Fixes issue in sprite constraint

ffd3a1b2 · Viktor Lidholt · e72a66ec · ffd3a1b2
Commit ffd3a1b2 authored Sep 02, 2015 by Viktor Lidholt
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constraint.dart packages/flutter_sprites/lib/constraint.dart +5 -0

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--- a/packages/flutter_sprites/lib/constraint.dart
+++ b/packages/flutter_sprites/lib/constraint.dart
@@ -53,6 +53,11 @@ class ConstraintRotationToNode extends Constraint {
  void constrain(Node node, double dt) {
    Offset offset;

+    if (targetNode.spriteBox != node.spriteBox) {
+      // The target node is in another sprite box or has been removed
+      return;
+    }
+
    if (targetNode.parent == node.parent) {
      offset = targetNode.position - node.position;
    } else {