Orkuncakilkaya
2e0047514b
De-abbreviate the two bare fixed-point conversion builtins:
flr(f) -> int -> floor(f) -> int (fixed -> int, flooring)
fx(i) -> fixed -> fixed(i) -> fixed (int -> fixed; mirrors how the
stringify builtin is `string`)
Updates the compiler dispatch, all call sites, the grammars/LSP/JetBrains
tokens, and the docs (fn-flr -> fn-floor, fn-fx -> fn-fixed). Reseeded;
C-free fixpoint holds; all suites green (45/24/29); site + check.py OK.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
1.1 KiB
1.1 KiB
| id | name | category | kind | tokens | sig | tip | order |
|---|---|---|---|---|---|---|---|
| fn-floor | floor | builtins | builtin | floor | floor(x) -> int | Floor a fixed-point value down to the nearest integer. | 50 |
Converts a fixed (Q16.16) value back to an int by discarding the fractional part, rounding toward negative infinity. It is the counterpart to fx: you accumulate motion in fixed-point for sub-pixel smoothness, then floor the result to get the whole-pixel column or row to draw at. Because it floors rather than rounds, floor(fixed(3) / fixed(2)) is 1, not 2. Use it wherever a fixed value must become an integer coordinate, count, or index.
Parameters:
x— the fixed-point value to floor
program FixedToPixels {
const TILE_SIZE: int = 16
handler DrawWorld phase Render {
Screen.clear(Color.MidnightBlue)
let smooth_column = fixed(5) + fixed(1) / fixed(2)
let pixel_x = floor(smooth_column) * TILE_SIZE
Screen.fill_rectangle(x: pixel_x, y: 32, width: TILE_SIZE, height: TILE_SIZE, color: Color.LimeGreen)
Screen.show()
}
}