ShakeScreenBackground (int delay, int amount, int length)
Shakes the screen to simulate, for example, an earthquake. The game is not paused
while the screen shakes - it will continue in the background.
DELAY specifies the 'shakiness' of the shake - 2 is the lowest you can pass for this,
and will create the most shaky screen.
AMOUNT specifies the ferociousness of the shake - ie. how much the screen moves by when it
does shake. Here, 1 is a very tiny shake, up to about 30 for a ferocious shake.
LENGTH specifies how long the shake lasts for, in game loops. For example, 80 would be
equivalent to 2 seconds at the default game speed.
You can abort any current background shake that is in progress by calling this command
with the LENGTH parameter as zero.
Example:
ShakeScreenBackground (4, 10, 80);
will shake the screen a little for 2 seconds.
See Also: ShakeScreen
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