PureBasic Forums - English

Posted: **Thu Feb 02, 2006 2:58 am**

Hi Everyone!

I can't seem to get the ball to bounce off the sides of the screen. I have tried

if ball_x_position > 432
ball_x_position = -ball_x_position
endif

And

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if ball_x_position > 432
ball_x_position = Abs(-ball_x_position)
endif

heres the code:

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fixed by changing the ball's velocity instead of the balls position

any ideas?

Posted: **Thu Feb 02, 2006 12:56 pm**

You need to change the velocity when you detect the wall, not the position!

Try this....

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Removed due to request from author who doesn't want anyone to pirate his game!

To be honest with you, I don't think there will be many programmers in the world who has not written a pong/breakout game. Everytime I have learned a new language the first thig I usually do is code a Pong/Breakout game.

And believe me when I say that no programmer is going to pirate/purloin/copy your code unless they are an absolute beginner!

If you do manage to write an original piece of software which uses techniques that are currently unknown then you should not post it in a forum for everyone to see!

Good Luck with your game

Posted: **Thu Feb 02, 2006 9:07 pm**

Oh my god, Thank You. I'm now back on track.

Posted: **Fri Feb 03, 2006 4:11 pm**

Or maybe not

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PrintScores:Needed if StartDrawing()
CloseWindow:Still not fixed

Function PrintScores doesn't work and #PB_Event_CloseWindow in my main event loop doesn't work. Any ideas?

Posted: **Sun Feb 05, 2006 11:07 pm**

Anyone want to help me out?

Posted: **Sun Feb 05, 2006 11:15 pm**

You really should read up some more in the manual!! You need to check for the close window event in the little event loop that you have, the last event isn't necessary the close event! Also you probably need 'StartDrawing()'-'EndDrawing()' inside your printscore procedure.

Posted: **Tue Feb 07, 2006 1:58 am**

Problems Aarg

I created a function that Pauses and Unpauses my game when the P key is pressed. I managed to get it to pause but, for some reason it woun't unpause when the p key is pressed again. I coded my loop accordingly and have the examinekeyboard() event in the pause loop, so i don't quite understand what i'm doing wrong.

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fixed with code posted by Dare2

Any ideas?

Posted: **Tue Feb 07, 2006 2:09 am**

Without testing anything, just hazarding a guess. This line

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While ~ KeyboardPushed(#PB_Key_P)

uses ~ which is a Bitwise NOT.

Perhaps try something like:

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Repeat
  delay(1)
  ExamineKeyboard()
Until KeyboardPushed(#PB_Key_P)

BTW, in version 4.00 we now have a NOT, so If Not something works.

Hope that was it, if Not

, sorry!

Posted: **Tue Feb 07, 2006 2:11 am**

Well thats what i thought, i imagined that PB had a NOT operator like most programming languages do. Guess it does, atleast NOT yet.

As for 4.0, i will be using it once its stable enough.

Posted: **Sun Feb 12, 2006 12:18 am**

I have tried to fix this for awhile now and i coun't figure it out.

Problem 1: After a player wins its supposed to show a congrates message and delay a sec so the player can see the win message. The delay happens but, the scores don't switch to the win message. The game simply delays and the message don't get updated when a score reaches 15.

Problem 2:After the win message the game is supposed to reopen the title screen after the initial delay and closing of the game window. Instead it delays, closes the game window, and ends.

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1.Fixed by moving Flip() so that it is the last event that is executed in the game loop.

2.PB Bug. Will be fixed in Next PB 4 Beta.

Posted: **Sun Feb 12, 2006 11:22 pm**

No one has an answer to my problem?

Posted: **Sun Feb 12, 2006 11:36 pm**

Maybe you should flip the buffers before the delay..

BTW it's pretty hard to get a grip of what your code does when the posted code isn't indented properly. I have to consentrate really hard to see where a procedure starts, ends etc!!

Posted: **Mon Feb 13, 2006 1:27 am**

Thanks that worked. BTW 2 things:

1.I am planning on making this open-source

2.I'll find a way to beautify my code.

Posted: **Mon Feb 13, 2006 4:09 pm**

Any idea on a fix for the second problem? I still can't get it to work. I'm using PureBASIC 4.0 Beta 2.

Posted: **Tue Feb 14, 2006 3:05 pm**

Update:I rechecked the code and it looks fine. I guess this is a PB 4.0 Beta 2 bug.

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Pong Master - WIP Error Help?