src/game/level.c

   1 #include <assert.h>
   2 #include <SDL2/SDL.h>
   3
   4 #include "./lt.h"
   5 #include "./game/level/player.h"
   6 #include "./game/level/platforms.h"
   7 #include "./game/level.h"
   8 #include "./game/level/camera.h"
   9 #include "./error.h"
  10 #include "./goals.h"
  11 #include "./lava.h"
  12
  13 /* TODO(#118): Level doesn't play the Nothing and Something sounds when the goal get into view */
  14
  15 struct level_t
  16 {
  17     lt_t *lt;
  18     player_t *player;
  19     platforms_t *platforms;
  20     camera_t *camera;
  21     goals_t *goals;
  22     lava_t *lava;
  23     color_t background_color;
  24 };
  25
  26 level_t *create_level_from_file(const char *file_name)
  27 {
  28     assert(file_name);
  29
  30     lt_t *const lt = create_lt();
  31     if (lt == NULL) {
  32         return NULL;
  33     }
  34
  35     level_t *const level = PUSH_LT(lt, malloc(sizeof(level_t)), free);
  36     if (level == NULL) {
  37         throw_error(ERROR_TYPE_LIBC);
  38         RETURN_LT(lt, NULL);
  39     }
  40
  41     FILE *level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose);
  42     if (level_file == NULL) {
  43         throw_error(ERROR_TYPE_LIBC);
  44         RETURN_LT(lt, NULL);
  45     }
  46
  47     char color[7];
  48     if (fscanf(level_file, "%6s", color) == EOF) {
  49         throw_error(ERROR_TYPE_LIBC);
  50         RETURN_LT(lt, NULL);
  51     }
  52     level->background_color = color_from_hexstr(color);
  53
  54     level->player = PUSH_LT(lt, create_player_from_stream(level_file), destroy_player);
  55     if (level->player == NULL) {
  56         RETURN_LT(lt, NULL);
  57     }
  58
  59     level->platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  60     if (level->platforms == NULL) {
  61         RETURN_LT(lt, NULL);
  62     }
  63
  64     level->goals = PUSH_LT(lt, create_goals_from_stream(level_file), destroy_goals);
  65     if (level->goals == NULL) {
  66         RETURN_LT(lt, NULL);
  67     }
  68
  69     level->lava = PUSH_LT(lt, create_lava_from_stream(level_file), destroy_lava);
  70     if (level->lava == NULL) {
  71         RETURN_LT(lt, NULL);
  72     }
  73
  74     level->camera = PUSH_LT(lt, create_camera(vec(0.0f, 0.0f)), destroy_camera);
  75     if (level->camera == NULL) {
  76         RETURN_LT(lt, NULL);
  77     }
  78
  79     level->lt = lt;
  80
  81     fclose(RELEASE_LT(lt, level_file));
  82
  83     return level;
  84 }
  85
  86 void destroy_level(level_t *level)
  87 {
  88     assert(level);
  89     RETURN_LT0(level->lt);
  90 }
  91
  92 int level_render(const level_t *level, SDL_Renderer *renderer)
  93 {
  94     assert(level);
  95     assert(renderer);
  96
  97     if (camera_clear_background(level->camera, renderer, level->background_color) < 0) {
  98         return -1;
  99     }
 100
 101     if (player_render(level->player, renderer, level->camera) < 0) {
 102         return -1;
 103     }
 104
 105     if (lava_render(level->lava, renderer, level->camera) < 0) {
 106         return -1;
 107     }
 108
 109     if (platforms_render(level->platforms, renderer, level->camera) < 0) {
 110         return -1;
 111     }
 112
 113     if (goals_render(level->goals, renderer, level->camera) < 0) {
 114         return -1;
 115     }
 116
 117     /* TODO(#157): goals_cue is not supposed to be invoked in level_render
 118      *
 119      * But I simply couldn't find a better place for it.
 120      */
 121     goals_cue(level->goals, renderer, level->camera);
 122
 123     return 0;
 124 }
 125
 126 int level_update(level_t *level, float delta_time)
 127 {
 128     assert(level);
 129     assert(delta_time > 0);
 130
 131     player_update(level->player, level->platforms, delta_time);
 132     player_focus_camera(level->player, level->camera);
 133     player_hide_goals(level->player, level->goals);
 134     player_die_from_lava(level->player, level->lava);
 135
 136     goals_update(level->goals, delta_time);
 137     goals_checkpoint(level->goals, level->player);
 138     lava_update(level->lava, delta_time);
 139
 140     return 0;
 141 }
 142
 143 int level_event(level_t *level, const SDL_Event *event)
 144 {
 145     assert(level);
 146     assert(event);
 147
 148     switch (event->type) {
 149     case SDL_KEYDOWN:
 150         switch (event->key.keysym.sym) {
 151         case SDLK_SPACE:
 152             player_jump(level->player);
 153             break;
 154         }
 155         break;
 156
 157     case SDL_JOYBUTTONDOWN:
 158         if (event->jbutton.button == 1) {
 159             player_jump(level->player);
 160         }
 161         break;
 162     }
 163
 164     return 0;
 165 }
 166
 167 int level_input(level_t *level,
 168                 const Uint8 *const keyboard_state,
 169                 SDL_Joystick *the_stick_of_joy)
 170 {
 171     assert(level);
 172     assert(keyboard_state);
 173     (void) the_stick_of_joy;
 174
 175     if (keyboard_state[SDL_SCANCODE_A]) {
 176         player_move_left(level->player);
 177     } else if (keyboard_state[SDL_SCANCODE_D]) {
 178         player_move_right(level->player);
 179     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) < 0) {
 180         player_move_left(level->player);
 181     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) > 0) {
 182         player_move_right(level->player);
 183     } else {
 184         player_stop(level->player);
 185     }
 186
 187     return 0;
 188 }
 189
 190 void level_toggle_debug_mode(level_t *level)
 191 {
 192     camera_toggle_debug_mode(level->camera);
 193 }
 194
 195 void level_toggle_pause_mode(level_t *level)
 196 {
 197     camera_toggle_blackwhite_mode(level->camera);
 198 }
 199
 200 int level_reload_preserve_player(level_t *level, const char *file_name)
 201 {
 202     lt_t * const lt = create_lt();
 203     if (lt == NULL) {
 204         return -1;
 205     }
 206
 207     /* TODO(#104): duplicate code in create_level_from_file and level_reload_preserve_player */
 208
 209     FILE * const level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose);
 210     if (level_file == NULL) {
 211         throw_error(ERROR_TYPE_LIBC);
 212         RETURN_LT(lt, -1);
 213     }
 214
 215     char color[7];
 216     if (fscanf(level_file, "%6s", color) == EOF) {
 217         throw_error(ERROR_TYPE_LIBC);
 218         RETURN_LT(lt, -1);
 219     }
 220     level->background_color = color_from_hexstr(color);
 221
 222     player_t * const skipped_player = create_player_from_stream(level_file);
 223     if (skipped_player == NULL) {
 224         RETURN_LT(lt, -1);
 225     }
 226     destroy_player(skipped_player);
 227
 228     platforms_t * const platforms = create_platforms_from_stream(level_file);
 229     if (platforms == NULL) {
 230         RETURN_LT(lt, -1);
 231     }
 232     level->platforms = RESET_LT(level->lt, level->platforms, platforms);
 233
 234     goals_t * const goals = create_goals_from_stream(level_file);
 235     if (goals == NULL) {
 236         RETURN_LT(lt, -1);
 237     }
 238     level->goals = RESET_LT(level->lt, level->goals, goals);
 239
 240     lava_t * const lava = create_lava_from_stream(level_file);
 241     if (lava == NULL) {
 242         RETURN_LT(lt, -1);
 243     }
 244
 245     RETURN_LT(lt, 0);
 246 }
 247
 248 int level_sound(level_t *level, sound_medium_t *sound_medium)
 249 {
 250     if (goals_sound(level->goals, sound_medium) < 0) {
 251         return -1;
 252     }
 253
 254     return 0;
 255 }