Monkey Game Development：Beginner's Guide

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Time for action — controlling the ball with the player's paddle

It's nice to see the ball bounce off the walls, but in a game of Pongo, you need to be able to control the ball with your paddle. So we will implement this now. Follow the given steps:

Let's start with the player paddle. We need a new method that checks the collision of the ball with the player's paddle. Create a new method called CheckPaddleCollP. Please note the return type is Boolean.
```
Method CheckPaddleCollP:Bool()
```
Next, we want to check if the ball is close to the paddle regarding its X position.
```
If bX > 625.0 Then
```
The next check will be if the ball's Y position is between minus 25 pixels and plus 25 pixels from the paddel's Y position. If yes, then return True from this method.
```
If ((bY >= pY-25.0) and (bY <= pY+25.0)) Then
Return True
Endif
```
Now, close off the first If check, return False, because the ball didn't hit the paddle, and then close the method.
```
Endif
Return False
End
```
Ok, now we need to call CheckPaddleCollP from somewhere. We implement it inside the UpdateGame method. We make an If check against CheckPaddleCollP, if it is True and also if the ball's X speed is positive. That means it goes from left to right.
```
UpdateBall() 'Update the ball's position
If CheckPaddleCollP() = True And bdX > 0 Then
```
If the paddle got hit, then first we inverse its X speed and bounce it back.
```
BdX *= -1
```
Next, we want to check where it hit the paddle exactly. In the top area, the ball should bounce upwards. In the lower area, it should bounce downwards. And in the middle, it should bounce back straight. At the end, we will close the former If check.
```
If ((bY - pY) > 7) Then bdY = 1.5
If ((bY - pY) < -7) Then bdY = -1.5
If ((bY - pY) <= 7) And ((bY - pY) >= -7 Then bdY = 0
Endif
```
Ok, save here and test the code again. You are able to play back the ball. For the next step, you can load up the file Pongo_08.Monkey, if you need to.