Electroblob
84 lines
3.1 KiB
Java
84 lines
3.1 KiB
Java
package electroblob.wizardry.client.particle;
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import net.minecraft.block.state.IBlockState;
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import net.minecraft.client.particle.ParticleDigging;
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import net.minecraft.util.math.BlockPos;
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import net.minecraft.world.World;
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import net.minecraftforge.fml.relauncher.Side;
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import net.minecraftforge.fml.relauncher.SideOnly;
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@SideOnly(Side.CLIENT)
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public class ParticleTornado extends ParticleDigging {
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private double angle;
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private double radius;
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private double speed;
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/** Velocity of the tornado itself; in other words the velocity of the point the particle circles around. */
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private double velX, velZ;
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private boolean fullBrightness = false;
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public ParticleTornado(World world, int maxAge, double originX, double originZ, double radius, double yPos, double velX, double velZ, IBlockState block){
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super(world, 0, 0, 0, 0, 0, 0, block);
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this.angle = this.rand.nextDouble() * Math.PI * 2;
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double x = originX - Math.cos(angle)*radius;
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double z = originZ + radius*Math.sin(angle);
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this.radius = radius;
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this.setPosition(x, yPos, z);
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this.prevPosX = x;
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this.prevPosY = yPos;
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this.prevPosZ = z;
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//this.particleScale *= 0.75F;
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this.particleMaxAge = maxAge;
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this.canCollide = false;
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// Grass has special treatment, since it has a colourised top but the rest is normal.
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// Commented out for now since vanilla does something about this now, but I'm not sure what exactly
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//if(block.getBlock() != Blocks.GRASS || side == 1) this.setColour(block.getRenderColor(side));
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// Blocks that emit light are rendered with full brightness.
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if(block.getLightValue(world, new BlockPos(this.posX, this.posY, this.posZ)) == 0){
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this.particleRed *= 0.75;
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this.particleGreen *= 0.75;
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this.particleBlue *= 0.75;
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}else{
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this.fullBrightness = true;
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}
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speed = rand.nextDouble()*2 + 1;
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this.velX = velX;
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this.velZ = velZ;
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}
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@Override
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public void onUpdate(){
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this.prevPosX = this.posX;
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this.prevPosY = this.posY;
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this.prevPosZ = this.posZ;
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if(this.particleAge++ >= this.particleMaxAge){
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this.setExpired();
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}
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// This is in radians per tick...
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double omega = Math.signum(speed) * ((Math.PI*2)/20 - speed/(20*radius));
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// v = r times omega; therefore the normalised velocity vector needs to be r times the angle increment / 2 pi.
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this.angle += omega;
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this.motionZ = radius * omega * Math.cos(angle);
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this.motionX = radius * omega * Math.sin(angle);
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this.moveEntity(motionX + velX, 0, motionZ + velZ);
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if(this.particleAge > this.particleMaxAge / 2){
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this.setAlphaF(1.0F - ((float)this.particleAge - (float)(this.particleMaxAge / 2)) / (float)this.particleMaxAge);
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}
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}
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@Override
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public int getBrightnessForRender(float partialTicks){
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return fullBrightness ? 15728880 : super.getBrightnessForRender(partialTicks);
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}
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}
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