001package net.minecraft.client.particle;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import net.minecraft.client.renderer.Tessellator;
006import net.minecraft.entity.Entity;
007import net.minecraft.nbt.NBTTagCompound;
008import net.minecraft.util.MathHelper;
009import net.minecraft.world.World;
010
011@SideOnly(Side.CLIENT)
012public class EntityFX extends Entity
013{
014    private int particleTextureIndex;
015    protected float particleTextureJitterX;
016    protected float particleTextureJitterY;
017    protected int particleAge;
018    protected int particleMaxAge;
019    protected float particleScale;
020    protected float particleGravity;
021
022    /** The red amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0. */
023    protected float particleRed;
024
025    /**
026     * The green amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
027     */
028    protected float particleGreen;
029
030    /**
031     * The blue amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
032     */
033    protected float particleBlue;
034
035    /** Particle alpha */
036    protected float particleAlpha;
037    public static double interpPosX;
038    public static double interpPosY;
039    public static double interpPosZ;
040
041    protected EntityFX(World par1World, double par2, double par4, double par6)
042    {
043        super(par1World);
044        this.particleAge = 0;
045        this.particleMaxAge = 0;
046        this.particleAlpha = 1.0F;
047        this.setSize(0.2F, 0.2F);
048        this.yOffset = this.height / 2.0F;
049        this.setPosition(par2, par4, par6);
050        this.lastTickPosX = par2;
051        this.lastTickPosY = par4;
052        this.lastTickPosZ = par6;
053        this.particleRed = this.particleGreen = this.particleBlue = 1.0F;
054        this.particleTextureJitterX = this.rand.nextFloat() * 3.0F;
055        this.particleTextureJitterY = this.rand.nextFloat() * 3.0F;
056        this.particleScale = (this.rand.nextFloat() * 0.5F + 0.5F) * 2.0F;
057        this.particleMaxAge = (int)(4.0F / (this.rand.nextFloat() * 0.9F + 0.1F));
058        this.particleAge = 0;
059    }
060
061    public EntityFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
062    {
063        this(par1World, par2, par4, par6);
064        this.motionX = par8 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
065        this.motionY = par10 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
066        this.motionZ = par12 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
067        float var14 = (float)(Math.random() + Math.random() + 1.0D) * 0.15F;
068        float var15 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
069        this.motionX = this.motionX / (double)var15 * (double)var14 * 0.4000000059604645D;
070        this.motionY = this.motionY / (double)var15 * (double)var14 * 0.4000000059604645D + 0.10000000149011612D;
071        this.motionZ = this.motionZ / (double)var15 * (double)var14 * 0.4000000059604645D;
072    }
073
074    public EntityFX multiplyVelocity(float par1)
075    {
076        this.motionX *= (double)par1;
077        this.motionY = (this.motionY - 0.10000000149011612D) * (double)par1 + 0.10000000149011612D;
078        this.motionZ *= (double)par1;
079        return this;
080    }
081
082    public EntityFX multipleParticleScaleBy(float par1)
083    {
084        this.setSize(0.2F * par1, 0.2F * par1);
085        this.particleScale *= par1;
086        return this;
087    }
088
089    public void setRBGColorF(float par1, float par2, float par3)
090    {
091        this.particleRed = par1;
092        this.particleGreen = par2;
093        this.particleBlue = par3;
094    }
095
096    /**
097     * Sets the particle alpha (float)
098     */
099    public void setAlphaF(float par1)
100    {
101        this.particleAlpha = par1;
102    }
103
104    public float getRedColorF()
105    {
106        return this.particleRed;
107    }
108
109    public float getGreenColorF()
110    {
111        return this.particleGreen;
112    }
113
114    public float getBlueColorF()
115    {
116        return this.particleBlue;
117    }
118
119    /**
120     * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
121     * prevent them from trampling crops
122     */
123    protected boolean canTriggerWalking()
124    {
125        return false;
126    }
127
128    protected void entityInit() {}
129
130    /**
131     * Called to update the entity's position/logic.
132     */
133    public void onUpdate()
134    {
135        this.prevPosX = this.posX;
136        this.prevPosY = this.posY;
137        this.prevPosZ = this.posZ;
138
139        if (this.particleAge++ >= this.particleMaxAge)
140        {
141            this.setDead();
142        }
143
144        this.motionY -= 0.04D * (double)this.particleGravity;
145        this.moveEntity(this.motionX, this.motionY, this.motionZ);
146        this.motionX *= 0.9800000190734863D;
147        this.motionY *= 0.9800000190734863D;
148        this.motionZ *= 0.9800000190734863D;
149
150        if (this.onGround)
151        {
152            this.motionX *= 0.699999988079071D;
153            this.motionZ *= 0.699999988079071D;
154        }
155    }
156
157    public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
158    {
159        float var8 = (float)(this.particleTextureIndex % 16) / 16.0F;
160        float var9 = var8 + 0.0624375F;
161        float var10 = (float)(this.particleTextureIndex / 16) / 16.0F;
162        float var11 = var10 + 0.0624375F;
163        float var12 = 0.1F * this.particleScale;
164        float var13 = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)par2 - interpPosX);
165        float var14 = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)par2 - interpPosY);
166        float var15 = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)par2 - interpPosZ);
167        float var16 = 1.0F;
168        par1Tessellator.setColorRGBA_F(this.particleRed * var16, this.particleGreen * var16, this.particleBlue * var16, this.particleAlpha);
169        par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 - par5 * var12 - par7 * var12), (double)var9, (double)var11);
170        par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 - par5 * var12 + par7 * var12), (double)var9, (double)var10);
171        par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 + par5 * var12 + par7 * var12), (double)var8, (double)var10);
172        par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 + par5 * var12 - par7 * var12), (double)var8, (double)var11);
173    }
174
175    public int getFXLayer()
176    {
177        return 0;
178    }
179
180    /**
181     * (abstract) Protected helper method to write subclass entity data to NBT.
182     */
183    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) {}
184
185    /**
186     * (abstract) Protected helper method to read subclass entity data from NBT.
187     */
188    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) {}
189
190    /**
191     * Public method to set private field particleTextureIndex.
192     */
193    public void setParticleTextureIndex(int par1)
194    {
195        this.particleTextureIndex = par1;
196    }
197
198    public int getParticleTextureIndex()
199    {
200        return this.particleTextureIndex;
201    }
202
203    /**
204     * If returns false, the item will not inflict any damage against entities.
205     */
206    public boolean canAttackWithItem()
207    {
208        return false;
209    }
210
211    public String toString()
212    {
213        return this.getClass().getSimpleName() + ", Pos (" + this.posX + "," + this.posY + "," + this.posZ + "), RGBA (" + this.particleRed + "," + this.particleGreen + "," + this.particleBlue + "," + this.particleAlpha + "), Age " + this.particleAge;
214    }
215}