diff --git a/src/main/java/emu/grasscutter/scripts/data/SceneRegion.java b/src/main/java/emu/grasscutter/scripts/data/SceneRegion.java
index 77706c7ec..99db23615 100644
--- a/src/main/java/emu/grasscutter/scripts/data/SceneRegion.java
+++ b/src/main/java/emu/grasscutter/scripts/data/SceneRegion.java
@@ -30,16 +30,48 @@ public class SceneRegion {
 
     public boolean contains(Position position) {
         switch (shape) {
-            case ScriptRegionShape.CUBIC:
-                return (Math.abs(pos.getX() - position.getX()) <= size.getX() / 2f)
-                        && (Math.abs(pos.getY() - position.getY()) <= size.getY() / 2f)
+            case ScriptRegionShape.SPHERE -> {
+                val x = pos.getX() - position.getX();
+                val y = pos.getY() - position.getY();
+                val z = pos.getZ() - position.getZ();
+                // x^2 + y^2 + z^2 = radius^2
+                return x * x + y * y + z * z <= radius * radius;
+            }
+            case ScriptRegionShape.CUBIC -> {
+                return (Math.abs(pos.getX() - position.getX()) <= size.getX() / 2f) 
+                        && (Math.abs(pos.getY() - position.getY()) <= size.getY() / 2f) 
                         && (Math.abs(pos.getZ() - position.getZ()) <= size.getZ() / 2f);
-            case ScriptRegionShape.SPHERE:
-                var x = Math.pow(pos.getX() - position.getX(), 2);
-                var y = Math.pow(pos.getY() - position.getY(), 2);
-                var z = Math.pow(pos.getZ() - position.getZ(), 2);
-                // ^ means XOR in java!
-                return x + y + z <= (radius * radius);
+            }
+            case ScriptRegionShape.POLYGON -> {
+                // algorithm is "ray casting": https://www.youtube.com/watch?v=RSXM9bgqxJM
+                if (Math.abs(pos.getY() - position.getY()) > height / 2f) return false;
+                var count = 0;
+                for (var i = 0; i < point_array.size(); ++i) {
+                    val j = (i + 1) % point_array.size();
+
+                    val yp = position.getZ();
+                    val y1 = point_array.get(i).getY();
+                    val y2 = point_array.get(j).getY();
+
+                    val xp = position.getX();
+                    val x1 = point_array.get(i).getX();
+                    val x2 = point_array.get(j).getX();
+
+                    if ((yp < y1) != (yp < y2) 
+                            && xp < x1 + ((yp - y1) / (y2 - y1)) * (x2 - x1)) {
+                        ++count;
+                    }
+                }
+
+                return count % 2 == 1;
+            }
+            case ScriptRegionShape.CYLINDER -> {
+                if (Math.abs(pos.getY() - position.getY()) > height / 2f) return false;
+                val x = pos.getX() - position.getX();
+                val z = pos.getZ() - position.getZ();
+                // x^2 + z^2 = radius^2
+                return x * x + z * z <= radius * radius;
+            }
         }
         return false;
     }