LCOM1920-T5G03

#ifndef ENT_H_INCLUDED

#define ENT_H_INCLUDED

/**

 * @defgroup ent ent

 * @brief Entities module

 *

 * @{

 */

#include "libs.h"

/**

 * @brief Set scale.

 * @param   n   Scale

 */

void (ent_set_scale) (double n);

/**

 * @brief Set origin of screen (upper-left corner) in game referential coordinates.

 * @param   x   X-position of the upper-left corner of the screen

 * @param   y   Y-position of the upper-left corner of the screen

 */

void (ent_set_origin)(double x, double y);

/**

 * @brief Get scale.

 * @return  Scale

 */

double (ent_get_scale)  (void);

/**

 * @brief Get X-length of the screen in game referencial coordinates.

 * @return X-length

 */

double (ent_get_XLength)(void);

/**

 * @brief Get Y-length of the screen in game referencial coordinates.

 * @return Y-length

 */

double (ent_get_YLength)(void);

/**

 * @}

 */

/**

 * @defgroup gunner_t gunner_t

 * @ingroup ent

 * @brief Gunner module.

 *

 * @{

 */

/// @brief Identifier of a melee gunner

#define GUNNER_MELEE    BIT(0)

/// @brief Identifier of a ranged gunner

#define GUNNER_RANGED   BIT(1)

/// @brief Identifier of a player-controlled gunner

#define GUNNER_PLAYER   BIT(2)

/// @brief Identifier of an automatic follower gunner

#define GUNNER_FOLLOW   BIT(3)

/**

 * @brief Gunner.

 */

typedef struct gunner gunner_t;

/**

 * @brief Construct gunner.

 * @param   dude    Basic sprite representing the gunner

 * @param   weapon  Basic sprite representing the weapon of the gunner

 * @param   type    Type of gunner. Can be one of the identifier macros and also the OR-merge of any combination of them

 * @param   team    Team of the gunner. 1 for player 1, 2 for player 2, 3 for opponents and 0 for no team (temporary gunner)

 */

gunner_t* (gunner_ctor)(basic_sprite_t *dude, basic_sprite_t *weapon, uint16_t type, int team);

/**

 * @brief Destruct gunner.

 * @param   p   Pointer to gunner to be destructed

 */

void      (gunner_dtor)(gunner_t *p);

/**

 * @brief   Set gunner position.

 * @param   p   Pointer to gunner

 * @param   x   X-position of the gunner in game coordinates

 * @param   y   Y-position of the gunner in game coordinates

 */

void (gunner_set_pos)               (gunner_t *p, double x, double y);

/**

 * @brief   Set gunner spawn position.

 * @param   p   Pointer to gunner

 * @param   x   Spawn X-position of the gunner in game coordinates

 * @param   y   Spawn Y-position of the gunner in game coordinates

 */

void (gunner_set_spawn)             (gunner_t *p, double x, double y);

/**

 * @brief   Set gunner angle.

 * @param   p       Pointer to gunner

 * @param   angle   Angle in radians

 */

void (gunner_set_angle)             (gunner_t *p, double angle);

/**

 * @brief   Set gunner health (total, max health).

 * @param   p       Pointer to gunner

 * @param   health  Health

 */

void (gunner_set_health)            (gunner_t *p, double health);

/**

 * @brief   Set gunner current health.

 * @param   p       Pointer to gunner

 * @param   health  Current health

 */

void (gunner_set_curr_health)       (gunner_t *p, double health);

/**

 * @brief   Get gunner X-position.

 * @param   p   Pointer to gunner

 * @return  X-position of the gunner

 */

double  (gunner_get_x)              (const gunner_t *p);

/**

 * @brief   Get gunner Y-position.

 * @param   p   Pointer to gunner

 * @return  Y-position of the gunner

 */

double  (gunner_get_y)              (const gunner_t *p);

/**

 * @brief   Get gunner spawn X-position.

 * @param   p   Pointer to gunner

 * @return  Spawn X-position of the gunner

 */

double  (gunner_get_spawn_x)        (const gunner_t *p);

/**

 * @brief   Get gunner spawn Y-position.

 * @param   p   Pointer to gunner

 * @return  Spawn Y-position of the gunner

 */

double  (gunner_get_spawn_y)        (const gunner_t *p);

/**

 * @brief   Get gunner angle.

 * @param   p   Pointer to gunner

 * @return  Angle of the gunner

 */

double  (gunner_get_angle)          (const gunner_t *p);

/**

 * @brief   Get gunner max health.

 * @param   p   Pointer to gunner

 * @return  Max health of the gunner

 */

double  (gunner_get_health)         (const gunner_t *p);

/**

 * @brief   Get gunner current health.

 * @param   p   Pointer to gunner

 * @return  Current health of the gunner

 */

double  (gunner_get_curr_health)    (const gunner_t *p);

/**

 * @brief   Get gunner X-position in screen coordinates.

 * @param   p   Pointer to gunner

 * @return  X-position of the gunner in screen coordinates

 */

int16_t (gunner_get_x_screen)       (const gunner_t *p);

/**

 * @brief   Get gunner Y-position in screen coordinates.

 * @param   p   Pointer to gunner

 * @return  Y-position of the gunner in screen coordinates

 */

int16_t (gunner_get_y_screen)       (const gunner_t *p);

/**

 * @brief   Get gunner type.

 * @param   p   Pointer to gunner

 * @return  Type of gunner

 */

uint16_t (gunner_get_type)          (const gunner_t *p);

/**

 * @brief   Get gunner team.

 * @param   p   Pointer to gunner

 * @return  Team of gunner

 */

int     (gunner_get_team)           (const gunner_t *p);

/**

 * @brief   Draw gunner on screen buffer.

 * @param   p   Pointer to gunner

 */

void (gunner_draw)(gunner_t *p);

/**

 * @brief   Draw gunner health bar on screen buffer.

 * @param   p   Pointer to gunner

 */

void (gunner_draw_health)(const gunner_t *p);

/**

 * @brief   Draw list of gunners on screen buffer.

 * @param   shooter_list    List of gunners

 */

void (gunner_draw_list)(list_t *shooter_list);

/**

 * @brief Get distance between two gunners.

 * @param   p1  Gunner 1

 * @param   p2  Gunner 2

 * @return  Euclidian distance between the two gunners

 */

double (gunner_distance)(const gunner_t *p1, const gunner_t *p2);

/**

 * @brief Check if two gunners are colliding.

 * @param   p1  Gunner 1

 * @param   p2  Gunner 2

 * @return  true if the two gunners are colliding, false otherwise

 */

int (gunner_collides_gunner)(const gunner_t *p1, const gunner_t *p2);

/**

 * @}

 */

/**

 * @defgroup bullet_t bullet_t

 * @ingroup ent

 * @brief Bullet module.

 *

 * @{

 */

/**

 * @brief Bullet.

 */

typedef struct bullet bullet_t;

/**

 * @brief Construct bullet.

 * @param   shooter Pointer to gunner that shot that bullet

 * @param   b       Basic sprite of the bullet

 * @param   x       X-position

 * @param   y       Y-position

 * @param   vx      X-speed

 * @param   vy      Y-speed

 * @return Pointer to constructed bullet, or NULL if failed

 */

bullet_t* (bullet_ctor)(const gunner_t *shooter, const basic_sprite_t *b, double x, double y, double vx, double vy);

/**

 * @brief Destruct bullet.

 * @param   p   Pointer to bullet to be destructed

 */

void      (bullet_dtor)(bullet_t *p);

/**

 * @brief   Get bullet X-position.

 * @param   p   Pointer to bullet

 * @return  X-position of the bullet

 */

double  (bullet_get_x)       (const bullet_t *p);

/**

 * @brief   Get bullet Y-position.

 * @param   p   Pointer to bullet

 * @return  Y-position of the bullet

 */

double  (bullet_get_y)       (const bullet_t *p);

/**

 * @brief   Get bullet X-speed.

 * @param   p   Pointer to bullet

 * @return  X-speed of the bullet

 */

double  (bullet_get_vx)      (const bullet_t *p);

/**

 * @brief   Get bullet Y-speed.

 * @param   p   Pointer to bullet

 * @return  Y-speed of the bullet

 */

double  (bullet_get_vy)      (const bullet_t *p);

/**

 * @brief   Get bullet X-position in screen coordinates.

 * @param   p   Pointer to bullet

 * @return  X-position of the bullet in screen coordinates

 */

int16_t (bullet_get_x_screen)(const bullet_t *p);

/**

 * @brief   Get bullet Y-position in screen coordinates.

 * @param   p   Pointer to bullet

 * @return  Y-position of the bullet in screen coordinates

 */

int16_t (bullet_get_y_screen)(const bullet_t *p);

/**

 * @brief   Get bullet damage.

 * @param   p   Pointer to bullet

 * @return  Damage

 */

double  (bullet_get_damage)  (const bullet_t *p);

/**

 * @brief   Set bullet damage.

 * @param   p   Pointer to bullet

 * @param   damage  Damage

 */

void    (bullet_set_damage)  (bullet_t *p, double damage);

/**

 * @brief Get gunner that shot the bullet.

 * @param   p   Pointer to bullet

 * @return  Pointer to gunner that shot the bullet

 */

const gunner_t* (bullet_get_shooter)(const bullet_t *p);

/**

 * @brief Update bullet position (i.e., advance it according to its speed).

 * @param   p   Pointer to bullet

 */

void (bullet_update_movement)(bullet_t *p);

/**

 * @brief Update movement of bullets in a list.

 * @param   bullet_list     Pointer to bullet list

 */

void (bullet_update_movement_list)(list_t *bullet_list);

/**

 * @brief Draw bullet on screen buffer.

 * @param   p   Pointer to bullet

 */

void (bullet_draw)(bullet_t *p);

/**

 * @brief Draw bullets in list on screen buffer.

 * @param   bullet_list     Pointer to bullet list

 */

void (bullet_draw_list)(list_t *bullet_list);

/**

 * @}

 */

/**

 * @defgroup map_t map_t

 * @ingroup ent

 * @brief Bullet module.

 *

 * @{

 */

/**

 * @brief Map.

 */

typedef struct map map_t;

/**

 * @brief Construct map.

 * @param   background  XPM describing map as it should be rendered

 * @param   collide     XPM with transparency describing what parts of the map will cause collision

 * @return  Pointer to constructed map, or NULL if failed

 */

map_t* (map_ctor)(const char *const *background, const char *const *collide);

/**

 * @brief Destruct map.

 * @param   p   Pointer to map to be destructed

 */

void   (map_dtor)(map_t *p);

/**

 * @brief Get map width.

 * @param   p   Pointer to map

 * @return      Width of map

 */

uint16_t (map_get_width)   (const map_t *p);

/**

 * @brief Get map height.

 * @param   p   Pointer to map

 * @return      Height of map

 */

uint16_t (map_get_height)  (const map_t *p);

/**

 * @brief Use Dijkstra's path-finding algorithm.

 *

 * Allows a follower to know where to move so it gets closer to a given target.

 *

 * This function is implemented in a clever way that reduces the time of execution.

 * On the other hand, it might not always give the shortest path, but it is

 * guaranteeed to provide a decent, valid path to the target.

 *

 * @param   p   Pointer to map

 * @param   x_  X-position of the target

 * @param   y_  Y-position of the target

 * @return  SUCCESS if operation is successful, false otherwise

 */

int (map_make_dijkstra)(map_t *p, double x_, double y_);

/**

 * @brief Get the direction a follower should move to get closer to the target.

 * @param   p       Pointer to map

 * @param   x       X-position of the follower

 * @param   y       Y-position of the follower

 * @param   theta   Pointer to angle that will be updated

 * @return SUCCESS if operation was successful, other value otherwise

 */

int (map_where_to_follow)(const map_t *p, double x, double y, double *theta);

/**

 * @brief Draw map on screen buffer.

 * @param   p   Pointer to map

 */

void   (map_draw)(map_t *p);

/**

 * @brief Evaluate if point collides with map.

 * @param   p   Pointer to map

 * @param   x   X-position of the point

 * @param   y   Y-position of the point

 * @return true if the point collides with the map, false otherwise

 */

int    (map_collides_point)(const map_t *p, double x, double y);

/**

 * @}

 */

/**

 * @brief Evaluate if gunner is colliding with map.

 * @param   p       Pointer to map

 * @param   gunner  Pointer to gunner

 * @return true if the gunner collides with the map, false otherwise

 */

int    (map_collides_gunner)(const map_t *p, const gunner_t *gunner);

/**

 * @brief Evaluate if bullet is colliding with map.

 * @param   p       Pointer to map

 * @param   bullet  Pointer to bullet

 * @return true if the bullet collides with the map, false otherwise

 */

int    (map_collides_bullet)(const map_t *p, const bullet_t *bullet);

/**

 * @brief Evaluate if bullet is colliding with gunner.

 * @param   shooter     Pointer to gunner

 * @param   bull        Pointer to bullet

 * @return true if the bullet collides with the gunner, false otherwise

 */

int (gunner_collides_bullet)(const gunner_t *shooter, const bullet_t *bull);

#endif //ENT_H_INCLUDED