kernel.c

   1 /*
   2    Cantaveria - action adventure platform game
   3    Copyright (C) 2009 2010 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    evanrinehart@gmail.com
  23 */
  24 #include <stdlib.h>
  25
  26 #include <list.h>
  27 #include <root.h>
  28 #include <video.h>
  29 #include <audio.h>
  30 #include <input.h>
  31
  32 #include <loader.h>
  33 #include <graphics.h>
  34 #include <text.h>
  35
  36 #include <util.h>
  37
  38 #include <kernel.h>
  39 #include <transfer.h>
  40
  41 int game_over = false;
  42 int dt = QUANTUM;
  43
  44 static struct {
  45         void (*update)();
  46         void (*draw)();
  47         void (*press)(input in);
  48         void (*release)(input in);
  49 } handler;
  50
  51
  52 static void terminate(){
  53         loader_quit();
  54         audio_quit();
  55         video_quit();
  56 };
  57
  58 static void press(input in){ handler.press(in); }
  59 static void release(input in){ handler.release(in); }
  60
  61 void dispatch_error(const char* msg){
  62         error_msg("kernel.c dispatch_input: %s\n", msg);
  63 }
  64
  65 static void dispatch_input(){
  66         input in = get_input();
  67         while(in.type != NO_INPUT){
  68                 switch(in.type){
  69                         case BUTTON_PRESS: press(in); break;
  70                         case BUTTON_RELEASE: release(in); break;
  71                         case END_OF_PROGRAM: game_is_over(); break;
  72                         case SKIP_INPUT: dispatch_error("SKIP_INPUT is not supposed to come from generator"); break;
  73                         case INVALID_INPUT: dispatch_error("INVALID_INPUT produced in generator"); break;
  74                         case NO_INPUT: dispatch_error("NO_INPUT is impossible here"); break;
  75                 }
  76                 in = get_input();
  77         }
  78 }
  79
  80 void initialize(int argc, char* argv[]){
  81         video_init(argc, argv);
  82         audio_init();
  83         input_init("FIXME");
  84         loader_init();
  85         graphics_init();
  86         text_init();
  87         rand_reset(RANDOM_SEED);
  88         atexit(terminate);
  89
  90         setup_splash();
  91 }
  92
  93 void update(){
  94         dispatch_input();
  95         fps_update();
  96 //      console_clear();
  97         animate_sprites();
  98         handler.update();
  99 }
 100
 101 void draw(){
 102         handler.draw();
 103         draw_final();
 104 }
 105
 106 void game_is_over(){
 107         game_over = true;
 108 }
 109
 110 int is_game_over(){
 111         return game_over;
 112 }
 113
 114 void set_handler(
 115         void (*update)(),
 116         void (*draw)(),
 117         void (*press)(input in),
 118         void (*release)(input in)
 119 ){
 120         handler.update = update;
 121         handler.draw = draw;
 122         handler.press = press;
 123         handler.release = release;
 124 }