PhysicsEntity: added a hit-reporting mechanism (for bullet animations)

entities/physicsentity.lua

@@ -62,6 +62,10 @@ PhysicsEntity = Class{
         Entity.delete(self)
     end;
 
+    -- Reimplement
+    wasHit = function(self)
+    end;
+
 
     -- Apply linear impulse with given direction and power
     punch = function(self, angle, power)

level_state.lua

@@ -153,6 +153,9 @@ function begin_contact(a, b, coll)
             bObj:setPowerUpMode(ChaingunMode())
             coll:setEnabled(false)
         else
+            aObj:wasHit()
+            bObj:wasHit()
+
             local plane = nil
             local other = nil
             if aObj:isinstance(Plane) then