Hello!

I'd like to request a little bit help.
I've started to write a "Pong" clone as advised, and I have arrived to the first problem I can't figure out how to solve.

I made two paddles, and I'm planning to make possible the game play for 2 players using the same keyboard at the same time. The left paddle is moving if 'W' or 'S' keys are pressed, while the right paddle is moved by the 'Up Arrow' or the 'Down Arrow' keys.

My problem is, if I press 'W' or 'S', it moves the left paddle as supposed, but if I press one of the arrow keys at the same time the left paddle gets ignored and vice versa.

I've tried to separate the movements to different threads, but I still can't find the correct way.

I basically check if the KeyEvent.getKeyCode() returned in the keyPressed() method is equals to the keyCode of the keys listed and then call the movement method with the appropriate params.

I'd prefer if You could point out where I fail or explain it with pseudo code.

Thanks in advance,
zilik

p.s: I'm running ubuntu linux 10.10 "maverick"

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If you're using if..else if statements, then only 1 of them is going to fire off (the first true one). You could have separate if statements for player 1 and 2 and then it wouldn't conflict.

The other possible problem could be that your keyboard just doesn't support pressing a lot of keys at the same time. There are some pretty funky problems that can crop up with this.

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I've used if; if; if; if; statements.

However, my I'm trying something other now:
I will use the keyPeressed() method to set boolean values (_KEY_DOWN) to true and keyReleased() to set them false, and I will handle the movement in my run() method according to those boolean values.

I have to change a few things, but I hope it will be better.

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I hit two birds with one stone. It fixed my problem without using new threads and besides that, it made the paddle's movement much smoother.

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