Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
Download

Experimento con emscripten y SDL

1178 views
Tweet
Share
Share
1
#ifndef ENGINE_H

2
#define ENGINE_H

3


4
#include <SDL2/SDL.h>

5
#include <SDL2/SDL_image.h>

6
#include <SDL/SDL_ttf.h>

7
#include <emscripten.h>

8
#include <stdbool.h>

9


10
#include "input_processor.h"

11
#include "sprite.h"

12
#include "actor.h"

13


14
typedef struct engine engine;

15


16
typedef enum DIRECTION

17
{

18
    DIRECTION_N,

19
    DIRECTION_E,

20
    DIRECTION_S,

21
    DIRECTION_W

22
} DIRECTION;

23


24
enum

25
{

26
    SAND_TEXTURE,

27
    SPRITES_TEXTURE,

28
    STATUS_BAR_TEXTURE,

29
    NUM_TEXTURES

30
};

31


32
typedef enum SPRITES_DECALS

33
{

34
    TAIL_S,

35
    TAIL_W,

36
    HEAD_N,

37
    HEAD_E,

38
    BODY_SE,

39
    BODY_SW,

40
    BODY_NW,

41
    BLANK,

42
    TAIL_E,

43
    TAIL_N,

44
    HEAD_W,

45
    HEAD_S,

46
    BODY_N,

47
    BODY_E,

48
    BODY_NE,

49
    APPLE,

50
    NUM_SPRITES_DECALS

51
} SPRITES_DECALS;

52


53
enum {

54
    MAX_SNAKE_SEGMENTS = 50,

55
    TILE_DIMENSION = 40,

56
    STATUS_BAR_HEIGHT = 2, // given in tiles

57
    STATUS_TEXT_SIZE = 30

58
};

59


60
#define STATUS_TEXT_FONT "assets/edosz.ttf"

61


62
#define INITIAL_SNAKE_SECONDS_PER_UPDATE 0.2

63
#define MINIMUM_SNAKE_SECONDS_PER_UPDATE 0.005

64
#define SNAKE_SECONDS_PER_UPDATE_INCREMENT 0.01

65


66
#include "apple_actor.h"

67
#include "snake_actor.h"

68
#include "background_actor.h"

69


70
struct engine 

71
{

72
    unsigned int fps;

73
    unsigned int current_frame;

74
    SDL_Window *window;

75
    SDL_Renderer *renderer;

76
    unsigned int w;

77
    unsigned int h;

78


79
    Uint32 start_time;

80
    bool should_start_logic_loop;

81
    unsigned int whole_frames_to_do;

82


83
    actor_list *render_list;

84
    actor_list *logic_list;

85


86
    SDL_Texture *textures[NUM_TEXTURES];

87
    decal sprites_decals[NUM_SPRITES_DECALS];

88
    decal sand_decal;

89


90
    apple_actor apple_actor;

91
    background_actor background_actor;

92
    // status_bar_actor status_bar_actor;

93
    snake_actor snake_actor;

94


95
    unsigned int score;

96
    unsigned int *occupied_gridpoints;

97
    int grid_width;

98
    int grid_height;

99
};

100


101
engine eng;

102


103
engine *engine_init(

104
        unsigned int w,

105
        unsigned int h);

106


107
void engine_destroy();

108


109
void engine_start();

110


111
void engine_reset();

112


113
void engine_get_grid_coord(const int *pixel_coord, int *grid_coord);

114
void engine_get_pixel_coord(const int *grid_coord, int *pixel_coord);

115
void engine_apply_boundary_conditions(int *grid_coords);

116


117
#endif

118


119