v4k-git-backup/engine/split/v4k_scene.h

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2024-03-26 16:15:02 +00:00
// -----------------------------------------------------------------------------
// scene framework
// - rlyeh, public domain
// camera
typedef struct camera_t {
mat44 view, proj;
vec3 position, updir, lookdir;
float yaw, pitch, roll; // mirror of (x,y) lookdir in deg;
float speed, fov; // fov in deg(45)
float move_friction, move_damping;
float look_friction, look_damping;
vec3 last_look; vec3 last_move; // used for friction and damping
bool damping;
bool orthographic; // 0 perspective, 1 orthographic; when ortho: dimetric[if pitch == -30º], isometric[if pitch == 35.264º]
float distance; // distance to pivot, when orbiting
// vec2 polarity = { +1,-1 }; // @todo
// vec2 sensitivity = { 2,2 }; // @todo
} camera_t;
API camera_t camera();
API void camera_teleport(camera_t *cam, vec3 pos);
API void camera_moveby(camera_t *cam, vec3 inc);
API void camera_fov(camera_t *cam, float fov);
API void camera_fps(camera_t *cam, float yaw, float pitch);
API void camera_fps2(camera_t *cam, float yaw, float pitch, float roll);
API void camera_orbit(camera_t *cam, float yaw, float pitch, float inc_distance);
API void camera_lookat(camera_t *cam, vec3 target);
API void camera_enable(camera_t *cam);
API camera_t *camera_get_active();
API int ui_camera(camera_t *cam);
API void ddraw_camera(camera_t *cam);
// object
typedef struct object_t {
uint64_t renderbucket;
mat44 transform;
quat rot;
vec3 sca, pos, euler, pivot;
array(handle) textures;
model_t model;
anim_t anim;
float anim_speed;
aabb bounds;
unsigned billboard; // [0..7] x(4),y(2),z(1) masks
bool light_cached; //< used by scene to update light data
} object_t;
API object_t object();
API void object_rotate(object_t *obj, vec3 euler);
API void object_pivot(object_t *obj, vec3 euler);
API void object_teleport(object_t *obj, vec3 pos);
API void object_move(object_t *obj, vec3 inc);
API vec3 object_position(object_t *obj);
API void object_scale(object_t *obj, vec3 sca);
//
API void object_model(object_t *obj, model_t model);
API void object_anim(object_t *obj, anim_t anim, float speed);
API void object_diffuse(object_t *obj, texture_t tex);
API void object_diffuse_push(object_t *obj, texture_t tex);
API void object_diffuse_pop(object_t *obj);
API void object_billboard(object_t *obj, unsigned mode);
// object_pose(transform); // @todo
// light
enum LIGHT_TYPE {
LIGHT_DIRECTIONAL,
LIGHT_POINT,
LIGHT_SPOT,
};
enum LIGHT_FLAGS {
LIGHT_CAST_SHADOWS = 1,
};
typedef struct light_t {
char type;
vec3 diffuse, specular, ambient;
vec3 pos, dir;
struct {
float constant, linear, quadratic;
} falloff;
float specularPower;
float innerCone, outerCone;
//@todo: cookie, flare
// internals
bool cached; //< used by scene to invalidate cached light data
} light_t;
API light_t light();
// API void light_flags(int flags);
API void light_type(light_t* l, char type);
API void light_diffuse(light_t* l, vec3 color);
API void light_specular(light_t* l, vec3 color);
API void light_ambient(light_t* l, vec3 color);
API void light_teleport(light_t* l, vec3 pos);
API void light_dir(light_t* l, vec3 dir);
API void light_power(light_t* l, float power);
API void light_falloff(light_t* l, float constant, float linear, float quadratic);
API void light_cone(light_t* l, float innerCone, float outerCone);
API void light_update(unsigned num_lights, light_t *lv);
// scene
enum SCENE_FLAGS {
SCENE_WIREFRAME = 1,
SCENE_CULLFACE = 2,
SCENE_BACKGROUND = 4,
SCENE_FOREGROUND = 8,
SCENE_UPDATE_SH_COEF = 16,
};
typedef struct scene_t {
array(object_t) objs;
array(light_t) lights;
// special objects below:
skybox_t skybox;
int u_coefficients_sh;
} scene_t;
API scene_t* scene_push();
API void scene_pop();
API scene_t* scene_get_active();
API int scene_merge(const char *source);
API void scene_render(int flags);
API object_t* scene_spawn();
API unsigned scene_count();
API object_t* scene_index(unsigned index);
API light_t* scene_spawn_light();
API unsigned scene_count_light();
API light_t* scene_index_light(unsigned index);