    001    package net.minecraft.src;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005
    006    @SideOnly(Side.CLIENT)
    007    public class EntityFX extends Entity
    008    {
    009        private int particleTextureIndex;
    010        protected float particleTextureJitterX;
    011        protected float particleTextureJitterY;
    012        protected int particleAge = 0;
    013        protected int particleMaxAge = 0;
    014        protected float particleScale;
    015        protected float particleGravity;
    016
    017        /** The red amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0. */
    018        protected float particleRed;
    019
    020        /**
    021         * The green amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
    022         */
    023        protected float particleGreen;
    024
    025        /**
    026         * The blue amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
    027         */
    028        protected float particleBlue;
    029        protected float field_82339_as = 1.0F;
    030        public static double interpPosX;
    031        public static double interpPosY;
    032        public static double interpPosZ;
    033
    034        public EntityFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
    035        {
    036            super(par1World);
    037            this.setSize(0.2F, 0.2F);
    038            this.yOffset = this.height / 2.0F;
    039            this.setPosition(par2, par4, par6);
    040            this.particleRed = this.particleGreen = this.particleBlue = 1.0F;
    041            this.motionX = par8 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
    042            this.motionY = par10 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
    043            this.motionZ = par12 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
    044            float var14 = (float)(Math.random() + Math.random() + 1.0D) * 0.15F;
    045            float var15 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
    046            this.motionX = this.motionX / (double)var15 * (double)var14 * 0.4000000059604645D;
    047            this.motionY = this.motionY / (double)var15 * (double)var14 * 0.4000000059604645D + 0.10000000149011612D;
    048            this.motionZ = this.motionZ / (double)var15 * (double)var14 * 0.4000000059604645D;
    049            this.particleTextureJitterX = this.rand.nextFloat() * 3.0F;
    050            this.particleTextureJitterY = this.rand.nextFloat() * 3.0F;
    051            this.particleScale = (this.rand.nextFloat() * 0.5F + 0.5F) * 2.0F;
    052            this.particleMaxAge = (int)(4.0F / (this.rand.nextFloat() * 0.9F + 0.1F));
    053            this.particleAge = 0;
    054        }
    055
    056        public EntityFX multiplyVelocity(float par1)
    057        {
    058            this.motionX *= (double)par1;
    059            this.motionY = (this.motionY - 0.10000000149011612D) * (double)par1 + 0.10000000149011612D;
    060            this.motionZ *= (double)par1;
    061            return this;
    062        }
    063
    064        public EntityFX multipleParticleScaleBy(float par1)
    065        {
    066            this.setSize(0.2F * par1, 0.2F * par1);
    067            this.particleScale *= par1;
    068            return this;
    069        }
    070
    071        public void setRBGColorF(float par1, float par2, float par3)
    072        {
    073            this.particleRed = par1;
    074            this.particleGreen = par2;
    075            this.particleBlue = par3;
    076        }
    077
    078        public void func_82338_g(float par1)
    079        {
    080            this.field_82339_as = par1;
    081        }
    082
    083        public float getRedColorF()
    084        {
    085            return this.particleRed;
    086        }
    087
    088        public float getGreenColorF()
    089        {
    090            return this.particleGreen;
    091        }
    092
    093        public float getBlueColorF()
    094        {
    095            return this.particleBlue;
    096        }
    097
    098        /**
    099         * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
    100         * prevent them from trampling crops
    101         */
    102        protected boolean canTriggerWalking()
    103        {
    104            return false;
    105        }
    106
    107        protected void entityInit() {}
    108
    109        /**
    110         * Called to update the entity's position/logic.
    111         */
    112        public void onUpdate()
    113        {
    114            this.prevPosX = this.posX;
    115            this.prevPosY = this.posY;
    116            this.prevPosZ = this.posZ;
    117
    118            if (this.particleAge++ >= this.particleMaxAge)
    119            {
    120                this.setDead();
    121            }
    122
    123            this.motionY -= 0.04D * (double)this.particleGravity;
    124            this.moveEntity(this.motionX, this.motionY, this.motionZ);
    125            this.motionX *= 0.9800000190734863D;
    126            this.motionY *= 0.9800000190734863D;
    127            this.motionZ *= 0.9800000190734863D;
    128
    129            if (this.onGround)
    130            {
    131                this.motionX *= 0.699999988079071D;
    132                this.motionZ *= 0.699999988079071D;
    133            }
    134        }
    135
    136        public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
    137        {
    138            float var8 = (float)(this.particleTextureIndex % 16) / 16.0F;
    139            float var9 = var8 + 0.0624375F;
    140            float var10 = (float)(this.particleTextureIndex / 16) / 16.0F;
    141            float var11 = var10 + 0.0624375F;
    142            float var12 = 0.1F * this.particleScale;
    143            float var13 = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)par2 - interpPosX);
    144            float var14 = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)par2 - interpPosY);
    145            float var15 = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)par2 - interpPosZ);
    146            float var16 = 1.0F;
    147            par1Tessellator.setColorRGBA_F(this.particleRed * var16, this.particleGreen * var16, this.particleBlue * var16, this.field_82339_as);
    148            par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 - par5 * var12 - par7 * var12), (double)var9, (double)var11);
    149            par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 - par5 * var12 + par7 * var12), (double)var9, (double)var10);
    150            par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 + par5 * var12 + par7 * var12), (double)var8, (double)var10);
    151            par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 + par5 * var12 - par7 * var12), (double)var8, (double)var11);
    152        }
    153
    154        public int getFXLayer()
    155        {
    156            return 0;
    157        }
    158
    159        /**
    160         * (abstract) Protected helper method to write subclass entity data to NBT.
    161         */
    162        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) {}
    163
    164        /**
    165         * (abstract) Protected helper method to read subclass entity data from NBT.
    166         */
    167        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) {}
    168
    169        /**
    170         * Public method to set private field particleTextureIndex.
    171         */
    172        public void setParticleTextureIndex(int par1)
    173        {
    174            this.particleTextureIndex = par1;
    175        }
    176
    177        public int getParticleTextureIndex()
    178        {
    179            return this.particleTextureIndex;
    180        }
    181
    182        /**
    183         * If returns false, the item will not inflict any damage against entities.
    184         */
    185        public boolean canAttackWithItem()
    186        {
    187            return false;
    188        }
    189    }