animation.h

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008, 2009 Thomas Perl <thp@thpinfo.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  20  * MA  02110-1301, USA.
  21  *
  22  **/
  23
  24 #ifndef __ANIMATION_H
  25 #define __ANIMATION_H
  26
  27 #include "graphics.h"
  28
  29 enum {
  30     ANIMATION_FADE_IN     = 1<<0,
  31     ANIMATION_FADE_OUT    = 1<<1,
  32     ANIMATION_FROM_BOTTOM = 1<<2,
  33     ANIMATION_ZOOM_2X     = 1<<3,
  34     ANIMATION_SLIDE_LEFT  = 1<<4,
  35     ANIMATION_SLIDE_RIGHT = 1<<5
  36 };
  37
  38 #define ANIMATION_INTRO_EFFECTS (ANIMATION_FADE_IN | ANIMATION_FADE_OUT | ANIMATION_ZOOM_2X)
  39
  40 /**
  41  * How much time of the animation should be spent
  42  * on fading (0.0..1.0) - usually 1/4 or so...
  43  **/
  44 #define ANIMATION_FADE_PART (0.25)
  45
  46 enum {
  47     GRAVITY_TOPLEFT = 0,
  48     GRAVITY_TOP,
  49     GRAVITY_CENTER_SCREEN,
  50     GRAVITY_CENTER_UPPERHALF,
  51     GRAVITY_CENTER_BOTTOMHALF
  52 };
  53
  54 struct _AnimationPart {
  55     Uint32 start;
  56     Uint32 end;
  57
  58     unsigned int effects;
  59
  60     int x;
  61     int y;
  62     int zindex;
  63
  64     SDL_Surface* surface;
  65     unsigned char free_surface;
  66     int pos;
  67     int count;
  68
  69     unsigned int gravity;
  70
  71     struct _AnimationPart* prev;
  72     struct _AnimationPart* next;
  73 };
  74
  75 typedef struct _AnimationPart AnimationPart;
  76
  77 typedef struct {
  78     AnimationPart *head;
  79     AnimationPart *tail;
  80     Uint32 duration;
  81 } Animation;
  82
  83 typedef struct {
  84     Animation* animation;
  85     Uint32 started;
  86     Uint32 current;
  87     Uint32 ending;
  88 } AnimationState;
  89
  90
  91 Animation* animation_new();
  92 Animation* animation_append(Animation*, AnimationPart*);
  93 void animation_free(Animation*);
  94
  95 AnimationState* animation_state_new(Animation*);
  96 void animation_state_run(AnimationState*, int);
  97 int animation_state_update(AnimationState*);
  98 void animation_state_free(AnimationState*);
  99
 100 AnimationPart* animation_part_new_from_surface(Uint32, Uint32, unsigned int,
 101         int, int, int, unsigned int, SDL_Surface*, unsigned char, int, int);
 102
 103 AnimationPart* animation_part_new_text(Uint32, Uint32, unsigned int,
 104         int, int, int, unsigned int, font_id, const char*, Uint8, Uint8,
 105         Uint8);
 106
 107 void animation_part_display(AnimationPart*, AnimationState*);
 108 void animation_part_free(AnimationPart*);
 109
 110
 111 /* simplified function calls */
 112 #define animation_part_new_from_surface_simple(start, end, effects, \
 113         surface, free_surface) \
 114         (animation_part_new_from_surface(start, end, effects, 0, 0, 0, \
 115                      GRAVITY_CENTER_SCREEN, surface, free_surface, 0, 1))
 116
 117 #define animation_part_new_text_simple(start, end, effects, id, text) \
 118     (animation_part_new_text(start, end, effects, 0, 0, 0, \
 119                              GRAVITY_CENTER_SCREEN, id, text, 255, 255, 255))
 120
 121
 122 /* available animations */
 123 Animation* create_intro();
 124 Animation* create_credits();
 125
 126
 127 #endif
 128