    001    package net.minecraft.src;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005
    006    public class EntityXPOrb extends Entity
    007    {
    008        /**
    009         * A constantly increasing value that RenderXPOrb uses to control the colour shifting (Green / yellow)
    010         */
    011        public int xpColor;
    012
    013        /** The age of the XP orb in ticks. */
    014        public int xpOrbAge = 0;
    015        public int field_70532_c;
    016
    017        /** The health of this XP orb. */
    018        private int xpOrbHealth = 5;
    019
    020        /** This is how much XP this orb has. */
    021        private int xpValue;
    022
    023        /** The closest EntityPlayer to this orb. */
    024        private EntityPlayer closestPlayer;
    025        private int field_80002_g;
    026
    027        public EntityXPOrb(World par1World, double par2, double par4, double par6, int par8)
    028        {
    029            super(par1World);
    030            this.setSize(0.5F, 0.5F);
    031            this.yOffset = this.height / 2.0F;
    032            this.setPosition(par2, par4, par6);
    033            this.rotationYaw = (float)(Math.random() * 360.0D);
    034            this.motionX = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D) * 2.0F);
    035            this.motionY = (double)((float)(Math.random() * 0.2D) * 2.0F);
    036            this.motionZ = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D) * 2.0F);
    037            this.xpValue = par8;
    038        }
    039
    040        /**
    041         * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
    042         * prevent them from trampling crops
    043         */
    044        protected boolean canTriggerWalking()
    045        {
    046            return false;
    047        }
    048
    049        public EntityXPOrb(World par1World)
    050        {
    051            super(par1World);
    052            this.setSize(0.25F, 0.25F);
    053            this.yOffset = this.height / 2.0F;
    054        }
    055
    056        protected void entityInit() {}
    057
    058        @SideOnly(Side.CLIENT)
    059        public int getBrightnessForRender(float par1)
    060        {
    061            float var2 = 0.5F;
    062
    063            if (var2 < 0.0F)
    064            {
    065                var2 = 0.0F;
    066            }
    067
    068            if (var2 > 1.0F)
    069            {
    070                var2 = 1.0F;
    071            }
    072
    073            int var3 = super.getBrightnessForRender(par1);
    074            int var4 = var3 & 255;
    075            int var5 = var3 >> 16 & 255;
    076            var4 += (int)(var2 * 15.0F * 16.0F);
    077
    078            if (var4 > 240)
    079            {
    080                var4 = 240;
    081            }
    082
    083            return var4 | var5 << 16;
    084        }
    085
    086        /**
    087         * Called to update the entity's position/logic.
    088         */
    089        public void onUpdate()
    090        {
    091            super.onUpdate();
    092
    093            if (this.field_70532_c > 0)
    094            {
    095                --this.field_70532_c;
    096            }
    097
    098            this.prevPosX = this.posX;
    099            this.prevPosY = this.posY;
    100            this.prevPosZ = this.posZ;
    101            this.motionY -= 0.029999999329447746D;
    102
    103            if (this.worldObj.getBlockMaterial(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.posY), MathHelper.floor_double(this.posZ)) == Material.lava)
    104            {
    105                this.motionY = 0.20000000298023224D;
    106                this.motionX = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
    107                this.motionZ = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
    108                this.worldObj.playSoundAtEntity(this, "random.fizz", 0.4F, 2.0F + this.rand.nextFloat() * 0.4F);
    109            }
    110
    111            this.pushOutOfBlocks(this.posX, (this.boundingBox.minY + this.boundingBox.maxY) / 2.0D, this.posZ);
    112            double var1 = 8.0D;
    113
    114            if (this.field_80002_g < this.xpColor - 20 + this.entityId % 100)
    115            {
    116                if (this.closestPlayer == null || this.closestPlayer.getDistanceSqToEntity(this) > var1 * var1)
    117                {
    118                    this.closestPlayer = this.worldObj.getClosestPlayerToEntity(this, var1);
    119                }
    120
    121                this.field_80002_g = this.xpColor;
    122            }
    123
    124            if (this.closestPlayer != null)
    125            {
    126                double var3 = (this.closestPlayer.posX - this.posX) / var1;
    127                double var5 = (this.closestPlayer.posY + (double)this.closestPlayer.getEyeHeight() - this.posY) / var1;
    128                double var7 = (this.closestPlayer.posZ - this.posZ) / var1;
    129                double var9 = Math.sqrt(var3 * var3 + var5 * var5 + var7 * var7);
    130                double var11 = 1.0D - var9;
    131
    132                if (var11 > 0.0D)
    133                {
    134                    var11 *= var11;
    135                    this.motionX += var3 / var9 * var11 * 0.1D;
    136                    this.motionY += var5 / var9 * var11 * 0.1D;
    137                    this.motionZ += var7 / var9 * var11 * 0.1D;
    138                }
    139            }
    140
    141            this.moveEntity(this.motionX, this.motionY, this.motionZ);
    142            float var13 = 0.98F;
    143
    144            if (this.onGround)
    145            {
    146                var13 = 0.58800006F;
    147                int var4 = this.worldObj.getBlockId(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.boundingBox.minY) - 1, MathHelper.floor_double(this.posZ));
    148
    149                if (var4 > 0)
    150                {
    151                    var13 = Block.blocksList[var4].slipperiness * 0.98F;
    152                }
    153            }
    154
    155            this.motionX *= (double)var13;
    156            this.motionY *= 0.9800000190734863D;
    157            this.motionZ *= (double)var13;
    158
    159            if (this.onGround)
    160            {
    161                this.motionY *= -0.8999999761581421D;
    162            }
    163
    164            ++this.xpColor;
    165            ++this.xpOrbAge;
    166
    167            if (this.xpOrbAge >= 6000)
    168            {
    169                this.setDead();
    170            }
    171        }
    172
    173        /**
    174         * Returns if this entity is in water and will end up adding the waters velocity to the entity
    175         */
    176        public boolean handleWaterMovement()
    177        {
    178            return this.worldObj.handleMaterialAcceleration(this.boundingBox, Material.water, this);
    179        }
    180
    181        /**
    182         * Will deal the specified amount of damage to the entity if the entity isn't immune to fire damage. Args:
    183         * amountDamage
    184         */
    185        protected void dealFireDamage(int par1)
    186        {
    187            this.attackEntityFrom(DamageSource.inFire, par1);
    188        }
    189
    190        /**
    191         * Called when the entity is attacked.
    192         */
    193        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
    194        {
    195            this.setBeenAttacked();
    196            this.xpOrbHealth -= par2;
    197
    198            if (this.xpOrbHealth <= 0)
    199            {
    200                this.setDead();
    201            }
    202
    203            return false;
    204        }
    205
    206        /**
    207         * (abstract) Protected helper method to write subclass entity data to NBT.
    208         */
    209        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    210        {
    211            par1NBTTagCompound.setShort("Health", (short)((byte)this.xpOrbHealth));
    212            par1NBTTagCompound.setShort("Age", (short)this.xpOrbAge);
    213            par1NBTTagCompound.setShort("Value", (short)this.xpValue);
    214        }
    215
    216        /**
    217         * (abstract) Protected helper method to read subclass entity data from NBT.
    218         */
    219        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    220        {
    221            this.xpOrbHealth = par1NBTTagCompound.getShort("Health") & 255;
    222            this.xpOrbAge = par1NBTTagCompound.getShort("Age");
    223            this.xpValue = par1NBTTagCompound.getShort("Value");
    224        }
    225
    226        /**
    227         * Called by a player entity when they collide with an entity
    228         */
    229        public void onCollideWithPlayer(EntityPlayer par1EntityPlayer)
    230        {
    231            if (!this.worldObj.isRemote)
    232            {
    233                if (this.field_70532_c == 0 && par1EntityPlayer.xpCooldown == 0)
    234                {
    235                    par1EntityPlayer.xpCooldown = 2;
    236                    this.worldObj.playSoundAtEntity(this, "random.orb", 0.1F, 0.5F * ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.8F));
    237                    par1EntityPlayer.onItemPickup(this, 1);
    238                    par1EntityPlayer.addExperience(this.xpValue);
    239                    this.setDead();
    240                }
    241            }
    242        }
    243
    244        /**
    245         * Returns the XP value of this XP orb.
    246         */
    247        public int getXpValue()
    248        {
    249            return this.xpValue;
    250        }
    251
    252        @SideOnly(Side.CLIENT)
    253
    254        /**
    255         * Returns a number from 1 to 10 based on how much XP this orb is worth. This is used by RenderXPOrb to determine
    256         * what texture to use.
    257         */
    258        public int getTextureByXP()
    259        {
    260            return this.xpValue >= 2477 ? 10 : (this.xpValue >= 1237 ? 9 : (this.xpValue >= 617 ? 8 : (this.xpValue >= 307 ? 7 : (this.xpValue >= 149 ? 6 : (this.xpValue >= 73 ? 5 : (this.xpValue >= 37 ? 4 : (this.xpValue >= 17 ? 3 : (this.xpValue >= 7 ? 2 : (this.xpValue >= 3 ? 1 : 0)))))))));
    261        }
    262
    263        /**
    264         * Get xp split rate (Is called until the xp drop code in EntityLiving.onEntityUpdate is complete)
    265         */
    266        public static int getXPSplit(int par0)
    267        {
    268            return par0 >= 2477 ? 2477 : (par0 >= 1237 ? 1237 : (par0 >= 617 ? 617 : (par0 >= 307 ? 307 : (par0 >= 149 ? 149 : (par0 >= 73 ? 73 : (par0 >= 37 ? 37 : (par0 >= 17 ? 17 : (par0 >= 7 ? 7 : (par0 >= 3 ? 3 : 1)))))))));
    269        }
    270
    271        /**
    272         * If returns false, the item will not inflict any damage against entities.
    273         */
    274        public boolean canAttackWithItem()
    275        {
    276            return false;
    277        }
    278    }