order liberties

1 files changed, 16 insertions, 0 deletions

diff --git a/src/engine/vector2.js b/src/engine/vector2.js
index 0cf2217..2bd52f7 100644
--- a/src/engine/vector2.js
+++ b/src/engine/vector2.js
@@ -21,4 +21,20 @@ export class Vector2 {
 
         return false
     }
+
+
+    static removeIfInArray(value, array) {
+        return array.filter(x => !Vector2.equals(value, x))
+    }
+    
+    static isInArray(position, array) {
+        return Array.from(array)
+            .some(p => Vector2.equals(p, position))
+    }
+    
+    static pushIfNotInArray(position, array) {
+        if (!Vector2.isInArray(position, array)) {
+            array.push(position)
+        }
+    }
 }