#ifndef NPC_H
#define NPC_H

#include "game.h"
#include "memory.h"

#include <stdbool.h>
#include <stdint.h>

enum {

    NPC_NONE = 0,
    NPC_FRIENDLY = 1, // The player's team
    NPC_HOSTILE = 2,  // to the player
    NPC_ALL = 3

};

/* /!\ Warning /!\
 * Do not keep hard references to non-static NPCs, as they will likely move
 * in the stack */

/* Creates a new NPC in the NPC stack (Needs to be set to valid values !)
 * Returns NULL on failure */
NPC *npc_create();

/* Pops the NPC from the NPC stack
 * Consider this as a free */
void npc_remove(NPC *npc);

/* Frees then malloc()s a new path to npc
 * Useful if you want to safely edit a path */
int npc_clear_path(NPC *npc);

/* Adds point x,y to the path of npc
 * Won't work on static NPCs, use npc_clear_path before or make them on the
 * heap */
int npc_append_path(uint16_t x, uint16_t y, NPC *npc);

/* Clears the NPCs path and creates a new one going to dest,
 * avoiding non-walkable tiles
 * Returns non-zero on failure */
int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc);

/* Draws the player player. This function should be called after drawing the
 * map! */
void npc_draw(Game *game);

/* Updates the static NPCs and the NPC stack */
void update_npcs(Game *game);
/* Updates the singular NPC npc. Be careful with it ! */
void update_npc(NPC *npc);
/* Inits/Clears the NPC stack*/
void npc_reload(Game *game);

#endif