src/game/level.c

   1 #include <SDL2/SDL.h>
   2 #include <assert.h>
   3
   4 #include "game/level.h"
   5 #include "game/level/camera.h"
   6 #include "game/level/goals.h"
   7 #include "game/level/lava.h"
   8 #include "game/level/platforms.h"
   9 #include "game/level/player.h"
  10 #include "system/error.h"
  11 #include "system/lt.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     platforms_t *back_platforms;
  25 };
  26
  27 level_t *create_level_from_file(const char *file_name)
  28 {
  29     assert(file_name);
  30
  31     lt_t *const lt = create_lt();
  32     if (lt == NULL) {
  33         return NULL;
  34     }
  35
  36     level_t *const level = PUSH_LT(lt, malloc(sizeof(level_t)), free);
  37     if (level == NULL) {
  38         throw_error(ERROR_TYPE_LIBC);
  39         RETURN_LT(lt, NULL);
  40     }
  41
  42     FILE *level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose);
  43     if (level_file == NULL) {
  44         throw_error(ERROR_TYPE_LIBC);
  45         RETURN_LT(lt, NULL);
  46     }
  47
  48     char color[7];
  49     if (fscanf(level_file, "%6s", color) == EOF) {
  50         throw_error(ERROR_TYPE_LIBC);
  51         RETURN_LT(lt, NULL);
  52     }
  53     level->background_color = color_from_hexstr(color);
  54
  55     level->player = PUSH_LT(lt, create_player_from_stream(level_file), destroy_player);
  56     if (level->player == NULL) {
  57         RETURN_LT(lt, NULL);
  58     }
  59
  60     level->platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  61     if (level->platforms == NULL) {
  62         RETURN_LT(lt, NULL);
  63     }
  64
  65     level->goals = PUSH_LT(lt, create_goals_from_stream(level_file), destroy_goals);
  66     if (level->goals == NULL) {
  67         RETURN_LT(lt, NULL);
  68     }
  69
  70     level->lava = PUSH_LT(lt, create_lava_from_stream(level_file), destroy_lava);
  71     if (level->lava == NULL) {
  72         RETURN_LT(lt, NULL);
  73     }
  74
  75     level->back_platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  76     if (level->back_platforms == NULL) {
  77         RETURN_LT(lt, NULL);
  78     }
  79
  80     level->camera = PUSH_LT(lt, create_camera(vec(0.0f, 0.0f)), destroy_camera);
  81     if (level->camera == NULL) {
  82         RETURN_LT(lt, NULL);
  83     }
  84
  85     level->lt = lt;
  86
  87     fclose(RELEASE_LT(lt, level_file));
  88
  89     return level;
  90 }
  91
  92 void destroy_level(level_t *level)
  93 {
  94     assert(level);
  95     RETURN_LT0(level->lt);
  96 }
  97
  98 int level_render(const level_t *level, SDL_Renderer *renderer)
  99 {
 100     assert(level);
 101     assert(renderer);
 102
 103     if (camera_clear_background(level->camera, renderer, level->background_color) < 0) {
 104         return -1;
 105     }
 106
 107     if (platforms_render(level->back_platforms, renderer, level->camera) < 0) {
 108         return -1;
 109     }
 110
 111     if (player_render(level->player, renderer, level->camera) < 0) {
 112         return -1;
 113     }
 114
 115     if (lava_render(level->lava, renderer, level->camera) < 0) {
 116         return -1;
 117     }
 118
 119     if (platforms_render(level->platforms, renderer, level->camera) < 0) {
 120         return -1;
 121     }
 122
 123     if (goals_render(level->goals, renderer, level->camera) < 0) {
 124         return -1;
 125     }
 126
 127     /* TODO(#157): goals_cue is not supposed to be invoked in level_render
 128      *
 129      * But I simply couldn't find a better place for it.
 130      */
 131     goals_cue(level->goals, renderer, level->camera);
 132
 133     return 0;
 134 }
 135
 136 int level_update(level_t *level, float delta_time)
 137 {
 138     assert(level);
 139     assert(delta_time > 0);
 140
 141     player_update(level->player, level->platforms, delta_time);
 142     player_focus_camera(level->player, level->camera);
 143     player_hide_goals(level->player, level->goals);
 144     player_die_from_lava(level->player, level->lava);
 145
 146     goals_update(level->goals, delta_time);
 147     goals_checkpoint(level->goals, level->player);
 148     lava_update(level->lava, delta_time);
 149
 150     return 0;
 151 }
 152
 153 int level_event(level_t *level, const SDL_Event *event)
 154 {
 155     assert(level);
 156     assert(event);
 157
 158     switch (event->type) {
 159     case SDL_KEYDOWN:
 160         switch (event->key.keysym.sym) {
 161         case SDLK_SPACE:
 162             player_jump(level->player);
 163             break;
 164         }
 165         break;
 166
 167     case SDL_JOYBUTTONDOWN:
 168         if (event->jbutton.button == 1) {
 169             player_jump(level->player);
 170         }
 171         break;
 172     }
 173
 174     return 0;
 175 }
 176
 177 int level_input(level_t *level,
 178                 const Uint8 *const keyboard_state,
 179                 SDL_Joystick *the_stick_of_joy)
 180 {
 181     assert(level);
 182     assert(keyboard_state);
 183     (void) the_stick_of_joy;
 184
 185     if (keyboard_state[SDL_SCANCODE_A]) {
 186         player_move_left(level->player);
 187     } else if (keyboard_state[SDL_SCANCODE_D]) {
 188         player_move_right(level->player);
 189     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) < 0) {
 190         player_move_left(level->player);
 191     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) > 0) {
 192         player_move_right(level->player);
 193     } else {
 194         player_stop(level->player);
 195     }
 196
 197     return 0;
 198 }
 199
 200 void level_toggle_debug_mode(level_t *level)
 201 {
 202     camera_toggle_debug_mode(level->camera);
 203 }
 204
 205 void level_toggle_pause_mode(level_t *level)
 206 {
 207     camera_toggle_blackwhite_mode(level->camera);
 208 }
 209
 210 int level_reload_preserve_player(level_t *level, const char *file_name)
 211 {
 212     lt_t * const lt = create_lt();
 213     if (lt == NULL) {
 214         return -1;
 215     }
 216
 217     /* TODO(#104): duplicate code in create_level_from_file and level_reload_preserve_player */
 218
 219     FILE * const level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose);
 220     if (level_file == NULL) {
 221         throw_error(ERROR_TYPE_LIBC);
 222         RETURN_LT(lt, -1);
 223     }
 224
 225     char color[7];
 226     if (fscanf(level_file, "%6s", color) == EOF) {
 227         throw_error(ERROR_TYPE_LIBC);
 228         RETURN_LT(lt, -1);
 229     }
 230     level->background_color = color_from_hexstr(color);
 231
 232     player_t * const skipped_player = create_player_from_stream(level_file);
 233     if (skipped_player == NULL) {
 234         RETURN_LT(lt, -1);
 235     }
 236     destroy_player(skipped_player);
 237
 238     platforms_t * const platforms = create_platforms_from_stream(level_file);
 239     if (platforms == NULL) {
 240         RETURN_LT(lt, -1);
 241     }
 242     level->platforms = RESET_LT(level->lt, level->platforms, platforms);
 243
 244     goals_t * const goals = create_goals_from_stream(level_file);
 245     if (goals == NULL) {
 246         RETURN_LT(lt, -1);
 247     }
 248     level->goals = RESET_LT(level->lt, level->goals, goals);
 249
 250     lava_t * const lava = create_lava_from_stream(level_file);
 251     if (lava == NULL) {
 252         RETURN_LT(lt, -1);
 253     }
 254     level->lava = RESET_LT(level->lt, level->lava, lava);
 255
 256     platforms_t * const back_platforms = create_platforms_from_stream(level_file);
 257     if (back_platforms == NULL) {
 258         RETURN_LT(lt, -1);
 259     }
 260     level->back_platforms = RESET_LT(level->lt, level->back_platforms, back_platforms);
 261
 262     RETURN_LT(lt, 0);
 263 }
 264
 265 int level_sound(level_t *level, sound_medium_t *sound_medium)
 266 {
 267     if (goals_sound(level->goals, sound_medium) < 0) {
 268         return -1;
 269     }
 270
 271     return 0;
 272 }