game.h

   1 /*
   2    Cantaveria - action adventure platform game
   3    Copyright (C) 2009  Evan Rinehart
   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.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to
  17
  18    The Free Software Foundation, Inc.
  19    51 Franklin Street, Fifth Floor
  20    Boston, MA  02110-1301, USA
  21 */
  22
  23
  24 #define PIXUP 1024
  25
  26 struct screen {
  27   unsigned char tiles[20][15];
  28   int flags;
  29   int exits[4];
  30 };
  31
  32 typedef struct {
  33   char* name;
  34   struct screen** screens;
  35   int tileset_gfx;
  36   char tileset_shapes[256];
  37   /*background*/
  38   int x,y,w,h;
  39
  40   int bg_gfx;
  41 } zone;
  42
  43 #define ZONE_LOOKUP(Z,I,J) (I >= Z->w || J >= Z->h || I < 0 || J < 0 ? NULL : *(Z->screens + (I) + (J)*Z->w))
  44
  45 struct box{int x,y,w,h;};
  46
  47 typedef struct {
  48   struct box box; /*absolute coords*/
  49   int x, y; /*absolute coords*/
  50   int vx, vy; /* pixels per ms / 256 */
  51   int xoff, yoff; /* pixel coords*/
  52   int bxoff, byoff; /* absolute coords */
  53   enum {LEFT, RIGHT} facing;
  54   sprite* spr; /*pixel coords*/
  55   zone* z;
  56   int si, sj;
  57   int flags;
  58 } mobile;
  59
  60 typedef struct {
  61   struct box box;
  62   int type;
  63 } bullet;
  64
  65 typedef struct {
  66   struct box box;
  67   //sprite* spr;
  68   int params[6];
  69   int t;
  70 } moveplat;
  71
  72
  73 struct player_motion {
  74   int state;
  75   int timer;
  76
  77 };
  78
  79
  80 struct game {
  81   void (*update)();
  82   void (*draw)();
  83
  84   rng_state rng;
  85
  86   zone* zones[32];
  87   int zone_count;
  88
  89   /*these track the location of the player*/
  90   int player_x;
  91   int player_y;
  92   zone* current_zone;
  93   int si, sj;
  94
  95
  96   /* entities */
  97
  98 };
  99
 100 extern struct game game;
 101
 102 enum {
 103 SPRITE_ONE,
 104 SPRITE_TWO,
 105 SPRITE_THREE,
 106 SPRITE_FOUR,
 107 SPR_BOX
 108 };
 109
 110
 111 void load_zone(char* filename);
 112
 113
 114 int stage_collision(mobile* m, zone* z, int si, int sj);
 115 int box_collision(struct box* B1, struct box* B2);
 116
 117 void update_mobile_motion(mobile* m);
 118
 119
 120 void game_setup();