diff --git a/sim/compile.lua b/sim/compile.lua
index c8adce4..8b13789 100644
--- a/sim/compile.lua
+++ b/sim/compile.lua
@@ -1,106 +1 @@
 
-local ffi = FFI or require("ffi")
-Simulation = Simulation or {}
-
-function Simulation.compile_code(sim, text)
-	-- todo: compile some kind of DSL into machine code
-	
-	return code, size
-end
-
---local net_program_code = Simulation.compile_code( [[
---	
---]] )
-
-function Simulation.compile(sim)
-	sim.compilation = {
-		gates = {},
-		wires = {},
-		cgates = {},
-		cwires = {},
-	}
-	local comp = sim.compilation
-	
-	-- assemble a list of all nets
-	local all_nets_t = {}
-	for k, wire in pairs(sim.wires) do
-		local net = Wire.getgroup(wire)
-		all_nets_t[net] = net
-	end
-	local all_nets = {}
-	for net_id, net in pairs(all_nets_t) do
-		table.insert(comp.nets, net)
-		local cdata = ffi.new("char["..(ffi.sizeof("struct Net") + ffi.sizeof("struct Gate*")*net.num_gates_update).."]")
-		local cnet = ffi.cast(cdata, "struct Net")
-		comp.cnets[net] = cnet
-	end
-	
-	-- assemble a list of all gates
-	local all_gates = {}
-	for k, gate in pairs(sim.gates) do
-		table.insert(comp.gates, gate)
-		local cdata = ffi.new("char["..(ffi.sizeof("struct Gate") + ffi.sizeof("struct OutPort")*gate.num_ports_out).."]")
-		local cgate = ffi.cast(cdata, "struct Gate")
-		comp.cgates[gate] = cgate
-	end
-	
-	for netidx, net in ipairs(comp.nets) do
-		local cnet = comp.cnets[net] or error("no cnet")
-		cnet.in_queue = net.in_queue
-		cnet.num_out_ports_on = net.state_num
-		cnet.state = net.state
-		cnet.update_tick = net.update_tick
-		for i = 1, net.num_gates_update do
-			local gate = net.gates_update[i]
-			local cgate = comp.cgates[gate] or error("no cgate")
-			cnet.gates_update[i-1] = cgate
-		end
-	end
-	
-	for gateidx, gate in ipairs(comp.gates) do
-		local cgate = comp.cgates[gate] or error("no cgate")
-		cgate.in_queue = gate.in_queue
-		local j = 0
-		for i, port in ipairs(gate.ports) do
-			if port.type == PortTypes.output then
-				local net = port.group
-				if net then
-					local cnet = comp.cnets[net] or error("no cnet")
-					cgate.out_ports[j].net = cnet
-				else
-					cgate.out_ports[j].net = 0
-				end
-				cgate.out_ports[j].state = gate.port_states[i] or error("no gate port_state")
-				j = j + 1
-			end
-		end
-	end
-end
-
-function Simulation.decompile(sim)
-	local comp = sim.compilation
-	
-	for netidx, net in ipairs(comp.nets) do
-		local cnet = comp.cnets[net] or error("no cnet")
-		net.in_queue = cnet.in_queue
-		net.state_num = cnet.num_out_ports_on
-		net.state = cnet.state
-		net.update_tick = cnet.update_tick
-	end
-	
-	for gateidx, gate in ipairs(comp.gates) do
-		local cgate = comp.cgates[gate] or error("no cgate")
-		gate.in_queue = cgate.in_queue
-		local j = 0
-		for i, port in ipairs(gate.ports) do
-			if port.type == PortTypes.output then
-				gate.port_states[i] = cgate.out_ports[j].state
-				j = j + 1
-			end
-		end
-	end
-end
-
-function Simulation.tick_compiled(sim, count)
-	
-end
diff --git a/sim/compiled_sim.c b/sim/compiled_sim.c
index da809c4..8b13789 100644
--- a/sim/compiled_sim.c
+++ b/sim/compiled_sim.c
@@ -1,75 +1 @@
 
-void sim_init(int num_gates, int num_nets);
-void sim_add_gate(int gateid, int logic_func_id, char* logic_func_name, int num_out_ports, char* data);
-void sim_add_net(int netid, int num_gates_update);
-void sim_connect_out_port(int gateid, int index, int netid);
-void sim_connect_in_port(int gateid, int index, int netid);
-void sim_tick(int count);
-void sim_get_net_state(int netid);
-void sim_get_port_state(int gateid, int index);
-void sim_set_net_state(int netid);
-void sim_set_port_state(int gateid, int index);
-void sim_delete_net(int netid);
-void sim_delete_gate(int gateid);
-
-////////
-
-void sim_create(unsigned int datalen, char* text);
-
-#include <stdlib.h>
-#include <assert.h>
-
-typedef unsigned int uint;
-typedef unsigned long long u64;
-
-void sim_copy_logic_function(
-	char** prog,
-	char* in_queue,
-	char* out_port_states,
-	int logic_func,
-	char** port_in_net_states,
-	char** port_out_net_inqueue,
-	char** port_out_net_update_func,
-	int num_ports_in,
-	int num_ports_out
-) {
-	// todo: indata = inport net state pointers, outport net in queue pointers, outport net update function pointers
-}
-
-void sim_compile_gate(char** prog, char** data, int** idat, u64* indata) {
-	int num_ports_in  = *(indata++);
-	int num_ports_out = *(indata++);
-	int in_queue      = *(indata++);
-	int logic_func    = *(indata++);
-	
-	char* port_in_net_states[256];
-	sim_copy_logic_function( // copy logic function into program
-		prog,
-		*data,
-		(*data)+1,
-		logic_func,
-		&indata,
-		num_ports_in,
-		num_ports_out
-	);
-	
-	*(*data++) = in_queue; // alloc bool for in queue
-	for(int i=0; i<num_ports_out; i++) { // alloc bool for each output state
-		*((*data)++) = *(indata++);
-	}
-}
-
-void sim_compile_net_function(char** prog, char* in_queue, int* gates, u64** indata, int num_gates_update) {
-	
-}
-
-void sim_compile_net(char** prog, char** data, int** idat, u64* indata) {
-	int num_gates_update = *(indata++);
-	int num_ports_on     = *(indata++);
-	int in_queue         = *(indata++);
-	
-	sim_compile_net_function(prog, *data, *idat, &indata, num_gates_update);
-	
-	*((*data)++) = in_queue;
-	*((*idat)++) = num_ports_on;
-}
diff --git a/sim/compiled_sim.dll b/sim/compiled_sim.dll
index 7a56233..603cc44 100644
Binary files a/sim/compiled_sim.dll and b/sim/compiled_sim.dll differ
diff --git a/sim/gate.lua b/sim/gate.lua
index 5ebbc55..de765d6 100644
--- a/sim/gate.lua
+++ b/sim/gate.lua
@@ -3,6 +3,18 @@ local ffi = FFI or require("ffi")
 
 Gate = {}
 
+ffi.cdef [[
+	struct Net;
+	struct Gate {
+		int* in_queue;
+		int* port_states;
+		int** port_net_state;
+		int** port_net_state_num;
+		int** port_net_in_queue;
+		struct Net** port_nets_c;
+	};
+]]
+
 function Gate.new(objref, definition)
 	local gate = {
 		-- Logic Critical
@@ -14,10 +26,21 @@ function Gate.new(objref, definition)
 		port_net_state     = ffi.new("int*["..(#definition.ports+1).."]"),
 		port_net_state_num = ffi.new("int*["..(#definition.ports+1).."]"),
 		port_net_in_queue  = ffi.new("int*["..(#definition.ports+1).."]"),
+		port_nets_c        = ffi.new("struct Net*["..(#definition.ports+1).."]"),
 		
 		objref = objref,
 		definition = definition,
 	}
+	gate.in_queue[0] = 0
+	
+	gate.c = ffi.new("struct Gate")
+	gate.c.in_queue = gate.in_queue
+	gate.c.port_states = gate.port_states
+	gate.c.port_net_state = gate.port_net_state
+	gate.c.port_net_state_num = gate.port_net_state_num
+	gate.c.port_net_in_queue = gate.port_net_in_queue
+	gate.c.port_nets_c = gate.port_nets_c
+	
 	return gate
 end
 
diff --git a/sim/gatedef.lua b/sim/gatedef.lua
index b219efb..b90934d 100644
--- a/sim/gatedef.lua
+++ b/sim/gatedef.lua
@@ -75,7 +75,6 @@ end
 function GateDefinition.constructgate(def, objref, position, rotation)
 	local gate = Gate.new(objref, def)
 	
-	gate.in_queue[0] = 0
 	for i = 1, #def.ports do
 		local portd = def.ports[i]
 		local type = portd.type
diff --git a/sim/group.lua b/sim/group.lua
index 29e5ee8..a35f127 100644
--- a/sim/group.lua
+++ b/sim/group.lua
@@ -1,8 +1,19 @@
 
-local ffi = FFI
+local ffi = FFI or require("ffi")
 
 Group = {}
 
+ffi.cdef [[
+	struct Gate;
+	struct Net {
+		int* state;
+		int* state_num;
+		int* in_queue;
+		int* update_tick;
+		struct Gate** gates_update_c;
+	};
+]]
+
 function Group.new()
 	local net = {
 		-- Logic Critical
@@ -11,7 +22,8 @@ function Group.new()
 		in_queue = ffi.new("int[1]"),
 		update_tick = ffi.new("int[1]"),
 		gates_update = {},
-		num_gates_update = 0,
+		num_gates_update = ffi.new("int[1]"),
+		gates_update_c = nil,
 		
 		fxstate = 0,
 		
@@ -26,6 +38,14 @@ function Group.new()
 	net.state_num[0] = 0
 	net.in_queue[0] = 0
 	net.update_tick[0] = 0
+	
+	net.c = ffi.new("struct Net")
+	net.c.state = net.state
+	net.c.state_num = net.state_num
+	net.c.in_queue = net.in_queue
+	net.c.update_tick = net.update_tick
+	net.c.gates_update_c = ffi.cast("struct Gate**", 0)
+	
 	return net
 end
 
@@ -186,7 +206,7 @@ function Group.setstate(group, state)
 		group.state[0] = state
 		group.update_tick[0] = sim.current_tick
 		
-		local len = group.num_gates_update
+		local len = group.num_gates_update[0]
 		for i = 1, len do
 			local gate = group.gates_update[i]
 			if gate and gate.in_queue[0]==0 then
@@ -203,13 +223,22 @@ function Group.update(group)
 	Group.setstate(group, group.state_num[0]>0 and 1 or 0)
 end
 
-function Group.rebuild_ports(group)
-	group.gates_update = {}
-	group.num_gates_update = 0
-	for k, port in pairs(group.in_ports) do
+function Group.rebuild_ports(net)
+	net.gates_update = {}
+	net.num_gates_update[0] = 0
+	local gates_seen = {}
+	for k, port in pairs(net.in_ports) do
 		if port.causeupdate then
-			array_add(group.gates_update, Port.getgate(port))
-			group.num_gates_update = group.num_gates_update + 1
+			local gate = Port.getgate(port)
+			if not gates_seen[gate] then
+				gates_seen[gate] = true
+				net.gates_update[net.num_gates_update[0]+1] = gate
+				net.num_gates_update[0] = net.num_gates_update[0] + 1
+			end
 		end
 	end
+	net.gates_update_c = ffi.new("struct Gate*["..(net.num_gates_update[0]).."]")
+	for i = 0, net.num_gates_update[0]-1 do
+		net.gates_update_c[i] = net.gates_update[i+1].c
+	end
 end
diff --git a/sim/network.lua b/sim/network.lua
index a2352cd..73c9127 100644
--- a/sim/network.lua
+++ b/sim/network.lua
@@ -141,7 +141,7 @@ function network_update()
 					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 numgatesu = group.num_gates_update
+					local numgatesu = group.num_gates_update[0]
 					local numportso = 0; local numportson=0;
 					for k, port  in pairs(group.out_ports) do
 						numportso = numportso+1