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 }