91 lines
2.1 KiB
Lua
91 lines
2.1 KiB
Lua
doukutsu = {}
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doukutsu._registered = {
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tick = {},
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}
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doukutsu._handlers = setmetatable({
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tick = function(scene)
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for _, h in pairs(doukutsu._registered.tick) do
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pcall(h, scene)
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end
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end,
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}, {
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__index = function(self, event)
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error("Unknown event: " .. event)
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end,
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})
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doukutsu._initializeScript = function(script)
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-- for compatibility with Lua 5.2+, copy-pasted from Lua mailing list
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-- http://lua-users.org/lists/lua-l/2010-06/msg00313.html
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local _setfenv = setfenv or function(f, t)
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f = (type(f) == 'function' and f or debug.getinfo(f + 1, 'f').func)
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local name
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local up = 0
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repeat
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up = up + 1
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name = debug.getupvalue(f, up)
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until name == '_ENV' or name == nil
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if name then
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debug.upvaluejoin(f, up, function()
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return name
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end, 1)
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debug.setupvalue(f, up, t)
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end
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end
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global_copy = {}
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for k, v in pairs(_G) do
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global_copy[k] = v
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end
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_setfenv(script, global_copy)
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script()
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end
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doukutsu.playSfx = function(id)
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__doukutsu:playSfx(id)
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end
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doukutsu.playSong = function(id)
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__doukutsu:playSong(id)
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end
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doukutsu.on = function(event, handler)
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assert(type(event) == "string", "event type must be a string.")
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assert(type(handler) == "function", "event handler must be a function.")
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if doukutsu._registered[event] == nil then
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error("Unknown event: " .. event)
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end
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table.insert(doukutsu._registered[event], handler)
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return handler
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end
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doukutsu.removeHandler = function(event, handler)
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assert(type(event) == "string", "event type must be a string.")
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assert(type(handler) == "function", "event handler must be a function.")
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if doukutsu._registered[event] == nil then
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error("Unknown event: " .. event)
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end
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local index = -1
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for i, h in pairs(doukutsu._registered[event]) do
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if handler == h then
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index = i
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break
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end
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end
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if index ~= -1 then
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table.remove(doukutsu._registered[event], index)
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end
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return handler
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end
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