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https://github.com/wesnoth/wesnoth
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955a8bc445
use game_events.add in on_event.lua previously on_event.lua and game_events.add had separate priority lists, so that independent of the priority parameter (which both game_events.add and on_event.lua now support) on_event.lua events were always executed first. The set_undoable(true) call is there to match the previous behavior of on_event.lua where events implemented via on_event were undoable by default. The higher default priority of 0.5 is there to match the previous behavior of on_event.lua where events implemented via on_event.lua were always run before wml events.
36 lines
1.2 KiB
Lua
36 lines
1.2 KiB
Lua
-- registers an event handler. note that, like all lua variables this is not persitent in savefiles,
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-- so you have to call this function from a toplevel lua tag or from a preload event.
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-- It is also not possible to use this for first_time_only=yes events.
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-- This api used to be the default way to add events from lua (with its own implementation in lua
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-- based on game_events.on_event). Now it just calls game_evets.add, because otherwise the
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-- priority parameter wouldn't work across the different implementations.
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-- Still kept for compatibility and because it has an easier to
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-- use interface. Meaning you can easily write in a lua file:
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--
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-- on_event("moveto", 10, function(ec)
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-- ...
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-- end)
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--
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-- which is imo more convenient than the interface wesnoth.game_events.add or wesnoth.game_events.add_repeating offers
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-- even though its at this point technically equivalent to the latter.
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return function(eventname, priority, fcn)
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if type(priority) == "function" then
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fcn = priority
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priority = 0.5
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end
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wesnoth.game_events.add{
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name = eventname,
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priority = priority,
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first_time_only = false,
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action = function()
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context = wesnoth.current.event_context
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wesnoth.experimental.game_events.set_undoable(true)
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fcn(context)
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end
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}
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end
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