Car Game - Handling movement

[Rectal Exambot]

Hello, (Yes I joined this forum so I could ask questions, sorry guys)

I am currently making a car based java game and was wondering how to handle movements? It is topdown and I am not sure exactly how to do it.

Currently I have acceleration and angle [as doubles], W is accelerate, S is break (slows the acceleration and if held when you have no acceleration you go back slowly [reverse]) and D/A changes angles.

How can I make it so based on the angle, he moves relative to the screen? Say if you hold W you move down the Y axis, but pressing the A key makes you move both up the X axis and down the Y axis. So the car goes to the bottom right of the screen?

This is what I currently have, its pretty fail I have just been testing things out and I know it doesn't work and I know why, I just don't know how to make it awesome.

	

	public void keyPressed(KeyEvent e) 
	{
		
		if (e.getKeyCode() == KeyEvent.VK_W) 
		{
			accelerate = true;
		}
		else if (e.getKeyCode() == KeyEvent.VK_S)  
		{
			brake = true;
		} 
		else if (e.getKeyCode() == KeyEvent.VK_A) 
		{
			turnLeft = true;
		} 
		else if (e.getKeyCode() == KeyEvent.VK_D)  
		{
			turnRight = true;
		} 

	}

	@Override
	public void keyReleased(KeyEvent e) 
	{
		
		if (e.getKeyCode() == KeyEvent.VK_W) 
		{
			accelerate = false;
		}
		else if (e.getKeyCode() == KeyEvent.VK_S)  
		{
			brake = false;
		} 
		else if (e.getKeyCode() == KeyEvent.VK_A) 
		{
			turnLeft = false;
		} 
		else if (e.getKeyCode() == KeyEvent.VK_D)  
		{
			turnRight = false;
		} 
		
	}

	@Override
	public void keyTyped(KeyEvent e) 
	{
		// TODO Auto-generated method stub

	}

	@Override
	void draw(Graphics g) 
	{
		Graphics2D g2 = (Graphics2D) g;		
		Rectangle car = new Rectangle((int) x,(int) y,10,10);
		g2.draw(car);
		
	}

	@Override
	void step() 
	{
		
		if (accelerate)
		{
			
			acceleration += 1.5;
			
		}
		else if (brake)
		{
						
			acceleration -= 0.5;

		}
		
		if (angle == 3)
		{
			
			yVel = acceleration;
			xVel = 0.0;
			
		}
		else if (angle == 5)
		{
			
			yVel = 0.0;
			xVel = acceleration;			
			
		}

		else if (angle == 1)
		{
			
			xVel = -acceleration;
			yVel = 0.0;			
			
		}
		
		x += xVel;
		y += yVel;

[Norm]

How are you changing the position of the car?
You can change the car's position (x,y) when a key is pressed by changing the value of the car's position(the x and/or y) and then calling repaint() for the new position to be shown.

[Rectal Exambot]

I can make it so A makes the care move Left and W fowards. But since it is a car I would like W to go fowards and depending on the value of the angle he would go in that direction. I know how to redraw/repaint but I don't know how to calculate the angle, or the new x and y for the next draw/paint.

For example If I pressed D for a second, I want to go maybe y+= 1 and x+= 3 because he is now facing right instead of straight ahead, but I don't know how to calculate that.

Edit: I think I solved

x += acel(sin angle);
y += acel(sin(90-angle));

Just had to use good old sin rules...