69 lines
2.3 KiB
Java
69 lines
2.3 KiB
Java
package carpet.helpers;
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import com.mojang.brigadier.StringReader;
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import com.mojang.brigadier.exceptions.CommandSyntaxException;
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import net.minecraft.command.argument.ParticleArgumentType;
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import net.minecraft.particle.ParticleEffect;
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import net.minecraft.server.network.ServerPlayerEntity;
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import net.minecraft.server.world.ServerWorld;
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import net.minecraft.util.math.Vec3d;
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import java.util.HashMap;
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import java.util.Map;
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public class ParticleDisplay
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{
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private static Map<String, ParticleEffect> particleCache = new HashMap<>();
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private static ParticleEffect parseParticle(String name)
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{
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try
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{
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return ParticleArgumentType.readParameters(new StringReader(name));
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}
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catch (CommandSyntaxException e)
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{
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throw new RuntimeException("No such particle: "+name);
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}
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}
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public static ParticleEffect getEffect(String name)
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{
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if (name == null) return null;
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ParticleEffect res = particleCache.get(name);
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if (res != null) return res;
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particleCache.put(name, parseParticle(name));
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return particleCache.get(name);
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}
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public static void drawParticleLine(ServerPlayerEntity player, Vec3d from, Vec3d to, String main, String accent, int count, double spread)
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{
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ParticleEffect accentParticle = getEffect(accent);
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ParticleEffect mainParticle = getEffect(main);
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if (accentParticle != null) ((ServerWorld)player.world).spawnParticles(
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player,
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accentParticle,
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true,
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to.x, to.y, to.z, count,
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spread, spread, spread, 0.0);
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double lineLengthSq = from.squaredDistanceTo(to);
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if (lineLengthSq == 0) return;
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Vec3d incvec = to.subtract(from).normalize();// multiply(50/sqrt(lineLengthSq));
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int pcount = 0;
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for (Vec3d delta = new Vec3d(0.0,0.0,0.0);
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delta.lengthSquared()<lineLengthSq;
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delta = delta.add(incvec.multiply(player.world.random.nextFloat())))
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{
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((ServerWorld)player.world).spawnParticles(
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player,
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mainParticle,
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true,
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delta.x+from.x, delta.y+from.y, delta.z+from.z, 1,
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0.0, 0.0, 0.0, 0.0);
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}
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}
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}
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