From 812fbd44ae5793b10d5c9da82eb4bf9f893e57b0 Mon Sep 17 00:00:00 2001
From: Izaya <redtailedairways@gmail.com>
Date: Mon, 13 Feb 2017 10:15:41 +0000
Subject: [PATCH] Updated to use t400.lua from test3d-tools

---
 test3d_t400/init.lua | 200 +++++++++++++------------------------------
 1 file changed, 61 insertions(+), 139 deletions(-)

diff --git a/test3d_t400/init.lua b/test3d_t400/init.lua
index fe56aa9..46d11c4 100644
--- a/test3d_t400/init.lua
+++ b/test3d_t400/init.lua
@@ -1,10 +1,11 @@
-local MEMSIZE=16
+local MEMSIZE=16 -- does this still apply?
 local SHUTUP = false
 if not digiline then
  print("Digilines not found.")
  return
 end
 local path = minetest.get_modpath(minetest.get_current_modname())
+local t400 = dofile(path.."/t400.lua")
 local oldprint=print
 local function print(...)
  if SHUTUP then return end
@@ -31,51 +32,34 @@ local function push(pos,val)
  end
  meta:set_string("stack",sstring)
 end
-local function pop(pos)
- local meta = minetest.get_meta(pos)
- local sstring = ""
- local sstab = string.split(meta:get_string("stack"),"\n")
- local sval = table.remove(sstab,#sstab)
- for k,v in ipairs(sstab) do
-  sstring = sstring .. v .. "\n"
- end
- meta:set_string("stack",sstring)
- if not sval then sval = 0 end
- return tonumber(sval) % 4096
-end
 
-local function t400_digiline_receive(pos, node, channel, msg)
- print("Digiline: "..tostring(pos.x)..","..tostring(pos.y)..","..tostring(pos.z).."; Channel: "..tostring(channel).."; Message: "..tostring(msg))
+function rqaddr(pos,addr,tp)
  local meta = minetest.get_meta(pos)
- print(meta:get_string("state").." "..meta:get_string("waitingfor"))
- if meta:get_string("state") == "waitingdat" and meta:get_string("waitingfor") == channel then
-  print("got data")
-  push(pos,tonumber(msg))
-  meta:set_int("pc",meta:get_int("pc")+1)
-  meta:set_string("state","running")
-  print("finished getting data")
- elseif meta:get_string("state") == "waitingins" and meta:get_string("waitingfor") == channel then
-  meta:set_int("ci",tonumber(msg))
-  meta:set_string("state","running")
- end
+ meta:set_string("state","waiting"..tostring(tp))
+ meta:set_string("addr",addr)
+ print("rqaddr: "..addr.." "..tp)
+ digiline:receptor_send(pos,digiline.rules.default,meta:get_string("channel")..string.format("%X",tonumber(addr)),"get")
 end
-print("Created T400 digiline function")
 
 local function t400_set_meta(pos)
  local meta = minetest.get_meta(pos)
- local ms = ""
+ local stab = {}
+ stab.stack,stab.rstack = {},{}
  for i = 1, MEMSIZE do
-  ms = ms .. "0\n"
+  stab.stack[#stab.stack+1] = 0
+  stab.rstack[#stab.stack+1] = 0
  end
- meta:set_string("stack",ms)
- meta:set_string("retstack",ms)
- meta:set_string("channel","Default")
+ stab.cins = 0
+ stab.pc = 0
+ meta:set_string("stab",minetest.serialize(stab))
+ meta:set_string("channel","")
+ meta:set_string("rw","")
  meta:set_string("state","running")
- meta:set_string("waitingfor","")
  meta:set_int("pc",0)
- meta:set_int("ci",0)
  meta:set_string("formspec","size[5,5]\nlabel[0.4,0.5;T400 Execution Node]\nfield[0.5,2;4,1;channel;Channel prefix;${channel}]\nfield[0.5,3;4,1;pc;Program Counter;${pc}]field[0.5,4;4,1;state;State;${state}]")
+ print("Set metadata for a T400 node at "..pos2string(pos))
 end
+
 minetest.register_node("test3d_t400:t400", {
  description = "T400 Execution Node",
  tiles = {
@@ -90,125 +74,63 @@ minetest.register_node("test3d_t400:t400", {
    },
   },
  },
- on_construct = t400_set_meta,
  groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
+ on_construct = t400_set_meta,
+ on_receive_fields = function(pos,_,fields,sender)
+  print("Received fields for a T400 node at "..pos2string(pos))
+  for k,v in pairs(fields) do print(tostring(k).." = "..tostring(v)) end
+  local meta = minetest.get_meta(pos)
+  if fields.channel ~= nil then
+   meta:set_string("channel",fields.channel)
+  end
+  if fields.pc ~= nil then
+   local stab = minetest.deserialize(meta:get_string("stab"))
+   stab.pc = tonumber(fields.pc)
+   meta:set_int("pc",fields.pc) -- for display only
+   meta:set_string("stab",minetest.serialize(stab))
+  end
+  if fields.state ~= nil then
+   meta:set_string("state",fields.state)
+  end
+ end,
  digiline = {
   receptor = {},
   effector = {
-   action = t400_digiline_receive
+   action = function(pos,node,channel,msg)
+    local meta = minetest.get_meta(pos)
+    local stab = minetest.deserialize(meta:get_string("stab"))
+    print(meta:get_string("state").." "..meta:get_string("addr"),channel.." "..msg.." = "..meta:get_string("channel")..string.format("%X",meta:get_string("addr")))
+    if meta:get_string("state") == "waitingread" and meta:get_string("channel")..string.format("%X",meta:get_string("addr")) == channel then
+     push(pos,tonumber(msg)%4096)
+     rqaddr(pos,stab.pc,"ins")
+    elseif meta:get_string("state") == "waitingins" and meta:get_string("channel")..string.format("%X",meta:get_string("addr")) == channel then
+     stab.ins = (tonumber(msg)%4096)
+     meta:set_string("state","running")
+    end
+   end
   }
- },
- on_receive_fields = function(pos,_,fields,sender)
-  if fields.channel == nil then return end
-  local meta = minetest.get_meta(pos)
-  fields.channel = fields.channel or ""
-  meta:set_string("channel",fields.channel)
-  meta:set_string("pc",fields.pc)
-  meta:set_string("state",fields.state)
- end
+ }
 })
 print("T400 node registered")
-
 minetest.register_abm({
  nodenames={"test3d_t400:t400"},
- interval=0.1,
+ interval=1,
  chance=1,
  action = function(pos)
   local meta = minetest.get_meta(pos)
-  local nins = 1
-  if meta:get_string("state") == "running" then
-   local skipnext = false
-   print("Attempting to run T400 node at "..pos2string(pos))
-   local ci = meta:get_int("ci")
-   if ci == 4095 then -- ppc
-    push(pos,meta:get_int("pc"))
-   elseif ci == 4094 then -- swp - why do I have this?
-    local a = pop(pos)
-    local b = pop(pos)
-    print("Swapping "..tostring(a).." for "..tostring(b))
-    push(pos,b)
-    push(pos,a)
-   elseif ci == 4093 then -- read
-    skipnext = true
-    local addr = pop(pos)
-    meta:set_string("state","waitingdat")
-    meta:set_string("waitingfor",meta:get_string("channel")..string.format("%X",addr))
-    meta:set_int("pc",meta:get_int("pc")+nins)
-    digiline:receptor_send(pos,digiline.rules.default,meta:get_string("channel")..string.format("%X",addr),"get")
-    return
-   elseif ci == 4092 then -- write
-    local addr = pop(pos)
-    local dat = pop(pos)
-    print("Writing "..tostring(dat).." to address "..addr)
+  if meta:get_string("state") ~= "running" then return false end
+  local stab = minetest.deserialize(meta:get_string("stab"))
+  local stab, rw, addr, dat = t400.run(stab)
+  meta:set_int("pc",stab.pc)
+  meta:set_string("stab",minetest.serialize(stab))
+  print(minetest.serialize(stab))
+  if rw == "read" then
+   rqaddr(pos,addr,rw)
+  else
+   if rw == "write" then
     digiline:receptor_send(pos,digiline.rules.default,meta:get_string("channel")..string.format("%X",addr),dat)
-   elseif ci == 4091 then -- add
-    print("Adding stuff")
-    push(pos,pop(pos)+pop(pos))
-   elseif ci == 4090 then -- sub
-    push(pos,pop(pos)-pop(pos))
-   elseif ci == 4089 then -- jmp
-    local npc = pop(pos)
-    print("Jumping to "..tostring(npc))
-    meta:set_int("pc",npc)
-    nins=0
-   elseif ci == 4088 then -- sez
-    local val = pop(pos)
-    print(val,type(val))
-    if val == 0 then
-     print("Skipping because "..tostring(val).." = 0")
-     nins=nins+1
-    end
-   elseif ci == 4087 then -- jez
-    local addr = pop(pos)
-    local val = pop(pos)
-    if val == 0 then
-     print("Jumping to "..addr.." because "..val.." = 0")
-     meta:set_int("pc",addr)
-     nins=0
-    end
-   elseif ci == 4086 then -- jsr
-    local sstring = ""
-    local sstab = string.split(meta:get_string("retstack"),"\n")
-    sstab[#sstab+1] = tostring(tonumber(meta:get_int("pc")) % 4096)
-    if #sstab > MEMSIZE then
-     table.remove(sstab,1)
-    end
-    for k,v in ipairs(sstab) do
-     sstring = sstring .. v .. "\n"
-    end
-    meta:set_string("retstack",sstring)
-    meta:set_int("pc",pop(pos))
-    nins=0
-   elseif ci == 4085 then -- ret
-    local sstring = ""
-    local sstab = string.split(meta:get_string("retstack"),"\n")
-    local sval = tonumber(table.remove(sstab,#sstab))
-    for k,v in ipairs(sstab) do
-     sstring = sstring .. v .. "\n"
-    end
-    meta:set_string("retstack",sstring)
-    if not sval then sval = 0 end
-    meta:set_int("pc",sval)
-   elseif ci == 4084 then -- dup
-    local v = pop(pos)
-    push(pos,v)
-    push(pos,v)
-    print("Duplicating "..v)
-   elseif ci == 4083 then -- drop
-    print("Dropping stuff")
-    pop(pos)
-   else
-    print("Pushing "..ci.." to "..pos2string(pos))
-    push(pos,ci)
-   end
-   if not skipnext then
-    meta:set_int("pc",meta:get_int("pc")+nins)
-    meta:set_string("state","waitingins")
-    meta:set_string("waitingfor",meta:get_string("channel")..string.format("%X",meta:get_int("pc")))
-    digiline:receptor_send(pos, digiline.rules.default, meta:get_string("channel")..string.format("%X",meta:get_int("pc")), "get")
    end
+   rqaddr(pos,stab.pc,"ins")
   end
  end
 })
-print("T400 ABM registered")
-print("T400 init finished")