src/CCollision.cpp

   1 /*
   2 Copyright © 2004 Parallel Realities
   3 Copyright © 2007-2008 Kővágó Zoltán <DirtY.iCE.hu@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13
  14 See the GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 */
  21
  22 #include "CCollision.h"
  23
  24 bool Collision::collision(float x0, float y0, int w0, int h0, float x2, float y2, int w1, int h1)
  25 {
  26         float x1 = x0 + w0;
  27         float y1 = y0 + h0;
  28
  29         float x3 = x2 + w1;
  30         float y3 = y2 + h1;
  31
  32         return !(x1<x2 || x3<x0 || y1<y2 || y3<y0);
  33 }
  34
  35 bool Collision::collision(Entity *ent1, Entity *ent2)
  36 {
  37         if ((ent1->flags & ENT_NOCOLLISIONS) || (ent2->flags & ENT_NOCOLLISIONS))
  38                 return false;
  39
  40         return collision(ent1->x, ent1->y, ent1->width, ent1->height, ent2->x, ent2->y, ent2->width, ent2->height);
  41 }
  42
  43 bool Collision::collision(Entity *ent, Switch *swt)
  44 {
  45         return collision(ent->x, ent->y, ent->width, ent->height, swt->x, swt->y, 64, 16);
  46 }