added GPL copyrights

[physics.git] / src / Effects / Screen.cpp

diff --git a/src/Effects/Screen.cpp b/src/Effects/Screen.cpp
index bbae5bb..44cce18 100644 (file)
--- a/src/Effects/Screen.cpp
+++ b/src/Effects/Screen.cpp
@@ -1,7 +1,27 @@
+/*
+ *  Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "Screen.h"
-#include "../debug.h"
 
 #include "../Entities/PhysicsEntity.h"
+#include "../Entities/Ball.h"
+
+
+/// ***** Constructors/Destructors *****
 
 Screen::Screen()
 {
@@ -12,10 +32,7 @@ Screen::~Screen()
 
 }
 
-Vector2 Screen::positionDelta(const PhysicsEntity*, float) const
-{
-    return Vector2(0,0);
-}
+/// ***** Public Class Methods *****
 
 Vector2 Screen::velocityDelta(const PhysicsEntity* e, float time_step) const
 {
@@ -24,30 +41,23 @@ Vector2 Screen::velocityDelta(const PhysicsEntity* e, float time_step) const
 
     Vector2 acc(0,0);
 
-    if(pos.y > 600 && velo.y > 0)
-    {
+    float radius = 0;
+    const Ball* b = dynamic_cast<const Ball*>(e);
+    if( b != NULL )
+        radius = b->getRadius();
+
+
+    if(pos.y > 600-radius && velo.y > 0)
         acc.y += velo.y * -2;
-    }
 
-    if(pos.y < 0 && velo.y < 0)
-    {
+    if(pos.y < 0+radius && velo.y < 0)
         acc.y += velo.y * -2;
-    }
 
-    if(pos.x > 800 && velo.x > 0)
-    {
+    if(pos.x > 800-radius && velo.x > 0)
         acc.x += velo.x * -2;
-    }
 
-    if(pos.x < 0 && velo.x < 0)
-    {
+    if(pos.x < 0+radius && velo.x < 0)
         acc.x += velo.x * -2;
-    }
 
     return acc;
 }
-
-Vector2 Screen::forceDelta(const PhysicsEntity*, float) const
-{
-    return Vector2(0,0);
-}