#define OLC_PGE_APPLICATION
#include "pixelGameEngine.h"

using namespace olc;

class Room{
	public:
		Room*DoorS=nullptr;
		Room*DoorE=nullptr;
		Room*DoorW=nullptr;
		Room*DoorN=nullptr;
		std::string roomName;
		Room(){};
		Room(std::string name):roomName(name){};
};

class DoorGame : public olc::PixelGameEngine
{
public:
	Room*CURRENT_ROOM;
	DoorGame()
	{
		sAppName = "Rooms example";
	}

public:
	bool OnUserCreate() override
	{
		Room*WEST_ROOM=new Room("West Room");
		Room*MAIN_HANGAR=new Room("Main Hangar");
		Room*NORTH_ROOM=new Room("North Room");
		Room*SOUTH_ROOM=new Room("South Room");
		Room*EAST_HALLWAY=new Room("East Hallway");
		Room*EAST_EXIT=new Room("East Exit");

		//West Room has an east door leading to Main Hangar.
		WEST_ROOM->DoorE=MAIN_HANGAR;

		//The Main hangar has 4 doors each leading to other places...
		MAIN_HANGAR->DoorW=WEST_ROOM;
		MAIN_HANGAR->DoorS=SOUTH_ROOM;
		MAIN_HANGAR->DoorE=EAST_HALLWAY;
		MAIN_HANGAR->DoorN=NORTH_ROOM;

		//The North room has a south door leading to Main Hangar.
		NORTH_ROOM->DoorS=MAIN_HANGAR;

		//The South room has a north door leading to Main Hangar.
		SOUTH_ROOM->DoorN=MAIN_HANGAR;

		//The East Hallway has a west door leading to Main Hangar and an east door leading to the exit.
		EAST_HALLWAY->DoorW=MAIN_HANGAR;
		EAST_HALLWAY->DoorE=EAST_EXIT;

		//The East Exit has a west door leading to the East Hallway.
		EAST_EXIT->DoorW=EAST_HALLWAY;

		CURRENT_ROOM=MAIN_HANGAR; //Let's start in the Main Hangar.
		TextEntryEnable(true);
		return true;
	}

	void OnTextEntryComplete(const std::string&str)override{
		if (str.compare("north")==0&&CURRENT_ROOM->DoorN!=nullptr) {
			CURRENT_ROOM=CURRENT_ROOM->DoorN;
		}
		if (str.compare("east")==0&&CURRENT_ROOM->DoorE!=nullptr) {
			CURRENT_ROOM=CURRENT_ROOM->DoorE;
		}
		if (str.compare("west")==0&&CURRENT_ROOM->DoorW!=nullptr) {
			CURRENT_ROOM=CURRENT_ROOM->DoorW;
		}
		if (str.compare("south")==0&&CURRENT_ROOM->DoorS!=nullptr) {
			CURRENT_ROOM=CURRENT_ROOM->DoorS;
		}
	}

	bool OnUserUpdate(float fElapsedTime) override
	{
		if (!IsTextEntryEnabled()) {
			TextEntryEnable(true);
		} 

		DrawStringDecal({0,0},"You are in the "+CURRENT_ROOM->roomName+".");

		vi2d doorTextOffset={0,24};
		vi2d mapCenterPos={256/2-16,240-64};
		for (int i=0;i<4;i++) {
			switch (i) {
				case 0:{
					if (CURRENT_ROOM->DoorN!=nullptr) { //See if there's a door to the north.
						DrawStringDecal(doorTextOffset,"You see a door to your North.");
						vi2d northSquarePos={0,-16};
						FillRectDecal(mapCenterPos+northSquarePos,{16,16},BLUE);
						doorTextOffset.y+=16;
					}
				}break;
				case 1:{
					if (CURRENT_ROOM->DoorE!=nullptr) { //See if there's a door to the east.
						DrawStringDecal(doorTextOffset,"You see a door to the East.");
						vi2d eastSquarePos={16,0};
						FillRectDecal(mapCenterPos+eastSquarePos,{16,16},GREEN);
						doorTextOffset.y+=16;
					}
				}break;
				case 2:{
					if (CURRENT_ROOM->DoorS!=nullptr) { //See if there's a door to the south.
						DrawStringDecal(doorTextOffset,"You see a door South of you.");
						vi2d southSquarePos={0,16};
						FillRectDecal(mapCenterPos+southSquarePos,{16,16},RED);
						doorTextOffset.y+=16;
					}
				}break;
				case 3:{
					if (CURRENT_ROOM->DoorW!=nullptr) { //See if there's a door to the west.
						DrawStringDecal(doorTextOffset,"You see a door on the West side.");
						vi2d westSquarePos={-16,0};
						FillRectDecal(mapCenterPos+westSquarePos,{16,16},YELLOW);
						doorTextOffset.y+=16;
					}
				}break;
			}
		}

		FillRect(mapCenterPos,{16,16});

		DrawStringDecal({2,240-10},"Action: "+TextEntryGetString());
		return true;
	}
};


int main()
{
	DoorGame demo;
	if (demo.Construct(256, 240, 4, 4))
		demo.Start();

	return 0;
}