// $Id: collisions.cc,v 1.4 2006/08/05 09:08:58 matthew Exp $

//  Fish Supper
//  Copyright (C) 2006 Matthew Clarke <matthew_larcke@lycos.co.uk>
//
//  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 2
//  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, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
//  02111-1307, USA.




#include "collisions.h"




// ************************
// *** MEMBER FUNCTIONS ***
// ************************

// **************************************************

bool Collisions::intersects( const SDL_Rect & s1, const SDL_Rect & s2 )
{
    return ( s1.x >= s2.x - s1.w + 1 &&
             s1.x <= s2.x + s2.w - 1 &&
             s1.y >= s2.y - s1.h + 1 &&
             s1.y <= s2.y + s2.h - 1 );
    
} // Collisions::intersects()
                              
// **************************************************

bool Collisions::contains( const SDL_Rect & s1, const SDL_Rect & s2 )
{
    return ( s2.x >= s1.x &&
             s2.x + s2.w - 1 < s1.x + s1.w &&
             s2.y >= s1.y && 
             s2.y + s2.h - 1 < s1.y + s1.h );
    
} // Collisions::contains()

// **************************************************