    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
    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        protected EntityLiving thrower;
    021        private int ticksInGround;
    022        private int ticksInAir = 0;
    023
    024        public EntityThrowable(World par1World)
    025        {
    026            super(par1World);
    027            this.setSize(0.25F, 0.25F);
    028        }
    029
    030        protected void entityInit() {}
    031
    032        @SideOnly(Side.CLIENT)
    033
    034        /**
    035         * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge
    036         * length * 64 * renderDistanceWeight Args: distance
    037         */
    038        public boolean isInRangeToRenderDist(double par1)
    039        {
    040            double var3 = this.boundingBox.getAverageEdgeLength() * 4.0D;
    041            var3 *= 64.0D;
    042            return par1 < var3 * var3;
    043        }
    044
    045        public EntityThrowable(World par1World, EntityLiving par2EntityLiving)
    046        {
    047            super(par1World);
    048            this.thrower = par2EntityLiving;
    049            this.setSize(0.25F, 0.25F);
    050            this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight(), par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch);
    051            this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    052            this.posY -= 0.10000000149011612D;
    053            this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    054            this.setPosition(this.posX, this.posY, this.posZ);
    055            this.yOffset = 0.0F;
    056            float var3 = 0.4F;
    057            this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
    058            this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
    059            this.motionY = (double)(-MathHelper.sin((this.rotationPitch + this.func_70183_g()) / 180.0F * (float)Math.PI) * var3);
    060            this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, this.func_70182_d(), 1.0F);
    061        }
    062
    063        public EntityThrowable(World par1World, double par2, double par4, double par6)
    064        {
    065            super(par1World);
    066            this.ticksInGround = 0;
    067            this.setSize(0.25F, 0.25F);
    068            this.setPosition(par2, par4, par6);
    069            this.yOffset = 0.0F;
    070        }
    071
    072        protected float func_70182_d()
    073        {
    074            return 1.5F;
    075        }
    076
    077        protected float func_70183_g()
    078        {
    079            return 0.0F;
    080        }
    081
    082        /**
    083         * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
    084         */
    085        public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8)
    086        {
    087            float var9 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5);
    088            par1 /= (double)var9;
    089            par3 /= (double)var9;
    090            par5 /= (double)var9;
    091            par1 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    092            par3 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    093            par5 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
    094            par1 *= (double)par7;
    095            par3 *= (double)par7;
    096            par5 *= (double)par7;
    097            this.motionX = par1;
    098            this.motionY = par3;
    099            this.motionZ = par5;
    100            float var10 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    101            this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    102            this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var10) * 180.0D / Math.PI);
    103            this.ticksInGround = 0;
    104        }
    105
    106        @SideOnly(Side.CLIENT)
    107
    108        /**
    109         * Sets the velocity to the args. Args: x, y, z
    110         */
    111        public void setVelocity(double par1, double par3, double par5)
    112        {
    113            this.motionX = par1;
    114            this.motionY = par3;
    115            this.motionZ = par5;
    116
    117            if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
    118            {
    119                float var7 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    120                this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    121                this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var7) * 180.0D / Math.PI);
    122            }
    123        }
    124
    125        /**
    126         * Called to update the entity's position/logic.
    127         */
    128        public void onUpdate()
    129        {
    130            this.lastTickPosX = this.posX;
    131            this.lastTickPosY = this.posY;
    132            this.lastTickPosZ = this.posZ;
    133            super.onUpdate();
    134
    135            if (this.throwableShake > 0)
    136            {
    137                --this.throwableShake;
    138            }
    139
    140            if (this.inGround)
    141            {
    142                int var1 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
    143
    144                if (var1 == this.inTile)
    145                {
    146                    ++this.ticksInGround;
    147
    148                    if (this.ticksInGround == 1200)
    149                    {
    150                        this.setDead();
    151                    }
    152
    153                    return;
    154                }
    155
    156                this.inGround = false;
    157                this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
    158                this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
    159                this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
    160                this.ticksInGround = 0;
    161                this.ticksInAir = 0;
    162            }
    163            else
    164            {
    165                ++this.ticksInAir;
    166            }
    167
    168            Vec3 var15 = Vec3.getVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    169            Vec3 var2 = Vec3.getVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    170            MovingObjectPosition var3 = this.worldObj.rayTraceBlocks(var15, var2);
    171            var15 = Vec3.getVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    172            var2 = Vec3.getVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    173
    174            if (var3 != null)
    175            {
    176                var2 = Vec3.getVec3Pool().getVecFromPool(var3.hitVec.xCoord, var3.hitVec.yCoord, var3.hitVec.zCoord);
    177            }
    178
    179            if (!this.worldObj.isRemote)
    180            {
    181                Entity var4 = null;
    182                List var5 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
    183                double var6 = 0.0D;
    184                Iterator var8 = var5.iterator();
    185
    186                while (var8.hasNext())
    187                {
    188                    Entity var9 = (Entity)var8.next();
    189
    190                    if (var9.canBeCollidedWith() && (var9 != this.thrower || this.ticksInAir >= 5))
    191                    {
    192                        float var10 = 0.3F;
    193                        AxisAlignedBB var11 = var9.boundingBox.expand((double)var10, (double)var10, (double)var10);
    194                        MovingObjectPosition var12 = var11.calculateIntercept(var15, var2);
    195
    196                        if (var12 != null)
    197                        {
    198                            double var13 = var15.distanceTo(var12.hitVec);
    199
    200                            if (var13 < var6 || var6 == 0.0D)
    201                            {
    202                                var4 = var9;
    203                                var6 = var13;
    204                            }
    205                        }
    206                    }
    207                }
    208
    209                if (var4 != null)
    210                {
    211                    var3 = new MovingObjectPosition(var4);
    212                }
    213            }
    214
    215            if (var3 != null)
    216            {
    217                this.onImpact(var3);
    218            }
    219
    220            this.posX += this.motionX;
    221            this.posY += this.motionY;
    222            this.posZ += this.motionZ;
    223            float var16 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
    224            this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
    225
    226            for (this.rotationPitch = (float)(Math.atan2(this.motionY, (double)var16) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F)
    227            {
    228                ;
    229            }
    230
    231            while (this.rotationPitch - this.prevRotationPitch >= 180.0F)
    232            {
    233                this.prevRotationPitch += 360.0F;
    234            }
    235
    236            while (this.rotationYaw - this.prevRotationYaw < -180.0F)
    237            {
    238                this.prevRotationYaw -= 360.0F;
    239            }
    240
    241            while (this.rotationYaw - this.prevRotationYaw >= 180.0F)
    242            {
    243                this.prevRotationYaw += 360.0F;
    244            }
    245
    246            this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
    247            this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
    248            float var17 = 0.99F;
    249            float var18 = this.getGravityVelocity();
    250
    251            if (this.isInWater())
    252            {
    253                for (int var7 = 0; var7 < 4; ++var7)
    254                {
    255                    float var19 = 0.25F;
    256                    this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)var19, this.posY - this.motionY * (double)var19, this.posZ - this.motionZ * (double)var19, this.motionX, this.motionY, this.motionZ);
    257                }
    258
    259                var17 = 0.8F;
    260            }
    261
    262            this.motionX *= (double)var17;
    263            this.motionY *= (double)var17;
    264            this.motionZ *= (double)var17;
    265            this.motionY -= (double)var18;
    266            this.setPosition(this.posX, this.posY, this.posZ);
    267        }
    268
    269        /**
    270         * Gets the amount of gravity to apply to the thrown entity with each tick.
    271         */
    272        protected float getGravityVelocity()
    273        {
    274            return 0.03F;
    275        }
    276
    277        /**
    278         * Called when this EntityThrowable hits a block or entity.
    279         */
    280        protected abstract void onImpact(MovingObjectPosition var1);
    281
    282        /**
    283         * (abstract) Protected helper method to write subclass entity data to NBT.
    284         */
    285        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    286        {
    287            par1NBTTagCompound.setShort("xTile", (short)this.xTile);
    288            par1NBTTagCompound.setShort("yTile", (short)this.yTile);
    289            par1NBTTagCompound.setShort("zTile", (short)this.zTile);
    290            par1NBTTagCompound.setByte("inTile", (byte)this.inTile);
    291            par1NBTTagCompound.setByte("shake", (byte)this.throwableShake);
    292            par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0));
    293        }
    294
    295        /**
    296         * (abstract) Protected helper method to read subclass entity data from NBT.
    297         */
    298        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    299        {
    300            this.xTile = par1NBTTagCompound.getShort("xTile");
    301            this.yTile = par1NBTTagCompound.getShort("yTile");
    302            this.zTile = par1NBTTagCompound.getShort("zTile");
    303            this.inTile = par1NBTTagCompound.getByte("inTile") & 255;
    304            this.throwableShake = par1NBTTagCompound.getByte("shake") & 255;
    305            this.inGround = par1NBTTagCompound.getByte("inGround") == 1;
    306        }
    307
    308        @SideOnly(Side.CLIENT)
    309        public float getShadowSize()
    310        {
    311            return 0.0F;
    312        }
    313    }