X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fmoving_object.hpp;h=4cc5dc2d098ffa645f73aef43b9e2cf43d8a6889;hb=198f758764fff064a47630b5d0f1e3d6aabe95a8;hp=29e12f2c64fc3fd875f2185c8e6800be007f5824;hpb=ca86583fae991aa3280c5d70bf20dbf0504a93cb;p=supertux.git

diff --git a/src/moving_object.hpp b/src/moving_object.hpp
index 29e12f2c6..4cc5dc2d0 100644
--- a/src/moving_object.hpp
+++ b/src/moving_object.hpp
@@ -31,7 +31,7 @@ class CollisionGrid;
 
 enum CollisionGroup {
   /** Objects in DISABLED group are not tested for collisions */
-  COLGROUP_DISABLED,
+  COLGROUP_DISABLED = 0,
   /**
    * "default" is moving object. MovingObjects get tested against all other
    * objects and against other movingobjects
@@ -45,7 +45,7 @@ enum CollisionGroup {
   /** TODO write docu :-/ */
   COLGROUP_MOVING_STATIC,
   /**
-   * Doesn't move and isn't explicitely checked for collisions with other
+   * Doesn't move and isn't explicitly checked for collisions with other
    * objects (but other objects might check with this)
    * The difference to COLGROUP_TOUCHABLE is that we can do multiple
    * collision response tests in a row which is needed for static object
@@ -56,7 +56,7 @@ enum CollisionGroup {
    */
   COLGROUP_STATIC,
   /**
-   * Isn't explicitely checked for collisions with other objects. But other
+   * Isn't explicitly checked for collisions with other objects. But other
    * objects might check with this object.
    * Difference to COLGROUP_STATIC is that collisions with this object are
    * only tested once and collision response is typically not handled
@@ -87,6 +87,16 @@ public:
   {
     (void) hit;
   }
+  /**
+   * when 2 objects collided, we will first call the pre_collision_check
+   * functions of both objects that can decide on how to react to the collision.
+   */
+  virtual bool collides(GameObject& other, const CollisionHit& hit)
+  {
+    (void) other;
+    (void) hit;
+    return true;
+  }
   /** this function is called when the object collided with any other object */
   virtual HitResponse collision(GameObject& other, const CollisionHit& hit) = 0;
   /** called when tiles with special attributes have been touched */
@@ -111,7 +121,7 @@ public:
     return movement;
   }
 
-  /** places the moving object at a specific position. Be carefull when
+  /** places the moving object at a specific position. Be careful when
    * using this function. There are no collision detection checks performed
    * here so bad things could happen.
    */