#include <iostream>

#include "windows.h"

using namespace std;



// the maps followed by their height values

char map1[10][80] =

{

	"X-----------------X-----------------X-----------------X-----------------X-----X",

	"|*                |                 |                 |                 |     |",

	"|                 |                 /                 |                 |     |",

	"|                 |                 |                 |                 |     |",

	"|                 |                 |                 |                 /     |",

	"|         ~       |                 |                 /                 |     |",

	"|                 /                 |                 |                 |     |",

	"|                 |                 |                 |                 |     |",

	"X-----------------X-----------------X-----------------X-----------------X-----X"

};

char map2[20][40] =

{

	"X-------------------------------------X",

	"|                                     |",

	"|                                     |",

	"|                                    *|",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"|                                     |",

	"X-------------------------------------X"

};



int map1height=10, map1width=80, map2height=20, map2width=40;

char currentMap[50][100]; //max height/width of any given map

int currentHeight, currentWidth;

//players starting position will be 1,1 in coords

int x=1; 					//players current x position

int y=1; 					//players current y position

int next_x, next_y; 		//the next position the player will move to

char standingOn = ' '; 		//the tile the player is currently standing on

bool game_running = true;   //true if the game is running, false = exit game  (nor is this in use)

bool lever = true;         //'~' has not been picked up (not currently in use)



void processInput()

{

	if(GetAsyncKeyState(VK_UP)) next_y = y-1;

	if(GetAsyncKeyState(VK_RIGHT)) next_x = x+1;

	if(GetAsyncKeyState(VK_DOWN)) next_y = y+1;

	if(GetAsyncKeyState(VK_LEFT)) next_x = x-1;

}



void processActions()

{

	switch (map1[next_y][next_x])

	{

		case '~': // Item

			map1[2][74] = '!';

			map1[next_y][next_x] = ' ';

			break; // Prevents players immediately moving upon item space

		case ' ': // Empty space

		case '/': // Door

			map1[y][x] = standingOn; // Replaces door if previous space was a door

			standingOn = map1[next_y][next_x]; // Looks ahead and changes standingOn to the tile we are about to step on

			map1[next_y][next_x] = '*'; // Moves the player to space

			x=next_x; // Update x and y positions

			y=next_y;

			break;

		case '!': // Stairs

			currentMap = map2;

			currentHeight = map2height;

			break;

		default: ;// Cannot perform action on tile

	}   

	

}



void playerMovement()

{

	if(GetAsyncKeyState(VK_DOWN)) //move character down

		{

			if(map1[next_y][x] == ' ') //if below is blank

			{

				map1[y][x] = ' ';

				y++;

				map1[y][x] = '*';



			}

		}



		if(GetAsyncKeyState(VK_UP)) //move character up

		{

			if(map1[next_y][x] == ' ') //if above is blank

			{

				map1[y][x] = ' ';

				y--;

				map1[y][x] = '*';

			}

		}



		if(GetAsyncKeyState(VK_RIGHT)) //move character right

		{

			if(map1[y][next_x] == ' ') //if the right is blank

			{

				map1[y][x] = ' ';

				x++;

				map1[y][x] = '*';

			}

		}



		if(GetAsyncKeyState(VK_LEFT)) //if the left is blank

		{

			if(map1[y][next_x] == ' ')

			{

				map1[y][x] = ' ';

				x--;

				map1[y][x] = '*';

			}

		}

}



void loadMap1()

{

	currentHeight = map1height;

	currentWidth = map1width;

		for(int a=0; a<currentHeight; a++)

			for(int b=0; b<currentWidth; b++)

				currentMap[a][b]=map1[a][b];

}



void loadMap2()

{

	currentHeight = map2height;

	currentWidth = map2width;

		for(int a=0; a<currentHeight; a++)

				for(int b=0; b<currentWidth; b++)

					currentMap[a][b]=map2[a][b];

}



void displayMap()

{

	for(int a=0; a<currentHeight; a++)

		for(int b=0; b<currentWidth; b++)

			cout << currentMap[a][b] << endl;

}



int main()

{

	currentMap = map1;

	currentHeight = map1height;

	currentWidth = map1width;

	

	while(!GetAsyncKeyState(VK_ESCAPE)) //loop runs if the esc key is not being pressed

	{

		displayMap();

		

			cout << endl << endl << "- Arrow keys to move" << endl;

			cout << "- Escape key to exit" << endl;

			



		system("pause>nul"); //so the user doesn't see a flickering screen

		processInput();

		processActions();

		playerMovement();

	

 }

	

	cout << "\nGame Exited";

	return 0;

}