Fix crash when rubber band hits its owner

2022-05-20 08:17:15 +08:00 · 2022-05-20 08:17:15 +08:00 · 3b0df18167
commit 3b0df18167
parent f61dcb2ec3
1 changed files with 3 additions and 2 deletions
--- a/src/items/rubber_band.cpp
+++ b/src/items/rubber_band.cpp
@ -200,8 +200,9 @@ void RubberBand::update(int ticks)
            m_plunger->setKeepAlive(0);
            return;
        }
-
-        diff.normalize();   // diff can't be zero here
+        // diff can be zero if the rubber band hits its owner
+        if (diff.x() != 0.0f && diff.y() != 0.0f && diff.z() != 0.0f)
+            diff.normalize();
        m_owner->getBody()->applyCentralForce(diff*force);
        m_owner->increaseMaxSpeed(MaxSpeed::MS_INCREASE_RUBBER,
            kp->getPlungerBandSpeedIncrease(),