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hey, just trying to get a simple game going...here's my code so far:



the problem is, whenever i dont have sync, only the first command in the loop can be performed....why is that?

if i put sync at the end of the loop it really makes no difference, i just reallly confused, thx for help in advance

p.s. paddle.bmp atttached

i think you need to put "sync on" at the start without the quotaion marks

yep if you drop the sync only the 1st if works.

I think it must be something to do with mousemove() and how it is updated without 'sync'

this works without sync because mousemovey() is only called once per loop:



Its best IMHO to manualy sync anyway.

thx flashing blade, but why cant i just do it without a variable?...why does it skip the 2nd if in the loop?

The following might help:

Sync On turns on manual synching. This means that you have to manually use the Sync command when you need it.

What Sync does is synchronise the screen with the world in your computer's memory.

All the commands which create/move objects can be thought of as 'virtual'. In other words, when they are all executed the objects are 'primed' with the new data. The screen still shows the world in the state prior to these operations.

The Sync command then updates the viewable world on-screen to match the commands that you just issued.

This is why you will notice that 3D object-related errors more often than not will result in the Sync line being highlighted as the cause of the error. For the same reason, temporarily turning Sync On to Sync Off in your program will show the correct error line.

Using the Sync command takes time.

Ideally, you should only have a single Sync in your program - at the end of any loop which traps your program and after all of the 3D udating commands have been executed. Adding more simply slows down your program.

TDK_Man