make nets keep list of updated gates instead of ports

sim/compile.lua

@@ -2,36 +2,68 @@
 local ffi = FFI or require("ffi")
 Simulation = Simulation or {}
 
+ffi.cdef[[
+	struct Wire {
+		int objref;
+		int layer;
+		struct Net* group;
+		int bounds[6];
+	};
+	
+	struct Port {
+		bool state;
+		char type;
+		struct Gate* gate;
+		struct Net* group;
+	};
+	
+	struct Gate {
+		int logic_ref;
+		bool in_queue;
+		struct Port ports[?];
+	};
+	
+	struct Net {
+		bool state;
+		bool in_queue;
+		int updatetick;
+		int state_num;
+		int num_gates_update;
+		struct Gate* gates_update[?];
+	};
+]]
+
 function Simulation.compile(sim)
 	-- assemble a list of all nets
 	local all_nets = {}
-	for wire_idx, wire in pairs(sim.wires) do
+	local all_nets_t = {}
+	for k, wire in pairs(sim.wires) do
 		local net = Wire.getgroup(wire)
-		all_nets[net] = net
+		all_nets_t[net] = net
 	end
 	local num_nets = 0
-	for net_id, net in pairs(all_nets) do
+	for net_id, net in pairs(all_nets_t) do
-		num_nets = num_nets+1
+		table.insert(all_nets, net)
+	end
+	
+	-- assemble a list of all gates
+	local all_gates = {}
+	for k, gate in pairs(sim.gates) do
+		table.insert(all_gates, gate)
 	end
 	
 	-- construct each gate into an array
 	
-	-- construct each group into an array
+	-- construct array of all nets
-	local group_idx = 0
+	local c_nets = ffi.new("struct Net["..(#all_nets).."]")
-	local array_nets = ffi.new("struct Net["..num_groups.."]")
+	for net_idx, net in ipairs(all_nets) do
-	for group_id, group in pairs(groups) do
+		local c_net = ffi.new("struct Net", #net.gates_update)
-		local c_net = ffi.new("struct Net")
 		
-		local ports_update = {}
+		for gate_idx, gate in ipairs(net.gates_update) do
-		for port_id, port in pairs(group.in_ports) do
+			
-			if port.causeupdate then
-				num_ports_update = num
-			end
 		end
-		--c_net.ports_update = ffi.new("struct Port["..
 		
-		array_nets[group_idx] = c_net
+		c_nets[net_idx] = c_net
-		group_idx = group_idx + 1
 	end
 end
 
@@ -39,6 +71,6 @@ function Simulation.decompile(sim)
 	
 end
 
-function Simulation.tickcompiled(sim)
+function Simulation.tick_compiled(sim)
 	
 end

sim/gate.lua

@@ -1,15 +1,6 @@
 
 Gate = {}
 
-FFI.cdef[[
-	struct Gate {
-		int objref;
-		int definition_objref;
-		bool in_queue;
-		struct Port ports[1];
-	};
-]]
-
 function Gate.new(objref, definition)
 	local o = {
 		objref = objref,

sim/group.lua

@@ -1,20 +1,6 @@
 
 Group = {}
 
-FFI.cdef[[
-	struct Port;
-	struct Net {
-		bool state;
-		bool fxstate;
-		bool in_queue;
-		int updatetick;
-		int internal_ref;
-		int state_num;
-		int num_in_ports_update;
-		struct Port* in_ports_update[1];
-	};
-]]
-
 function Group.new()
 	local o = {
 		state = false,
@@ -23,7 +9,7 @@ function Group.new()
 		wires = {},
 		out_ports = {},
 		in_ports = {},
-		in_ports_update = {},
+		gates_update = {},
 		
 		state_num = 0,
 		in_queue = false,
@@ -49,6 +35,7 @@ function Group.addwire(group, wire)
 			
 			Wire.setgroup(wire, group)
 			Wire.update(wire)
+			
 			Simulation.queuegroup(GSim, group)
 		end
 	end
@@ -115,13 +102,12 @@ function Group.addport(group, port)
 		
 		group.in_ports[port] = port
 		group.nin_ports = group.nin_ports + 1
-		if port.causeupdate then
-			table.insert(group.in_ports_update, port)
-		end
 		
 		Simulation.queuegate(GSim, Port.getgate(port))
 		
 	end
+	
+	Group.rebuild_ports(group)
 end
 
 function Group.removeport(group, port)
@@ -144,12 +130,11 @@ function Group.removeport(group, port)
 		
 		group.in_ports[port] = nil
 		group.nin_ports = group.nin_ports - 1
-		if port.causeupdate then
-			array_remove(group.in_ports_update, port)
-		end
 		
 		Simulation.queuegate(GSim, Port.getgate(port))
 	end
+	
+	Group.rebuild_ports(group)
 end
 
 function Group.mergewith(group, group2)
@@ -196,8 +181,8 @@ function Group.setstate(group, state)
 		group.state = state
 		group.updatetick = sim.currenttick
 		
-		for k, port in ipairs(group.in_ports_update) do
+		for k, gate in ipairs(group.gates_update) do
-			Simulation.queuegate(sim, Port.getgate(port))
+			Simulation.queuegate(sim, gate)
 		end
 		
 		Simulation.queuegroupfx(sim, group)
@@ -207,3 +192,12 @@ end
 function Group.update(group)
 	Group.setstate(group, group.state_num>0)
 end
+
+function Group.rebuild_ports(group)
+	group.gates_update = {}
+	for k, port in pairs(group.in_ports) do
+		if port.causeupdate then
+			array_add(group.gates_update, Port.getgate(port))
+		end
+	end
+end

sim/main.lua

@@ -262,7 +262,7 @@ while 1 do
 					local group = Wire.getgroup(wire)
 					local numwires  = 0; for k, wire2 in pairs(group.wires          ) do numwires  = numwires +1 end
 					local numportsi = 0; for k, port  in pairs(group.in_ports       ) do numportsi = numportsi+1 end
-					local numportsu = #group.in_ports_update
+					local numgatesu = #group.gates_update
 					local numportso = 0; local numportson=0;
 					for k, port  in pairs(group.out_ports) do
 						numportso = numportso+1
@@ -273,7 +273,7 @@ while 1 do
 						"Wires: "..numwires.."\n"..
 						"In Ports: " ..numportsi.."\n"..
 						"Out Ports: "..numportso.."\n"..
-						"In Ports Update: "..numportsu.."\n"..
+						"Gates Update: "..numgatesu.."\n"..
 						"Out Ports On: "..(group.state_num)
 					;
 				end

sim/port.lua

@@ -15,20 +15,6 @@ PortDirections = {
 
 Port = {}
 
-FFI.cdef[[
-	struct Gate;
-	struct Net;
-	struct Port {
-		bool state;
-		char type;
-		char direction;
-		bool causeupdate;
-		int position[3];
-		struct Gate* gate;
-		struct Net* group;
-	};
-]]
-
 function Port.new(type, direction, position, causeupdate)
 	local o = {
 		type = type,
@@ -44,13 +30,13 @@ end
 
 function Port.setstate(port, state) -- output state
 	if state ~= port.state then
+		local group = port.group
+		group.state_num = group.state_num - (port.state and 1 or 0) + (state and 1 or 0)
 		port.state = state
-		if state then
+		
-			Port.getgroup(port).state_num = Port.getgroup(port).state_num + 1
+		if (group.state_num>0) ~= group.state then
-		else
+			Simulation.queuegroup(GSim, group)
-			Port.getgroup(port).state_num = Port.getgroup(port).state_num - 1
 		end
-		Simulation.queuegroup(GSim, Port.getgroup(port))
 	end
 end
 

sim/utility.lua

@@ -77,3 +77,11 @@ function array_remove(array, value)
 	end
 	error("element not in array")
 end
+
+function array_add(array, value)
+	for i = 1, #array do
+		local v = array[i]
+		if v==value then return end
+	end
+	table.insert(array, value)
+end

sim/wire.lua

@@ -1,15 +1,6 @@
 
 Wire = {}
 
-FFI.cdef[[
-	struct Wire {
-		int objref;
-		int layer;
-		struct Net* group;
-		int bounds[6];
-	};
-]]
-
 function Wire.new(objref, layer, bounds)
 	local o = {
 		objref = objref,