Thread: Need help in my ping pong game.

Hello guys, i managed to make the bat move up and down, but i also have to make it move to the right and left.

Code:

void p1Move()
{     p1_tempY = p1_y;     
if( key[KEY_W] && p1_y > 0){
             --p1_y;
                  } else if( key[KEY_S] && p1_y < 420){
             ++p1_y;                  }

So can anybody please help me on how to make the ball move right and left, i know i should do this

Code:

} else if( key[KEY_A] && p1_y < 420){
             ++p1_y;
                  }

But what do i place instead of the 420?

420 is a good number. A very good number. I'm all for that.

However, to move horizontally you will want to modify the x coordinate. Try copying the vertical code and changing the y's to x's (and change the keys as well). And you may not want the high value to be 420. If the paddle is allowed to travel anywhere in the window then you would use the horizontal window size, which is presumably different from the vertical size. But you may want to limit it to something less than that.

The above is for the left-hand paddle. For the right-side paddle you'll want to use the vertical size instead of 0, and 0 (or whatever you want to limit it to) for the other value.

So is this correct?

Code:

} elseif( key[KEY_A] && p1_x < 75){
             --p1_x;
                  }

Originally Posted by algorism

420 is a good number. A very good number. I'm all for that.

However, to move horizontally you will want to modify the x coordinate. Try copying the vertical code and changing the y's to x's (and change the keys as well). And you may not want the high value to be 420. If the paddle is allowed to travel anywhere in the window then you would use the horizontal window size, which is presumably different from the vertical size. But you may want to limit it to something less than that.
The above is for the left-hand paddle. For the right-side paddle you'll want to use the vertical size instead of 0, and 0 (or whatever you want to limit it to) for the other value.

Ok thank you, i managed to do it, but i need to buffer because, the "bat" is sticking to the screen while i move.

Code:

acquire_screen();
    rectfill( buffer, p1_tempX, p1_tempY, p1_tempX + 10, p1_tempY + 60, makecol ( 0, 0, 0));
    rectfill( buffer, p1_x, p1_y, p1_x + 10, p1_y + 60, makecol ( 0, 0, 255));
    release_screen();