Snake

#include <iostream>
#include <windows.h>
#include <winbase.h>

using namespace std;

const int FieldWidth = 50;
const int FieldHeigth = 30;
const int Area= FieldWidth*FieldHeigth;
unsigned char Field [FieldWidth*FieldHeigth];
int Body[100];
int Direction=1;
int Length = 2;
int StartTime;
int Delay=100;
int bbq;
bool alive=true;

#include <stdlib.h>
#include <time.h>

void DrawScreen();
void CheckDirection();

void CreateSnake();
void Food();
void MoveSnake();
void GameOver();
void PutTheSnakeInTheField();

int main()
{
	srand ( time(NULL) );
	CreateSnake();
	Food();
	StartTime=GetTickCount();

	while(alive)
	{
		if((int)GetTickCount()>(StartTime+Delay))
		{
			system("cls");
			StartTime=GetTickCount();
			CheckDirection();
			PutTheSnakeInTheField();
			DrawScreen();
		}
		Sleep(10);
		
		
	}
	

	system("pause");
	return 0;


}

void DrawScreen()
{
	if(!alive)
	{
		for(int i=0; i<Area;i++)
		{
			Field[i]=176;
		}
	}
	for(int i=0; i <(FieldWidth+2);i++)
	{
		cout<<"#";
	}
	cout<<endl;
	
	for(int i=0; i<FieldHeigth; i++)
	{
		cout<<"#";
		for (int j =0;j<FieldWidth; j++)
		{
			cout<< Field [(FieldWidth*i)+j];
		}
		cout<<"#";
		cout<<endl;
	}
	for(int k=0; k <(FieldWidth+2);k++)
	{
		cout<<"#";
	}
	cout<<endl;
	
}

void CreateSnake()
{
	Body[0]=Area/2-FieldWidth/2;
	Body[1]=Area/2-FieldWidth/2-1;
	Body[2]=Area/2-FieldWidth/2-2;
}

void Food()
{
	
	do
	{
		bbq = rand()%Area;
	}while(Field[bbq]);
	Field[bbq]=229;
}

void PutTheSnakeInTheField()
{
	if(Body[0]+Direction==bbq)
	{
		Length++;
		Food();
	}
	else if((Field[Body[0]+Direction])==167)GameOver();
	else
	{
		switch(Direction)
		{
			case 1:
				if(!((Body[0]+1)%FieldWidth))GameOver();
				break;
			case (FieldWidth):
				if((Body[0]/FieldWidth)==FieldHeigth-1)GameOver();
				break;
			case -1:
				if(!(Body[0]%FieldWidth))GameOver();
				break;
			case (-FieldWidth):
				if(!(Body[0]/FieldWidth))GameOver();
				break;
		}
		Field[Body[Length]]='\0';
	}
	MoveSnake();
	Field[Body[0]]=235;
	for(int i=1;i<Length;i++)
	{
		Field[Body[i]]=167;
	}
}


void MoveSnake()
{
	for(int i=Length;i>0;i--)
	{
		Body[i]=Body[i-1];//klopt dit wel? //yup, als een bus
	}
	Body[0]=Body[0]+Direction;
}

void GameOver()
{
	alive=0;
}

void CheckDirection()
{
	if(GetAsyncKeyState(VK_LEFT)&&!(Direction==1))
	{
		Direction=-1;
	}
	else if(GetAsyncKeyState(VK_UP)&&!(Direction==FieldWidth))
	{
		Direction=-FieldWidth;
	}
	else if(GetAsyncKeyState(VK_RIGHT)&&!(Direction==-1))
	{
		Direction=1;
	}
	else if(GetAsyncKeyState(VK_DOWN)&&!(Direction==-FieldWidth))
	{
		Direction=FieldWidth;
	}
}