001package net.minecraft.client.particle;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import net.minecraft.client.renderer.RenderEngine;
006import net.minecraft.client.renderer.Tessellator;
007import net.minecraft.entity.Entity;
008import net.minecraft.nbt.NBTTagCompound;
009import net.minecraft.util.Icon;
010import net.minecraft.util.MathHelper;
011import net.minecraft.world.World;
012
013@SideOnly(Side.CLIENT)
014public class EntityFX extends Entity
015{
016    protected int particleTextureIndexX;
017    protected int particleTextureIndexY;
018    protected float particleTextureJitterX;
019    protected float particleTextureJitterY;
020    protected int particleAge;
021    protected int particleMaxAge;
022    protected float particleScale;
023    protected float particleGravity;
024
025    /** The red amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0. */
026    protected float particleRed;
027
028    /**
029     * The green amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
030     */
031    protected float particleGreen;
032
033    /**
034     * The blue amount of color. Used as a percentage, 1.0 = 255 and 0.0 = 0.
035     */
036    protected float particleBlue;
037
038    /** Particle alpha */
039    protected float particleAlpha;
040    protected Icon particleTextureIndex;
041    public static double interpPosX;
042    public static double interpPosY;
043    public static double interpPosZ;
044
045    protected EntityFX(World par1World, double par2, double par4, double par6)
046    {
047        super(par1World);
048        this.particleAge = 0;
049        this.particleMaxAge = 0;
050        this.particleAlpha = 1.0F;
051        this.particleTextureIndex = null;
052        this.setSize(0.2F, 0.2F);
053        this.yOffset = this.height / 2.0F;
054        this.setPosition(par2, par4, par6);
055        this.lastTickPosX = par2;
056        this.lastTickPosY = par4;
057        this.lastTickPosZ = par6;
058        this.particleRed = this.particleGreen = this.particleBlue = 1.0F;
059        this.particleTextureJitterX = this.rand.nextFloat() * 3.0F;
060        this.particleTextureJitterY = this.rand.nextFloat() * 3.0F;
061        this.particleScale = (this.rand.nextFloat() * 0.5F + 0.5F) * 2.0F;
062        this.particleMaxAge = (int)(4.0F / (this.rand.nextFloat() * 0.9F + 0.1F));
063        this.particleAge = 0;
064    }
065
066    public EntityFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
067    {
068        this(par1World, par2, par4, par6);
069        this.motionX = par8 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
070        this.motionY = par10 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
071        this.motionZ = par12 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.4F);
072        float f = (float)(Math.random() + Math.random() + 1.0D) * 0.15F;
073        float f1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
074        this.motionX = this.motionX / (double)f1 * (double)f * 0.4000000059604645D;
075        this.motionY = this.motionY / (double)f1 * (double)f * 0.4000000059604645D + 0.10000000149011612D;
076        this.motionZ = this.motionZ / (double)f1 * (double)f * 0.4000000059604645D;
077    }
078
079    public EntityFX multiplyVelocity(float par1)
080    {
081        this.motionX *= (double)par1;
082        this.motionY = (this.motionY - 0.10000000149011612D) * (double)par1 + 0.10000000149011612D;
083        this.motionZ *= (double)par1;
084        return this;
085    }
086
087    public EntityFX multipleParticleScaleBy(float par1)
088    {
089        this.setSize(0.2F * par1, 0.2F * par1);
090        this.particleScale *= par1;
091        return this;
092    }
093
094    public void setRBGColorF(float par1, float par2, float par3)
095    {
096        this.particleRed = par1;
097        this.particleGreen = par2;
098        this.particleBlue = par3;
099    }
100
101    /**
102     * Sets the particle alpha (float)
103     */
104    public void setAlphaF(float par1)
105    {
106        this.particleAlpha = par1;
107    }
108
109    public float getRedColorF()
110    {
111        return this.particleRed;
112    }
113
114    public float getGreenColorF()
115    {
116        return this.particleGreen;
117    }
118
119    public float getBlueColorF()
120    {
121        return this.particleBlue;
122    }
123
124    /**
125     * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
126     * prevent them from trampling crops
127     */
128    protected boolean canTriggerWalking()
129    {
130        return false;
131    }
132
133    protected void entityInit() {}
134
135    /**
136     * Called to update the entity's position/logic.
137     */
138    public void onUpdate()
139    {
140        this.prevPosX = this.posX;
141        this.prevPosY = this.posY;
142        this.prevPosZ = this.posZ;
143
144        if (this.particleAge++ >= this.particleMaxAge)
145        {
146            this.setDead();
147        }
148
149        this.motionY -= 0.04D * (double)this.particleGravity;
150        this.moveEntity(this.motionX, this.motionY, this.motionZ);
151        this.motionX *= 0.9800000190734863D;
152        this.motionY *= 0.9800000190734863D;
153        this.motionZ *= 0.9800000190734863D;
154
155        if (this.onGround)
156        {
157            this.motionX *= 0.699999988079071D;
158            this.motionZ *= 0.699999988079071D;
159        }
160    }
161
162    public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
163    {
164        float f6 = (float)this.particleTextureIndexX / 16.0F;
165        float f7 = f6 + 0.0624375F;
166        float f8 = (float)this.particleTextureIndexY / 16.0F;
167        float f9 = f8 + 0.0624375F;
168        float f10 = 0.1F * this.particleScale;
169
170        if (this.particleTextureIndex != null)
171        {
172            f6 = this.particleTextureIndex.getMinU();
173            f7 = this.particleTextureIndex.getMaxU();
174            f8 = this.particleTextureIndex.getMinV();
175            f9 = this.particleTextureIndex.getMaxV();
176        }
177
178        float f11 = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)par2 - interpPosX);
179        float f12 = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)par2 - interpPosY);
180        float f13 = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)par2 - interpPosZ);
181        float f14 = 1.0F;
182        par1Tessellator.setColorRGBA_F(this.particleRed * f14, this.particleGreen * f14, this.particleBlue * f14, this.particleAlpha);
183        par1Tessellator.addVertexWithUV((double)(f11 - par3 * f10 - par6 * f10), (double)(f12 - par4 * f10), (double)(f13 - par5 * f10 - par7 * f10), (double)f7, (double)f9);
184        par1Tessellator.addVertexWithUV((double)(f11 - par3 * f10 + par6 * f10), (double)(f12 + par4 * f10), (double)(f13 - par5 * f10 + par7 * f10), (double)f7, (double)f8);
185        par1Tessellator.addVertexWithUV((double)(f11 + par3 * f10 + par6 * f10), (double)(f12 + par4 * f10), (double)(f13 + par5 * f10 + par7 * f10), (double)f6, (double)f8);
186        par1Tessellator.addVertexWithUV((double)(f11 + par3 * f10 - par6 * f10), (double)(f12 - par4 * f10), (double)(f13 + par5 * f10 - par7 * f10), (double)f6, (double)f9);
187    }
188
189    public int getFXLayer()
190    {
191        return 0;
192    }
193
194    /**
195     * (abstract) Protected helper method to write subclass entity data to NBT.
196     */
197    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) {}
198
199    /**
200     * (abstract) Protected helper method to read subclass entity data from NBT.
201     */
202    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) {}
203
204    public void setParticleIcon(RenderEngine par1RenderEngine, Icon par2Icon)
205    {
206        if (this.getFXLayer() == 1)
207        {
208            this.particleTextureIndex = par2Icon;
209        }
210        else
211        {
212            if (this.getFXLayer() != 2)
213            {
214                throw new RuntimeException("Invalid call to Particle.setTex, use coordinate methods");
215            }
216
217            this.particleTextureIndex = par2Icon;
218        }
219    }
220
221    /**
222     * Public method to set private field particleTextureIndex.
223     */
224    public void setParticleTextureIndex(int par1)
225    {
226        if (this.getFXLayer() != 0)
227        {
228            throw new RuntimeException("Invalid call to Particle.setMiscTex");
229        }
230        else
231        {
232            this.particleTextureIndexX = par1 % 16;
233            this.particleTextureIndexY = par1 / 16;
234        }
235    }
236
237    public void nextTextureIndexX()
238    {
239        ++this.particleTextureIndexX;
240    }
241
242    /**
243     * If returns false, the item will not inflict any damage against entities.
244     */
245    public boolean canAttackWithItem()
246    {
247        return false;
248    }
249
250    public String toString()
251    {
252        return this.getClass().getSimpleName() + ", Pos (" + this.posX + "," + this.posY + "," + this.posZ + "), RGBA (" + this.particleRed + "," + this.particleGreen + "," + this.particleBlue + "," + this.particleAlpha + "), Age " + this.particleAge;
253    }
254}