code/__DEFINES/maths.dm

SIGN	Gets the sign of x, returns -1 if negative, 0 if 0, 1 if positive
SPT_PROB_RATE	Converts a probability/second chance to probability/seconds_per_tick chance For example, if you want an event to happen with a 10% per second chance, but your proc only runs every 5 seconds, do `if(prob(100*SPT_PROB_RATE(0.1, 5)))`
SPT_PROB	Like SPT_PROB_RATE but easier to use, simply put `if(SPT_PROB(10, 5))`

Define Details

#define
SIGN
(x)

Gets the sign of x, returns -1 if negative, 0 if 0, 1 if positive

#define
SPT_PROB
(prob_per_second_percent, seconds_per_tick)

Like SPT_PROB_RATE but easier to use, simply put if(SPT_PROB(10, 5))

#define
SPT_PROB_RATE
(prob_per_second, seconds_per_tick)

Converts a probability/second chance to probability/seconds_per_tick chance For example, if you want an event to happen with a 10% per second chance, but your proc only runs every 5 seconds, do if(prob(100*SPT_PROB_RATE(0.1, 5)))