src/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <time.h>
   4 #include <SDL2/SDL.h>
   5 #include <SDL2/SDL_mixer.h>
   6
   7 #include "./player.h"
   8 #include "./platforms.h"
   9 #include "./error.h"
  10 #include "./game.h"
  11 #include "./lt.h"
  12 #include "./path.h"
  13
  14 #define SCREEN_WIDTH 800
  15 #define SCREEN_HEIGHT 600
  16 #define GAME_FPS 60
  17
  18 /* LT module adapter for SDL_Quit */
  19 static void SDL_Quit_lt(void* ignored)
  20 {
  21     (void) ignored;
  22     SDL_Quit();
  23 }
  24
  25 static void print_usage(FILE *stream)
  26 {
  27     fprintf(stream, "Usage: nothing <level-file>\n");
  28 }
  29
  30 int main(int argc, char *argv[])
  31 {
  32     srand((unsigned int) time(NULL));
  33
  34     lt_t *const lt = create_lt();
  35
  36     if (argc < 2) {
  37         print_usage(stderr);
  38         RETURN_LT(lt, -1);
  39     }
  40
  41     if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
  42         print_error_msg(ERROR_TYPE_SDL2, "Could not initialize SDL");
  43         RETURN_LT(lt, -1);
  44     }
  45     PUSH_LT(lt, 42, SDL_Quit_lt);
  46
  47     SDL_Window *const window = PUSH_LT(
  48         lt,
  49         SDL_CreateWindow(
  50             "Nothing",
  51             100, 100,
  52             SCREEN_WIDTH, SCREEN_HEIGHT,
  53             SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE),
  54         SDL_DestroyWindow);
  55
  56     if (window == NULL) {
  57         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL window");
  58         RETURN_LT(lt, -1);
  59     }
  60
  61     SDL_Renderer *const renderer = PUSH_LT(
  62         lt,
  63         SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC),
  64         SDL_DestroyRenderer);
  65     if (renderer == NULL) {
  66         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL renderer");
  67         RETURN_LT(lt, -1);
  68     }
  69     if (SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND) < 0) {
  70         print_error_msg(ERROR_TYPE_SDL2, "Could not set up blending mode for the renderer");
  71         RETURN_LT(lt, -1);
  72     }
  73
  74     SDL_Joystick *the_stick_of_joy = NULL;
  75
  76     if (SDL_NumJoysticks() > 0) {
  77         the_stick_of_joy = PUSH_LT(lt, SDL_JoystickOpen(0), SDL_JoystickClose);
  78
  79         if (the_stick_of_joy == NULL) {
  80             print_error_msg(ERROR_TYPE_SDL2, "Could not open 0th Stick of the Joy: %s\n");
  81             RETURN_LT(lt, -1);
  82         }
  83
  84         printf("Opened Joystick 0\n");
  85         printf("Name: %s\n", SDL_JoystickNameForIndex(0));
  86         printf("Number of Axes: %d\n", SDL_JoystickNumAxes(the_stick_of_joy));
  87         printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(the_stick_of_joy));
  88         printf("Number of Balls: %d\n", SDL_JoystickNumBalls(the_stick_of_joy));
  89
  90         SDL_JoystickEventState(SDL_ENABLE);
  91     } else {
  92         fprintf(stderr, "[WARNING] Could not find any Sticks of the Joy\n");
  93     }
  94
  95     // ------------------------------
  96
  97     char *sounds_folder = PUSH_LT(lt, base_path_folder("sounds"), free);
  98     if (sounds_folder == NULL) {
  99         RETURN_LT(lt, -1);
 100     }
 101
 102     game_t *const game = PUSH_LT(lt, create_game(argv[1], sounds_folder), destroy_game);
 103     if (game == NULL) {
 104         print_current_error_msg("Could not create the game object");
 105         RETURN_LT(lt, -1);
 106     }
 107
 108     const Uint8 *const keyboard_state = SDL_GetKeyboardState(NULL);
 109     const Uint32 delay_ms = (Uint32) roundf(1000.0f / GAME_FPS);
 110     SDL_Event e;
 111     while (!game_over_check(game)) {
 112         while (!game_over_check(game) && SDL_PollEvent(&e)) {
 113             if (game_event(game, &e) < 0) {
 114                 print_current_error_msg("Failed handling event");
 115                 RETURN_LT(lt, -1);
 116             }
 117         }
 118
 119         if (game_input(game, keyboard_state, the_stick_of_joy) < 0) {
 120             print_current_error_msg("Failed handling input");
 121             RETURN_LT(lt, -1);
 122         }
 123
 124         if (game_update(game, delay_ms) < 0) {
 125             print_current_error_msg("Failed handling updating");
 126             RETURN_LT(lt, -1);
 127         }
 128
 129         if (game_render(game, renderer) < 0) {
 130             print_current_error_msg("Failed rendering the game");
 131             RETURN_LT(lt, -1);
 132         }
 133     }
 134
 135     RETURN_LT(lt, 0);
 136 }