package net.minecraft.entity.monster; import net.minecraft.entity.Entity; import net.minecraft.entity.EntityFlying; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.projectile.EntityLargeFireball; import net.minecraft.item.Item; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.stats.AchievementList; import net.minecraft.util.AxisAlignedBB; import net.minecraft.util.DamageSource; import net.minecraft.util.MathHelper; import net.minecraft.util.Vec3; import net.minecraft.world.World; public class EntityGhast extends EntityFlying implements IMob { public int courseChangeCooldown = 0; public double waypointX; public double waypointY; public double waypointZ; private Entity targetedEntity = null; /** Cooldown time between target loss and new target aquirement. */ private int aggroCooldown = 0; public int prevAttackCounter = 0; public int attackCounter = 0; private int field_92009_j = 1; public EntityGhast(World par1World) { super(par1World); this.texture = "/mob/ghast.png"; this.setSize(4.0F, 4.0F); this.isImmuneToFire = true; this.experienceValue = 5; } /** * Called when the entity is attacked. */ public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) { if (this.isEntityInvulnerable()) { return false; } else if ("fireball".equals(par1DamageSource.getDamageType()) && par1DamageSource.getEntity() instanceof EntityPlayer) { super.attackEntityFrom(par1DamageSource, 1000); ((EntityPlayer)par1DamageSource.getEntity()).triggerAchievement(AchievementList.ghast); return true; } else { return super.attackEntityFrom(par1DamageSource, par2); } } protected void entityInit() { super.entityInit(); this.dataWatcher.addObject(16, Byte.valueOf((byte)0)); } public int getMaxHealth() { return 10; } /** * Called to update the entity's position/logic. */ public void onUpdate() { super.onUpdate(); byte var1 = this.dataWatcher.getWatchableObjectByte(16); this.texture = var1 == 1 ? "/mob/ghast_fire.png" : "/mob/ghast.png"; } protected void updateEntityActionState() { if (!this.worldObj.isRemote && this.worldObj.difficultySetting == 0) { this.setDead(); } this.despawnEntity(); this.prevAttackCounter = this.attackCounter; double var1 = this.waypointX - this.posX; double var3 = this.waypointY - this.posY; double var5 = this.waypointZ - this.posZ; double var7 = var1 * var1 + var3 * var3 + var5 * var5; if (var7 < 1.0D || var7 > 3600.0D) { this.waypointX = this.posX + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); this.waypointY = this.posY + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); this.waypointZ = this.posZ + (double)((this.rand.nextFloat() * 2.0F - 1.0F) * 16.0F); } if (this.courseChangeCooldown-- <= 0) { this.courseChangeCooldown += this.rand.nextInt(5) + 2; var7 = (double)MathHelper.sqrt_double(var7); if (this.isCourseTraversable(this.waypointX, this.waypointY, this.waypointZ, var7)) { this.motionX += var1 / var7 * 0.1D; this.motionY += var3 / var7 * 0.1D; this.motionZ += var5 / var7 * 0.1D; } else { this.waypointX = this.posX; this.waypointY = this.posY; this.waypointZ = this.posZ; } } if (this.targetedEntity != null && this.targetedEntity.isDead) { this.targetedEntity = null; } if (this.targetedEntity == null || this.aggroCooldown-- <= 0) { this.targetedEntity = this.worldObj.getClosestVulnerablePlayerToEntity(this, 100.0D); if (this.targetedEntity != null) { this.aggroCooldown = 20; } } double var9 = 64.0D; if (this.targetedEntity != null && this.targetedEntity.getDistanceSqToEntity(this) < var9 * var9) { double var11 = this.targetedEntity.posX - this.posX; double var13 = this.targetedEntity.boundingBox.minY + (double)(this.targetedEntity.height / 2.0F) - (this.posY + (double)(this.height / 2.0F)); double var15 = this.targetedEntity.posZ - this.posZ; this.renderYawOffset = this.rotationYaw = -((float)Math.atan2(var11, var15)) * 180.0F / (float)Math.PI; if (this.canEntityBeSeen(this.targetedEntity)) { if (this.attackCounter == 10) { this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1007, (int)this.posX, (int)this.posY, (int)this.posZ, 0); } ++this.attackCounter; if (this.attackCounter == 20) { this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1008, (int)this.posX, (int)this.posY, (int)this.posZ, 0); EntityLargeFireball var17 = new EntityLargeFireball(this.worldObj, this, var11, var13, var15); var17.field_92012_e = this.field_92009_j; double var18 = 4.0D; Vec3 var20 = this.getLook(1.0F); var17.posX = this.posX + var20.xCoord * var18; var17.posY = this.posY + (double)(this.height / 2.0F) + 0.5D; var17.posZ = this.posZ + var20.zCoord * var18; this.worldObj.spawnEntityInWorld(var17); this.attackCounter = -40; } } else if (this.attackCounter > 0) { --this.attackCounter; } } else { this.renderYawOffset = this.rotationYaw = -((float)Math.atan2(this.motionX, this.motionZ)) * 180.0F / (float)Math.PI; if (this.attackCounter > 0) { --this.attackCounter; } } if (!this.worldObj.isRemote) { byte var21 = this.dataWatcher.getWatchableObjectByte(16); byte var12 = (byte)(this.attackCounter > 10 ? 1 : 0); if (var21 != var12) { this.dataWatcher.updateObject(16, Byte.valueOf(var12)); } } } /** * True if the ghast has an unobstructed line of travel to the waypoint. */ private boolean isCourseTraversable(double par1, double par3, double par5, double par7) { double var9 = (this.waypointX - this.posX) / par7; double var11 = (this.waypointY - this.posY) / par7; double var13 = (this.waypointZ - this.posZ) / par7; AxisAlignedBB var15 = this.boundingBox.copy(); for (int var16 = 1; (double)var16 < par7; ++var16) { var15.offset(var9, var11, var13); if (!this.worldObj.getCollidingBoundingBoxes(this, var15).isEmpty()) { return false; } } return true; } /** * Returns the sound this mob makes while it's alive. */ protected String getLivingSound() { return "mob.ghast.moan"; } /** * Returns the sound this mob makes when it is hurt. */ protected String getHurtSound() { return "mob.ghast.scream"; } /** * Returns the sound this mob makes on death. */ protected String getDeathSound() { return "mob.ghast.death"; } /** * Returns the item ID for the item the mob drops on death. */ protected int getDropItemId() { return Item.gunpowder.itemID; } /** * Drop 0-2 items of this living's type. @param par1 - Whether this entity has recently been hit by a player. @param * par2 - Level of Looting used to kill this mob. */ protected void dropFewItems(boolean par1, int par2) { int var3 = this.rand.nextInt(2) + this.rand.nextInt(1 + par2); int var4; for (var4 = 0; var4 < var3; ++var4) { this.dropItem(Item.ghastTear.itemID, 1); } var3 = this.rand.nextInt(3) + this.rand.nextInt(1 + par2); for (var4 = 0; var4 < var3; ++var4) { this.dropItem(Item.gunpowder.itemID, 1); } } /** * Returns the volume for the sounds this mob makes. */ protected float getSoundVolume() { return 10.0F; } /** * Checks if the entity's current position is a valid location to spawn this entity. */ public boolean getCanSpawnHere() { return this.rand.nextInt(20) == 0 && super.getCanSpawnHere() && this.worldObj.difficultySetting > 0; } /** * Will return how many at most can spawn in a chunk at once. */ public int getMaxSpawnedInChunk() { return 1; } /** * (abstract) Protected helper method to write subclass entity data to NBT. */ public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) { super.writeEntityToNBT(par1NBTTagCompound); par1NBTTagCompound.setInteger("ExplosionPower", this.field_92009_j); } /** * (abstract) Protected helper method to read subclass entity data from NBT. */ public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) { super.readEntityFromNBT(par1NBTTagCompound); if (par1NBTTagCompound.hasKey("ExplosionPower")) { this.field_92009_j = par1NBTTagCompound.getInteger("ExplosionPower"); } } }