package net.minecraft.entity.projectile; import cpw.mods.fml.relauncher.Side; import cpw.mods.fml.relauncher.SideOnly; import java.util.List; import net.minecraft.block.Block; import net.minecraft.enchantment.EnchantmentThorns; import net.minecraft.entity.Entity; import net.minecraft.entity.EntityLiving; import net.minecraft.entity.IProjectile; import net.minecraft.entity.monster.EntityEnderman; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.player.EntityPlayerMP; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.network.packet.Packet70GameEvent; import net.minecraft.util.AxisAlignedBB; import net.minecraft.util.DamageSource; import net.minecraft.util.MathHelper; import net.minecraft.util.MovingObjectPosition; import net.minecraft.util.Vec3; import net.minecraft.world.World; public class EntityArrow extends Entity implements IProjectile { private int xTile = -1; private int yTile = -1; private int zTile = -1; private int inTile = 0; private int inData = 0; private boolean inGround = false; /** 1 if the player can pick up the arrow */ public int canBePickedUp = 0; /** Seems to be some sort of timer for animating an arrow. */ public int arrowShake = 0; /** The owner of this arrow. */ public Entity shootingEntity; private int ticksInGround; private int ticksInAir = 0; private double damage = 2.0D; /** The amount of knockback an arrow applies when it hits a mob. */ private int knockbackStrength; public EntityArrow(World par1World) { super(par1World); this.renderDistanceWeight = 10.0D; this.setSize(0.5F, 0.5F); } public EntityArrow(World par1World, double par2, double par4, double par6) { super(par1World); this.renderDistanceWeight = 10.0D; this.setSize(0.5F, 0.5F); this.setPosition(par2, par4, par6); this.yOffset = 0.0F; } public EntityArrow(World par1World, EntityLiving par2EntityLiving, EntityLiving par3EntityLiving, float par4, float par5) { super(par1World); this.renderDistanceWeight = 10.0D; this.shootingEntity = par2EntityLiving; if (par2EntityLiving instanceof EntityPlayer) { this.canBePickedUp = 1; } this.posY = par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight() - 0.10000000149011612D; double var6 = par3EntityLiving.posX - par2EntityLiving.posX; double var8 = par3EntityLiving.posY + (double)par3EntityLiving.getEyeHeight() - 0.699999988079071D - this.posY; double var10 = par3EntityLiving.posZ - par2EntityLiving.posZ; double var12 = (double)MathHelper.sqrt_double(var6 * var6 + var10 * var10); if (var12 >= 1.0E-7D) { float var14 = (float)(Math.atan2(var10, var6) * 180.0D / Math.PI) - 90.0F; float var15 = (float)(-(Math.atan2(var8, var12) * 180.0D / Math.PI)); double var16 = var6 / var12; double var18 = var10 / var12; this.setLocationAndAngles(par2EntityLiving.posX + var16, this.posY, par2EntityLiving.posZ + var18, var14, var15); this.yOffset = 0.0F; float var20 = (float)var12 * 0.2F; this.setThrowableHeading(var6, var8 + (double)var20, var10, par4, par5); } } public EntityArrow(World par1World, EntityLiving par2EntityLiving, float par3) { super(par1World); this.renderDistanceWeight = 10.0D; this.shootingEntity = par2EntityLiving; if (par2EntityLiving instanceof EntityPlayer) { this.canBePickedUp = 1; } this.setSize(0.5F, 0.5F); this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight(), par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch); this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F); this.posY -= 0.10000000149011612D; this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F); this.setPosition(this.posX, this.posY, this.posZ); this.yOffset = 0.0F; this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI)); this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI)); this.motionY = (double)(-MathHelper.sin(this.rotationPitch / 180.0F * (float)Math.PI)); this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, par3 * 1.5F, 1.0F); } protected void entityInit() { this.dataWatcher.addObject(16, Byte.valueOf((byte)0)); } /** * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction. */ public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8) { float var9 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5); par1 /= (double)var9; par3 /= (double)var9; par5 /= (double)var9; par1 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8; par3 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8; par5 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8; par1 *= (double)par7; par3 *= (double)par7; par5 *= (double)par7; this.motionX = par1; this.motionY = par3; this.motionZ = par5; float var10 = MathHelper.sqrt_double(par1 * par1 + par5 * par5); this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI); this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var10) * 180.0D / Math.PI); this.ticksInGround = 0; } @SideOnly(Side.CLIENT) /** * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX, * posY, posZ, yaw, pitch */ public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9) { this.setPosition(par1, par3, par5); this.setRotation(par7, par8); } @SideOnly(Side.CLIENT) /** * Sets the velocity to the args. Args: x, y, z */ public void setVelocity(double par1, double par3, double par5) { this.motionX = par1; this.motionY = par3; this.motionZ = par5; if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F) { float var7 = MathHelper.sqrt_double(par1 * par1 + par5 * par5); this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI); this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var7) * 180.0D / Math.PI); this.prevRotationPitch = this.rotationPitch; this.prevRotationYaw = this.rotationYaw; this.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, this.rotationPitch); this.ticksInGround = 0; } } /** * Called to update the entity's position/logic. */ public void onUpdate() { super.onUpdate(); if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F) { float var1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ); this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI); this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(this.motionY, (double)var1) * 180.0D / Math.PI); } int var16 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile); if (var16 > 0) { Block.blocksList[var16].setBlockBoundsBasedOnState(this.worldObj, this.xTile, this.yTile, this.zTile); AxisAlignedBB var2 = Block.blocksList[var16].getCollisionBoundingBoxFromPool(this.worldObj, this.xTile, this.yTile, this.zTile); if (var2 != null && var2.isVecInside(this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ))) { this.inGround = true; } } if (this.arrowShake > 0) { --this.arrowShake; } if (this.inGround) { int var18 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile); int var19 = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile); if (var18 == this.inTile && var19 == this.inData) { ++this.ticksInGround; if (this.ticksInGround == 1200) { this.setDead(); } } else { this.inGround = false; this.motionX *= (double)(this.rand.nextFloat() * 0.2F); this.motionY *= (double)(this.rand.nextFloat() * 0.2F); this.motionZ *= (double)(this.rand.nextFloat() * 0.2F); this.ticksInGround = 0; this.ticksInAir = 0; } } else { ++this.ticksInAir; Vec3 var17 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ); Vec3 var3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ); MovingObjectPosition var4 = this.worldObj.rayTraceBlocks_do_do(var17, var3, false, true); var17 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ); var3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ); if (var4 != null) { var3 = this.worldObj.getWorldVec3Pool().getVecFromPool(var4.hitVec.xCoord, var4.hitVec.yCoord, var4.hitVec.zCoord); } Entity var5 = null; List var6 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D)); double var7 = 0.0D; int var9; float var11; for (var9 = 0; var9 < var6.size(); ++var9) { Entity var10 = (Entity)var6.get(var9); if (var10.canBeCollidedWith() && (var10 != this.shootingEntity || this.ticksInAir >= 5)) { var11 = 0.3F; AxisAlignedBB var12 = var10.boundingBox.expand((double)var11, (double)var11, (double)var11); MovingObjectPosition var13 = var12.calculateIntercept(var17, var3); if (var13 != null) { double var14 = var17.distanceTo(var13.hitVec); if (var14 < var7 || var7 == 0.0D) { var5 = var10; var7 = var14; } } } } if (var5 != null) { var4 = new MovingObjectPosition(var5); } float var20; float var26; if (var4 != null) { if (var4.entityHit != null) { var20 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ); int var23 = MathHelper.ceiling_double_int((double)var20 * this.damage); if (this.getIsCritical()) { var23 += this.rand.nextInt(var23 / 2 + 2); } DamageSource var21 = null; if (this.shootingEntity == null) { var21 = DamageSource.causeArrowDamage(this, this); } else { var21 = DamageSource.causeArrowDamage(this, this.shootingEntity); } if (this.isBurning() && !(var4.entityHit instanceof EntityEnderman)) { var4.entityHit.setFire(5); } if (var4.entityHit.attackEntityFrom(var21, var23)) { if (var4.entityHit instanceof EntityLiving) { EntityLiving var24 = (EntityLiving)var4.entityHit; if (!this.worldObj.isRemote) { var24.setArrowCountInEntity(var24.getArrowCountInEntity() + 1); } if (this.knockbackStrength > 0) { var26 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ); if (var26 > 0.0F) { var4.entityHit.addVelocity(this.motionX * (double)this.knockbackStrength * 0.6000000238418579D / (double)var26, 0.1D, this.motionZ * (double)this.knockbackStrength * 0.6000000238418579D / (double)var26); } } if (this.shootingEntity != null) { EnchantmentThorns.func_92044_a(this.shootingEntity, var24, this.rand); } if (this.shootingEntity != null && var4.entityHit != this.shootingEntity && var4.entityHit instanceof EntityPlayer && this.shootingEntity instanceof EntityPlayerMP) { ((EntityPlayerMP)this.shootingEntity).playerNetServerHandler.sendPacketToPlayer(new Packet70GameEvent(6, 0)); } } this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F)); if (!(var4.entityHit instanceof EntityEnderman)) { this.setDead(); } } else { this.motionX *= -0.10000000149011612D; this.motionY *= -0.10000000149011612D; this.motionZ *= -0.10000000149011612D; this.rotationYaw += 180.0F; this.prevRotationYaw += 180.0F; this.ticksInAir = 0; } } else { this.xTile = var4.blockX; this.yTile = var4.blockY; this.zTile = var4.blockZ; this.inTile = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile); this.inData = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile); this.motionX = (double)((float)(var4.hitVec.xCoord - this.posX)); this.motionY = (double)((float)(var4.hitVec.yCoord - this.posY)); this.motionZ = (double)((float)(var4.hitVec.zCoord - this.posZ)); var20 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ); this.posX -= this.motionX / (double)var20 * 0.05000000074505806D; this.posY -= this.motionY / (double)var20 * 0.05000000074505806D; this.posZ -= this.motionZ / (double)var20 * 0.05000000074505806D; this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F)); this.inGround = true; this.arrowShake = 7; this.setIsCritical(false); if (this.inTile != 0) { Block.blocksList[this.inTile].onEntityCollidedWithBlock(this.worldObj, this.xTile, this.yTile, this.zTile, this); } } } if (this.getIsCritical()) { for (var9 = 0; var9 < 4; ++var9) { this.worldObj.spawnParticle("crit", this.posX + this.motionX * (double)var9 / 4.0D, this.posY + this.motionY * (double)var9 / 4.0D, this.posZ + this.motionZ * (double)var9 / 4.0D, -this.motionX, -this.motionY + 0.2D, -this.motionZ); } } this.posX += this.motionX; this.posY += this.motionY; this.posZ += this.motionZ; var20 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ); this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI); for (this.rotationPitch = (float)(Math.atan2(this.motionY, (double)var20) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F) { ; } while (this.rotationPitch - this.prevRotationPitch >= 180.0F) { this.prevRotationPitch += 360.0F; } while (this.rotationYaw - this.prevRotationYaw < -180.0F) { this.prevRotationYaw -= 360.0F; } while (this.rotationYaw - this.prevRotationYaw >= 180.0F) { this.prevRotationYaw += 360.0F; } this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F; this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F; float var22 = 0.99F; var11 = 0.05F; if (this.isInWater()) { for (int var25 = 0; var25 < 4; ++var25) { var26 = 0.25F; this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)var26, this.posY - this.motionY * (double)var26, this.posZ - this.motionZ * (double)var26, this.motionX, this.motionY, this.motionZ); } var22 = 0.8F; } this.motionX *= (double)var22; this.motionY *= (double)var22; this.motionZ *= (double)var22; this.motionY -= (double)var11; this.setPosition(this.posX, this.posY, this.posZ); this.doBlockCollisions(); } } /** * (abstract) Protected helper method to write subclass entity data to NBT. */ public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) { par1NBTTagCompound.setShort("xTile", (short)this.xTile); par1NBTTagCompound.setShort("yTile", (short)this.yTile); par1NBTTagCompound.setShort("zTile", (short)this.zTile); par1NBTTagCompound.setByte("inTile", (byte)this.inTile); par1NBTTagCompound.setByte("inData", (byte)this.inData); par1NBTTagCompound.setByte("shake", (byte)this.arrowShake); par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0)); par1NBTTagCompound.setByte("pickup", (byte)this.canBePickedUp); par1NBTTagCompound.setDouble("damage", this.damage); } /** * (abstract) Protected helper method to read subclass entity data from NBT. */ public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) { this.xTile = par1NBTTagCompound.getShort("xTile"); this.yTile = par1NBTTagCompound.getShort("yTile"); this.zTile = par1NBTTagCompound.getShort("zTile"); this.inTile = par1NBTTagCompound.getByte("inTile") & 255; this.inData = par1NBTTagCompound.getByte("inData") & 255; this.arrowShake = par1NBTTagCompound.getByte("shake") & 255; this.inGround = par1NBTTagCompound.getByte("inGround") == 1; if (par1NBTTagCompound.hasKey("damage")) { this.damage = par1NBTTagCompound.getDouble("damage"); } if (par1NBTTagCompound.hasKey("pickup")) { this.canBePickedUp = par1NBTTagCompound.getByte("pickup"); } else if (par1NBTTagCompound.hasKey("player")) { this.canBePickedUp = par1NBTTagCompound.getBoolean("player") ? 1 : 0; } } /** * Called by a player entity when they collide with an entity */ public void onCollideWithPlayer(EntityPlayer par1EntityPlayer) { if (!this.worldObj.isRemote && this.inGround && this.arrowShake <= 0) { boolean var2 = this.canBePickedUp == 1 || this.canBePickedUp == 2 && par1EntityPlayer.capabilities.isCreativeMode; if (this.canBePickedUp == 1 && !par1EntityPlayer.inventory.addItemStackToInventory(new ItemStack(Item.arrow, 1))) { var2 = false; } if (var2) { this.playSound("random.pop", 0.2F, ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.0F) * 2.0F); par1EntityPlayer.onItemPickup(this, 1); this.setDead(); } } } /** * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to * prevent them from trampling crops */ protected boolean canTriggerWalking() { return false; } @SideOnly(Side.CLIENT) public float getShadowSize() { return 0.0F; } public void setDamage(double par1) { this.damage = par1; } public double getDamage() { return this.damage; } /** * Sets the amount of knockback the arrow applies when it hits a mob. */ public void setKnockbackStrength(int par1) { this.knockbackStrength = par1; } /** * If returns false, the item will not inflict any damage against entities. */ public boolean canAttackWithItem() { return false; } /** * Whether the arrow has a stream of critical hit particles flying behind it. */ public void setIsCritical(boolean par1) { byte var2 = this.dataWatcher.getWatchableObjectByte(16); if (par1) { this.dataWatcher.updateObject(16, Byte.valueOf((byte)(var2 | 1))); } else { this.dataWatcher.updateObject(16, Byte.valueOf((byte)(var2 & -2))); } } /** * Whether the arrow has a stream of critical hit particles flying behind it. */ public boolean getIsCritical() { byte var1 = this.dataWatcher.getWatchableObjectByte(16); return (var1 & 1) != 0; } }