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 #include "./point.h"
  14 #include "./sound_sample.h"
  15 #include "./sound_medium.h"
  16
  17 #define SCREEN_WIDTH 800
  18 #define SCREEN_HEIGHT 600
  19 #define GAME_FPS 60
  20
  21 /* LT module adapter for Mix_CloseAudio */
  22 static void Mix_CloseAudio_lt(void* ignored)
  23 {
  24     (void) ignored;
  25     Mix_CloseAudio();
  26 }
  27
  28 /* LT module adapter for SDL_Quit */
  29 static void SDL_Quit_lt(void* ignored)
  30 {
  31     (void) ignored;
  32     SDL_Quit();
  33 }
  34
  35 static void print_usage(FILE *stream)
  36 {
  37     fprintf(stream, "Usage: nothing <level-file>\n");
  38 }
  39
  40 int main(int argc, char *argv[])
  41 {
  42     srand((unsigned int) time(NULL));
  43
  44     lt_t *const lt = create_lt();
  45
  46     if (argc < 2) {
  47         print_usage(stderr);
  48         RETURN_LT(lt, -1);
  49     }
  50
  51     if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
  52         print_error_msg(ERROR_TYPE_SDL2, "Could not initialize SDL");
  53         RETURN_LT(lt, -1);
  54     }
  55     PUSH_LT(lt, 42, SDL_Quit_lt);
  56
  57     SDL_Window *const window = PUSH_LT(
  58         lt,
  59         SDL_CreateWindow(
  60             "Nothing",
  61             100, 100,
  62             SCREEN_WIDTH, SCREEN_HEIGHT,
  63             SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE),
  64         SDL_DestroyWindow);
  65
  66     if (window == NULL) {
  67         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL window");
  68         RETURN_LT(lt, -1);
  69     }
  70
  71     SDL_Renderer *const renderer = PUSH_LT(
  72         lt,
  73         SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC),
  74         SDL_DestroyRenderer);
  75     if (renderer == NULL) {
  76         print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL renderer");
  77         RETURN_LT(lt, -1);
  78     }
  79     if (SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND) < 0) {
  80         print_error_msg(ERROR_TYPE_SDL2, "Could not set up blending mode for the renderer");
  81         RETURN_LT(lt, -1);
  82     }
  83
  84     SDL_Joystick *the_stick_of_joy = NULL;
  85
  86     if (SDL_NumJoysticks() > 0) {
  87         the_stick_of_joy = PUSH_LT(lt, SDL_JoystickOpen(0), SDL_JoystickClose);
  88
  89         if (the_stick_of_joy == NULL) {
  90             print_error_msg(ERROR_TYPE_SDL2, "Could not open 0th Stick of the Joy: %s\n");
  91             RETURN_LT(lt, -1);
  92         }
  93
  94         printf("Opened Joystick 0\n");
  95         printf("Name: %s\n", SDL_JoystickNameForIndex(0));
  96         printf("Number of Axes: %d\n", SDL_JoystickNumAxes(the_stick_of_joy));
  97         printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(the_stick_of_joy));
  98         printf("Number of Balls: %d\n", SDL_JoystickNumBalls(the_stick_of_joy));
  99
 100         SDL_JoystickEventState(SDL_ENABLE);
 101     } else {
 102         fprintf(stderr, "[WARNING] Could not find any Sticks of the Joy\n");
 103     }
 104
 105     if (Mix_OpenAudio(
 106             MIX_DEFAULT_FREQUENCY,
 107             MIX_DEFAULT_FORMAT,
 108             2,
 109             1024) < 0) {
 110         print_error_msg(ERROR_TYPE_SDL2_MIXER, "Could not initialize the audio\n");
 111         RETURN_LT(lt, -1);
 112     }
 113     PUSH_LT(lt, 42, Mix_CloseAudio_lt);
 114
 115     Mix_AllocateChannels(16);
 116
 117     Mix_Chunk * sound_samples[] = {
 118         PUSH_LT(lt, Mix_LoadWAV("./sounds/nothing.wav"), Mix_FreeChunk),
 119         PUSH_LT(lt, Mix_LoadWAV("./sounds/something.wav"), Mix_FreeChunk)
 120     };
 121     const size_t sound_samples_count = sizeof(sound_samples) / sizeof(Mix_Chunk*);
 122
 123     sound_medium_t *sound_medium =
 124         PUSH_LT(lt, create_sound_medium(sound_samples, sound_samples_count), destroy_sound_medium);
 125
 126     sound_medium_play_sound(sound_medium, 1, vec(0.0, 0.0));
 127
 128     // ------------------------------
 129
 130     char *sounds_folder = PUSH_LT(lt, base_path_folder("sounds"), free);
 131     if (sounds_folder == NULL) {
 132         print_current_error_msg("Could not get the sounds folder");
 133         RETURN_LT(lt, -1);
 134     }
 135
 136     game_t *const game = PUSH_LT(lt, create_game(argv[1]), destroy_game);
 137     if (game == NULL) {
 138         print_current_error_msg("Could not create the game object");
 139         RETURN_LT(lt, -1);
 140     }
 141
 142     const Uint8 *const keyboard_state = SDL_GetKeyboardState(NULL);
 143     const Uint32 delay_ms = (Uint32) roundf(1000.0f / GAME_FPS);
 144     SDL_Event e;
 145     while (!game_over_check(game)) {
 146         while (!game_over_check(game) && SDL_PollEvent(&e)) {
 147             if (game_event(game, &e) < 0) {
 148                 print_current_error_msg("Failed handling event");
 149                 RETURN_LT(lt, -1);
 150             }
 151         }
 152
 153         if (game_input(game, keyboard_state, the_stick_of_joy) < 0) {
 154             print_current_error_msg("Failed handling input");
 155             RETURN_LT(lt, -1);
 156         }
 157
 158         if (game_update(game, delay_ms) < 0) {
 159             print_current_error_msg("Failed handling updating");
 160             RETURN_LT(lt, -1);
 161         }
 162
 163         if (game_render(game, renderer) < 0) {
 164             print_current_error_msg("Failed rendering the game");
 165             RETURN_LT(lt, -1);
 166         }
 167     }
 168
 169     RETURN_LT(lt, 0);
 170 }