/*
* This file is part of Applied Energistics 2.
* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
*
* Applied Energistics 2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Applied Energistics 2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
*/
package appeng.client.render.effects;
import java.util.Random;
import net.minecraft.client.Minecraft;
import net.minecraft.client.particle.Particle;
import net.minecraft.client.renderer.VertexBuffer;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.math.MathHelper;
import net.minecraft.world.World;
public class LightningFX extends Particle
{
private static final Random RANDOM_GENERATOR = new Random();
private static final int STEPS = 5;
private static final int BRIGHTNESS = 13 << 4;
private final double[][] precomputedSteps;
private final double[] vertices = new double[3];
private final double[] verticesWithUV = new double[3];
private boolean hasData = false;
public LightningFX( final World w, final double x, final double y, final double z, final double r, final double g, final double b )
{
this( w, x, y, z, r, g, b, 6 );
this.regen();
}
protected LightningFX( final World w, final double x, final double y, final double z, final double r, final double g, final double b, final int maxAge )
{
super( w, x, y, z, r, g, b );
this.precomputedSteps = new double[LightningFX.STEPS][3];
this.motionX = 0;
this.motionY = 0;
this.motionZ = 0;
this.particleMaxAge = maxAge;
}
protected void regen()
{
double lastDirectionX = ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9;
double lastDirectionY = ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9;
double lastDirectionZ = ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9;
for( int s = 0; s < LightningFX.STEPS; s++ )
{
this.precomputedSteps[s][0] = lastDirectionX = ( lastDirectionX + ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9 ) / 2.0;
this.precomputedSteps[s][1] = lastDirectionY = ( lastDirectionY + ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9 ) / 2.0;
this.precomputedSteps[s][2] = lastDirectionZ = ( lastDirectionZ + ( RANDOM_GENERATOR.nextDouble() - 0.5 ) * 0.9 ) / 2.0;
}
}
protected int getSteps()
{
return LightningFX.STEPS;
}
@Override
public void onUpdate()
{
this.prevPosX = this.posX;
this.prevPosY = this.posY;
this.prevPosZ = this.posZ;
if (this.particleAge++ >= this.particleMaxAge)
{
this.setExpired();
}
this.motionY -= 0.04D * (double)this.particleGravity;
this.moveEntity(this.motionX, this.motionY, this.motionZ);
this.motionX *= 0.9800000190734863D;
this.motionY *= 0.9800000190734863D;
this.motionZ *= 0.9800000190734863D;
}
@Override
public void renderParticle( final VertexBuffer tess, final Entity p_180434_2_, final float l, final float rX, final float rY, final float rZ, final float rYZ, final float rXY )
{
final float j = 1.0f;
float red = this.particleRed * j * 0.9f;
float green = this.particleGreen * j * 0.95f;
float blue = this.particleBlue * j;
final float alpha = this.particleAlpha;
if( this.particleAge == 3 )
{
this.regen();
}
double f6 = this.particleTextureIndexX / 16.0;
final double f7 = f6 + 0.0324375F;
double f8 = this.particleTextureIndexY / 16.0;
final double f9 = f8 + 0.0324375F;
f6 = f7;
f8 = f9;
double scale = 0.02;// 0.02F * this.particleScale;
final double[] a = new double[3];
final double[] b = new double[3];
double ox = 0;
double oy = 0;
double oz = 0;
final EntityPlayer p = Minecraft.getMinecraft().thePlayer;
double offX = -rZ;
double offY = MathHelper.cos( (float) ( Math.PI / 2.0f + p.rotationPitch * 0.017453292F ) );
double offZ = rX;
for( int layer = 0; layer < 2; layer++ )
{
if( layer == 0 )
{
scale = 0.04;
offX *= 0.001;
offY *= 0.001;
offZ *= 0.001;
red = this.particleRed * j * 0.4f;
green = this.particleGreen * j * 0.25f;
blue = this.particleBlue * j * 0.45f;
}
else
{
offX = 0;
offY = 0;
offZ = 0;
scale = 0.02;
red = this.particleRed * j * 0.9f;
green = this.particleGreen * j * 0.65f;
blue = this.particleBlue * j * 0.85f;
}
for( int cycle = 0; cycle < 3; cycle++ )
{
this.clear();
double x = ( this.prevPosX + ( this.posX - this.prevPosX ) * l - interpPosX ) - offX;
double y = ( this.prevPosY + ( this.posY - this.prevPosY ) * l - interpPosY ) - offY;
double z = ( this.prevPosZ + ( this.posZ - this.prevPosZ ) * l - interpPosZ ) - offZ;
for( int s = 0; s < LightningFX.STEPS; s++ )
{
final double xN = x + this.precomputedSteps[s][0];
final double yN = y + this.precomputedSteps[s][1];
final double zN = z + this.precomputedSteps[s][2];
final double xD = xN - x;
final double yD = yN - y;
final double zD = zN - z;
if( cycle == 0 )
{
ox = ( yD * 0 ) - ( 1 * zD );
oy = ( zD * 0 ) - ( 0 * xD );
oz = ( xD * 1 ) - ( 0 * yD );
}
if( cycle == 1 )
{
ox = ( yD * 1 ) - ( 0 * zD );
oy = ( zD * 0 ) - ( 1 * xD );
oz = ( xD * 0 ) - ( 0 * yD );
}
if( cycle == 2 )
{
ox = ( yD * 0 ) - ( 0 * zD );
oy = ( zD * 1 ) - ( 0 * xD );
oz = ( xD * 0 ) - ( 1 * yD );
}
final double ss = Math.sqrt( ox * ox + oy * oy + oz * oz ) / ( ( ( (double) LightningFX.STEPS - (double) s ) / LightningFX.STEPS ) * scale );
ox /= ss;
oy /= ss;
oz /= ss;
a[0] = x + ox;
a[1] = y + oy;
a[2] = z + oz;
b[0] = x;
b[1] = y;
b[2] = z;
this.draw( red, green, blue, tess, a, b, f6, f8 );
x = xN;
y = yN;
z = zN;
}
}
}
/*
* GL11.glPushAttrib( GL11.GL_ALL_ATTRIB_BITS ); GL11.glDisable( GL11.GL_CULL_FACE ); tess.draw();
* GL11.glPopAttrib(); tess.startDrawingQuads();
*/
}
private void clear()
{
this.hasData = false;
}
private void draw( float red, float green, float blue, final VertexBuffer tess, final double[] a, final double[] b, final double f6, final double f8 )
{
if( this.hasData )
{
tess.pos( a[0], a[1], a[2] ).tex( f6, f8 ).color( red, green, blue, this.particleAlpha ).lightmap( BRIGHTNESS, BRIGHTNESS ).endVertex();
tess.pos( this.vertices[0], this.vertices[1], this.vertices[2] ).tex( f6, f8 ).color( red, green, blue, this.particleAlpha ).lightmap( BRIGHTNESS, BRIGHTNESS ).endVertex();
tess.pos( this.verticesWithUV[0], this.verticesWithUV[1], this.verticesWithUV[2] ).tex( f6, f8 ).color( red, green, blue, this.particleAlpha ).lightmap( BRIGHTNESS, BRIGHTNESS ).endVertex();
tess.pos( b[0], b[1], b[2] ).tex( f6, f8 ).color( red, green, blue, this.particleAlpha ).lightmap( BRIGHTNESS, BRIGHTNESS ).endVertex();
}
this.hasData = true;
for( int x = 0; x < 3; x++ )
{
this.vertices[x] = a[x];
this.verticesWithUV[x] = b[x];
}
}
protected double[][] getPrecomputedSteps()
{
return this.precomputedSteps;
}
}