]> git.lizzy.rs Git - nothing.git/blobdiff - src/main.c
TODO(#456)
[nothing.git] / src / main.c
index 28fc97448751b21db369b93be604c92fdc6f4dc5..46181504ba9572d044ef873ab7bc38ec14c43df8 100644 (file)
-#include <stdio.h>
-#include <stdlib.h>
 #include <SDL2/SDL.h>
+#include <SDL2/SDL_mixer.h>
 
-#include "./player.h"
-#include "./platforms.h"
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "game.h"
+#include "game/level/platforms.h"
+#include "game/level/player.h"
+#include "game/sound_samples.h"
+#include "game/sprite_font.h"
+#include "math/point.h"
+#include "sdl/renderer.h"
+#include "system/error.h"
+#include "system/lt.h"
+#include "system/lt/lt_adapters.h"
 
 #define SCREEN_WIDTH 800
 #define SCREEN_HEIGHT 600
-#define GAME_FPS 60
-#define LEVEL_FILE_NAME "./levels/platforms.txt"
+
+static void print_usage(FILE *stream)
+{
+    fprintf(stream, "Usage: nothing [--fps <fps>] <level-file>\n");
+}
 
 int main(int argc, char *argv[])
 {
-    (void) argc;                /* unused */
-    (void) argv;                /* unused */
+    srand((unsigned int) time(NULL));
 
-    int exit_code = 0;
+    Lt *const lt = create_lt();
+
+    char *level_filename = NULL;
+    int fps = 30;
+
+    for (int i = 1; i < argc;) {
+        if (strcmp(argv[i], "--fps") == 0) {
+            if (i + 1 < argc) {
+                if (sscanf(argv[i + 1], "%d", &fps) == 0) {
+                    fprintf(stderr, "Cannot parse FPS: %s is not a number\n", argv[i + 1]);
+                    print_usage(stderr);
+                    RETURN_LT(lt, -1);
+                }
+                i += 2;
+            } else {
+                fprintf(stderr, "Value of FPS is not provided\n");
+                print_usage(stderr);
+                RETURN_LT(lt, -1);
+            }
+        } else {
+            level_filename = argv[i];
+            i++;
+        }
+    }
+
+    if (level_filename == NULL) {
+        fprintf(stderr, "Path to level file is not provided\n");
+        print_usage(stderr);
+        RETURN_LT(lt, -1);
+    }
 
     if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
-        fprintf(stderr, "Could not initialize SDL: %s", SDL_GetError());
-        exit_code = -1;
-        goto sdl_init_fail;
+        print_error_msg(ERROR_TYPE_SDL2, "Could not initialize SDL");
+        RETURN_LT(lt, -1);
     }
+    PUSH_LT(lt, 42, SDL_Quit_lt);
+
+    SDL_ShowCursor(SDL_DISABLE);
 
-    SDL_Window *const window = SDL_CreateWindow("Nothing",
-                                                100, 100,
-                                                SCREEN_WIDTH, SCREEN_HEIGHT,
-                                                SDL_WINDOW_SHOWN);
+    SDL_Window *const window = PUSH_LT(
+        lt,
+        SDL_CreateWindow(
+            "Nothing",
+            100, 100,
+            SCREEN_WIDTH, SCREEN_HEIGHT,
+            SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE),
+        SDL_DestroyWindow);
 
     if (window == NULL) {
-        fprintf(stderr, "Could not create SDL window: %s", SDL_GetError());
-        exit_code = -1;
-        goto sdl_create_window_fail;
+        print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL window");
+        RETURN_LT(lt, -1);
     }
 
-    SDL_Renderer *const renderer = SDL_CreateRenderer(window, -1,
-                                                      SDL_RENDERER_ACCELERATED |
-                                                      SDL_RENDERER_PRESENTVSYNC);
+    SDL_Renderer *const renderer = PUSH_LT(
+        lt,
+        SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC),
+        SDL_DestroyRenderer);
     if (renderer == NULL) {
-        fprintf(stderr, "Could not create SDL renderer: %s", SDL_GetError());
-        exit_code = -1;
-        goto sdl_create_renderer_fail;
+        print_error_msg(ERROR_TYPE_SDL2, "Could not create SDL renderer");
+        RETURN_LT(lt, -1);
+    }
+    if (SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND) < 0) {
+        print_error_msg(ERROR_TYPE_SDL2, "Could not set up blending mode for the renderer");
+        RETURN_LT(lt, -1);
     }
 
     SDL_Joystick *the_stick_of_joy = NULL;
 
     if (SDL_NumJoysticks() > 0) {
-        the_stick_of_joy = SDL_JoystickOpen(0);
+        the_stick_of_joy = PUSH_LT(lt, SDL_JoystickOpen(0), SDL_JoystickClose);
 
         if (the_stick_of_joy == NULL) {
-            fprintf(stderr, "Could not open 0th Stick of the Joy: %s\n", SDL_GetError());
-            exit_code = -1;
-            goto sdl_joystick_open_fail;
+            print_error_msg(ERROR_TYPE_SDL2, "Could not open 0th Stick of the Joy: %s\n");
+            RETURN_LT(lt, -1);
         }
 
         printf("Opened Joystick 0\n");
@@ -65,107 +116,83 @@ int main(int argc, char *argv[])
         fprintf(stderr, "[WARNING] Could not find any Sticks of the Joy\n");
     }
 
-    // ------------------------------
-
-    player_t *const player = create_player(100.0f, 0.0f);
-    if (player == NULL) {
-        perror("Could not create player");
-        exit_code = -1;
-        goto create_player_fail;
+    if (Mix_OpenAudio(
+            MIX_DEFAULT_FREQUENCY,
+            MIX_DEFAULT_FORMAT,
+            2,
+            1024) < 0) {
+        print_error_msg(ERROR_TYPE_SDL2_MIXER, "Could not initialize the audio\n");
+        RETURN_LT(lt, -1);
     }
+    PUSH_LT(lt, 42, Mix_CloseAudio_lt);
 
-    platforms_t *platforms = load_platforms_from_file(LEVEL_FILE_NAME);
-    if (platforms == NULL) {
-        perror("Could not read platforms from " LEVEL_FILE_NAME);
-        exit_code = -1;
-        goto create_platforms_fail;
-    }
+    // ------------------------------
 
-    camera_t *const camera = create_camera(vec(0.0f, 0.0f));
-    if (camera == NULL) {
-        perror("Could not create camera");
-        exit_code = -1;
-        goto create_camera_fail;
+    const char * sound_sample_files[] = {
+        "./sounds/nothing.wav",
+        "./sounds/something.wav"
+    };
+    const size_t sound_sample_files_count = sizeof(sound_sample_files) / sizeof(char*);
+
+    Game *const game = PUSH_LT(
+        lt,
+        create_game(
+            level_filename,
+            sound_sample_files,
+            sound_sample_files_count,
+            renderer),
+        destroy_game);
+    if (game == NULL) {
+        print_current_error_msg("Could not create the game object");
+        RETURN_LT(lt, -1);
     }
 
-    int quit = 0;
-
     const Uint8 *const keyboard_state = SDL_GetKeyboardState(NULL);
-    const Uint32 delay_ms = (Uint32) roundf(1000.0f / GAME_FPS);
-    SDL_Event e;
-    while (!quit) {
-        while (SDL_PollEvent(&e)) {
-            switch (e.type) {
-            case SDL_QUIT:
-                quit = 1;
-                break;
-
-            case SDL_KEYDOWN:
-                switch (e.key.keysym.sym) {
-                case SDLK_SPACE:
-                    player_jump(player);
-                    break;
-
-                case SDLK_q:
-                    printf("Reloading the level from '%s'...", LEVEL_FILE_NAME);
-
-                    destroy_platforms(platforms);
-                    platforms = load_platforms_from_file(LEVEL_FILE_NAME);
-
-                    if (platforms == NULL) {
-                        exit_code = -1;
-                        goto reload_platforms_failed;
-                    }
-                    break;
-                }
-                break;
 
-            case SDL_JOYBUTTONDOWN:
-                if (e.jbutton.button == 1) {
-                    player_jump(player);
-                }
-                break;
+    SDL_StartTextInput();
+    SDL_Event e;
+    const int64_t delta_time = (int64_t) roundf(1000.0f / 60.0f);
+    int64_t render_timer = (int64_t) roundf(1000.0f / (float) fps);
+    while (!game_over_check(game)) {
+        const int64_t begin_frame_time = (int64_t) SDL_GetTicks();
+
+        while (!game_over_check(game) && SDL_PollEvent(&e)) {
+            if (game_event(game, &e) < 0) {
+                print_current_error_msg("Failed handling event");
+                RETURN_LT(lt, -1);
             }
+        }
 
+        if (game_input(game, keyboard_state, the_stick_of_joy) < 0) {
+            print_current_error_msg("Failed handling input");
+            RETURN_LT(lt, -1);
         }
 
-        if (keyboard_state[SDL_SCANCODE_A]) {
-            player_move_left(player);
-        } else if (keyboard_state[SDL_SCANCODE_D]) {
-            player_move_right(player);
-        } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) < 0) {
-            player_move_left(player);
-        } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) > 0) {
-            player_move_right(player);
-        } else {
-            player_stop(player);
+        if (game_update(game, (float) delta_time * 0.001f) < 0) {
+            print_current_error_msg("Failed handling updating");
+            RETURN_LT(lt, -1);
         }
 
-        update_player(player, platforms, delay_ms);
-        player_focus_camera(player, camera);
+        if (game_sound(game) < 0) {
+            print_current_error_msg("Failed handling the sound");
+            RETURN_LT(lt, -1);
+        }
+
+        render_timer -= delta_time;
+        if (render_timer <= 0) {
+            if (game_render(game) < 0) {
+                print_current_error_msg("Failed rendering the game");
+                RETURN_LT(lt, -1);
+            }
+            SDL_RenderPresent(renderer);
+            render_timer = (int64_t) roundf(1000.0f / (float) fps);
+        }
 
-        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
-        SDL_RenderClear(renderer);
-        render_player(player, renderer, camera);
-        render_platforms(platforms, renderer, camera);
-        SDL_RenderPresent(renderer);
-        SDL_Delay(delay_ms);
+        const int64_t end_frame_time = (int64_t) SDL_GetTicks();
+#define max_int64(a, b) (a > b ? a : b)
+        SDL_Delay((unsigned int) max_int64(10, delta_time - (end_frame_time - begin_frame_time)));
+#undef max_int64
     }
 
-reload_platforms_failed:
-    destroy_camera(camera);
-create_camera_fail:
-    if (platforms) { destroy_platforms(platforms); }
-create_platforms_fail:
-    destroy_player(player);
-create_player_fail:
-    if (the_stick_of_joy) { SDL_JoystickClose(the_stick_of_joy); }
-sdl_joystick_open_fail:
-    SDL_DestroyRenderer(renderer);
-sdl_create_renderer_fail:
-    SDL_DestroyWindow(window);
-sdl_create_window_fail:
-    SDL_Quit();
-sdl_init_fail:
-    return exit_code;
+    RETURN_LT(lt, 0);
 }