feat: adding IgnoresCollisionTags status (#63)

kurtome · Sep 1, 2024 · de882d6 · de882d6
1 parent 4a53cea
commit de882d6
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Showing 2 changed files with 21 additions and 1 deletion.
diff --git a/packages/leap/lib/src/entities/behaviors/collision_detection_behavior.dart b/packages/leap/lib/src/entities/behaviors/collision_detection_behavior.dart
@@ -18,6 +18,8 @@ class CollisionDetectionBehavior extends PhysicalBehavior
   /// Used to test intersections.
   final _hitboxProxy = _HitboxProxyComponent();
 
+  final _tmpIgnoreTags = <String>{};
+
   @override
   void onMount() {
     super.onMount();
@@ -331,8 +333,20 @@ class CollisionDetectionBehavior extends PhysicalBehavior
               .where((s) => s is IgnoredByWorld || s is IgnoredByCollisions)
               .isEmpty,
     );
+
+    _tmpIgnoreTags.clear();
+    parent.statuses.whereType<IgnoresCollisionTags>().forEach((status) {
+      _tmpIgnoreTags.addAll(status.ignoreTags);
+    });
     for (final other in physicals) {
-      if (!other.isRemoving && intersectsOther(_hitboxProxy, other)) {
+      var skip = false;
+      for (final tag in other.tags) {
+        if (_tmpIgnoreTags.contains(tag)) {
+          skip = true;
+        }
+      }
+      skip |= other.isRemoving;
+      if (!skip && intersectsOther(_hitboxProxy, other)) {
         _potentialHits.add(other);
       }
     }

diff --git a/packages/leap/lib/src/entities/status.dart b/packages/leap/lib/src/entities/status.dart
@@ -60,3 +60,9 @@ mixin IgnoresSolidCollisions on EntityStatus {}
 /// A status mixin which indicates the parent entity should not
 /// collide with non-solids.
 mixin IgnoresNonSolidCollisions on EntityStatus {}
+
+/// A status mixin which indicates the parent entity should not
+/// collide with any other entities which have a tag in [ignoreTags]
+mixin IgnoresCollisionTags on EntityStatus {
+  final ignoreTags = <String>{};
+}