src/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <SDL2/SDL.h>
   4
   5 #include "./player.h"
   6 #include "./platforms.h"
   7 #include "./error.h"
   8 #include "./game.h"
   9 #include "./lt.h"
  10
  11 #define SCREEN_WIDTH 800
  12 #define SCREEN_HEIGHT 600
  13 #define GAME_FPS 60
  14 #define LEVEL_FILE_NAME "./levels/platforms.txt"
  15
  16 /* LT module adapter for SDL_Quit */
  17 static void SDL_Quit_lt(void* ignored)
  18 {
  19     (void) ignored;
  20     SDL_Quit();
  21 }
  22
  23 int main(int argc, char *argv[])
  24 {
  25     (void) argc;                /* unused */
  26     (void) argv;                /* unused */
  27
  28     lt_t *const lt = create_lt();
  29
  30     if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
  31         print_error_msg(ERROR_TYPE_SDL2, "Could not initialize SDL");
  32         LT_RETURN(lt, -1);
  33     }
  34     LT_PUSH(lt, 42, SDL_Quit_lt);
  35
  36     SDL_Window *const window = LT_PUSH(
  37         lt,
  38         SDL_CreateWindow("Nothing", 100, 100, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN),
  39         SDL_DestroyWindow);
  40
  41     if (window == NULL) {
  42         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL window");
  43         LT_RETURN(lt, -1);
  44     }
  45
  46     SDL_Renderer *const renderer = LT_PUSH(
  47         lt,
  48         SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC),
  49         SDL_DestroyRenderer);
  50     if (renderer == NULL) {
  51         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL renderer");
  52         LT_RETURN(lt, -1);
  53     }
  54
  55     SDL_Joystick *the_stick_of_joy = NULL;
  56
  57     if (SDL_NumJoysticks() > 0) {
  58         the_stick_of_joy = LT_PUSH(lt, SDL_JoystickOpen(0), SDL_JoystickClose);
  59
  60         if (the_stick_of_joy == NULL) {
  61             print_error_msg(ERROR_TYPE_SDL2, "Could not open 0th Stick of the Joy: %s\n");
  62             LT_RETURN(lt, -1);
  63         }
  64
  65         printf("Opened Joystick 0\n");
  66         printf("Name: %s\n", SDL_JoystickNameForIndex(0));
  67         printf("Number of Axes: %d\n", SDL_JoystickNumAxes(the_stick_of_joy));
  68         printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(the_stick_of_joy));
  69         printf("Number of Balls: %d\n", SDL_JoystickNumBalls(the_stick_of_joy));
  70
  71         SDL_JoystickEventState(SDL_ENABLE);
  72     } else {
  73         fprintf(stderr, "[WARNING] Could not find any Sticks of the Joy\n");
  74     }
  75
  76     // ------------------------------
  77
  78     game_t *const game = LT_PUSH(lt, create_game(LEVEL_FILE_NAME), destroy_game);
  79     if (game == NULL) {
  80         print_current_error_msg("Could not create the game object");
  81         LT_RETURN(lt, -1);
  82     }
  83
  84     const Uint8 *const keyboard_state = SDL_GetKeyboardState(NULL);
  85     const Uint32 delay_ms = (Uint32) roundf(1000.0f / GAME_FPS);
  86     SDL_Event e;
  87     while (!is_game_over(game)) {
  88         while (!is_game_over(game) && SDL_PollEvent(&e)) {
  89             if (game_event(game, &e) < 0) {
  90                 print_current_error_msg("Failed handling event");
  91                 LT_RETURN(lt, -1);
  92             }
  93         }
  94
  95         if (game_input(game, keyboard_state, the_stick_of_joy) < 0) {
  96             print_current_error_msg("Failed handling input");
  97             LT_RETURN(lt, -1);
  98         }
  99
 100         if (game_update(game, delay_ms) < 0) {
 101             print_current_error_msg("Failed handling updating");
 102             LT_RETURN(lt, -1);
 103         }
 104
 105         if (game_render(game, renderer) < 0) {
 106             print_current_error_msg("Failed rendering the game");
 107             LT_RETURN(lt, -1);
 108         }
 109     }
 110
 111     LT_RETURN(lt, 0);
 112 }