code/__DEFINES/maths.dm 
| SIGN | Gets the sign of x, returns -1 if negative, 0 if 0, 1 if positive |
|---|---|
| DIGITS | Returns the number of digits in a number. Only works on whole numbers. This is marginally faster than string interpolation -> length |
| 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). |
| INVERSE_LERP | Performs an inverse linear interpolation between a, b, and a provided value between a and b This returns the amount that you would need to feed into a lerp between A and B to return the third value |
| 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. |
| 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)) |
| DIAMOND_AREA | The number of cells in a taxicab circle (rasterized diamond) of radius X. |
| RANDOM_DECIMAL | Returns a random decimal between x and y. |
Define Details
DIAMOND_AREA
The number of cells in a taxicab circle (rasterized diamond) of radius X.
DIGITS
Returns the number of digits in a number. Only works on whole numbers. This is marginally faster than string interpolation -> length
INVERSE_LERP
Performs an inverse linear interpolation between a, b, and a provided value between a and b This returns the amount that you would need to feed into a lerp between A and B to return the third value
RANDOM_DECIMAL
Returns a random decimal between x and y.
SIGN
Gets the sign of x, returns -1 if negative, 0 if 0, 1 if positive
SPT_PROB
Like SPT_PROB_RATE but easier to use, simply put if(SPT_PROB(10, 5))
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)))
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).