remove colon syntax from oop

sim/gate.lua

@@ -1,6 +1,7 @@
+
 Gate = {}
 
-function Gate:new(objref, definition)
+function Gate.new(self, objref, definition)
 	local o = {
 		objref = objref,
 		definition = definition,
@@ -11,33 +12,33 @@ function Gate:new(objref, definition)
 	return o
 end
 
-function Gate:addport(port)
+function Gate.addport(self, port)
 	self.ports[#self.ports+1] = port
 	port.gate = self
 end
 
-function Gate:getportstate(index)
+function Gate.getportstate(self, index)
 	return self.ports[index].state
 end
 
-function Gate:setportstate(index, state)
-	self.ports[index]:setstate(state)
+function Gate.setportstate(self, index, state)
+	Port.setstate(self.ports[index], state)
 end
 
-function Gate:initdata()
+function Gate.initdata(self)
 	self.data = {}
 end
 
-function Gate:getdata()
+function Gate.getdata(self)
 	return self.data
 end
 
-function Gate:getportisrising(index)
-	return self.ports[index]:isrising()
+function Gate.getportisrising(self, index)
+	return Port.isrising(self.ports[index])
 end
 
 function Gate:getportisfalling(index)
-	return self.ports[index]:isfalling()
+	return Port.isfalling(self.ports[index])
 end
 
 -- function Gate:cb(...)
@@ -52,15 +53,15 @@ end
 -- 	sim:queuecallback(self, str)
 -- end
 
-function Gate:cb(...)
-	sim:queuecallback(self, ...)
+function Gate.cb(self, ...)
+	Simulation.queuecallback(sim, self, ...)
 end
 
-function Gate:queue(delay)
-	sim:queuegatelater(self, delay)
+function Gate.queue(self, delay)
+	Simulation.queuegatelater(sim, self, delay)
 end
 
-function Gate:testlogic(n)
+function Gate.testlogic(self, n)
 	--local time = os.clock()
 	--for i = 1, n do
 	--	self.definition.logic(self)
@@ -68,6 +69,6 @@ function Gate:testlogic(n)
 	--client:send("TEST\t" .. (os.clock()-time) .. "\n")
 end
 
-function Gate:gettick()
+function Gate.gettick(self)
 	return sim.currenttick
 end