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package ihl.explosion;
import java.util.Random;
import ihl.utils.IHLMathUtils;
import net.minecraft.client.particle.EntityFX;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.world.World;
public class ExplosionEntityFX extends EntityFX {
private float radius;
private static final Random random = new Random();
private final int[] particlesMaxAge;
private final int[] particlesTextureIndexX;
private final int[] particlesTextureIndexY;
private final double[][] startPos;
private final double[][] pos;
private final double[][] prevPos;
private final float[][] motion;
private final int[] center;
public ExplosionEntityFX(World world, double x, double y, double z)
{
super(world, x, y, z);
this.renderDistanceWeight = 5.0D;
int numParticles = 1;
particlesMaxAge = new int[numParticles];
particlesTextureIndexX = new int[numParticles];
particlesTextureIndexY= new int[numParticles];
startPos = new double[numParticles][3];
pos = new double[numParticles][3];
prevPos = new double[numParticles][3];
motion = new float[numParticles][3];
center = new int[3];
}
public ExplosionEntityFX(World par1World, int centerX1, int centerY1, int centerZ1, float radius1)
{
super(par1World, centerX1, centerY1, centerZ1, 0.0D, 0.0D, 0.0D);
this.particleMaxAge = 100;
this.center = new int[3];
this.lastTickPosX=this.posX=this.prevPosX=this.center[0]=centerX1;
this.lastTickPosY=this.posY=this.prevPosY=this.center[1]=centerY1;
this.lastTickPosZ=this.posZ=this.prevPosZ=this.center[2]=centerZ1;
this.radius=radius1;
float r2 = radius*radius;
int numParticles = (int)(r2*radius/32)+64;
this.startPos = new double[numParticles][3];
this.pos = new double[numParticles][3];
this.prevPos = new double[numParticles][3];
this.particleScale *= 40f;
this.particlesMaxAge = new int[numParticles];
this.particlesTextureIndexX = new int[numParticles];
this.particlesTextureIndexY= new int[numParticles];
this.motion = new float[numParticles][3];
for(int i=0;i<numParticles;i++)
{
float fPosX = random.nextFloat()*2f-1f;
float fPosY = (random.nextFloat()*2f-1f)*IHLMathUtils.sqrt(1f-fPosX*fPosX);
float fPosZ = (random.nextFloat()*2f-1f)*IHLMathUtils.sqrt(1f-fPosX*fPosX-fPosY*fPosY);
fPosX *= radius1;
fPosY *= radius1;
fPosZ *= radius1;
prevPos[i][0] = pos[i][0] = startPos[i][0] = fPosX + centerX1;
prevPos[i][1] = pos[i][1] = startPos[i][1] = fPosY + centerY1;
prevPos[i][2] = pos[i][2] = startPos[i][2] = fPosZ + centerZ1;
particlesMaxAge[i] = random.nextInt(particleMaxAge-20)+16;
particlesTextureIndexY[i]=random.nextInt(8);
}
this.noClip = true;
this.renderDistanceWeight = 6.0D+radius1/2;
}
@Override
public void renderParticle(Tessellator tessellator, float interFrame, float rotationX, float rotationXZ, float rotationZ, float rotationYZ, float rotationXY)
{
for(int i=0;i<particlesMaxAge.length;i++)
{
float u1 = this.particlesTextureIndexX[i] / 16.0F;
float u2 = u1 + 1F / 16.0F;
float v1 = this.particlesTextureIndexY[i] / 8.0F;
float v2 = v1 + 1F / 8.0F;
float scale = 0.1F * this.particleScale;
float fPosX = (float)(this.prevPos[i][0] - this.prevPosX + (this.pos[i][0] - this.prevPos[i][0]) * interFrame);
float fPosY = (float)(this.prevPos[i][1] - this.prevPosY + (this.pos[i][1] - this.prevPos[i][1]) * interFrame);
float fPosZ = (float)(this.prevPos[i][2] - this.prevPosZ + (this.pos[i][2] - this.prevPos[i][2]) * interFrame);
tessellator.addVertexWithUV(
fPosX - rotationX * scale - rotationYZ * scale,
fPosY - rotationXZ * scale,
fPosZ - rotationZ * scale - rotationXY * scale,
u2, v2);
tessellator.addVertexWithUV(
fPosX - rotationX * scale + rotationYZ * scale,
fPosY + rotationXZ * scale,
fPosZ - rotationZ * scale + rotationXY * scale,
u2, v1);
tessellator.addVertexWithUV(
fPosX + rotationX * scale + rotationYZ * scale,
fPosY + rotationXZ * scale,
fPosZ + rotationZ * scale + rotationXY * scale,
u1, v1);
tessellator.addVertexWithUV(
fPosX + rotationX * scale - rotationYZ * scale,
fPosY - rotationXZ * scale,
fPosZ + rotationZ * scale - rotationXY * scale,
u1, v2);
}
}
@Override
public void onUpdate()
{
if (this.particleAge++ >= this.particleMaxAge)
{
this.setDead();
}
for(int i=0;i<particlesMaxAge.length;i++)
{
this.prevPos[i][0] = this.pos[i][0];
this.prevPos[i][1] = this.pos[i][1];
this.prevPos[i][2] = this.pos[i][2];
int maxFrameX = 15;
int frameX = this.particleAge * maxFrameX / this.particlesMaxAge[i];
if(frameX<=maxFrameX)
{
this.particlesTextureIndexX[i] = frameX;
}
if(this.startPos[i][1] < this.center[1])
{
IHLMathUtils.vector_add(this.motion[i],
(float)(this.center[0]-this.pos[i][0])*0.0004f,
0.004f,
(float)(this.center[2]-this.pos[i][2])*0.0004f);
}
else
{
float[] ring = new float[] {
(float)(this.startPos[i][0]-this.center[0]),
0f,
(float)(this.startPos[i][2]-this.center[2])};
IHLMathUtils.scale_vector_to_value(ring, radius*0.6f);
IHLMathUtils.vector_add(ring,
this.center[0],
(float)this.startPos[i][1]+this.particleAge*0.001f,
this.center[2]);
float[] from_point_to_ring = IHLMathUtils.vector_return_difference(ring,this.pos[i]);
float[] from_point_to_center = IHLMathUtils.vector_return_difference(this.center,this.pos[i]);
float[] tangent_to_ring = IHLMathUtils.vector_vector_multiply(from_point_to_ring, from_point_to_center);
float[] tangent_to_torus = IHLMathUtils.vector_vector_multiply(from_point_to_ring, tangent_to_ring);
IHLMathUtils.normalize_vector(tangent_to_torus);
IHLMathUtils.vector_add(this.motion[i],
from_point_to_ring[0]*0.01f + tangent_to_torus[0]*0.02f,
from_point_to_ring[1]*0.01f + tangent_to_torus[1]*0.02f + 0.004f,
from_point_to_ring[2]*0.01f + tangent_to_torus[2]*0.02f);
}
IHLMathUtils.vector_add(this.pos[i],this.motion[i]);
IHLMathUtils.multiply_vector_to_value(this.motion[i], 0.98f);
}
}
@Override
public void setParticleTextureIndex(int par1)
{
this.particleTextureIndexX = par1;
}
@Override
public boolean shouldRenderInPass(int pass)
{
return pass==1;
}
}
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