package net.minecraft.entity.projectile; import cpw.mods.fml.relauncher.Side; import cpw.mods.fml.relauncher.SideOnly; import java.util.List; import net.minecraft.entity.Entity; import net.minecraft.entity.EntityLiving; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.nbt.NBTTagDouble; import net.minecraft.nbt.NBTTagList; 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 abstract class EntityFireball extends Entity { private int xTile = -1; private int yTile = -1; private int zTile = -1; private int inTile = 0; private boolean inGround = false; public EntityLiving shootingEntity; private int ticksAlive; private int ticksInAir = 0; public double accelerationX; public double accelerationY; public double accelerationZ; public EntityFireball(World par1World) { super(par1World); this.setSize(1.0F, 1.0F); } protected void entityInit() {} @SideOnly(Side.CLIENT) /** * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge * length * 64 * renderDistanceWeight Args: distance */ public boolean isInRangeToRenderDist(double par1) { double d1 = this.boundingBox.getAverageEdgeLength() * 4.0D; d1 *= 64.0D; return par1 < d1 * d1; } public EntityFireball(World par1World, double par2, double par4, double par6, double par8, double par10, double par12) { super(par1World); this.setSize(1.0F, 1.0F); this.setLocationAndAngles(par2, par4, par6, this.rotationYaw, this.rotationPitch); this.setPosition(par2, par4, par6); double d6 = (double)MathHelper.sqrt_double(par8 * par8 + par10 * par10 + par12 * par12); this.accelerationX = par8 / d6 * 0.1D; this.accelerationY = par10 / d6 * 0.1D; this.accelerationZ = par12 / d6 * 0.1D; } public EntityFireball(World par1World, EntityLiving par2EntityLiving, double par3, double par5, double par7) { super(par1World); this.shootingEntity = par2EntityLiving; this.setSize(1.0F, 1.0F); this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY, par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch); this.setPosition(this.posX, this.posY, this.posZ); this.yOffset = 0.0F; this.motionX = this.motionY = this.motionZ = 0.0D; par3 += this.rand.nextGaussian() * 0.4D; par5 += this.rand.nextGaussian() * 0.4D; par7 += this.rand.nextGaussian() * 0.4D; double d3 = (double)MathHelper.sqrt_double(par3 * par3 + par5 * par5 + par7 * par7); this.accelerationX = par3 / d3 * 0.1D; this.accelerationY = par5 / d3 * 0.1D; this.accelerationZ = par7 / d3 * 0.1D; } /** * Called to update the entity's position/logic. */ public void onUpdate() { if (!this.worldObj.isRemote && (this.shootingEntity != null && this.shootingEntity.isDead || !this.worldObj.blockExists((int)this.posX, (int)this.posY, (int)this.posZ))) { this.setDead(); } else { super.onUpdate(); this.setFire(1); if (this.inGround) { int i = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile); if (i == this.inTile) { ++this.ticksAlive; if (this.ticksAlive == 600) { this.setDead(); } return; } 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.ticksAlive = 0; this.ticksInAir = 0; } else { ++this.ticksInAir; } Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ); Vec3 vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ); MovingObjectPosition movingobjectposition = this.worldObj.rayTraceBlocks(vec3, vec31); vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ); vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ); if (movingobjectposition != null) { vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(movingobjectposition.hitVec.xCoord, movingobjectposition.hitVec.yCoord, movingobjectposition.hitVec.zCoord); } Entity entity = null; List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D)); double d0 = 0.0D; for (int j = 0; j < list.size(); ++j) { Entity entity1 = (Entity)list.get(j); if (entity1.canBeCollidedWith() && (!entity1.isEntityEqual(this.shootingEntity) || this.ticksInAir >= 25)) { float f = 0.3F; AxisAlignedBB axisalignedbb = entity1.boundingBox.expand((double)f, (double)f, (double)f); MovingObjectPosition movingobjectposition1 = axisalignedbb.calculateIntercept(vec3, vec31); if (movingobjectposition1 != null) { double d1 = vec3.distanceTo(movingobjectposition1.hitVec); if (d1 < d0 || d0 == 0.0D) { entity = entity1; d0 = d1; } } } } if (entity != null) { movingobjectposition = new MovingObjectPosition(entity); } if (movingobjectposition != null) { this.onImpact(movingobjectposition); } this.posX += this.motionX; this.posY += this.motionY; this.posZ += this.motionZ; float f1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ); this.rotationYaw = (float)(Math.atan2(this.motionZ, this.motionX) * 180.0D / Math.PI) + 90.0F; for (this.rotationPitch = (float)(Math.atan2((double)f1, this.motionY) * 180.0D / Math.PI) - 90.0F; 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 f2 = this.getMotionFactor(); if (this.isInWater()) { for (int k = 0; k < 4; ++k) { float f3 = 0.25F; this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)f3, this.posY - this.motionY * (double)f3, this.posZ - this.motionZ * (double)f3, this.motionX, this.motionY, this.motionZ); } f2 = 0.8F; } this.motionX += this.accelerationX; this.motionY += this.accelerationY; this.motionZ += this.accelerationZ; this.motionX *= (double)f2; this.motionY *= (double)f2; this.motionZ *= (double)f2; this.worldObj.spawnParticle("smoke", this.posX, this.posY + 0.5D, this.posZ, 0.0D, 0.0D, 0.0D); this.setPosition(this.posX, this.posY, this.posZ); } } /** * Return the motion factor for this projectile. The factor is multiplied by the original motion. */ protected float getMotionFactor() { return 0.95F; } /** * Called when this EntityFireball hits a block or entity. */ protected abstract void onImpact(MovingObjectPosition movingobjectposition); /** * (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("inGround", (byte)(this.inGround ? 1 : 0)); par1NBTTagCompound.setTag("direction", this.newDoubleNBTList(new double[] {this.motionX, this.motionY, this.motionZ})); } /** * (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.inGround = par1NBTTagCompound.getByte("inGround") == 1; if (par1NBTTagCompound.hasKey("direction")) { NBTTagList nbttaglist = par1NBTTagCompound.getTagList("direction"); this.motionX = ((NBTTagDouble)nbttaglist.tagAt(0)).data; this.motionY = ((NBTTagDouble)nbttaglist.tagAt(1)).data; this.motionZ = ((NBTTagDouble)nbttaglist.tagAt(2)).data; } else { this.setDead(); } } /** * Returns true if other Entities should be prevented from moving through this Entity. */ public boolean canBeCollidedWith() { return true; } public float getCollisionBorderSize() { return 1.0F; } /** * Called when the entity is attacked. */ public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) { if (this.isEntityInvulnerable()) { return false; } else { this.setBeenAttacked(); if (par1DamageSource.getEntity() != null) { Vec3 vec3 = par1DamageSource.getEntity().getLookVec(); if (vec3 != null) { this.motionX = vec3.xCoord; this.motionY = vec3.yCoord; this.motionZ = vec3.zCoord; this.accelerationX = this.motionX * 0.1D; this.accelerationY = this.motionY * 0.1D; this.accelerationZ = this.motionZ * 0.1D; } if (par1DamageSource.getEntity() instanceof EntityLiving) { this.shootingEntity = (EntityLiving)par1DamageSource.getEntity(); } return true; } else { return false; } } } @SideOnly(Side.CLIENT) public float getShadowSize() { return 0.0F; } /** * Gets how bright this entity is. */ public float getBrightness(float par1) { return 1.0F; } @SideOnly(Side.CLIENT) public int getBrightnessForRender(float par1) { return 15728880; } }