#include "game.h"

#include "map.h"

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <gint/keyboard.h>
#include <gint/cpu.h>
#include <gint/display.h>

#include "npc.h"


extern bopti_image_t SignAction_img;

extern Dialog *dialogRPG;
//extern NPC *npcRPG;
//extern uint32_t nbNPC;

#define MAX_INTERACTION_DISTANCE    12

void interaction_available(Game *game)
{
    uint32_t i;

    /*NPCs take priority over signs*/

    for(uint32_t i=0; i<game->map_level->nbNPC; i++){
        if(!game->map_level->npcs[i].has_dialogue) continue;

        /* simple distance check along X and Y axis */
        /* Be careful to use world coordinates, not local (i.e.map) ones */
        if  ((abs((int) game->player.wx -
                   (int) game->map_level->npcs[i].curx*PXSIZE )
                   < MAX_INTERACTION_DISTANCE*PXSIZE)
           && (abs((int) game->player.wy -
                   (int) game->map_level->npcs[i].cury*PXSIZE )
                   < MAX_INTERACTION_DISTANCE*PXSIZE)){
            /* the player can do something */
            game->player.canDoSomething = true;
            /* we mark the action for futur treatment in player_action() */
            game->player.whichAction = i;
            /* this is an interraction with a NPC */
            game->player.isInteractingWithNPC = true;
            return;
        }
    }

    for(i = 0; i < game->map_level->nbSign; i++){
         /* simple distance check along X and Y axis */
        /* Be careful to use world coordinates, not local (i.e.map) ones */
        if  ((abs((int) game->player.wx -
                   (int) game->map_level->signs[i].x*PXSIZE )
                   < MAX_INTERACTION_DISTANCE*PXSIZE)
           && (abs((int) game->player.wy -
                   (int) game->map_level->signs[i].y*PXSIZE )
                   < MAX_INTERACTION_DISTANCE*PXSIZE))
        {
            /* the player can do something */
            game->player.canDoSomething = true;
            /* we mark the action for future treatment in player_action() */
            game->player.whichAction = i;
            /* this is not an interraction with a NPC */
            game->player.isInteractingWithNPC = false;
            return;
        }
    }

    /* else nothing to be done here */
    game->player.canDoSomething = false;
    game->player.whichAction = -1;
    game->player.isInteractingWithNPC = false;
    return;
}

void game_logic(Game *game) {

    update_npcs( game );

    /* we check if interactions are possible close to the player */

    interaction_available(game);
}


void game_render_indicator(Game *game) {
    /* nothing to do for the player so we quit */
    if(game->player.canDoSomething==false) return;

    /* else we draw a small indicator on the screen */
    dimage(5, 5, &SignAction_img);
}


void game_draw(Game *game) {
    /* Draw everything. */
    dclear(C_WHITE);
    map_render_by_layer(game, BACKGROUND);
    npc_draw(game);
    player_draw(game);
    map_render_by_layer(game, FOREGROUND);
    game_render_indicator(game);
    /*DEBUG*/
    dprint(8, 8, C_BLACK, "Lifes: %d", game->player.life);
    dprint(8, 16, C_BLACK, "Mana: %d", game->mana);
}

/* Key management */

void game_get_inputs(Game *game) {
    clearevents();

    /* Key binding for the Player action */

    /*************************************/

    if(keydown(KEY_EXIT)) game->exittoOS = true;

    /* Player actions - Prototypes in player.h and implementation in player.c */
    if(keydown(KEY_LEFT))  player_move(game, D_LEFT);
    if(keydown(KEY_RIGHT)) player_move(game, D_RIGHT);
    if(keydown(KEY_UP))    player_move(game, D_UP);
    if(keydown(KEY_DOWN))  player_move(game, D_DOWN);
    if(keydown(KEY_SHIFT)) player_action(game);

    /* Display Debug Information on screen */
#if DEBUGMODE
    if(keydown(KEY_F1)) {
        game->debug_map = !game->debug_map;
    }
    if(keydown(KEY_F2)) {
        game->debug_player = !game->debug_player;
    }
    if(keydown(KEY_F3)) {
        game->debug_extra = !game->debug_extra;
    }
#endif


    /* if USB is enabled - keybinding for screencapture */
#if USB_FEATURE

    if(keydown(KEY_7)) game->screenshot = true;
    if(keydown(KEY_8)) game->record = !game->record;

#endif //USB_FEATURE
}