/tg/ Station 13 - Modules - TypesDefine Details

code/__DEFINES/maths.dm

SIGNGets the sign of x, returns -1 if negative, 0 if 0, 1 if positive
WRAP_UPIncrements a value and wraps it if it exceeds some value. Can be used to circularly iterate through a list through idx = WRAP_UP(idx, length_of_list).
TOBITSHIFTGets shift x that would be required the bitflag (1<<x) We need the round because log has floating-point inaccuracy, and if we undershoot at all on list indexing we'll get the wrong index.
DT_PROB_RATEConverts a probability/second chance to probability/delta_time 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*DT_PROB_RATE(0.1, 5)))
DT_PROBLike DT_PROB_RATE but easier to use, simply put if(DT_PROB(10, 5))
DIAMOND_AREAThe number of cells in a taxicab circle (rasterized diamond) of radius X.

Define Details

DIAMOND_AREA

The number of cells in a taxicab circle (rasterized diamond) of radius X.

DT_PROB

Like DT_PROB_RATE but easier to use, simply put if(DT_PROB(10, 5))

DT_PROB_RATE

Converts a probability/second chance to probability/delta_time 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*DT_PROB_RATE(0.1, 5)))

SIGN

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

TOBITSHIFT

Gets shift x that would be required the bitflag (1<<x) We need the round because log has floating-point inaccuracy, and if we undershoot at all on list indexing we'll get the wrong index.

WRAP_UP

Increments a value and wraps it if it exceeds some value. Can be used to circularly iterate through a list through idx = WRAP_UP(idx, length_of_list).