src/CSprite.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 "CSprite.h"
  23
  24 /**
  25 * Creates a new Sprite object
  26 */
  27 Sprite::Sprite()
  28 {
  29         for (int i = 0 ; i < 8 ; i++)
  30         {
  31                 image[i] = NULL;
  32                 frameLength[i] = 0;
  33         }
  34
  35         currentFrame = 0;
  36         currentTime = 0;
  37         maxFrames = 0;
  38
  39         next = NULL;
  40
  41         randomFrames = false;
  42 }
  43
  44 /**
  45 * Sets the specified train with the specified image with
  46 * a specified time
  47 * @param i The index of the frame to set (0 - 7)
  48 * @param shape The image to be used
  49 * @param time How long this frame will last
  50 */
  51 void Sprite::setFrame(int i, SDL_Surface *shape, int time)
  52 {
  53         image[i] = shape;
  54         frameLength[i] = time;
  55
  56         currentFrame = 0;
  57         currentTime = frameLength[0];
  58
  59         if (i > maxFrames)
  60                 maxFrames = i;
  61 }
  62
  63 void Sprite::animate()
  64 {
  65         currentTime--;
  66
  67         if (currentTime > 0)
  68                 return;
  69
  70         currentFrame++;
  71
  72         if (currentFrame == 8)
  73                 currentFrame = 0;
  74
  75         if (frameLength[currentFrame] == 0)
  76                 currentFrame = 0;
  77
  78         currentTime = frameLength[currentFrame];
  79 }
  80
  81 void Sprite::getNextFrame(unsigned char *frame, unsigned char *time)
  82 {
  83         if (*frame >= 8)
  84                 *frame = 0;
  85
  86         if (frameLength[*frame] == 0)
  87                 *frame = 0;
  88
  89         *time = frameLength[*frame];
  90 }
  91
  92 SDL_Surface *Sprite::getCurrentFrame()
  93 {
  94         return image[currentFrame];
  95 }
  96
  97 void Sprite::free()
  98 {
  99         for (int i = 0 ; i < 8 ; i++)
 100         {
 101                 if (image[i] != NULL)
 102                 {
 103                         SDL_FreeSurface(image[i]);
 104                         image[i] = NULL;
 105                         frameLength[i] = 0;
 106                 }
 107         }
 108
 109         currentFrame = 0;
 110         currentTime = 0;
 111         maxFrames = 0;
 112 }