#include <iostream>
#include <string>
 
using namespace std;
 
int penup(int &pen);
int pendown(int &pen);
int left_turn(int &dir);
int right_turn(int &dir);
int move(int &current_y,int &current_x);
int getcommand(int &command);
 
	const int y=20;
	const int x=20;
	int dir=1;
	int floor[y][x];
	int current_y=0;
	int current_x=0;
	int pen=1;
	int moves;
	int command;
	int i;
	int j;
 
 
int main()
{
 
	int again=1;
 
	if(again==1)
	{
			int dir=1;
	int floor[y][x];
	int current_y=0;
	int current_x=0;
	int pen=1;
	}
 
 
	for(i=0;i<=y;++i)
	{
		for(j=0;j<=x;++j)
		{
			floor[i][j]=0;
		}
	}
 
 
while(again!=2)
{
	do
	{
		if(pen==1)
		{
			cout << "current pen position is up!" << endl;
		}
		else
		{
			cout << "current pen position is down!" << endl;
		}
		if(dir==0)
		{
			cout<< "current direction is up!" << endl;
		}
		else if(dir==1)
		{
			cout << "current direction is right!" << endl;
		}
		else if (dir==2)
		{
			cout << "current direction is down!" << endl;
		}
		else if(dir==3)
		{
			cout << "current direction is left!" << endl;
		}
		cout << "current position are: (" << current_x << " ," <<
			current_y << ")\n\n";
 
		cout << "please enter your command: ";
			cin >> command;
			cout << "\n\n";
 
			getcommand(command);
 
 
	}while(command!=9);
 
	cout << "do you want to draw again? (1=yes , 2=no)";
	cin >> again;
 
	if(again!=1||2)
	{
		while(again!=1||2)
		{
			cout <<  "That was an incorrect input!\n" << "do you want to draw again? (1=yes , 2=no)";
			cin>>again;
		}
	}
 
 
}
return 0;
 
}
 
int getcommand(int &command)
{
		if (command==1)
			{
				penup(pen);
			}
		else if (command==2)
			{
				pendown(pen);
			}
		else if (command==3)
			{
				right_turn(dir);
			}
		else if (command==4)
			{
				left_turn(dir);
			}
		else if (command==5)
			{
				cout << "please enter how many moves you want: ";
				cin >> moves;
				move(current_y,current_x);
			}
		else if (command==6)
			{
					system("cls");
					for(i=0;i<=y;++i)
						{
							for(j=0;j<=x;++j)
								{
									if(floor[i][j]==0)
										{
											cout << " ";
										}
									else if(floor[i][j]==1)
										{
											cout << "*";
										}
								}
							cout << endl;
						}
			}
		else if (command==9)
		{
		}
 
		else
			{
				cout << "you did not put a correct command. please try again.";
 
			}
			return command;
}
 
 
	int penup(int &pen)
	{
		pen=1;
 
		return pen;
	}
	int pendown(int &pen)
	{
		pen=2;
 
		return pen;
	}
	int left_turn(int &dir)
	{
		--dir;
		if(dir<0)
		{
			dir=3;
		}
		return dir;
	}
	int right_turn(int &dir)
	{
		++dir;
		if(dir>3)
		{
			dir=0;
		}
		return dir;
	}
	int move(int &current_y,int &current_x)
	{
		if(pen==1)
		{
			if(dir==0)
			{
				while((moves>0)&&(current_y>=0))
				{
					--current_y;
					--moves;
				}
			}
			else if(dir==1)
			{
				while((moves>0)&&(current_x<=19))
				{
 
					++current_x;
					--moves;
				}
			}
			else if(dir==2)
			{
				while((moves>0)&&(current_y<=19))
				{
 
					++current_y;
					--moves;
				}
			}
			else if(dir==3)
			{
				while((moves>0)&&(current_x>=0))
				{
 
					--current_x;
					--moves;
				}
			}
		}
		else if(pen==2)
		{
			if(dir==0)
			{
				while((moves>0)&&(current_y>=0))
				{
 
					floor[current_y][current_x]=1;
					--current_y;
					--moves;
				}
			}
			else if(dir==1)
			{
				while((moves>0)&&(current_x<=19))
				{
 
					floor[current_y][current_x]=1;
					++current_x;
					--moves;
				}
			}
			else if(dir==2)
			{
				while((moves>0)&&(current_y<=19))
				{
 
					floor[current_y][current_x]=1;
					++current_y;
					--moves;
				}
			}
			else if(dir==3)
			{
				while((moves>0)&&(current_x>=0))
				{
 
					floor[current_y][current_x]=1;
					--current_x;
					--moves;
				}
			}
 
		}
		return current_y,current_x;
	}