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Clarify bit meaning in param2 palette (#15225)

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Erich Schubert 2024-10-04 10:42:09 +02:00 • committed by GitHub
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@ -1394,16 +1394,19 @@ The function of `param2` is determined by `paramtype2` in node definition.
The palette should have 256 pixels. The palette should have 256 pixels.
* `paramtype2 = "colorfacedir"` * `paramtype2 = "colorfacedir"`
* Same as `facedir`, but with colors. * Same as `facedir`, but with colors.
* The first three bits of `param2` tells which color is picked from the * The three most significant bits of `param2` tells which color is picked from the
palette. The palette should have 8 pixels. palette. The palette should have 8 pixels.
* The five least significant bits contain the `facedir` value.
* `paramtype2 = "color4dir"` * `paramtype2 = "color4dir"`
* Same as `facedir`, but with colors. * Same as `4dir`, but with colors.
* The first six bits of `param2` tells which color is picked from the * The six most significant bits of `param2` tells which color is picked from the
palette. The palette should have 64 pixels. palette. The palette should have 64 pixels.
* The two least significant bits contain the `4dir` rotation.
* `paramtype2 = "colorwallmounted"` * `paramtype2 = "colorwallmounted"`
* Same as `wallmounted`, but with colors. * Same as `wallmounted`, but with colors.
* The first five bits of `param2` tells which color is picked from the * The five most significant bits of `param2` tells which color is picked from the
palette. The palette should have 32 pixels. palette. The palette should have 32 pixels.
* The three least significant bits contain the `wallmounted` value.
* `paramtype2 = "glasslikeliquidlevel"` * `paramtype2 = "glasslikeliquidlevel"`
* Only valid for "glasslike_framed" or "glasslike_framed_optional" * Only valid for "glasslike_framed" or "glasslike_framed_optional"
drawtypes. "glasslike_framed_optional" nodes are only affected if the drawtypes. "glasslike_framed_optional" nodes are only affected if the
@ -1417,9 +1420,9 @@ The function of `param2` is determined by `paramtype2` in node definition.
* Liquid texture is defined using `special_tiles = {"modname_tilename.png"}` * Liquid texture is defined using `special_tiles = {"modname_tilename.png"}`
* `paramtype2 = "colordegrotate"` * `paramtype2 = "colordegrotate"`
* Same as `degrotate`, but with colors. * Same as `degrotate`, but with colors.
* The first (most-significant) three bits of `param2` tells which color * The three most significant bits of `param2` tells which color is picked
is picked from the palette. The palette should have 8 pixels. from the palette. The palette should have 8 pixels.
* Remaining 5 bits store rotation in range 0–23 (i.e. in 15° steps) * The five least significant bits store rotation in range 0–23 (i.e. in 15° steps)
* `paramtype2 = "none"` * `paramtype2 = "none"`
* `param2` will not be used by the engine and can be used to store * `param2` will not be used by the engine and can be used to store
an arbitrary value an arbitrary value