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 #include <stage.h>
  36
  37 #include <util.h>
  38
  39 #include <kernel.h>
  40 #include <transfer.h>
  41 #include <gameover.h>
  42
  43 int dt = QUANTUM;
  44
  45 static struct {
  46         void (*update)();
  47         void (*draw)();
  48         void (*press)(input in);
  49         void (*release)(input in);
  50 } handler;
  51
  52
  53 static void terminate(){
  54         loader_quit();
  55         audio_quit();
  56         video_quit();
  57 }
  58
  59 static void press(input in){ handler.press(in); }
  60 static void release(input in){ handler.release(in); }
  61
  62 void dispatch_error(const char* msg){
  63         error_msg("kernel.c dispatch_input: %s\n", msg);
  64 }
  65
  66 static void dispatch_input(){
  67         input in = get_input();
  68         while(in.type != NO_INPUT){
  69                 switch(in.type){
  70                         case BUTTON_PRESS: press(in); break;
  71                         case BUTTON_RELEASE: release(in); break;
  72                         case END_OF_PROGRAM: game_is_over(); break;
  73                         case SKIP_INPUT: dispatch_error("SKIP_INPUT is not supposed to come from generator"); break;
  74                         case INVALID_INPUT: dispatch_error("INVALID_INPUT produced in generator"); break;
  75                         case NO_INPUT: dispatch_error("NO_INPUT is impossible here"); break;
  76                 }
  77                 in = get_input();
  78         }
  79 }
  80
  81 void initialize(int argc, char* argv[]){
  82         video_init(argc, argv);
  83         audio_init();
  84         input_init("FIXME");
  85         loader_init();
  86         graphics_init();
  87         text_init();
  88         stage_init();
  89         rand_reset(RANDOM_SEED);
  90         atexit(terminate);
  91
  92         setup_splash();
  93 }
  94
  95 void update(){
  96         dispatch_input();
  97         fps_update();
  98 //      console_clear();
  99         animate_sprites();
 100         handler.update();
 101 }
 102
 103 void draw(){
 104         handler.draw();
 105         draw_final();
 106 }
 107
 108 void set_handler(
 109         void (*update)(),
 110         void (*draw)(),
 111         void (*press)(input in),
 112         void (*release)(input in)
 113 ){
 114         handler.update = update;
 115         handler.draw = draw;
 116         handler.press = press;
 117         handler.release = release;
 118 }