    001    package net.minecraft.src;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005    import java.util.Iterator;
    006    import java.util.List;
    007
    008    public abstract class EntityThrowable extends Entity implements IProjectile
    009    {
    010        private int xTile = -1;
    011        private int yTile = -1;
    012        private int zTile = -1;
    013        private int inTile = 0;
    014        protected boolean inGround = false;
    015        public int throwableShake = 0;
    016
    017        /**
    018         * Is the entity that throws this 'thing' (snowball, ender pearl, eye of ender or potion)
    019         */
    020        private EntityLiving thrower;
    021        private String field_85053_h = null;
    022        private int ticksInGround;
    023        private int ticksInAir = 0;
    024
    025        public EntityThrowable(World par1World)
    026        {
    027            super(par1World);
    028            this.setSize(0.25F, 0.25F);
    029        }
    030
    031        protected void entityInit() {}
    032
    033        @SideOnly(Side.CLIENT)
    034
    035        /**
    036         * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge
    037         * length * 64 * renderDistanceWeight Args: distance
    038         */
    039        public boolean isInRangeToRenderDist(double par1)
    040        {
    041            double var3 = this.boundingBox.getAverageEdgeLength() * 4.0D;
    042            var3 *= 64.0D;
    043            return par1 < var3 * var3;
    044        }
    045
    046        public EntityThrowable(World par1World, EntityLiving par2EntityLiving)
    047        {
    048            super(par1World);
    049            this.thrower = par2EntityLiving;
    050            this.setSize(0.25F, 0.25F);
    051            this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight(), par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch);
    052            this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    053            this.posY -= 0.10000000149011612D;
    054            this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    055            this.setPosition(this.posX, this.posY, this.posZ);
    056            this.yOffset = 0.0F;
    057            float var3 = 0.4F;
    058            this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
    059            this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
    060            this.motionY = (double)(-MathHelper.sin((this.rotationPitch + this.func_70183_g()) / 180.0F * (float)Math.PI) * var3);
    061            this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, this.func_70182_d(), 1.0F);
    062        }
    063
    064        public EntityThrowable(World par1World, double par2, double par4, double par6)
    065        {
    066            super(par1World);
    067            this.ticksInGround = 0;
    068            this.setSize(0.25F, 0.25F);
    069            this.setPosition(par2, par4, par6);
    070            this.yOffset = 0.0F;
    071        }
    072
    073        protected float func_70182_d()
    074        {
    075            return 1.5F;
    076        }
    077
    078        protected float func_70183_g()
    079        {
    080            return 0.0F;
    081        }
    082
    083        /**
    084         * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
    085         */
    086        public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8)
    087        {
    088            float var9 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5);
    089            par1 /= (double)var9;
    090            par3 /= (double)var9;
    091            par5 /= (double)var9;
    092            par1 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    093            par3 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    094            par5 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    095            par1 *= (double)par7;
    096            par3 *= (double)par7;
    097            par5 *= (double)par7;
    098            this.motionX = par1;
    099            this.motionY = par3;
    100            this.motionZ = par5;
    101            float var10 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    102            this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    103            this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var10) * 180.0D / Math.PI);
    104            this.ticksInGround = 0;
    105        }
    106
    107        @SideOnly(Side.CLIENT)
    108
    109        /**
    110         * Sets the velocity to the args. Args: x, y, z
    111         */
    112        public void setVelocity(double par1, double par3, double par5)
    113        {
    114            this.motionX = par1;
    115            this.motionY = par3;
    116            this.motionZ = par5;
    117
    118            if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
    119            {
    120                float var7 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    121                this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    122                this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var7) * 180.0D / Math.PI);
    123            }
    124        }
    125
    126        /**
    127         * Called to update the entity's position/logic.
    128         */
    129        public void onUpdate()
    130        {
    131            this.lastTickPosX = this.posX;
    132            this.lastTickPosY = this.posY;
    133            this.lastTickPosZ = this.posZ;
    134            super.onUpdate();
    135
    136            if (this.throwableShake > 0)
    137            {
    138                --this.throwableShake;
    139            }
    140
    141            if (this.inGround)
    142            {
    143                int var1 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
    144
    145                if (var1 == this.inTile)
    146                {
    147                    ++this.ticksInGround;
    148
    149                    if (this.ticksInGround == 1200)
    150                    {
    151                        this.setDead();
    152                    }
    153
    154                    return;
    155                }
    156
    157                this.inGround = false;
    158                this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
    159                this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
    160                this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
    161                this.ticksInGround = 0;
    162                this.ticksInAir = 0;
    163            }
    164            else
    165            {
    166                ++this.ticksInAir;
    167            }
    168
    169            Vec3 var16 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    170            Vec3 var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    171            MovingObjectPosition var3 = this.worldObj.rayTraceBlocks(var16, var2);
    172            var16 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    173            var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    174
    175            if (var3 != null)
    176            {
    177                var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(var3.hitVec.xCoord, var3.hitVec.yCoord, var3.hitVec.zCoord);
    178            }
    179
    180            if (!this.worldObj.isRemote)
    181            {
    182                Entity var4 = null;
    183                List var5 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
    184                double var6 = 0.0D;
    185                EntityLiving var8 = this.func_85052_h();
    186                Iterator var9 = var5.iterator();
    187
    188                while (var9.hasNext())
    189                {
    190                    Entity var10 = (Entity)var9.next();
    191
    192                    if (var10.canBeCollidedWith() && (var10 != var8 || this.ticksInAir >= 5))
    193                    {
    194                        float var11 = 0.3F;
    195                        AxisAlignedBB var12 = var10.boundingBox.expand((double)var11, (double)var11, (double)var11);
    196                        MovingObjectPosition var13 = var12.calculateIntercept(var16, var2);
    197
    198                        if (var13 != null)
    199                        {
    200                            double var14 = var16.distanceTo(var13.hitVec);
    201
    202                            if (var14 < var6 || var6 == 0.0D)
    203                            {
    204                                var4 = var10;
    205                                var6 = var14;
    206                            }
    207                        }
    208                    }
    209                }
    210
    211                if (var4 != null)
    212                {
    213                    var3 = new MovingObjectPosition(var4);
    214                }
    215            }
    216
    217            if (var3 != null)
    218            {
    219                if (var3.typeOfHit == EnumMovingObjectType.TILE && this.worldObj.getBlockId(var3.blockX, var3.blockY, var3.blockZ) == Block.portal.blockID)
    220                {
    221                    this.setInPortal();
    222                }
    223                else
    224                {
    225                    this.onImpact(var3);
    226                }
    227            }
    228
    229            this.posX += this.motionX;
    230            this.posY += this.motionY;
    231            this.posZ += this.motionZ;
    232            float var17 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
    233            this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
    234
    235            for (this.rotationPitch = (float)(Math.atan2(this.motionY, (double)var17) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F)
    236            {
    237                ;
    238            }
    239
    240            while (this.rotationPitch - this.prevRotationPitch >= 180.0F)
    241            {
    242                this.prevRotationPitch += 360.0F;
    243            }
    244
    245            while (this.rotationYaw - this.prevRotationYaw < -180.0F)
    246            {
    247                this.prevRotationYaw -= 360.0F;
    248            }
    249
    250            while (this.rotationYaw - this.prevRotationYaw >= 180.0F)
    251            {
    252                this.prevRotationYaw += 360.0F;
    253            }
    254
    255            this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
    256            this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
    257            float var18 = 0.99F;
    258            float var19 = this.getGravityVelocity();
    259
    260            if (this.isInWater())
    261            {
    262                for (int var7 = 0; var7 < 4; ++var7)
    263                {
    264                    float var20 = 0.25F;
    265                    this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)var20, this.posY - this.motionY * (double)var20, this.posZ - this.motionZ * (double)var20, this.motionX, this.motionY, this.motionZ);
    266                }
    267
    268                var18 = 0.8F;
    269            }
    270
    271            this.motionX *= (double)var18;
    272            this.motionY *= (double)var18;
    273            this.motionZ *= (double)var18;
    274            this.motionY -= (double)var19;
    275            this.setPosition(this.posX, this.posY, this.posZ);
    276        }
    277
    278        /**
    279         * Gets the amount of gravity to apply to the thrown entity with each tick.
    280         */
    281        protected float getGravityVelocity()
    282        {
    283            return 0.03F;
    284        }
    285
    286        /**
    287         * Called when this EntityThrowable hits a block or entity.
    288         */
    289        protected abstract void onImpact(MovingObjectPosition var1);
    290
    291        /**
    292         * (abstract) Protected helper method to write subclass entity data to NBT.
    293         */
    294        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    295        {
    296            par1NBTTagCompound.setShort("xTile", (short)this.xTile);
    297            par1NBTTagCompound.setShort("yTile", (short)this.yTile);
    298            par1NBTTagCompound.setShort("zTile", (short)this.zTile);
    299            par1NBTTagCompound.setByte("inTile", (byte)this.inTile);
    300            par1NBTTagCompound.setByte("shake", (byte)this.throwableShake);
    301            par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0));
    302
    303            if ((this.field_85053_h == null || this.field_85053_h.length() == 0) && this.thrower != null && this.thrower instanceof EntityPlayer)
    304            {
    305                this.field_85053_h = this.thrower.getEntityName();
    306            }
    307
    308            par1NBTTagCompound.setString("ownerName", this.field_85053_h == null ? "" : this.field_85053_h);
    309        }
    310
    311        /**
    312         * (abstract) Protected helper method to read subclass entity data from NBT.
    313         */
    314        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    315        {
    316            this.xTile = par1NBTTagCompound.getShort("xTile");
    317            this.yTile = par1NBTTagCompound.getShort("yTile");
    318            this.zTile = par1NBTTagCompound.getShort("zTile");
    319            this.inTile = par1NBTTagCompound.getByte("inTile") & 255;
    320            this.throwableShake = par1NBTTagCompound.getByte("shake") & 255;
    321            this.inGround = par1NBTTagCompound.getByte("inGround") == 1;
    322            this.field_85053_h = par1NBTTagCompound.getString("ownerName");
    323
    324            if (this.field_85053_h != null && this.field_85053_h.length() == 0)
    325            {
    326                this.field_85053_h = null;
    327            }
    328        }
    329
    330        @SideOnly(Side.CLIENT)
    331        public float getShadowSize()
    332        {
    333            return 0.0F;
    334        }
    335
    336        public EntityLiving func_85052_h()
    337        {
    338            if (this.thrower == null && this.field_85053_h != null && this.field_85053_h.length() > 0)
    339            {
    340                this.thrower = this.worldObj.getPlayerEntityByName(this.field_85053_h);
    341            }
    342
    343            return this.thrower;
    344        }
    345    }