start adding c structs for gates and ports

sim/simulation.lua

@@ -169,13 +169,19 @@ function Simulation.removegate(self, objref)
 	self.ngates = self.ngates - 1
 end
 
+local function is_wire(obj)
+	return obj.layer~=nil
+end
+
 function Simulation.connectwireat(self, wire, x, y, z)
 	local objs = Simulation.getfromworld(self, x, y, z)
 	for k, obj in pairs(objs) do
 		if obj ~= wire and obj.group ~= nil then
-			if obj.logictype == 0 and Wire.getlayer(obj) == Wire.getlayer(wire) then
+			if is_wire(obj) then -- wire
+				if Wire.getlayer(obj) == Wire.getlayer(wire) then -- same layer
 					Group.addwire(obj.group, wire)
-			elseif obj.logictype == 1 then
+				end
+			else -- port
 				Group.addwire(obj.group, wire)
 			end
 		end
@@ -273,13 +279,13 @@ function Simulation.tick(self)
 	self.groupqueue = {}
 	
 	for k, gate in pairs(self.initqueue) do
-		gate.definition.init(gate)
+		Gate.init(gate)
 	end
 	self.initqueue = {}
 	
 	for gate, inputs in pairs(self.inputqueue) do
 		for inputidx, argv in ipairs(inputs) do
-			gate.definition.input(gate, argv)
+			Gate.input(gate, argv)
 		end
 	end
 	self.inputqueue = {}
@@ -292,7 +298,7 @@ function Simulation.tick(self)
 	end
 	
 	for k, gate in pairs(self.gatequeue) do
-		gate.definition.logic(gate)
+		Gate.logic(gate)
 	end
 	self.gatequeue = {}