src/game/level.c

   1 #include <SDL2/SDL.h>
   2 #include <assert.h>
   3
   4 #include "color.h"
   5 #include "game/camera.h"
   6 #include "game/level.h"
   7 #include "game/level/background.h"
   8 #include "game/level/boxes.h"
   9 #include "game/level/goals.h"
  10 #include "game/level/labels.h"
  11 #include "game/level/lava.h"
  12 #include "game/level/physical_world.h"
  13 #include "game/level/platforms.h"
  14 #include "game/level/player.h"
  15 #include "system/error.h"
  16 #include "system/lt.h"
  17 #include "system/lt/lt_adapters.h"
  18
  19 struct Level
  20 {
  21     Lt *lt;
  22
  23     Physical_world *physical_world;
  24     Player *player;
  25     Platforms *platforms;
  26     Goals *goals;
  27     Lava *lava;
  28     Color background_color;
  29     Platforms *back_platforms;
  30     Background *background;
  31     Boxes *boxes;
  32     Labels *labels;
  33 };
  34
  35 Level *create_level_from_file(const char *file_name)
  36 {
  37     assert(file_name);
  38
  39     Lt *const lt = create_lt();
  40     if (lt == NULL) {
  41         return NULL;
  42     }
  43
  44     Level *const level = PUSH_LT(lt, malloc(sizeof(Level)), free);
  45     if (level == NULL) {
  46         throw_error(ERROR_TYPE_LIBC);
  47         RETURN_LT(lt, NULL);
  48     }
  49
  50     FILE *level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose_lt);
  51     if (level_file == NULL) {
  52         throw_error(ERROR_TYPE_LIBC);
  53         RETURN_LT(lt, NULL);
  54     }
  55
  56     char color[7];
  57     if (fscanf(level_file, "%6s", color) == EOF) {
  58         throw_error(ERROR_TYPE_LIBC);
  59         RETURN_LT(lt, NULL);
  60     }
  61     level->background_color = color_from_hexstr(color);
  62
  63     level->player = PUSH_LT(lt, create_player_from_stream(level_file), destroy_player);
  64     if (level->player == NULL) {
  65         RETURN_LT(lt, NULL);
  66     }
  67
  68     level->platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  69     if (level->platforms == NULL) {
  70         RETURN_LT(lt, NULL);
  71     }
  72
  73     level->goals = PUSH_LT(lt, create_goals_from_stream(level_file), destroy_goals);
  74     if (level->goals == NULL) {
  75         RETURN_LT(lt, NULL);
  76     }
  77
  78     level->lava = PUSH_LT(lt, create_lava_from_stream(level_file), destroy_lava);
  79     if (level->lava == NULL) {
  80         RETURN_LT(lt, NULL);
  81     }
  82
  83     level->back_platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  84     if (level->back_platforms == NULL) {
  85         RETURN_LT(lt, NULL);
  86     }
  87
  88     level->boxes = PUSH_LT(lt, create_boxes_from_stream(level_file), destroy_boxes);
  89     if (level->boxes == NULL) {
  90         RETURN_LT(lt, NULL);
  91     }
  92
  93     level->labels = PUSH_LT(lt, create_labels_from_stream(level_file), destroy_labels);
  94     if (level->labels == NULL) {
  95         RETURN_LT(lt, NULL);
  96     }
  97
  98     level->background = PUSH_LT(lt, create_background(level->background_color), destroy_background);
  99     if (level->background == NULL) {
 100         RETURN_LT(lt, NULL);
 101     }
 102
 103     level->physical_world = PUSH_LT(lt, create_physical_world(), destroy_physical_world);
 104     if (level->physical_world == NULL) {
 105         RETURN_LT(lt, NULL);
 106     }
 107     if (physical_world_add_solid(
 108             level->physical_world,
 109             player_as_solid(level->player)) < 0) { RETURN_LT(lt, NULL); }
 110     if (boxes_add_to_physical_world(
 111             level->boxes,
 112             level->physical_world) < 0) { RETURN_LT(lt, NULL); }
 113
 114     level->lt = lt;
 115
 116     fclose(RELEASE_LT(lt, level_file));
 117
 118     return level;
 119 }
 120
 121 void destroy_level(Level *level)
 122 {
 123     assert(level);
 124     RETURN_LT0(level->lt);
 125 }
 126
 127 int level_render(const Level *level, Camera *camera)
 128 {
 129     assert(level);
 130
 131     player_focus_camera(level->player, camera);
 132
 133     if (camera_clear_background(camera, level->background_color) < 0) {
 134         return -1;
 135     }
 136
 137     if (background_render(level->background, camera) < 0) {
 138         return -1;
 139     }
 140
 141     if (platforms_render(level->back_platforms, camera) < 0) {
 142         return -1;
 143     }
 144
 145     if (player_render(level->player, camera) < 0) {
 146         return -1;
 147     }
 148
 149     if (boxes_render(level->boxes, camera) < 0) {
 150         return -1;
 151     }
 152
 153     if (lava_render(level->lava, camera) < 0) {
 154         return -1;
 155     }
 156
 157     if (platforms_render(level->platforms, camera) < 0) {
 158         return -1;
 159     }
 160
 161     if (goals_render(level->goals, camera) < 0) {
 162         return -1;
 163     }
 164
 165     if (labels_render(level->labels, camera) < 0) {
 166         return -1;
 167     }
 168
 169     return 0;
 170 }
 171
 172 int level_update(Level *level, float delta_time)
 173 {
 174     assert(level);
 175     assert(delta_time > 0);
 176
 177     physical_world_apply_gravity(level->physical_world);
 178     boxes_float_in_lava(level->boxes, level->lava);
 179
 180     boxes_update(level->boxes, delta_time);
 181     player_update(level->player, delta_time);
 182
 183     physical_world_collide_solids(level->physical_world, level->platforms);
 184
 185     player_hide_goals(level->player, level->goals);
 186     player_die_from_lava(level->player, level->lava);
 187
 188     goals_update(level->goals, delta_time);
 189     lava_update(level->lava, delta_time);
 190     labels_update(level->labels, delta_time);
 191
 192     return 0;
 193 }
 194
 195 int level_event(Level *level, const SDL_Event *event)
 196 {
 197     assert(level);
 198     assert(event);
 199
 200     switch (event->type) {
 201     case SDL_KEYDOWN:
 202         switch (event->key.keysym.sym) {
 203         case SDLK_SPACE:
 204             player_jump(level->player);
 205             break;
 206         }
 207         break;
 208
 209     case SDL_JOYBUTTONDOWN:
 210         if (event->jbutton.button == 1) {
 211             player_jump(level->player);
 212         }
 213         break;
 214     }
 215
 216     return 0;
 217 }
 218
 219 int level_input(Level *level,
 220                 const Uint8 *const keyboard_state,
 221                 SDL_Joystick *the_stick_of_joy)
 222 {
 223     assert(level);
 224     assert(keyboard_state);
 225     (void) the_stick_of_joy;
 226
 227     if (keyboard_state[SDL_SCANCODE_A]) {
 228         player_move_left(level->player);
 229     } else if (keyboard_state[SDL_SCANCODE_D]) {
 230         player_move_right(level->player);
 231     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) < 0) {
 232         player_move_left(level->player);
 233     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) > 0) {
 234         player_move_right(level->player);
 235     } else {
 236         player_stop(level->player);
 237     }
 238
 239     return 0;
 240 }
 241
 242 int level_reload_preserve_player(Level *level, const char *file_name)
 243 {
 244     Lt * const lt = create_lt();
 245     if (lt == NULL) {
 246         return -1;
 247     }
 248
 249     /* TODO(#104): duplicate code in create_level_from_file and level_reload_preserve_player */
 250
 251
 252
 253     FILE * const level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose_lt);
 254     if (level_file == NULL) {
 255         throw_error(ERROR_TYPE_LIBC);
 256         RETURN_LT(lt, -1);
 257     }
 258
 259     char color[7];
 260     if (fscanf(level_file, "%6s", color) == EOF) {
 261         throw_error(ERROR_TYPE_LIBC);
 262         RETURN_LT(lt, -1);
 263     }
 264     level->background_color = color_from_hexstr(color);
 265
 266     Player * const skipped_player = create_player_from_stream(level_file);
 267     if (skipped_player == NULL) {
 268         RETURN_LT(lt, -1);
 269     }
 270     destroy_player(skipped_player);
 271
 272     Platforms * const platforms = create_platforms_from_stream(level_file);
 273     if (platforms == NULL) {
 274         RETURN_LT(lt, -1);
 275     }
 276     level->platforms = RESET_LT(level->lt, level->platforms, platforms);
 277
 278     Goals * const goals = create_goals_from_stream(level_file);
 279     if (goals == NULL) {
 280         RETURN_LT(lt, -1);
 281     }
 282     level->goals = RESET_LT(level->lt, level->goals, goals);
 283
 284     Lava * const lava = create_lava_from_stream(level_file);
 285     if (lava == NULL) {
 286         RETURN_LT(lt, -1);
 287     }
 288     level->lava = RESET_LT(level->lt, level->lava, lava);
 289
 290     Platforms * const back_platforms = create_platforms_from_stream(level_file);
 291     if (back_platforms == NULL) {
 292         RETURN_LT(lt, -1);
 293     }
 294     level->back_platforms = RESET_LT(level->lt, level->back_platforms, back_platforms);
 295
 296     Boxes * const boxes = create_boxes_from_stream(level_file);
 297     if (boxes == NULL) {
 298         RETURN_LT(lt, -1);
 299     }
 300     level->boxes = RESET_LT(level->lt, level->boxes, boxes);
 301
 302     Labels * const labels = create_labels_from_stream(level_file);
 303     if (labels == NULL) {
 304         RETURN_LT(lt, -1);
 305     }
 306     level->labels = RESET_LT(level->lt, level->labels, labels);
 307
 308     physical_world_clean(level->physical_world);
 309     if (physical_world_add_solid(
 310             level->physical_world,
 311             player_as_solid(level->player)) < 0) { RETURN_LT(lt, -1); }
 312     if (boxes_add_to_physical_world(
 313             level->boxes,
 314             level->physical_world) < 0) { RETURN_LT(lt, -1); }
 315
 316     RETURN_LT(lt, 0);
 317 }
 318
 319 int level_sound(Level *level, Sound_samples *sound_samples)
 320 {
 321     if (goals_sound(level->goals, sound_samples) < 0) {
 322         return -1;
 323     }
 324
 325     if (player_sound(level->player, sound_samples) < 0) {
 326         return -1;
 327     }
 328
 329     return 0;
 330 }
 331
 332 void level_toggle_debug_mode(Level *level)
 333 {
 334     background_toggle_debug_mode(level->background);
 335 }
 336
 337 int level_enter_camera_event(Level *level,
 338                              const Camera *camera)
 339 {
 340     goals_cue(level->goals, camera);
 341     goals_checkpoint(level->goals, level->player);
 342     labels_enter_camera_event(level->labels, camera);
 343     return 0;
 344 }
 345
 346 Rigid_rect *level_rigid_rect(Level *level,
 347                              const char *rigid_rect_id)
 348 {
 349     assert(level);
 350     assert(rigid_rect_id);
 351
 352     Rigid_rect *rigid_rect = player_rigid_rect(level->player,
 353                                                rigid_rect_id);
 354     if (rigid_rect != NULL) {
 355         return rigid_rect;
 356     }
 357
 358     rigid_rect = boxes_rigid_rect(level->boxes, rigid_rect_id);
 359     if (rigid_rect != NULL) {
 360         return rigid_rect;
 361     }
 362
 363     return NULL;
 364 }