/******************************************************************************
*	File		-	world.cpp
*	Author		-	Joey Pollack
*	Date		-	2022/01/12 (y/m/d)
*	Mod Date	-	2022/01/20 (y/m/d)
*	Description	-	Manages a game "world". A world is made up of regions which
*                   are subdivisions of the world. Each region contains: a set 
*                   of images for the maps layers, a list of objects that spawn
*                   in this region and static collision data.
******************************************************************************/

#include "world.h"
#include <utils/logger.h>
#include <assets/types/script.h>
#include <assets/types/image.h>
#include <graphics/graphics.h>
#include <graphics/camera.h>
#include "entity.h"

namespace lunarium
{
    // World::World(Camera* pCam, Sizei region_size, Sizei world_size)
    //     : mpCamera(pCam), mRegionSize(region_size), mpWorldScript(nullptr), mWorldSize(world_size)
    // {
    //     mActiveRegion = { 0, 0 };
    // }

    World::World()
    {

    }

    void World::OnLoad()
    {
        // TODO: Call OnLoad in the world script and on each region script
    }
    
    void World::OnUnload()
    {
        // TODO: Call OnUnLoad in the world script and on each region script
    }
    
    void World::Update(float dt)
    {
        // TODO: Call Update in the world script and on each region script
    }
    
    void World::Render(Graphics* pGraphics) const
    {
        // TODO: Call Render in the world script and on each region
    }
    
    void World::RenderToTexture(Graphics* pGraphics, Image* pTexture) const
    {

    }
    

    entt::registry* World::GetEntityRegistry()
    {
        return &mECSRegistry;
    }

    LUUID World::CreateEntity()
    {
        //Logger::Error(LogCategory::GAME_SYSTEM, "World::CreateEntity not implemented!");
        Entity* new_ent = new Entity(*this);

        if (mEntitiesByUUID.find(new_ent->GetUUID()) != mEntitiesByUUID.end())
        {
            Logger::Warn(LogCategory::GAME_SYSTEM, "UUID collision when creating new entity! UUID: %d", new_ent->GetUUID());
        }

        mEntitiesByUUID[new_ent->GetUUID()] = new_ent;
        mEntities.push_back(new_ent);
        return new_ent->GetUUID();
    }

    
    Entity* World::GetEntity(LUUID id)
    {
        if (mEntitiesByUUID.find(id) == mEntitiesByUUID.end())
        {
            Logger::Warn(LogCategory::GAME_SYSTEM, "Entity with id: %d not found.", id);
        }
        return mEntitiesByUUID[id];
    }

    unsigned int World::GetNumEntities() const
    {
        return mEntities.size();
    }
    
    std::vector<Entity*>::iterator World::EntitiesBegin()
    {
        return mEntities.begin();
    }

    bool World::EntitiesIsEnd(std::vector<Entity*>::iterator& iter)
    {
        return iter == mEntities.end();
    }

}