#include "pch.h"
#include "snake.h"

//#define DEBUG

//////////////////////////////////////DEFAULT SETTINGS, STRUCTURE
#define MAPSIZE 50

using namespace std;

bool Game = TRUE;

const int Coord_X = MAPSIZE;
const int Coord_Y = Coord_X / 2;

int CharCoord_X = 0;
int CharCoord_Y = 0;

int XS1, XS2, YS1, YS2;

int Score = 0;

#ifdef DEBUG
int *BonusCoord_X = new int();
int *BonusCoord_Y = new int();
#else
int BonusCoord_X = 0;
int BonusCoord_Y = 0;
#endif

bool TOP, BOTTOM, LEFT, RIGHT;

//////////////////////////////////////CONSTRUCTOR
Snake::Snake()
{
	srand(time(0));
}

//////////////////////////////////////DESTRUCTOR
Snake::~Snake()
{
#ifdef DEBUG
	delete BonusCoord_X, BonusCoord_Y;
	BonusCoord_X = NULL;
	BonusCoord_Y = NULL;
#endif
}

//////////////////////////////////////Random()
void Snake::Random()
{
	BonusCoord_X = rand() % (Coord_X - 10) + 5;
	BonusCoord_Y = rand() % (Coord_Y - 10) + 5;
}

//////////////////////////////////////GameOver()
void Snake::GameOver()
{
	Game = FALSE;
	cout << "#############[GAME OVER]#############" << endl << "[Enter - New Game]" << endl << "SCORE: " << Score << endl;
	cin.get();
	TOP = FALSE;
	BOTTOM = FALSE;
	LEFT = FALSE;
	RIGHT = FALSE;
	CharCoord_X = Coord_X / 2;
	CharCoord_Y = Coord_Y / 2;
#ifdef DEBUG
	*BonusCoord_X = rand() % (Coord_X - 2) + 2;
	*BonusCoord_Y = rand() % (Coord_Y - 2) + 2;
#else
	Random();
#endif
	Score = 0;
	Game = TRUE;
}

//////////////////////////////////////Keyboard()
void Snake::Keyboard()
{
	while (_kbhit())
	{
		char arrows = _getch();
		switch (arrows)
		{
			case 'w':
				if (!(BOTTOM))
				{
					TOP = TRUE;
					BOTTOM = FALSE;
					LEFT = FALSE;
					RIGHT = FALSE;
				}
				break;
			case 's':
				if (!(TOP))
				{
					TOP = FALSE;
					BOTTOM = TRUE;
					LEFT = FALSE;
					RIGHT = FALSE;
				}
				break;
			case 'a':
				if (!(RIGHT))
				{
					TOP = FALSE;
					BOTTOM = FALSE;
					LEFT = TRUE;
					RIGHT = FALSE;
				}
				break;
			case 'd':
				if (!(LEFT))
				{
					TOP = FALSE;
					BOTTOM = FALSE;
					LEFT = FALSE;
					RIGHT = TRUE;
				}
				break;
		default:
			break;
		}
	}
	if (TOP)
		if ((CharCoord_Y > 1))
			CharCoord_Y -= 1;
		else
			GameOver();

	if (BOTTOM)
		if ((CharCoord_Y < Coord_Y - 2))
			CharCoord_Y += 1;
		else
			GameOver();

	if (LEFT)
		if ((CharCoord_X > 1))
			CharCoord_X -= 1;
		else
			GameOver();

	if (RIGHT)
		if ((CharCoord_X < Coord_X - 2))
			CharCoord_X += 1;
		else
			GameOver();
}

//////////////////////////////////////CoordStore()
void Snake::CoordStore(int opt, int x, int y)
{
	switch (opt)
	{
		case 0:
			{
				XS1 = x;
				YS1 = y;
			}
			break;
		case 1:
			{
				XS2 = x;
				YS2 = y;
				if (XS1 == XS2 && YS1 == YS2)
				{
					Random();
					Score += 5;
				}
			}
			break;
		default:
			break;
	}
}

//////////////////////////////////////InitGame()
void Snake::InitGame(const int x, const int y)
{
	CharCoord_X = Coord_X / 2;
	CharCoord_Y = Coord_Y / 2;

#ifdef DEBUG
	*BonusCoord_X = rand() % (Coord_X - 2) + 2;
	*BonusCoord_Y = rand() % (Coord_Y - 2) + 2;
#else
	Random();
#endif

	while (Game)
	{
		if (Score > 4*4 && Score < 10*4)
		{
			system("color 0a");
		}
		else if (Score > 9*4 && Score < 14*4)
		{
			system("color 0c");
		}
		Keyboard();
		CoordStore(0, BonusCoord_X, BonusCoord_Y);
		cout << "Score: " << Score << endl;
		for (int i = 0; i < y; i++)
		{
			for (int j = 0; j < x; j++)
			{
				if (i < 1)
				{
					cout << "#";
				}
				else if (i > 0 && i < Coord_Y - 1)
				{
					if (j > 0 && j < Coord_X - 1)
					{
						if (j == CharCoord_X && i == CharCoord_Y)
						{
							CoordStore(1, j, i);
							cout << "O";
						}
#ifdef DEBUG
						else if (j == *BonusCoord_X && i == *BonusCoord_Y)
						{
							CoordStore(1, *BonusCoord_X, *BonusCoord_Y);
							cout << "F";
						}
#else
						else if (j == BonusCoord_X && i == BonusCoord_Y)
						{
							cout << "F";
						}
#endif
						else
						{
							cout << " ";
						}
					}
					else
					{
						cout << "#";
					}
				}
				else
				{
					cout << "#";
				}
			}
			cout << endl;
		}
		system("cls");
		Sleep(30);
	}
}

//////////////////////////////////////main()
int main()
{
	Snake _Snake;
	_Snake.InitGame(Coord_X, Coord_Y);
}