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Added fast trig with lookup tables for artifacts.

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This commit is contained in:
Auxilor 2021-04-02 22:19:07 +01:00
parent 242cb16ee6
commit 7e6265076e
2 changed files with 55 additions and 2 deletions
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5
eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/itemtypes/Artifact.java
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@ -7,6 +7,7 @@ import com.willfp.ecoenchants.enchantments.EcoEnchant;
import com.willfp.ecoenchants.enchantments.EcoEnchants;
import com.willfp.ecoenchants.enchantments.meta.EnchantmentType;
import com.willfp.ecoenchants.enchantments.util.EnchantChecks;
import com.willfp.ecoenchants.enchantments.util.FastTrig;
import org.bukkit.Location;
import org.bukkit.Particle;
import org.bukkit.block.Block;
@ -140,8 +141,8 @@ public abstract class Artifact extends EcoEnchant {
}
yAtomic.addAndGet(yDelta);
double y = yAtomic.get();
double x = radius * Math.cos((y + offset) * radiusMultiplier);
double z = radius * Math.sin((y + offset) * radiusMultiplier);
double x = radius * FastTrig.cos((y + offset) * radiusMultiplier);
double z = radius * FastTrig.sin((y + offset) * radiusMultiplier);
Location particleLocation = victim.getLocation();
particleLocation.add(x, y, z);
victim.getWorld().spawnParticle(particle, particleLocation, 1, 0, 0, 0, 0, extra, false);

52
eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/util/FastTrig.java Normal file
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@ -0,0 +1,52 @@
package com.willfp.ecoenchants.enchantments.util;
import lombok.experimental.UtilityClass;
@UtilityClass
public class FastTrig {
/**
* Precision.
*/
private static final int precision = 100;
/**
* Modulus.
*/
private static final int modulus = 360 * precision;
/**
* Sin lookup table.
*/
private static final double[] sin = new double[modulus];
private static double sinLookup(final int a) {
return a >= 0 ? sin[a % modulus] : -sin[-a % modulus];
}
/**
* Get the sin of a number.
*
* @param a The number.
* @return The sin.
*/
public static double sin(final double a) {
return sinLookup((int) (a * precision + 0.5f));
}
/**
* Get the cosine of a number.
*
* @param a The number.
* @return The cosine.
*/
public static double cos(final double a) {
return sinLookup((int) ((a + 90f) * precision + 0.5f));
}
static {
for (int i = 0; i < sin.length; i++) {
sin[i] = Math.sin((i * Math.PI) / (precision * 180));
}
}
}