1.6 KiB
Variables and Constants
scarpet provides a number of constants that can be used literally in scripts
null: nothing, zilch, not even falsetrue: pure true, or just 1 (one)false: false truth, or true falsth, 0 (zero) actuallypi: for the fans of perimeters, its a perimeter of an apple pi of diameter 1. About 3.14euler: clever guy. Derivative of its exponent is goto 1. About 2.72
Apart from that, there is a bunch of system variables, that start with _ that are set by scarpet built-ins,
like _, typically each consecutive value in loops, _i indicating iteration, or _a like an accumulator
for reduce function. Certain calls to Minecraft specific calls would also set _x, _y, _z, indicating
block positions. All variables starting with _ are read-only, and cannot be declared and modified in client code.
Literals
scarpet accepts numeric and string liters constants. Numbers look like 1, 2.5, -3e-7, 0xff, and are internally
represented as Java's double but scarpet will try to trim trailing zeros as much as possible so if you need to
use them as intergers, you can. Strings using single quoting, for multiple reasons, but primarily to allow for
easier use of strings inside doubly quoted command arguments (when passing a script as a parameter of /script fill
for example, or when typing in jsons inside scarpet to feed back into a /data merge command for example.
Strings also use backslashes \ for quoting special characters, in both plain strings and regular expressions
'foo'
print('This doesn\'t work')
nbt ~ '\\.foo' // matching '.' as a '.', not 'any character match'