File indexing completed on 2024-04-28 04:02:02

 /*
     This file is part of the KDE project "KBounce"
 
     SPDX-FileCopyrightText: 2000-2005 Stefan Schimanski <1Stein@gmx.de>
     SPDX-FileCopyrightText: 2007 Tomasz Boczkowski <tboczkowski@onet.pl>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef GAMEOBJECT_H
 #define GAMEOBJECT_H
 
 #include <QList>
 #include <QRectF>
 
 enum KBounceObjectType
 {
     TILE = 1,
     BALL = 2,
     WALL = 4,
     ALL = 0xFF
 };
 
 /*
  * Simple 2D vector ( as in math not container )
  */
 struct KBounceVector
 {
     qreal x, y;
 
     KBounceVector( qreal newx = 0, qreal newy = 0 ) : x( newx ), y( newy ) {}
 
     KBounceVector& operator+=(KBounceVector rv )
     {
         x += rv.x; y += rv.y; 
         return *this;
     }
 
     /*
      * Simple function to calculate a vector perpendicular to 
      * sufrace of rect2 in the spot where rect1 intersects it.
      * Note it is a very simple function as the vectors it generates
      * can have different lengths. 
      */
     static KBounceVector normal( const QRectF& rect1, const QRectF& rect2 );
 };
 
 /*
  * This struct contains information about collision of one pair of objects
  * Collision testing functions in this game choose one objects referred as
  * "being hitted" and check if it intersects with another referred as
  * "hitters"
  */
 struct KBounceHit
 {
     /*
      * Type of hitter
      */
     KBounceObjectType type;
     /*
      * Bounding rect of hitter
      */
     QRectF boundingRect;
     /*
      * Velocity of  hiter
      */
     KBounceVector velocity;
     /*
      * Vector perpendicular to object's being hitted surface in
      * the area of intersection with hitter
      */
     KBounceVector normal;
 };
 
 typedef QList<KBounceHit> KBounceCollision;
 
 #define GAME_DELAY 16
 
 #endif //GAMEOBJECT_H