//    Copyright 2025 Bill Rossi
//    
//    This file is part of Starship Futuretime
//
//    Starship Futuretime is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
//
//    Starship Futuretime is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License along with Starship Futuretime. If not, see <https://www.gnu.org/licenses/>. 
#include <stdlib.h>
#include <stdbool.h>
#include <raylib.h>

#include "game.h"
#include "enemy.h"
#include "bullet.h"

#define FOREACH_ENTITY for (size_t i = 0; i < g->entities->count; i++)
#define INIT_ENTITY Entity *e = g->entities->entities[i]

void initialize_game(Game *g) {
  g->should_close = false;
  g->player = malloc(sizeof(Player));
  initialize_player(g->player);
  g->entities = malloc(sizeof(Entities));
  g->entities->entities = malloc(10 * sizeof(Entity*));
  g->entities->count = 0;
  g->entities->capacity = 10;
}

void add_entity(Game *g, Entity *e) {
  if (g->entities->count >= g->entities->capacity) {
    g->entities->capacity *= 2;
    g->entities->entities = realloc(g->entities->entities, g->entities->capacity * sizeof(Entity*));
  }
  g->entities->entities[g->entities->count++] = e;
}

void handle_input(Game *g) {
  handle_player_input(g->player);
  if (IsKeyPressed(KEY_S)) {
    add_entity(g, spawn_enemy());
  }
  if (IsKeyPressed(KEY_SPACE)) {
    add_entity(g, spawn_bullet(g->player->position));
  }
}

void run_frame(Game *g) {
  handle_input(g);
  move_player(g->player);
  FOREACH_ENTITY {
    INIT_ENTITY;
    e->tick(e, GetFrameTime());
  }
}

void draw_frame(Game *g) {
  BeginDrawing();
  ClearBackground(RAYWHITE);
  draw_player(g->player);
  FOREACH_ENTITY {
    INIT_ENTITY;
    e->draw(e);
  }
  EndDrawing();
}

void run_until_closing(Game *g) {
  while (!WindowShouldClose() && !g->should_close) {
    run_frame(g);
    draw_frame(g);
  }
}