 if (this.targetedEntity != null) 117 { 118 this.aggroCooldown = 20; 119 } 120 } 121 122 double var9 = 64.0D; 123 124 if (this.targetedEntity != null && this.targetedEntity.getDistanceSqToEntity(this) < var9 * var9) 125 { 126 double var11 = this.targetedEntity.posX - this.posX; 127 double var13 = this.targetedEntity.boundingBox.minY + (double)(this.targetedEntity.height / 2.0F) - (this.posY + (double)(this.height / 2.0F)); 128 double var15 = this.targetedEntity.posZ - this.posZ; 129 this.renderYawOffset = this.rotationYaw = -((float)Math.atan2(var11, var15)) * 180.0F / (float)Math.PI; 130 131 if (this.canEntityBeSeen(this.targetedEntity)) 132 { 133 if (this.attackCounter == 10) 134 { 135 this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1007, (int)this.posX, (int)this.posY, (int)this.posZ, 0); 136 } 137 138 ++this.attackCounter; 139 140 if (this.attackCounter == 20) 141 { 142 this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1008, (int)this.posX, (int)this.posY, (int)this.posZ, 0); 143 EntityLargeFireball var17 = new EntityLargeFireball(this.worldObj, this, var11, var13, var15); 144 double var18 = 4.0D; 145 Vec3 var20 = this.getLook(1.0F); 146 var17.posX = this.posX + var20.xCoord * var18; 147 var17.posY = this.posY + (double)(this.height / 2.0F) + 0.5D; 148 var17.posZ = this.posZ + var20.zCoord * var18; 149 this.worldObj.spawnEntityInWorld(var17); 150 this.attackCounter = -40; 151 } 152 } 153 else if (this.attackCounter > 0) 154 { 155 --this.attackCounter; 156 } 157 } 158 else 159 { 160 this.renderYawOffset = this.rotationYaw = -((float)Math.atan2(this.motionX, this.motionZ)) * 180.0F / (float)Math.PI; 161 162 if (this.attackCounter > 0) 163 { 164 --this.attackCounter; 165 } 166 } 167 168 if (!this.worldObj.isRemote) 169 { 170 byte var21 = this.dataWatcher.getWatchableObjectByte(16); 171 byte var12 = (byte)(this.attackCounter > 10 ? 1 : 0); 172 173 if (var21 != var12) 174 { 175 this.dataWatcher.updateObject(16, Byte.valueOf(var12)); 176 } 177 } 178 } 179 180 /** 181 * True if the ghast has an unobstructed line of travel to the waypoint. 182 */ 183 private boolean isCourseTraversable(double par1, double par3, double par5, double par7) 184 { 185 double var9 = (this.waypointX - this.posX) / par7; 186 double var11 = (this.waypointY - this.posY) / par7; 187 double var13 = (this.waypointZ - this.posZ) / par7; 188 AxisAlignedBB var15 = this.boundingBox.copy(); 189 190 for (int var16 = 1; (double)var16 < par7; ++var16) 191 { 192 var15.offset(var9, var11, var13); 193 194 if (!this.worldObj.getCollidingBoundingBoxes(this, var15).isEmpty()) 195 { 196 return false; 197 } 198 } 199 200 return true; 201 } 202 203 /** 204 * Returns the sound this mob makes while it's alive. 205 */ 206 protected String getLivingSound() 207 { 208 return "mob.ghast.moan"; 209 } 210 211 /** 212 * Returns the sound this mob makes when it is hurt. 213 */ 214 protected String getHurtSound() 215 { 216 return "mob.ghast.scream"; 217 } 218 219 /** 220 * Returns the sound this mob makes on death. 221 */ 222 protected String getDeathSound() 223 { 224 return "mob.ghast.death"; 225 } 226 227 /** 228 * Returns the item ID for the item the mob drops on death. 229 */ 230 protected int getDropItemId() 231 { 232 return Item.gunpowder.shiftedIndex; 233 } 234 235 /** 236 * Drop 0-2 items of this living's type 237 */ 238 protected void dropFewItems(boolean par1, int par2) 239 { 240 int var3 = this.rand.nextInt(2) + this.rand.nextInt(1 + par2); 241 int var4; 242 243 for (var4 = 0; var4 < var3; ++var4) 244 { 245 this.dropItem(Item.ghastTear.shiftedIndex, 1); 246 } 247 248 var3 = this.rand.nextInt(3) + this.rand.nextInt(1 + par2); 249 250 for (var4 = 0; var4 < var3; ++var4) 251 { 252 this.dropItem(Item.gunpowder.shiftedIndex, 1); 253 } 254 } 255 256 /** 257 * Returns the volume for the sounds this mob makes. 258 */ 259 protected float getSoundVolume() 260 { 261 return 10.0F; 262 } 263 264 /** 265 * Checks if the entity's current position is a valid location to spawn this entity. 266 */ 267 public boolean getCanSpawnHere() 268 { 269 return this.rand.nextInt(20) == 0 && super.getCanSpawnHere() && this.worldObj.difficultySetting > 0; 270 } 271 272 /** 273 * Will return how many at most can spawn in a chunk at once. 274 */ 275 public int getMaxSpawnedInChunk() 276 { 277 return 1; 278 } 279 }