Game Maker Programming/Mathematical calculations
GameMaker can perform mathematical functions on integers, on variables containing integers. Writing in code:
2*2
would equal 4. If a=2, then:
a*a
would also equal 4. Game Maker can perform basic addition, multiplication, subtraction and division, as well as square rooting, as shown below:
sqrt(integer);
| random(x) | Random decimal number between 0 and x (including 0, but not x). |
| random_range(x,y) | Random decimal number between x and y (including x, but not y). |
| abs(x) | Absolute value of x. |
| sign(x) | Sign of x (-1, 0, or 1) |
| round(x) | Round to nearest integer. (.5 rounds to nearest even.) |
| floor, ceil(x) | Floor and ceiling functions. |
| frac(x) | Returns fractional portion. |
| sqrt(x) | Square root. |
| power(x,n) | xn |
| exp(x) | ex |
| ln(x) | Natural log of x (loge x) |
| log2(x) | Log 2 of x. |
| log10(x) | Log 10 of x. |
| logn(n,x) | Log of base n of x. |
| sin (x), cos(x), tan(x) | Sin, cos or tan of x. |
| arcsin, arccos, arctan(x) | Inverse sin, cos or tan of x. |
| arctan2(y, x) | arctan(y/x). returns angle in correct quadrant. |
| degtorad(x), radtodeg(x) | Converts between degrees and radians. |
| min(...), max(...), mean(...), median(...) | Returns min, max, mean or median of all arguments. |
| point_distance(x1, y1, x2, y2) | Returns distance between two points. |
| point_direction(x1, y1, x2, y2) | Returns direction from (x1, y1) to (x2,y2) in degrees. |
| lengthdir_x(len, dir), lengthdir_y(len, dir) | Returns x or y component of the indicated length and direction. |