Prevent player from falling forever

packages/client/src/3d/Player.tsx

@@ -221,6 +221,11 @@ const Player = () => {
         groupRef.current.position.y = intersections[0].point.y + HEIGHT
       }
 
+      if (groupRef.current.position.y < -50) {
+        groupRef.current.position.copy(InitialPosition)
+        velocity.current.y = 0
+      }
+
       // Direction
       direction.current.z = Number(forward) - Number(backward)
       direction.current.x = Number(left) - Number(right)