backend.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 enum {
  24 ESCAPE_KEY,
  25 PAUSE_KEY,
  26
  27 LEFT_KEY,
  28 RIGHT_KEY,
  29 UP_KEY,
  30 DOWN_KEY,
  31
  32 FIRE_KEY,
  33 JUMP_KEY,
  34 INVENTORY_KEY,
  35 SPECIAL_KEY,
  36
  37 L_KEY,
  38 R_KEY,
  39 START_KEY,
  40 SELECT_KEY
  41 };
  42
  43 enum{
  44 FIRE_BUTTON,
  45 JUMP_BUTTON,
  46 INVENTORY_BUTTON,
  47 SPECIAL_BUTTON,
  48
  49 L_BUTTON,
  50 R_BUTTON,
  51 START_BUTTON,
  52 SELECT_BUTTON
  53 };
  54
  55 enum{
  56 KEYUP,
  57 KEYDOWN,
  58 JOYMOVEX,
  59 JOYMOVEY,
  60 JOYPRESS,
  61 JOYRELEASE
  62 };
  63
  64 struct handler {
  65   void (*keydown)(int key);
  66   void (*keyup)(int key);
  67   void (*joymovex)(int joy, int x);
  68   void (*joymovey)(int joy, int y);
  69   void (*joypress)(int joy, int button);
  70   void (*joyrelease)(int joy, int button);
  71   //void (*keyentry)(utf32 u);
  72 };
  73
  74 #define VERSION_MAJOR 0
  75 #define VERSION_MINOR 0
  76
  77 #define JOY_MAX 32767
  78 #define JOY_MIN -32768
  79
  80 #define MAX_PLAYERS 6
  81
  82 #define dt 10
  83 #define DELAY_AMOUNT 1
  84
  85 #define PI 3.14159265359
  86 #define PI2 2*PI
  87
  88 #define SCREEN_W 320
  89 #define SCREEN_H 240
  90
  91 #define MAX_GFX 256
  92
  93
  94 #define COLOR_KEY 0x000000
  95
  96 #define SAMPLE_RATE 44100
  97 #define BUFFER_SIZE 1024
  98
  99 #define RANDOM_SEED 57
 100
 101
 102 void backend_init(int argc, char* argv[]);
 103 void backend_quit();
 104
 105 void input(); /* pump event system */
 106 void draw();  /* draw all active graphics */
 107
 108 int since(); /* ms since last time since() was called */
 109 void delay(int ms); /* wait ms ms */
 110 void end_program();
 111 int ended();
 112
 113 void update_video();
 114 void clear_video();
 115
 116 /* input */
 117 int keynum(int name); /* get key number for key name */
 118 int butnum(int joy, int name); /* get button number for button name */
 119 void control(int type, int par1, int par2); /* automatic control */
 120 void enable_alphanum(int yn);
 121 void set_handler(struct handler h);
 122
 123 /* gfx control */
 124 int load_gfx(char* filename);
 125 void draw_gfx(int gfxid, int x, int y, int X, int Y, int W, int H);
 126 void draw_gfx_raw(int gfxid, int x, int y, int X, int Y, int W, int H);
 127 int gfx_width(int gfxid);
 128 int gfx_height(int gfxid);
 129
 130 /* sound control */
 131 int load_sound(char* filename);
 132 void play_sound(int id);
 133 int load_music(char* filename);
 134 int play_music(int id);
 135
 136 void fps_update();
 137 void fps_draw();
 138 int get_fps();