[Pokemon Red and Blue] Initial implementation (#1016)

data/lua/PKMN_RB/json.lua

@@ -0,0 +1,389 @@
+--
+-- json.lua
+--
+-- Copyright (c) 2015 rxi
+--
+-- This library is free software; you can redistribute it and/or modify it
+-- under the terms of the MIT license. See LICENSE for details.
+--
+
+local json = { _version = "0.1.0" }
+
+-------------------------------------------------------------------------------
+-- Encode
+-------------------------------------------------------------------------------
+
+local encode
+
+function error(err)
+	print(err)
+end
+
+local escape_char_map = {
+  [ "\\" ] = "\\\\",
+  [ "\"" ] = "\\\"",
+  [ "\b" ] = "\\b",
+  [ "\f" ] = "\\f",
+  [ "\n" ] = "\\n",
+  [ "\r" ] = "\\r",
+  [ "\t" ] = "\\t",
+}
+
+local escape_char_map_inv = { [ "\\/" ] = "/" }
+for k, v in pairs(escape_char_map) do
+  escape_char_map_inv[v] = k
+end
+
+
+local function escape_char(c)
+  return escape_char_map[c] or string.format("\\u%04x", c:byte())
+end
+
+
+local function encode_nil(val)
+  return "null"
+end 
+
+
+local function encode_table(val, stack)
+  local res = {}
+  stack = stack or {}
+
+  -- Circular reference?
+  if stack[val] then error("circular reference") end
+
+  stack[val] = true
+
+  if val[1] ~= nil or next(val) == nil then
+    -- Treat as array -- check keys are valid and it is not sparse
+    local n = 0
+    for k in pairs(val) do
+      if type(k) ~= "number" then
+        error("invalid table: mixed or invalid key types")
+      end
+      n = n + 1
+    end
+    if n ~= #val then
+      print("invalid table: sparse array")
+	  print(n)
+	  print("VAL:")
+	  print(val)
+	  print("STACK:")
+	  print(stack)
+    end
+    -- Encode
+    for i, v in ipairs(val) do
+      table.insert(res, encode(v, stack))
+    end
+    stack[val] = nil
+    return "[" .. table.concat(res, ",") .. "]"
+
+  else
+    -- Treat as an object
+    for k, v in pairs(val) do
+      if type(k) ~= "string" then
+        error("invalid table: mixed or invalid key types")
+      end
+      table.insert(res, encode(k, stack) .. ":" .. encode(v, stack))
+    end
+    stack[val] = nil
+    return "{" .. table.concat(res, ",") .. "}"
+  end
+end
+
+
+local function encode_string(val)
+  return '"' .. val:gsub('[%z\1-\31\\"]', escape_char) .. '"'
+end
+
+
+local function encode_number(val)
+  -- Check for NaN, -inf and inf
+  if val ~= val or val <= -math.huge or val >= math.huge then
+    error("unexpected number value '" .. tostring(val) .. "'")
+  end
+  return string.format("%.14g", val)
+end
+
+
+local type_func_map = {
+  [ "nil"     ] = encode_nil,
+  [ "table"   ] = encode_table,
+  [ "string"  ] = encode_string,
+  [ "number"  ] = encode_number,
+  [ "boolean" ] = tostring,
+}
+
+
+encode = function(val, stack)
+  local t = type(val)
+  local f = type_func_map[t]
+  if f then
+    return f(val, stack)
+  end
+  error("unexpected type '" .. t .. "'")
+end
+
+
+function json.encode(val)
+  return ( encode(val) )
+end
+
+
+-------------------------------------------------------------------------------
+-- Decode
+-------------------------------------------------------------------------------
+
+local parse
+
+local function create_set(...) 
+  local res = {}
+  for i = 1, select("#", ...) do
+    res[ select(i, ...) ] = true
+  end
+  return res
+end
+
+local space_chars   = create_set(" ", "\t", "\r", "\n")
+local delim_chars   = create_set(" ", "\t", "\r", "\n", "]", "}", ",")
+local escape_chars  = create_set("\\", "/", '"', "b", "f", "n", "r", "t", "u")
+local literals      = create_set("true", "false", "null")
+
+local literal_map = {
+  [ "true"  ] = true,
+  [ "false" ] = false,
+  [ "null"  ] = nil,
+}
+
+
+local function next_char(str, idx, set, negate)
+  for i = idx, #str do
+    if set[str:sub(i, i)] ~= negate then
+      return i
+    end
+  end
+  return #str + 1
+end
+
+
+local function decode_error(str, idx, msg)
+  --local line_count = 1
+  --local col_count = 1
+  --for i = 1, idx - 1 do
+  --  col_count = col_count + 1
+  --  if str:sub(i, i) == "\n" then
+  --   line_count = line_count + 1
+  --    col_count = 1
+  --  end
+  -- end
+  -- emu.message( string.format("%s at line %d col %d", msg, line_count, col_count) )
+end
+
+
+local function codepoint_to_utf8(n)
+  -- http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=iws-appendixa
+  local f = math.floor
+  if n <= 0x7f then
+    return string.char(n)
+  elseif n <= 0x7ff then
+    return string.char(f(n / 64) + 192, n % 64 + 128)
+  elseif n <= 0xffff then
+    return string.char(f(n / 4096) + 224, f(n % 4096 / 64) + 128, n % 64 + 128)
+  elseif n <= 0x10ffff then
+    return string.char(f(n / 262144) + 240, f(n % 262144 / 4096) + 128,
+                       f(n % 4096 / 64) + 128, n % 64 + 128)
+  end
+  error( string.format("invalid unicode codepoint '%x'", n) )
+end
+
+
+local function parse_unicode_escape(s)
+  local n1 = tonumber( s:sub(3, 6),  16 )
+  local n2 = tonumber( s:sub(9, 12), 16 )
+  -- Surrogate pair?
+  if n2 then
+    return codepoint_to_utf8((n1 - 0xd800) * 0x400 + (n2 - 0xdc00) + 0x10000)
+  else
+    return codepoint_to_utf8(n1)
+  end
+end
+
+
+local function parse_string(str, i)
+  local has_unicode_escape = false
+  local has_surrogate_escape = false
+  local has_escape = false
+  local last
+  for j = i + 1, #str do
+    local x = str:byte(j)
+
+    if x < 32 then
+      decode_error(str, j, "control character in string")
+    end
+
+    if last == 92 then -- "\\" (escape char)
+      if x == 117 then -- "u" (unicode escape sequence)
+        local hex = str:sub(j + 1, j + 5)
+        if not hex:find("%x%x%x%x") then
+          decode_error(str, j, "invalid unicode escape in string")
+        end
+        if hex:find("^[dD][89aAbB]") then
+          has_surrogate_escape = true
+        else
+          has_unicode_escape = true
+        end
+      else
+        local c = string.char(x)
+        if not escape_chars[c] then
+          decode_error(str, j, "invalid escape char '" .. c .. "' in string")
+        end
+        has_escape = true
+      end
+      last = nil
+
+    elseif x == 34 then -- '"' (end of string)
+      local s = str:sub(i + 1, j - 1)
+      if has_surrogate_escape then 
+        s = s:gsub("\\u[dD][89aAbB]..\\u....", parse_unicode_escape)
+      end
+      if has_unicode_escape then 
+        s = s:gsub("\\u....", parse_unicode_escape)
+      end
+      if has_escape then
+        s = s:gsub("\\.", escape_char_map_inv)
+      end
+      return s, j + 1
+    
+    else
+      last = x
+    end
+  end
+  decode_error(str, i, "expected closing quote for string")
+end
+
+
+local function parse_number(str, i)
+  local x = next_char(str, i, delim_chars)
+  local s = str:sub(i, x - 1)
+  local n = tonumber(s)
+  if not n then
+    decode_error(str, i, "invalid number '" .. s .. "'")
+  end
+  return n, x
+end
+
+
+local function parse_literal(str, i)
+  local x = next_char(str, i, delim_chars)
+  local word = str:sub(i, x - 1)
+  if not literals[word] then
+    decode_error(str, i, "invalid literal '" .. word .. "'")
+  end
+  return literal_map[word], x
+end
+
+
+local function parse_array(str, i)
+  local res = {}
+  local n = 1
+  i = i + 1
+  while 1 do
+    local x
+    i = next_char(str, i, space_chars, true)
+    -- Empty / end of array?
+    if str:sub(i, i) == "]" then 
+      i = i + 1
+      break
+    end
+    -- Read token
+    x, i = parse(str, i)
+    res[n] = x
+    n = n + 1
+    -- Next token 
+    i = next_char(str, i, space_chars, true)
+    local chr = str:sub(i, i)
+    i = i + 1
+    if chr == "]" then break end
+    if chr ~= "," then decode_error(str, i, "expected ']' or ','") end
+  end
+  return res, i
+end
+
+
+local function parse_object(str, i)
+  local res = {}
+  i = i + 1
+  while 1 do
+    local key, val
+    i = next_char(str, i, space_chars, true)
+    -- Empty / end of object?
+    if str:sub(i, i) == "}" then 
+      i = i + 1
+      break
+    end
+    -- Read key
+    if str:sub(i, i) ~= '"' then
+      decode_error(str, i, "expected string for key")
+    end
+    key, i = parse(str, i)
+    -- Read ':' delimiter
+    i = next_char(str, i, space_chars, true)
+    if str:sub(i, i) ~= ":" then
+      decode_error(str, i, "expected ':' after key")
+    end
+    i = next_char(str, i + 1, space_chars, true)
+    -- Read value
+    val, i = parse(str, i)
+    -- Set
+    res[key] = val
+    -- Next token
+    i = next_char(str, i, space_chars, true)
+    local chr = str:sub(i, i)
+    i = i + 1
+    if chr == "}" then break end
+    if chr ~= "," then decode_error(str, i, "expected '}' or ','") end
+  end
+  return res, i
+end
+
+
+local char_func_map = {
+  [ '"' ] = parse_string,
+  [ "0" ] = parse_number,
+  [ "1" ] = parse_number,
+  [ "2" ] = parse_number,
+  [ "3" ] = parse_number,
+  [ "4" ] = parse_number,
+  [ "5" ] = parse_number,
+  [ "6" ] = parse_number,
+  [ "7" ] = parse_number,
+  [ "8" ] = parse_number,
+  [ "9" ] = parse_number,
+  [ "-" ] = parse_number,
+  [ "t" ] = parse_literal,
+  [ "f" ] = parse_literal,
+  [ "n" ] = parse_literal,
+  [ "[" ] = parse_array,
+  [ "{" ] = parse_object,
+}
+
+
+parse = function(str, idx)
+  local chr = str:sub(idx, idx)
+  local f = char_func_map[chr]
+  if f then
+    return f(str, idx)
+  end
+  decode_error(str, idx, "unexpected character '" .. chr .. "'")
+end
+
+
+function json.decode(str)
+  if type(str) ~= "string" then
+    error("expected argument of type string, got " .. type(str))
+  end
+  return ( parse(str, next_char(str, 1, space_chars, true)) )
+end
+
+
+return json

data/lua/PKMN_RB/pkmn_rb.lua

@@ -0,0 +1,238 @@
+local socket = require("socket")
+local json = require('json')
+local math = require('math')
+
+local STATE_OK = "Ok"
+local STATE_TENTATIVELY_CONNECTED = "Tentatively Connected"
+local STATE_INITIAL_CONNECTION_MADE = "Initial Connection Made"
+local STATE_UNINITIALIZED = "Uninitialized"
+
+local APIndex = 0x1A6E
+local APItemAddress = 0x00FF
+local EventFlagAddress = 0x1735
+local MissableAddress = 0x161A
+local HiddenItemsAddress = 0x16DE
+local RodAddress = 0x1716
+local InGame = 0x1A71
+
+local ItemsReceived = nil
+local playerName = nil
+local seedName = nil
+
+local prevstate = ""
+local curstate =  STATE_UNINITIALIZED
+local gbSocket = nil
+local frame = 0
+
+local u8 = nil
+local wU8 = nil
+local u16
+
+--Sets correct memory access functions based on whether NesHawk or QuickNES is loaded
+local function defineMemoryFunctions()
+	local memDomain = {}
+	local domains = memory.getmemorydomainlist()
+	--if domains[1] == "System Bus" then
+	--	--NesHawk
+	--	isNesHawk = true
+	--	memDomain["systembus"] = function() memory.usememorydomain("System Bus") end
+	--	memDomain["saveram"]   = function() memory.usememorydomain("Battery RAM") end
+	--	memDomain["rom"]       = function() memory.usememorydomain("PRG ROM") end
+	--elseif domains[1] == "WRAM" then
+	--	--QuickNES
+	--	memDomain["systembus"] = function() memory.usememorydomain("System Bus") end
+	--	memDomain["saveram"]   = function() memory.usememorydomain("WRAM") end
+	--	memDomain["rom"]       = function() memory.usememorydomain("PRG ROM") end
+	--end
+	memDomain["rom"] = function() memory.usememorydomain("ROM") end
+	memDomain["wram"] = function() memory.usememorydomain("WRAM") end
+	return memDomain
+end
+
+local memDomain = defineMemoryFunctions()
+u8 = memory.read_u8
+wU8 = memory.write_u8
+u16 = memory.read_u16_le
+function uRange(address, bytes)
+	data = memory.readbyterange(address - 1, bytes + 1)
+	data[0] = nil
+	return data
+end
+
+
+function table.empty (self)
+    for _, _ in pairs(self) do
+        return false
+    end
+    return true
+end
+
+function slice (tbl, s, e)
+    local pos, new = 1, {}
+    for i = s + 1, e do
+        new[pos] = tbl[i]
+        pos = pos + 1
+    end
+    return new
+end
+
+function processBlock(block)
+    if block == nil then
+        return
+    end
+    local itemsBlock = block["items"]
+    memDomain.wram()
+    if itemsBlock ~= nil then-- and u8(0x116B) ~= 0x00 then
+	--	print(itemsBlock)
+	ItemsReceived = itemsBlock
+
+   end
+end
+
+function difference(a, b)
+    local aa = {}
+    for k,v in pairs(a) do aa[v]=true end
+    for k,v in pairs(b) do aa[v]=nil end
+    local ret = {}
+    local n = 0
+    for k,v in pairs(a) do
+        if aa[v] then n=n+1 ret[n]=v end
+    end
+    return ret
+end
+
+function generateLocationsChecked()
+	memDomain.wram()
+	events = uRange(EventFlagAddress, 0x140)
+	missables = uRange(MissableAddress, 0x20)
+	hiddenitems = uRange(HiddenItemsAddress, 0x0E)
+	rod = u8(RodAddress)
+
+	data = {}
+
+	table.foreach(events, function(k, v) table.insert(data, v) end)
+	table.foreach(missables, function(k, v) table.insert(data, v) end)
+	table.foreach(hiddenitems, function(k, v) table.insert(data, v) end)
+	table.insert(data, rod)
+
+    return data
+end
+function generateSerialData()
+    memDomain.wram()
+	status = u8(0x1A73)
+    if status == 0 then
+      return nil
+    end
+    return uRange(0x1A76, u8(0x1A74))
+end
+local function arrayEqual(a1, a2)
+  if #a1 ~= #a2 then
+    return false
+  end
+
+  for i, v in ipairs(a1) do
+    if v ~= a2[i] then
+      return false
+    end
+  end
+
+  return true
+end
+
+function receive()
+    l, e = gbSocket:receive()
+    if e == 'closed' then
+        if curstate == STATE_OK then
+            print("Connection closed")
+        end
+        curstate = STATE_UNINITIALIZED
+        return
+    elseif e == 'timeout' then
+        --print("timeout") -- this keeps happening for some reason? just hide it
+        return
+    elseif e ~= nil then
+        print(e)
+        curstate = STATE_UNINITIALIZED
+        return
+    end
+    if l ~= nil then
+        processBlock(json.decode(l))
+    end
+    -- Determine Message to send back
+    memDomain.rom()
+    newPlayerName = uRange(0xFFF0, 0x10)
+    newSeedName = uRange(0xFFDC, 20)
+    if (playerName ~= nil and not arrayEqual(playerName, newPlayerName)) or (seedName ~= nil and not arrayEqual(seedName, newSeedName)) then
+        print("ROM changed, quitting")
+        curstate = STATE_UNINITIALIZED
+        return
+    end
+    playerName = newPlayerName
+    seedName = newSeedName
+    local retTable = {}
+    retTable["playerName"] = playerName
+    retTable["seedName"] = seedName
+    memDomain.wram()
+    if u8(InGame) == 0xAC then
+        retTable["locations"] = generateLocationsChecked()
+        serialData = generateSerialData()
+        if serialData ~= nil then
+        retTable["serial"] = serialData
+        end
+    end
+    msg = json.encode(retTable).."\n"
+    local ret, error = gbSocket:send(msg)
+    if ret == nil then
+        print(error)
+    elseif curstate == STATE_INITIAL_CONNECTION_MADE then
+        curstate = STATE_TENTATIVELY_CONNECTED
+    elseif curstate == STATE_TENTATIVELY_CONNECTED then
+        print("Connected!")
+        curstate = STATE_OK
+    end
+end
+
+function main()
+    if (is23Or24Or25 or is26To28) == false then
+        print("Must use a version of bizhawk 2.3.1 or higher")
+        return
+    end
+    server, error = socket.bind('localhost', 17242)
+
+    while true do
+        if not (curstate == prevstate) then
+            print("Current state: "..curstate)
+            prevstate = curstate
+        end
+        if (curstate == STATE_OK) or (curstate == STATE_INITIAL_CONNECTION_MADE) or (curstate == STATE_TENTATIVELY_CONNECTED) then
+            if (frame % 60 == 0) then
+                receive()
+                if u8(InGame) == 0xAC then
+                    ItemIndex = u16(APIndex)
+                    if ItemsReceived[ItemIndex + 1] ~= nil then
+                        wU8(APItemAddress, ItemsReceived[ItemIndex + 1] - 172000000)
+                    end
+                end
+            end
+        elseif (curstate == STATE_UNINITIALIZED) then
+            if  (frame % 60 == 0) then
+
+                print("Waiting for client.")
+
+                emu.frameadvance()
+                server:settimeout(2)
+                print("Attempting to connect")
+                local client, timeout = server:accept()
+                if timeout == nil then
+                    -- print('Initial Connection Made')
+                    curstate = STATE_INITIAL_CONNECTION_MADE
+                    gbSocket = client
+                    gbSocket:settimeout(0)
+                end
+            end
+        end
+        emu.frameadvance()
+    end
+end
+
+main()

data/lua/PKMN_RB/socket.lua

@@ -0,0 +1,132 @@
+-----------------------------------------------------------------------------
+-- LuaSocket helper module
+-- Author: Diego Nehab
+-- RCS ID: $Id: socket.lua,v 1.22 2005/11/22 08:33:29 diego Exp $
+-----------------------------------------------------------------------------
+
+-----------------------------------------------------------------------------
+-- Declare module and import dependencies
+-----------------------------------------------------------------------------
+local base = _G
+local string = require("string")
+local math = require("math")
+local socket = require("socket.core")
+module("socket")
+
+-----------------------------------------------------------------------------
+-- Exported auxiliar functions
+-----------------------------------------------------------------------------
+function connect(address, port, laddress, lport)
+    local sock, err = socket.tcp()
+    if not sock then return nil, err end
+    if laddress then
+        local res, err = sock:bind(laddress, lport, -1)
+        if not res then return nil, err end
+    end
+    local res, err = sock:connect(address, port)
+    if not res then return nil, err end
+    return sock
+end
+
+function bind(host, port, backlog)
+    local sock, err = socket.tcp()
+    if not sock then return nil, err end
+    sock:setoption("reuseaddr", true)
+    local res, err = sock:bind(host, port)
+    if not res then return nil, err end
+    res, err = sock:listen(backlog)
+    if not res then return nil, err end
+    return sock
+end
+
+try = newtry()
+
+function choose(table)
+    return function(name, opt1, opt2)
+        if base.type(name) ~= "string" then
+            name, opt1, opt2 = "default", name, opt1
+        end
+        local f = table[name or "nil"]
+        if not f then base.error("unknown key (".. base.tostring(name) ..")", 3)
+        else return f(opt1, opt2) end
+    end
+end
+
+-----------------------------------------------------------------------------
+-- Socket sources and sinks, conforming to LTN12
+-----------------------------------------------------------------------------
+-- create namespaces inside LuaSocket namespace
+sourcet = {}
+sinkt = {}
+
+BLOCKSIZE = 2048
+
+sinkt["close-when-done"] = function(sock)
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, {
+        __call = function(self, chunk, err)
+            if not chunk then
+                sock:close()
+                return 1
+            else return sock:send(chunk) end
+        end
+    })
+end
+
+sinkt["keep-open"] = function(sock)
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, {
+        __call = function(self, chunk, err)
+            if chunk then return sock:send(chunk)
+            else return 1 end
+        end
+    })
+end
+
+sinkt["default"] = sinkt["keep-open"]
+
+sink = choose(sinkt)
+
+sourcet["by-length"] = function(sock, length)
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, {
+        __call = function()
+            if length <= 0 then return nil end
+            local size = math.min(socket.BLOCKSIZE, length)
+            local chunk, err = sock:receive(size)
+            if err then return nil, err end
+            length = length - string.len(chunk)
+            return chunk
+        end
+    })
+end
+
+sourcet["until-closed"] = function(sock)
+    local done
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, {
+        __call = function()
+            if done then return nil end
+            local chunk, err, partial = sock:receive(socket.BLOCKSIZE)
+            if not err then return chunk
+            elseif err == "closed" then
+                sock:close()
+                done = 1
+                return partial
+            else return nil, err end
+        end
+    })
+end
+
+
+sourcet["default"] = sourcet["until-closed"]
+
+source = choose(sourcet)