1 files changed, 63 insertions, 0 deletions
diff --git a/not/Demultiplexer.lua b/not/Demultiplexer.lua
new file mode 100644
index 0000000..468f007
--- /dev/null
+++ b/not/Demultiplexer.lua
@@ -0,0 +1,63 @@
+--- Element used for grouping elements and demultiplexing input of different controller sets.
+Demultiplexer = require "not.Element":extends()
+
+function Demultiplexer:new (parent)
+	Demultiplexer.__super.new(self, parent)
+	self.children = {}
+end
+
+--- Calls function with parameters for each child.
+-- @param func key of function to call
+-- @param ... parameters passed to function
+-- @return table with calls' results
+function Demultiplexer:callEach (func, ...)
+	local results = {}
+	for _,child in ipairs(self.children) do
+		if type(child[func]) == "function" then
+			table.insert(results, child[func](child, ...))
+		end
+	end
+	return results
+end
+
+--- Calls function with parameters for one child based on controller set.
+-- @param set controller set
+-- @param func key of function to call
+-- @param ... parameters passed to function
+function Demultiplexer:callOne (set, func, ...)
+	for i,test in ipairs(Controller.getSets()) do
+		if test == set then
+			self.children[i][func](...)
+			return nil
+		end
+	end
+end
+
+function Demultiplexer:focus ()
+	self:callEach("focus")
+	self.focused = true
+	return true
+end 
+
+function Demultiplexer:blur ()
+	self:callEach("blur")
+	self.focused = false
+end 
+
+function Demultiplexer:draw (scale)
+	self:callEach("draw", scale)
+end
+
+function Demultiplexer:update (dt)
+	self:callEach("update", dt)
+end
+
+function Demultiplexer:controlpressed (set, action, key)
+	self:callOne(set, "controlpressed", set, action, key)
+end
+
+function Demultiplexer:controlreleased (set, action, key)
+	self:callOne(set, "controlreleased", set, action, key)
+end
+
+return Demultiplexer