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Fix circle spawning bias

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This commit is contained in:
Gjum
2023-02-05 05:52:00 +01:00
committed by GitHub
parent 9ed9b209d2
commit e006e05dec
1 changed files with 5 additions and 1 deletions
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6
plugins/randomspawn-paper/paper/src/main/java/me/josvth/randomspawn/RandomSpawn.java
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@@ -161,8 +161,12 @@ public class RandomSpawn extends JavaPlugin {
maxTries = 1000; // sensible limits plz
}
// Uniformly distributed in "annulus". Explanation: https://forum.unity.com/threads/random-point-within-circle-with-min-max-radius.597523/#post-8524934
double ex2 = exclusionRadius * exclusionRadius;
double r2 = radius * radius;
do {
double r = exclusionRadius + Math.random() * (radius - exclusionRadius);
double r = Math.sqrt(Math.random() * (r2 - ex2) + ex2);
double phi = Math.random() * 2d * Math.PI;
double x = Math.round(center.getX() + Math.cos(phi) * r);