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Screwdriver: disallow rotation with `on_rotate = false`

Other screwdriver mods, or mods that cause rotation, might operate without the screwdriver mod loaded and have `screwdriver.disallow` unavailable.
This allows nodes to default to full-disallow rather than full-rotation in such a situation.
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t4im authored and rubenwardy committed Aug 5, 2016
1 parent 60cf3f8 commit 20fa037313d681e5986708b60c1143081aaad318
Showing with 2 additions and 1 deletion.
  1. +1 −1 game_api.txt
  2. +1 −0 mods/screwdriver/init.lua
@@ -348,7 +348,7 @@ To use it, add the `on_screwdriver` function to the node definition.
* `new_param2` the new value of param2 that would have been set if on_rotate wasn't there
* return value: false to disallow rotation, nil to keep default behaviour, true to allow
it but to indicate that changed have already been made (so the screwdriver will wear out)
* use `on_rotate = screwdriver.disallow` to always disallow rotation
* use `on_rotate = false` to always disallow rotation
* use `on_rotate = screwdriver.rotate_simple` to allow only face rotation

@@ -64,6 +64,7 @@ screwdriver.handler = function(itemstack, user, pointed_thing, mode, uses)
if not ndef or not ndef.paramtype2 == "facedir" or
ndef.on_rotate == false or
(ndef.drawtype == "nodebox" and
not ndef.node_box.type == "fixed") or
node.param2 == nil then

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