From 0963ef8ca871af0b69d9a7b0b3818025c4b1f4cf Mon Sep 17 00:00:00 2001
From: Redo0 <a509dcfc@cock.li>
Date: Tue, 25 May 2021 05:26:06 -0500
Subject: [PATCH] make sim local; start circuit compiler

---
 sim/compile.lua    | 38 ++++++++++++++++++++++++++++++++++++++
 sim/main.lua       |  5 ++++-
 sim/simulation.lua | 12 ++++++------
 sim/wire.lua       |  5 +++--
 4 files changed, 51 insertions(+), 9 deletions(-)

diff --git a/sim/compile.lua b/sim/compile.lua
index 3ecdd0d..7701c5a 100644
--- a/sim/compile.lua
+++ b/sim/compile.lua
@@ -1,6 +1,44 @@
 
+local ffi = FFI or require("ffi")
+Simulation = Simulation or {}
+
+ffi.cdef([[
+	struct Net {
+		
+	};
+]])
+
 function Simulation.compile(sim)
+	-- assemble a list of all groups
+	local groups = {}
+	for wire_idx, wire in pairs(sim.wires) do
+		local group = Wire.getgroup(wire)
+		groups[group] = group
+	end
+	local num_groups = 0
+	for group_id, group in pairs(groups) do
+		num_groups = num_groups+1
+	end
 	
+	-- construct each gate into an array
+	
+	-- construct each group into an array
+	local group_idx = 0
+	local array_nets = ffi.new("struct Net["..num_groups.."]")
+	for group_id, group in pairs(groups) do
+		local c_net = ffi.new("struct Net")
+		
+		local ports_update = {}
+		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
+		group_idx = group_idx + 1
+	end
 end
 
 function Simulation.decompile(sim)
diff --git a/sim/main.lua b/sim/main.lua
index 05d40ab..618886e 100644
--- a/sim/main.lua
+++ b/sim/main.lua
@@ -10,6 +10,7 @@ OPT_SAVE_DIR = OPT_SAVE_DIR:gsub("/$", "")
 print("Save location set to \""..OPT_SAVE_DIR.."\"")
 
 local socket = require("socket")
+local ffi = require("ffi")
 
 dofile("iosafe.lua")
 
@@ -21,7 +22,9 @@ dofile("gatedef.lua")
 dofile("gate.lua")
 dofile("port.lua")
 dofile("save.lua")
+FFI = ffi
 dofile("compile.lua")
+FFI = nil
 
 OPT_TICK_ENABLED = true
 OPT_TICK_TIME = 0.032
@@ -145,7 +148,7 @@ while 1 do
 				local max = vectotable(data[i+4])
 				local bounds = {min[1], min[2], min[3], max[1], max[2], max[3]}
 				
-				local wire = Wire.new(Wire, tonumber(data[i+1]), tonumber(data[i+2]), bounds)
+				local wire = Wire.new(Wire, tonumber(data[i+1]), tonumber(data[i+2]), bounds, sim)
 				Simulation.addwire(sim, wire)
 				
 				i = i + 4
diff --git a/sim/simulation.lua b/sim/simulation.lua
index 3093498..525ee00 100644
--- a/sim/simulation.lua
+++ b/sim/simulation.lua
@@ -125,22 +125,22 @@ function Simulation.removewire(self, objref)
 
 		for x = bounds[1]+1, bounds[4]-1, 2 do
 			for z = bounds[3]+1, bounds[6]-1, 2 do
-				sim[x][bounds[2]][z][wire] = nil
-				sim[x][bounds[5]][z][wire] = nil
+				self[x][bounds[2]][z][wire] = nil
+				self[x][bounds[5]][z][wire] = nil
 			end
 		end
 	
 		for y = bounds[2]+1, bounds[5]-1, 2 do
 			for z = bounds[3]+1, bounds[6]-1, 2 do
-				sim[bounds[1]][y][z][wire] = nil
-				sim[bounds[4]][y][z][wire] = nil
+				self[bounds[1]][y][z][wire] = nil
+				self[bounds[4]][y][z][wire] = nil
 			end
 		end
 	
 		for x = bounds[1]+1, bounds[4]-1, 2 do
 			for y = bounds[2]+1, bounds[5]-1, 2 do
-				sim[x][y][bounds[3]][wire] = nil
-				sim[x][y][bounds[6]][wire] = nil
+				self[x][y][bounds[3]][wire] = nil
+				self[x][y][bounds[6]][wire] = nil
 			end
 		end
 
diff --git a/sim/wire.lua b/sim/wire.lua
index 7e032ce..7ef72d5 100644
--- a/sim/wire.lua
+++ b/sim/wire.lua
@@ -3,12 +3,13 @@ Wire = {
 	logictype = 0
 }
 
-function Wire.new(self, objref, layer, bounds)
+function Wire.new(self, objref, layer, bounds, sim)
 	local o = {
 		objref = objref,
 		layer = layer,
 		group = nil,
-		bounds = bounds
+		bounds = bounds,
+		sim = sim,
 	}
 	setmetatable(o, self)
 	self.__index = self