1 files changed, 9 insertions, 0 deletions
diff --git a/src/particle.h b/src/particle.h
index 4a11c4cb..d98f2c39 100644
--- a/src/particle.h
+++ b/src/particle.h
@@ -161,6 +161,9 @@ class Particle : public Sprite
         { mPos.x += x; mPos.y += y; mPos.z += z; }
 
         void
+        moveChildren(Vector change);
+
+        void
         moveBy (Vector change)
         { mPos += change; }
 
@@ -271,6 +274,12 @@ class Particle : public Sprite
         { return mAlive; }
 
         /**
+         * Determines whether the particle and its children are all dead
+         */
+        bool isExtinct()
+        { return !isAlive() && mChildParticles.empty(); }
+
+        /**
          * Manually marks the particle for deletion.
          */
         void kill()