libs: add needed libs

libs/binser.lua

@@ -0,0 +1,687 @@
+-- binser.lua
+
+--[[
+Copyright (c) 2016 Calvin Rose
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+]]
+
+local assert = assert
+local error = error
+local select = select
+local pairs = pairs
+local getmetatable = getmetatable
+local setmetatable = setmetatable
+local tonumber = tonumber
+local type = type
+local loadstring = loadstring or load
+local concat = table.concat
+local char = string.char
+local byte = string.byte
+local format = string.format
+local sub = string.sub
+local dump = string.dump
+local floor = math.floor
+local frexp = math.frexp
+local unpack = unpack or table.unpack
+
+-- Lua 5.3 frexp polyfill
+-- From https://github.com/excessive/cpml/blob/master/modules/utils.lua
+if not frexp then
+    local log, abs, floor = math.log, math.abs, math.floor
+    local log2 = log(2)
+    frexp = function(x)
+        if x == 0 then return 0, 0 end
+        local e = floor(log(abs(x)) / log2 + 1)
+        return x / 2 ^ e, e
+    end
+end
+
+-- NIL = 202
+-- FLOAT = 203
+-- TRUE = 204
+-- FALSE = 205
+-- STRING = 206
+-- TABLE = 207
+-- REFERENCE = 208
+-- CONSTRUCTOR = 209
+-- FUNCTION = 210
+-- RESOURCE = 211
+-- INT64 = 212
+
+local mts = {}
+local ids = {}
+local serializers = {}
+local deserializers = {}
+local resources = {}
+local resources_by_name = {}
+
+local function pack(...)
+    return {...}, select("#", ...)
+end
+
+local function not_array_index(x, len)
+    return type(x) ~= "number" or x < 1 or x > len or x ~= floor(x)
+end
+
+local function type_check(x, tp, name)
+    assert(type(x) == tp,
+        format("Expected parameter %q to be of type %q.", name, tp))
+end
+
+local bigIntSupport = false
+local isInteger
+if math.type then -- Detect Lua 5.3
+    local mtype = math.type
+    bigIntSupport = loadstring[[
+    local char = string.char
+    return function(n)
+        local nn = n < 0 and -(n + 1) or n
+        local b1 = nn // 0x100000000000000
+        local b2 = nn // 0x1000000000000 % 0x100
+        local b3 = nn // 0x10000000000 % 0x100
+        local b4 = nn // 0x100000000 % 0x100
+        local b5 = nn // 0x1000000 % 0x100
+        local b6 = nn // 0x10000 % 0x100
+        local b7 = nn // 0x100 % 0x100
+        local b8 = nn % 0x100
+        if n < 0 then
+            b1, b2, b3, b4 = 0xFF - b1, 0xFF - b2, 0xFF - b3, 0xFF - b4
+            b5, b6, b7, b8 = 0xFF - b5, 0xFF - b6, 0xFF - b7, 0xFF - b8
+        end
+        return char(212, b1, b2, b3, b4, b5, b6, b7, b8)
+    end]]()
+    isInteger = function(x)
+        return mtype(x) == 'integer'
+    end
+else
+    isInteger = function(x)
+        return floor(x) == x
+    end
+end
+
+-- Copyright (C) 2012-2015 Francois Perrad.
+-- number serialization code modified from https://github.com/fperrad/lua-MessagePack
+-- Encode a number as a big-endian ieee-754 double, big-endian signed 64 bit integer, or a small integer
+local function number_to_str(n)
+    if isInteger(n) then -- int
+        if n <= 100 and n >= -27 then -- 1 byte, 7 bits of data
+            return char(n + 27)
+        elseif n <= 8191 and n >= -8192 then -- 2 bytes, 14 bits of data
+            n = n + 8192
+            return char(128 + (floor(n / 0x100) % 0x100), n % 0x100)
+        elseif bigIntSupport then
+            return bigIntSupport(n)
+        end
+    end
+    local sign = 0
+    if n < 0.0 then
+        sign = 0x80
+        n = -n
+    end
+    local m, e = frexp(n) -- mantissa, exponent
+    if m ~= m then
+        return char(203, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
+    elseif m == 1/0 then
+        if sign == 0 then
+            return char(203, 0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
+        else
+            return char(203, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
+        end
+    end
+    e = e + 0x3FE
+    if e < 1 then -- denormalized numbers
+        m = m * 2 ^ (52 + e)
+        e = 0
+    else
+        m = (m * 2 - 1) * 2 ^ 52
+    end
+    return char(203,
+                sign + floor(e / 0x10),
+                (e % 0x10) * 0x10 + floor(m / 0x1000000000000),
+                floor(m / 0x10000000000) % 0x100,
+                floor(m / 0x100000000) % 0x100,
+                floor(m / 0x1000000) % 0x100,
+                floor(m / 0x10000) % 0x100,
+                floor(m / 0x100) % 0x100,
+                m % 0x100)
+end
+
+-- Copyright (C) 2012-2015 Francois Perrad.
+-- number deserialization code also modified from https://github.com/fperrad/lua-MessagePack
+local function number_from_str(str, index)
+    local b = byte(str, index)
+    if b < 128 then
+        return b - 27, index + 1
+    elseif b < 192 then
+        return byte(str, index + 1) + 0x100 * (b - 128) - 8192, index + 2
+    end
+    local b1, b2, b3, b4, b5, b6, b7, b8 = byte(str, index + 1, index + 8)
+    if b == 212 then
+        local flip = b1 >= 128
+        if flip then -- negative
+            b1, b2, b3, b4 = 0xFF - b1, 0xFF - b2, 0xFF - b3, 0xFF - b4
+            b5, b6, b7, b8 = 0xFF - b5, 0xFF - b6, 0xFF - b7, 0xFF - b8
+        end
+        local n = ((((((b1 * 0x100 + b2) * 0x100 + b3) * 0x100 + b4) * 0x100 + b5) * 0x100 + b6) * 0x100 + b7) * 0x100 + b8
+        if flip then
+            return (-n) - 1, index + 9
+        else
+            return n, index + 9
+        end
+    end
+    local sign = b1 > 0x7F and -1 or 1
+    local e = (b1 % 0x80) * 0x10 + floor(b2 / 0x10)
+    local m = ((((((b2 % 0x10) * 0x100 + b3) * 0x100 + b4) * 0x100 + b5) * 0x100 + b6) * 0x100 + b7) * 0x100 + b8
+    local n
+    if e == 0 then
+        if m == 0 then
+            n = sign * 0.0
+        else
+            n = sign * (m / 2 ^ 52) * 2 ^ -1022
+        end
+    elseif e == 0x7FF then
+        if m == 0 then
+            n = sign * (1/0)
+        else
+            n = 0.0/0.0
+        end
+    else
+        n = sign * (1.0 + m / 2 ^ 52) * 2 ^ (e - 0x3FF)
+    end
+    return n, index + 9
+end
+
+local types = {}
+
+types["nil"] = function(x, visited, accum)
+    accum[#accum + 1] = "\202"
+end
+
+function types.number(x, visited, accum)
+    accum[#accum + 1] = number_to_str(x)
+end
+
+function types.boolean(x, visited, accum)
+    accum[#accum + 1] = x and "\204" or "\205"
+end
+
+function types.string(x, visited, accum)
+    local alen = #accum
+    if visited[x] then
+        accum[alen + 1] = "\208"
+        accum[alen + 2] = number_to_str(visited[x])
+    else
+        visited[x] = visited.next
+        visited.next =  visited.next + 1
+        accum[alen + 1] = "\206"
+        accum[alen + 2] = number_to_str(#x)
+        accum[alen + 3] = x
+    end
+end
+
+local function check_custom_type(x, visited, accum)
+    local res = resources[x]
+    if res then
+        accum[#accum + 1] = "\211"
+        types[type(res)](res, visited, accum)
+        return true
+    end
+    local mt = getmetatable(x)
+    local id = mt and ids[mt]
+    if id then
+        if x == visited.temp then
+            error("Infinite loop in constructor.")
+        end
+        visited.temp = x
+        accum[#accum + 1] = "\209"
+        types[type(id)](id, visited, accum)
+        local args, len = pack(serializers[id](x))
+        accum[#accum + 1] = number_to_str(len)
+        for i = 1, len do
+            local arg = args[i]
+            types[type(arg)](arg, visited, accum)
+        end
+        visited[x] = visited.next
+        visited.next = visited.next + 1
+        return true
+    end
+end
+
+function types.userdata(x, visited, accum)
+    if visited[x] then
+        accum[#accum + 1] = "\208"
+        accum[#accum + 1] = number_to_str(visited[x])
+    else
+        if check_custom_type(x, visited, accum) then return end
+        error("Cannot serialize this userdata.")
+    end
+end
+
+function types.table(x, visited, accum)
+    if visited[x] then
+        accum[#accum + 1] = "\208"
+        accum[#accum + 1] = number_to_str(visited[x])
+    else
+        if check_custom_type(x, visited, accum) then return end
+        visited[x] = visited.next
+        visited.next =  visited.next + 1
+        local xlen = #x
+        accum[#accum + 1] = "\207"
+        accum[#accum + 1] = number_to_str(xlen)
+        for i = 1, xlen do
+            local v = x[i]
+            types[type(v)](v, visited, accum)
+        end
+        local key_count = 0
+        for k in pairs(x) do
+            if not_array_index(k, xlen) then
+                key_count = key_count + 1
+            end
+        end
+        accum[#accum + 1] = number_to_str(key_count)
+        for k, v in pairs(x) do
+            if not_array_index(k, xlen) then
+                types[type(k)](k, visited, accum)
+                types[type(v)](v, visited, accum)
+            end
+        end
+    end
+end
+
+types["function"] = function(x, visited, accum)
+    if visited[x] then
+        accum[#accum + 1] = "\208"
+        accum[#accum + 1] = number_to_str(visited[x])
+    else
+        if check_custom_type(x, visited, accum) then return end
+        visited[x] = visited.next
+        visited.next =  visited.next + 1
+        local str = dump(x)
+        accum[#accum + 1] = "\210"
+        accum[#accum + 1] = number_to_str(#str)
+        accum[#accum + 1] = str
+    end
+end
+
+types.cdata = function(x, visited, accum)
+    if visited[x] then
+        accum[#accum + 1] = "\208"
+        accum[#accum + 1] = number_to_str(visited[x])
+    else
+        if check_custom_type(x, visited, #accum) then return end
+        error("Cannot serialize this cdata.")
+    end
+end
+
+types.thread = function() error("Cannot serialize threads.") end
+
+local function deserialize_value(str, index, visited)
+    local t = byte(str, index)
+    if not t then return end
+    if t < 128 then
+        return t - 27, index + 1
+    elseif t < 192 then
+        return byte(str, index + 1) + 0x100 * (t - 128) - 8192, index + 2
+    elseif t == 202 then
+        return nil, index + 1
+    elseif t == 203 then
+        return number_from_str(str, index)
+    elseif t == 204 then
+        return true, index + 1
+    elseif t == 205 then
+        return false, index + 1
+    elseif t == 206 then
+        local length, dataindex = deserialize_value(str, index + 1, visited)
+        local nextindex = dataindex + length
+        local substr = sub(str, dataindex, nextindex - 1)
+        visited[#visited + 1] = substr
+        return substr, nextindex
+    elseif t == 207 then
+        local count, nextindex = number_from_str(str, index + 1)
+        local ret = {}
+        visited[#visited + 1] = ret
+        for i = 1, count do
+            ret[i], nextindex = deserialize_value(str, nextindex, visited)
+        end
+        count, nextindex = number_from_str(str, nextindex)
+        for i = 1, count do
+            local k, v
+            k, nextindex = deserialize_value(str, nextindex, visited)
+            v, nextindex = deserialize_value(str, nextindex, visited)
+            ret[k] = v
+        end
+        return ret, nextindex
+    elseif t == 208 then
+        local ref, nextindex = number_from_str(str, index + 1)
+        return visited[ref], nextindex
+    elseif t == 209 then
+        local count
+        local name, nextindex = deserialize_value(str, index + 1, visited)
+        count, nextindex = number_from_str(str, nextindex)
+        local args = {}
+        for i = 1, count do
+            args[i], nextindex = deserialize_value(str, nextindex, visited)
+        end
+        local ret = deserializers[name](unpack(args))
+        visited[#visited + 1] = ret
+        return ret, nextindex
+    elseif t == 210 then
+        local length, dataindex = deserialize_value(str, index + 1, visited)
+        local nextindex = dataindex + length
+        local ret = loadstring(sub(str, dataindex, nextindex - 1))
+        visited[#visited + 1] = ret
+        return ret, nextindex
+    elseif t == 211 then
+        local res, nextindex = deserialize_value(str, index + 1, visited)
+        return resources_by_name[res], nextindex
+    elseif t == 212 then
+        return number_from_str(str, index)
+    else
+        error("Could not deserialize type byte " .. t .. ".")
+    end
+end
+
+local function serialize(...)
+    local visited = {next = 1}
+    local accum = {}
+    for i = 1, select("#", ...) do
+        local x = select(i, ...)
+        types[type(x)](x, visited, accum)
+    end
+    return concat(accum)
+end
+
+local function make_file_writer(file)
+    return setmetatable({}, {
+        __newindex = function(_, _, v)
+            file:write(v)
+        end
+    })
+end
+
+local function serialize_to_file(path, mode, ...)
+    local file, err = io.open(path, mode)
+    assert(file, err)
+    local visited = {next = 1}
+    local accum = make_file_writer(file)
+    for i = 1, select("#", ...) do
+        local x = select(i, ...)
+        types[type(x)](x, visited, accum)
+    end
+    -- flush the writer
+    file:flush()
+    file:close()
+end
+
+local function writeFile(path, ...)
+    return serialize_to_file(path, "wb", ...)
+end
+
+local function appendFile(path, ...)
+    return serialize_to_file(path, "ab", ...)
+end
+
+local function deserialize(str, index)
+    assert(type(str) == "string", "Expected string to deserialize.")
+    local vals = {}
+    index = index or 1
+    local visited = {}
+    local len = 0
+    local val
+    while index do
+        val, index = deserialize_value(str, index, visited)
+        if index then
+            len = len + 1
+            vals[len] = val
+        end
+    end
+    return vals, len
+end
+
+local function deserializeN(str, n, index)
+    assert(type(str) == "string", "Expected string to deserialize.")
+    n = n or 1
+    assert(type(n) == "number", "Expected a number for parameter n.")
+    assert(n > 0 and floor(n) == n, "N must be a poitive integer.")
+    local vals = {}
+    index = index or 1
+    local visited = {}
+    local len = 0
+    local val
+    while index and len < n do
+        val, index = deserialize_value(str, index, visited)
+        if index then
+            len = len + 1
+            vals[len] = val
+        end
+    end
+    vals[len + 1] = index
+    return unpack(vals, 1, n + 1)
+end
+
+local function readFile(path)
+    local file, err = io.open(path, "rb")
+    assert(file, err)
+    local str = file:read("*all")
+    file:close()
+    return deserialize(str)
+end
+
+local function default_deserialize(metatable)
+    return function(...)
+        local ret = {}
+        for i = 1, select("#", ...), 2 do
+            ret[select(i, ...)] = select(i + 1, ...)
+        end
+        return setmetatable(ret, metatable)
+    end
+end
+
+local function default_serialize(x)
+    assert(type(x) == "table",
+        "Default serialization for custom types only works for tables.")
+    local args = {}
+    local len = 0
+    for k, v in pairs(x) do
+        args[len + 1], args[len + 2] = k, v
+        len = len + 2
+    end
+    return unpack(args, 1, len)
+end
+
+-- Templating
+
+local function normalize_template(template)
+    local ret = {}
+    for i = 1, #template do
+        ret[i] = template[i]
+    end
+    local non_array_part = {}
+    -- The non-array part of the template (nested templates) have to be deterministic, so they are sorted.
+    -- This means that inherently non deterministicly sortable keys (tables, functions) should NOT be used
+    -- in templates. Looking for way around this.
+    for k in pairs(template) do
+        if not_array_index(k, #template) then
+            non_array_part[#non_array_part + 1] = k
+        end
+    end
+    table.sort(non_array_part)
+    for i = 1, #non_array_part do
+        local name = non_array_part[i]
+        ret[#ret + 1] = {name, normalize_template(template[name])}
+    end
+    return ret
+end
+
+local function templatepart_serialize(part, argaccum, x, len)
+    local extras = {}
+    local extracount = 0
+    for k, v in pairs(x) do
+        extras[k] = v
+        extracount = extracount + 1
+    end
+    for i = 1, #part do
+        extracount = extracount - 1
+        if type(part[i]) == "table" then
+            extras[part[i][1]] = nil
+            len = templatepart_serialize(part[i][2], argaccum, x[part[i][1]], len)
+        else
+            extras[part[i]] = nil
+            len = len + 1
+            argaccum[len] = x[part[i]]
+        end
+    end
+    if extracount > 0 then
+        argaccum[len + 1] = extras
+    else
+        argaccum[len + 1] = nil
+    end
+    return len + 1
+end
+
+local function templatepart_deserialize(ret, part, values, vindex)
+    for i = 1, #part do
+        local name = part[i]
+        if type(name) == "table" then
+            local newret = {}
+            ret[name[1]] = newret
+            vindex = templatepart_deserialize(newret, name[2], values, vindex)
+        else
+            ret[name] = values[vindex]
+            vindex = vindex + 1
+        end
+    end
+    local extras = values[vindex]
+    if extras then
+        for k, v in pairs(extras) do
+            ret[k] = v
+        end
+    end
+    return vindex + 1
+end
+
+local function template_serializer_and_deserializer(metatable, template)
+    return function(x)
+        argaccum = {}
+        local len = templatepart_serialize(template, argaccum, x, 0)
+        return unpack(argaccum, 1, len)
+    end, function(...)
+        local ret = {}
+        local len = select("#", ...)
+        local args = {...}
+        templatepart_deserialize(ret, template, args, 1)
+        return setmetatable(ret, metatable)
+    end
+end
+
+local function register(metatable, name, serialize, deserialize)
+    name = name or metatable.name
+    serialize = serialize or metatable._serialize
+    deserialize = deserialize or metatable._deserialize
+    if not serialize then
+        if metatable._template then
+            local t = normalize_template(metatable._template)
+            serialize, deserialize = template_serializer_and_deserializer(metatable, t)
+        elseif not deserialize then
+            serialize = default_serialize
+            deserialize = default_deserialize(metatable)
+        else
+            serialize = metatable
+        end
+    end
+    type_check(metatable, "table", "metatable")
+    type_check(name, "string", "name")
+    type_check(serialize, "function", "serialize")
+    type_check(deserialize, "function", "deserialize")
+    assert(not ids[metatable], "Metatable already registered.")
+    assert(not mts[name], ("Name %q already registered."):format(name))
+    mts[name] = metatable
+    ids[metatable] = name
+    serializers[name] = serialize
+    deserializers[name] = deserialize
+    return metatable
+end
+
+local function unregister(item)
+    local name, metatable
+    if type(item) == "string" then -- assume name
+        name, metatable = item, mts[item]
+    else -- assume metatable
+        name, metatable = ids[item], item
+    end
+    type_check(name, "string", "name")
+    type_check(metatable, "table", "metatable")
+    mts[name] = nil
+    ids[metatable] = nil
+    serializers[name] = nil
+    deserializers[name] = nil
+    return metatable
+end
+
+local function registerClass(class, name)
+    name = name or class.name
+    if class.__instanceDict then -- middleclass
+        register(class.__instanceDict, name)
+    else -- assume 30log or similar library
+        register(class, name)
+    end
+    return class
+end
+
+local function registerResource(resource, name)
+    type_check(name, "string", "name")
+    assert(not resources[resource],
+        "Resource already registered.")
+    assert(not resources_by_name[name],
+        format("Resource %q already exists.", name))
+    resources_by_name[name] = resource
+    resources[resource] = name
+    return resource
+end
+
+local function unregisterResource(name)
+    type_check(name, "string", "name")
+    assert(resources_by_name[name], format("Resource %q does not exist.", name))
+    local resource = resources_by_name[name]
+    resources_by_name[name] = nil
+    resources[resource] = nil
+    return resource
+end
+
+return {
+    -- aliases
+    s = serialize,
+    d = deserialize,
+    dn = deserializeN,
+    r = readFile,
+    w = writeFile,
+    a = appendFile,
+
+    serialize = serialize,
+    deserialize = deserialize,
+    deserializeN = deserializeN,
+    readFile = readFile,
+    writeFile = writeFile,
+    appendFile = appendFile,
+    register = register,
+    unregister = unregister,
+    registerResource = registerResource,
+    unregisterResource = unregisterResource,
+    registerClass = registerClass
+}

libs/classic.lua

@@ -0,0 +1,68 @@
+--
+-- classic
+--
+-- Copyright (c) 2014, rxi
+--
+-- This module is free software; you can redistribute it and/or modify it under
+-- the terms of the MIT license. See LICENSE for details.
+--
+
+
+local Object = {}
+Object.__index = Object
+
+
+function Object:new()
+end
+
+
+function Object:extend()
+  local cls = {}
+  for k, v in pairs(self) do
+    if k:find("__") == 1 then
+      cls[k] = v
+    end
+  end
+  cls.__index = cls
+  cls.super = self
+  setmetatable(cls, self)
+  return cls
+end
+
+
+function Object:implement(...)
+  for _, cls in pairs({...}) do
+    for k, v in pairs(cls) do
+      if self[k] == nil and type(v) == "function" then
+        self[k] = v
+      end
+    end
+  end
+end
+
+
+function Object:is(T)
+  local mt = getmetatable(self)
+  while mt do
+    if mt == T then
+      return true
+    end
+    mt = getmetatable(mt)
+  end
+  return false
+end
+
+
+function Object:__tostring()
+  return "Object"
+end
+
+
+function Object:__call(...)
+  local obj = setmetatable({}, self)
+  obj:new(...)
+  return obj
+end
+
+
+return Object

libs/cscreen.lua

@@ -0,0 +1,99 @@
+--[[
+CScreen v1.3 by CodeNMore
+A simple way to make resolution-independent Love2D games
+Tested for LOVE 0.10.1
+See: https://github.com/CodeNMore/CScreen
+Zlib License:
+Copyright (c) 2016 CodeNMore
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from
+the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+1. The origin of this software must not be misrepresented; you must not
+claim that you wrote the original software. If you use this software in
+a product, an acknowledgment in the product documentation would be appreciated
+but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+--]]
+
+local CScreen = {}
+local rx, ry, ctr = 800, 600, true
+local rxv, ryv, fsv, fsvr = 800, 600, 1.0, 1.0
+local tx, ty, rwf, rhf = 0, 0, 800, 600
+local cr, cg, cb, ca = 0, 0, 0, 255
+
+-- Initializes CScreen with the initial size values
+function CScreen.init(tw, th, cntr)
+	rx = tw or 800
+	ry = th or 600
+	ctr = cntr or false
+	CScreen.update(love.graphics.getWidth(), love.graphics.getHeight())
+end
+
+-- Draws letterbox borders
+function CScreen.cease()
+	if ctr then
+		local pr, pg, pb, pa = love.graphics.getColor()
+		love.graphics.setColor(cr, cg, cb, ca)
+		love.graphics.scale(fsvr, fsvr)
+
+		if tx ~= 0 then
+			love.graphics.rectangle("fill", -tx, 0, tx, rhf)
+			love.graphics.rectangle("fill", rxv, 0, tx, rhf)
+		elseif ty ~= 0 then
+			love.graphics.rectangle("fill", 0, -ty, rwf, ty)
+			love.graphics.rectangle("fill", 0, ryv, rwf, ty)
+		end
+
+		love.graphics.setColor(pr, pg, pb, pa)
+	end
+end
+
+-- Scales and centers all graphics properly
+function CScreen.apply()
+	if ctr then
+		love.graphics.translate(tx, ty)
+	end
+	love.graphics.scale(fsv, fsv)
+end
+
+-- Updates CScreen when the window size changes
+function CScreen.update(w, h)
+	local sx = w / rx
+	local sy = h / ry
+	fsv = math.min(sx, sy)
+	fsvr = 1 / fsv
+	-- Centering
+	if ctr and fsv == sx then -- Vertically
+		tx = 0
+		ty = (h / 2) - (ry * fsv / 2)
+	elseif ctr and fsv == sy then -- Horizontally
+		ty = 0
+		tx = (w / 2) - (rx * fsv / 2)
+	end
+	-- Variable sets
+	rwf = w
+	rhf = h
+	rxv = rx * fsv
+	ryv = ry * fsv
+end
+
+-- Convert from window coordinates to target coordinates
+function CScreen.project(x, y)
+	return math.floor((x - tx) / fsv), math.floor((y - ty) / fsv)
+end
+
+-- Change letterbox color
+function CScreen.setColor(r, g, b, a)
+	cr = r
+	cg = g
+	cb = b
+	ca = a
+end
+
+-- Return the table for use
+return CScreen

libs/lovebird.lua

@@ -0,0 +1,737 @@
+--
+-- lovebird
+--
+-- Copyright (c) 2017 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 socket = require "socket"
+
+local lovebird = { _version = "0.4.3" }
+
+lovebird.loadstring = loadstring or load
+lovebird.inited = false
+lovebird.host = "*"
+lovebird.buffer = ""
+lovebird.lines = {}
+lovebird.connections = {}
+lovebird.pages = {}
+
+lovebird.wrapprint = true
+lovebird.timestamp = true
+lovebird.allowhtml = false
+lovebird.echoinput = true
+lovebird.port = 8000
+lovebird.whitelist = { "127.0.0.1" }
+lovebird.maxlines = 200
+lovebird.updateinterval = .5
+
+
+lovebird.pages["index"] = [[
+<?lua
+-- Handle console input
+if req.parsedbody.input then
+  local str = req.parsedbody.input
+  if lovebird.echoinput then
+    lovebird.pushline({ type = 'input', str = str })
+  end
+  if str:find("^=") then
+    str = "print(" .. str:sub(2) .. ")"
+  end
+  xpcall(function() assert(lovebird.loadstring(str, "input"))() end,
+         lovebird.onerror)
+end
+?>
+
+<!doctype html>
+<html>
+  <head>
+  <meta http-equiv="x-ua-compatible" content="IE=Edge"/>
+  <meta charset="utf-8">
+  <title>lovebird</title>
+  <style>
+    body {
+      margin: 0px;
+      font-size: 14px;
+      font-family: helvetica, verdana, sans;
+      background: #FFFFFF;
+    }
+    form {
+      margin-bottom: 0px;
+    }
+    .timestamp {
+      color: #909090;
+      padding-right: 4px;
+    }
+    .repeatcount {
+      color: #F0F0F0;
+      background: #505050;
+      font-size: 11px;
+      font-weight: bold;
+      text-align: center;
+      padding-left: 4px;
+      padding-right: 4px;
+      padding-top: 0px;
+      padding-bottom: 0px;
+      border-radius: 7px;
+      display: inline-block;
+    }
+    .errormarker {
+      color: #F0F0F0;
+      background: #8E0000;
+      font-size: 11px;
+      font-weight: bold;
+      text-align: center;
+      border-radius: 8px;
+      width: 17px;
+      padding-top: 0px;
+      padding-bottom: 0px;
+      display: inline-block;
+    }
+    .greybordered {
+      margin: 12px;
+      background: #F0F0F0;
+      border: 1px solid #E0E0E0;
+      border-radius: 3px;
+    }
+    .inputline {
+      font-family: mono, courier;
+      font-size: 13px;
+      color: #606060;
+    }
+    .inputline:before {
+      content: '\00B7\00B7\00B7';
+      padding-right: 5px;
+    }
+    .errorline {
+      color: #8E0000;
+    }
+    #header {
+      background: #101010;
+      height: 25px;
+      color: #F0F0F0;
+      padding: 9px
+    }
+    #title {
+      float: left;
+      font-size: 20px;
+    }
+    #title a {
+      color: #F0F0F0;
+      text-decoration: none;
+    }
+    #title a:hover {
+      color: #FFFFFF;
+    }
+    #version {
+      font-size: 10px;
+    }
+    #status {
+      float: right;
+      font-size: 14px;
+      padding-top: 4px;
+    }
+    #main a {
+      color: #000000;
+      text-decoration: none;
+      background: #E0E0E0;
+      border: 1px solid #D0D0D0;
+      border-radius: 3px;
+      padding-left: 2px;
+      padding-right: 2px;
+      display: inline-block;
+    }
+    #main a:hover {
+      background: #D0D0D0;
+      border: 1px solid #C0C0C0;
+    }
+    #console {
+      position: absolute;
+      top: 40px; bottom: 0px; left: 0px; right: 312px;
+    }
+    #input {
+      position: absolute;
+      margin: 10px;
+      bottom: 0px; left: 0px; right: 0px;
+    }
+    #inputbox {
+      width: 100%;
+      font-family: mono, courier;
+      font-size: 13px;
+    }
+    #output {
+      overflow-y: scroll;
+      position: absolute;
+      margin: 10px;
+      line-height: 17px;
+      top: 0px; bottom: 36px; left: 0px; right: 0px;
+    }
+    #env {
+      position: absolute;
+      top: 40px; bottom: 0px; right: 0px;
+      width: 300px;
+    }
+    #envheader {
+      padding: 5px;
+      background: #E0E0E0;
+    }
+    #envvars {
+      position: absolute;
+      left: 0px; right: 0px; top: 25px; bottom: 0px;
+      margin: 10px;
+      overflow-y: scroll;
+      font-size: 12px;
+    }
+  </style>
+  </head>
+  <body>
+    <div id="header">
+      <div id="title">
+        <a href="https://github.com/rxi/lovebird">lovebird</a>
+        <span id="version"><?lua echo(lovebird._version) ?></span>
+      </div>
+      <div id="status"></div>
+    </div>
+    <div id="main">
+      <div id="console" class="greybordered">
+        <div id="output"> <?lua echo(lovebird.buffer) ?> </div>
+        <div id="input">
+          <form method="post"
+                onkeydown="return onInputKeyDown(event);"
+                onsubmit="onInputSubmit(); return false;">
+            <input id="inputbox" name="input" type="text"
+                autocomplete="off"></input>
+          </form>
+        </div>
+      </div>
+      <div id="env" class="greybordered">
+        <div id="envheader"></div>
+        <div id="envvars"></div>
+      </div>
+    </div>
+    <script>
+      document.getElementById("inputbox").focus();
+
+      var changeFavicon = function(href) {
+        var old = document.getElementById("favicon");
+        if (old) document.head.removeChild(old);
+        var link = document.createElement("link");
+        link.id = "favicon";
+        link.rel = "shortcut icon";
+        link.href = href;
+        document.head.appendChild(link);
+      }
+
+      var truncate = function(str, len) {
+        if (str.length <= len) return str;
+        return str.substring(0, len - 3) + "...";
+      }
+
+      var geturl = function(url, onComplete, onFail) {
+        var req = new XMLHttpRequest();
+        req.onreadystatechange = function() {
+          if (req.readyState != 4) return;
+          if (req.status == 200) {
+            if (onComplete) onComplete(req.responseText);
+          } else {
+            if (onFail) onFail(req.responseText);
+          }
+        }
+        url += (url.indexOf("?") > -1 ? "&_=" : "?_=") + Math.random();
+        req.open("GET", url, true);
+        req.send();
+      }
+
+      var divContentCache = {}
+      var updateDivContent = function(id, content) {
+        if (divContentCache[id] != content) {
+          document.getElementById(id).innerHTML = content;
+          divContentCache[id] = content
+          return true;
+        }
+        return false;
+      }
+
+      var onInputSubmit = function() {
+        var b = document.getElementById("inputbox");
+        var req = new XMLHttpRequest();
+        req.open("POST", "/", true);
+        req.send("input=" + encodeURIComponent(b.value));
+        /* Do input history */
+        if (b.value && inputHistory[0] != b.value) {
+          inputHistory.unshift(b.value);
+        }
+        inputHistory.index = -1;
+        /* Reset */
+        b.value = "";
+        refreshOutput();
+      }
+
+      /* Input box history */
+      var inputHistory = [];
+      inputHistory.index = 0;
+      var onInputKeyDown = function(e) {
+        var key = e.which || e.keyCode;
+        if (key != 38 && key != 40) return true;
+        var b = document.getElementById("inputbox");
+        if (key == 38 && inputHistory.index < inputHistory.length - 1) {
+          /* Up key */
+          inputHistory.index++;
+        }
+        if (key == 40 && inputHistory.index >= 0) {
+          /* Down key */
+          inputHistory.index--;
+        }
+        b.value = inputHistory[inputHistory.index] || "";
+        b.selectionStart = b.value.length;
+        return false;
+      }
+
+      /* Output buffer and status */
+      var refreshOutput = function() {
+        geturl("/buffer", function(text) {
+          updateDivContent("status", "connected &#9679;");
+          if (updateDivContent("output", text)) {
+            var div = document.getElementById("output");
+            div.scrollTop = div.scrollHeight;
+          }
+          /* Update favicon */
+          changeFavicon("data:image/png;base64," +
+"iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAAP1BMVEUAAAAAAAAAAAD////19fUO"+
+"Dg7v7+/h4eGzs7MlJSUeHh7n5+fY2NjJycnGxsa3t7eioqKfn5+QkJCHh4d+fn7zU+b5AAAAAnRS"+
+"TlPlAFWaypEAAABRSURBVBjTfc9HDoAwDERRQ+w0ern/WQkZaUBC4e/mrWzppH9VJjbjZg1Ii2rM"+
+"DyR1JZ8J0dVWggIGggcEwgbYCRbuPRqgyjHNpzUP+39GPu9fgloC5L9DO0sAAAAASUVORK5CYII="
+          );
+        },
+        function(text) {
+          updateDivContent("status", "disconnected &#9675;");
+          /* Update favicon */
+          changeFavicon("data:image/png;base64," +
+"iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAAYFBMVEUAAAAAAAAAAADZ2dm4uLgM"+
+"DAz29vbz8/Pv7+/h4eHIyMiwsLBtbW0lJSUeHh4QEBDn5+fS0tLDw8O0tLSioqKfn5+QkJCHh4d+"+
+"fn5ycnJmZmZgYGBXV1dLS0tFRUUGBgZ0He44AAAAAnRSTlPlAFWaypEAAABeSURBVBjTfY9HDoAw"+
+"DAQD6Z3ey/9/iXMxkVDYw0g7F3tJReosUKHnwY4pCM+EtOEVXrb7wVRA0dMbaAcUwiVeDQq1Jp4a"+
+"xUg5kE0ooqZu68Di2Tgbs/DiY/9jyGf+AyFKBAK7KD2TAAAAAElFTkSuQmCC"
+          );
+        });
+      }
+      setInterval(refreshOutput,
+                  <?lua echo(lovebird.updateinterval) ?> * 1000);
+
+      /* Environment variable view */
+      var envPath = "";
+      var refreshEnv = function() {
+        geturl("/env.json?p=" + envPath, function(text) {
+          var json = eval("(" + text + ")");
+
+          /* Header */
+          var html = "<a href='#' onclick=\"setEnvPath('')\">env</a>";
+          var acc = "";
+          var p = json.path != "" ? json.path.split(".") : [];
+          for (var i = 0; i < p.length; i++) {
+            acc += "." + p[i];
+            html += " <a href='#' onclick=\"setEnvPath('" + acc + "')\">" +
+                    truncate(p[i], 10) + "</a>";
+          }
+          updateDivContent("envheader", html);
+
+          /* Handle invalid table path */
+          if (!json.valid) {
+            updateDivContent("envvars", "Bad path");
+            return;
+          }
+
+          /* Variables */
+          var html = "<table>";
+          for (var i = 0; json.vars[i]; i++) {
+            var x = json.vars[i];
+            var fullpath = (json.path + "." + x.key).replace(/^\./, "");
+            var k = truncate(x.key, 15);
+            if (x.type == "table") {
+              k = "<a href='#' onclick=\"setEnvPath('" + fullpath + "')\">" +
+                  k + "</a>";
+            }
+            var v = "<a href='#' onclick=\"insertVar('" +
+                    fullpath.replace(/\.(-?[0-9]+)/g, "[$1]") +
+                    "');\">" + x.value + "</a>"
+            html += "<tr><td>" + k + "</td><td>" + v + "</td></tr>";
+          }
+          html += "</table>";
+          updateDivContent("envvars", html);
+        });
+      }
+      var setEnvPath = function(p) {
+        envPath = p;
+        refreshEnv();
+      }
+      var insertVar = function(p) {
+        var b = document.getElementById("inputbox");
+        b.value += p;
+        b.focus();
+      }
+      setInterval(refreshEnv, <?lua echo(lovebird.updateinterval) ?> * 1000);
+    </script>
+  </body>
+</html>
+]]
+
+
+lovebird.pages["buffer"] = [[ <?lua echo(lovebird.buffer) ?> ]]
+
+
+lovebird.pages["env.json"] = [[
+<?lua
+  local t = _G
+  local p = req.parsedurl.query.p or ""
+  p = p:gsub("%.+", "."):match("^[%.]*(.*)[%.]*$")
+  if p ~= "" then
+    for x in p:gmatch("[^%.]+") do
+      t = t[x] or t[tonumber(x)]
+      -- Return early if path does not exist
+      if type(t) ~= "table" then
+        echo('{ "valid": false, "path": ' .. string.format("%q", p) .. ' }')
+        return
+      end
+    end
+  end
+?>
+{
+  "valid": true,
+  "path": "<?lua echo(p) ?>",
+  "vars": [
+    <?lua
+      local keys = {}
+      for k in pairs(t) do
+        if type(k) == "number" or type(k) == "string" then
+          table.insert(keys, k)
+        end
+      end
+      table.sort(keys, lovebird.compare)
+      for _, k in pairs(keys) do
+        local v = t[k]
+    ?>
+      {
+        "key": "<?lua echo(k) ?>",
+        "value": <?lua echo(
+                          string.format("%q",
+                            lovebird.truncate(
+                              lovebird.htmlescape(
+                                tostring(v)), 26))) ?>,
+        "type": "<?lua echo(type(v)) ?>",
+      },
+    <?lua end ?>
+  ]
+}
+]]
+
+
+
+function lovebird.init()
+  -- Init server
+  lovebird.server = assert(socket.bind(lovebird.host, lovebird.port))
+  lovebird.addr, lovebird.port = lovebird.server:getsockname()
+  lovebird.server:settimeout(0)
+  -- Wrap print
+  lovebird.origprint = print
+  if lovebird.wrapprint then
+    local oldprint = print
+    print = function(...)
+      oldprint(...)
+      lovebird.print(...)
+    end
+  end
+  -- Compile page templates
+  for k, page in pairs(lovebird.pages) do
+    lovebird.pages[k] = lovebird.template(page, "lovebird, req",
+                                          "pages." .. k)
+  end
+  lovebird.inited = true
+end
+
+
+function lovebird.template(str, params, chunkname)
+  params = params and ("," .. params) or ""
+  local f = function(x) return string.format(" echo(%q)", x) end
+  str = ("?>"..str.."<?lua"):gsub("%?>(.-)<%?lua", f)
+  str = "local echo " .. params .. " = ..." .. str
+  local fn = assert(lovebird.loadstring(str, chunkname))
+  return function(...)
+    local output = {}
+    local echo = function(str) table.insert(output, str) end
+    fn(echo, ...)
+    return table.concat(lovebird.map(output, tostring))
+  end
+end
+
+
+function lovebird.map(t, fn)
+  local res = {}
+  for k, v in pairs(t) do res[k] = fn(v) end
+  return res
+end
+
+
+function lovebird.trace(...)
+  local str = "[lovebird] " .. table.concat(lovebird.map({...}, tostring), " ")
+  print(str)
+  if not lovebird.wrapprint then lovebird.print(str) end
+end
+
+
+function lovebird.unescape(str)
+  local f = function(x) return string.char(tonumber("0x"..x)) end
+  return (str:gsub("%+", " "):gsub("%%(..)", f))
+end
+
+
+function lovebird.parseurl(url)
+  local res = {}
+  res.path, res.search = url:match("/([^%?]*)%??(.*)")
+  res.query = {}
+  for k, v in res.search:gmatch("([^&^?]-)=([^&^#]*)") do
+    res.query[k] = lovebird.unescape(v)
+  end
+  return res
+end
+
+
+local htmlescapemap = {
+  ["<"] = "&lt;",
+  ["&"] = "&amp;",
+  ['"'] = "&quot;",
+  ["'"] = "&#039;",
+}
+
+function lovebird.htmlescape(str)
+  return ( str:gsub("[<&\"']", htmlescapemap) )
+end
+
+
+function lovebird.truncate(str, len)
+  if #str <= len then
+    return str
+  end
+  return str:sub(1, len - 3) .. "..."
+end
+
+
+function lovebird.compare(a, b)
+  local na, nb = tonumber(a), tonumber(b)
+  if na then
+    if nb then return na < nb end
+    return false
+  elseif nb then
+    return true
+  end
+  return tostring(a) < tostring(b)
+end
+
+
+function lovebird.checkwhitelist(addr)
+  if lovebird.whitelist == nil then return true end
+  for _, a in pairs(lovebird.whitelist) do
+    local ptn = "^" .. a:gsub("%.", "%%."):gsub("%*", "%%d*") .. "$"
+    if addr:match(ptn) then return true end
+  end
+  return false
+end
+
+
+function lovebird.clear()
+  lovebird.lines = {}
+  lovebird.buffer = ""
+end
+
+
+function lovebird.pushline(line)
+  line.time = os.time()
+  line.count = 1
+  table.insert(lovebird.lines, line)
+  if #lovebird.lines > lovebird.maxlines then
+    table.remove(lovebird.lines, 1)
+  end
+  lovebird.recalcbuffer()
+end
+
+
+function lovebird.recalcbuffer()
+  local function doline(line)
+    local str = line.str
+    if not lovebird.allowhtml then
+      str = lovebird.htmlescape(line.str):gsub("\n", "<br>")
+    end
+    if line.type == "input" then
+      str = '<span class="inputline">' .. str .. '</span>'
+    else
+      if line.type == "error" then
+        str = '<span class="errormarker">!</span> ' .. str
+        str = '<span class="errorline">' .. str .. '</span>'
+      end
+      if line.count > 1 then
+        str = '<span class="repeatcount">' .. line.count .. '</span> ' .. str
+      end
+      if lovebird.timestamp then
+        str = os.date('<span class="timestamp">%H:%M:%S</span> ', line.time) ..
+              str
+      end
+    end
+    return str
+  end
+  lovebird.buffer = table.concat(lovebird.map(lovebird.lines, doline), "<br>")
+end
+
+
+function lovebird.print(...)
+  local t = {}
+  for i = 1, select("#", ...) do
+    table.insert(t, tostring(select(i, ...)))
+  end
+  local str = table.concat(t, " ")
+  local last = lovebird.lines[#lovebird.lines]
+  if last and str == last.str then
+    -- Update last line if this line is a duplicate of it
+    last.time = os.time()
+    last.count = last.count + 1
+    lovebird.recalcbuffer()
+  else
+    -- Create new line
+    lovebird.pushline({ type = "output", str = str })
+  end
+end
+
+
+function lovebird.onerror(err)
+  lovebird.pushline({ type = "error", str = err })
+  if lovebird.wrapprint then
+    lovebird.origprint("[lovebird] ERROR: " .. err)
+  end
+end
+
+
+function lovebird.onrequest(req, client)
+  local page = req.parsedurl.path
+  page = page ~= "" and page or "index"
+  -- Handle "page not found"
+  if not lovebird.pages[page] then
+    return "HTTP/1.1 404\r\nContent-Length: 8\r\n\r\nBad page"
+  end
+  -- Handle page
+  local str
+  xpcall(function()
+    local data = lovebird.pages[page](lovebird, req)
+    local contenttype = "text/html"
+    if string.match(page, "%.json$") then
+      contenttype = "application/json"
+    end
+    str = "HTTP/1.1 200 OK\r\n" ..
+          "Content-Type: " .. contenttype .. "\r\n" ..
+          "Content-Length: " .. #data .. "\r\n" ..
+          "\r\n" .. data
+  end, lovebird.onerror)
+  return str
+end
+
+
+function lovebird.receive(client, pattern)
+  while 1 do
+    local data, msg = client:receive(pattern)
+    if not data then
+      if msg == "timeout" then
+        -- Wait for more data
+        coroutine.yield(true)
+      else
+        -- Disconnected -- yielding nil means we're done
+        coroutine.yield(nil)
+      end
+    else
+      return data
+    end
+  end
+end
+
+
+function lovebird.send(client, data)
+  local idx = 1
+  while idx < #data do
+    local res, msg = client:send(data, idx)
+    if not res and msg == "closed" then
+      -- Handle disconnect
+      coroutine.yield(nil)
+    else
+      idx = idx + res
+      coroutine.yield(true)
+    end
+  end
+end
+
+
+function lovebird.onconnect(client)
+  -- Create request table
+  local requestptn = "(%S*)%s*(%S*)%s*(%S*)"
+  local req = {}
+  req.socket = client
+  req.addr, req.port = client:getsockname()
+  req.request = lovebird.receive(client, "*l")
+  req.method, req.url, req.proto = req.request:match(requestptn)
+  req.headers = {}
+  while 1 do
+    local line, msg = lovebird.receive(client, "*l")
+    if not line or #line == 0 then break end
+    local k, v = line:match("(.-):%s*(.*)$")
+    req.headers[k] = v
+  end
+  if req.headers["Content-Length"] then
+    req.body = lovebird.receive(client, req.headers["Content-Length"])
+  end
+  -- Parse body
+  req.parsedbody = {}
+  if req.body then
+    for k, v in req.body:gmatch("([^&]-)=([^&^#]*)") do
+      req.parsedbody[k] = lovebird.unescape(v)
+    end
+  end
+  -- Parse request line's url
+  req.parsedurl = lovebird.parseurl(req.url)
+  -- Handle request; get data to send and send
+  local data = lovebird.onrequest(req)
+  lovebird.send(client, data)
+  -- Clear up
+  client:close()
+end
+
+
+function lovebird.update()
+  if not lovebird.inited then lovebird.init() end
+  -- Handle new connections
+  while 1 do
+    -- Accept new connections
+    local client = lovebird.server:accept()
+    if not client then break end
+    client:settimeout(0)
+    local addr = client:getsockname()
+    if lovebird.checkwhitelist(addr) then
+      -- Connection okay -- create and add coroutine to set
+      local conn = coroutine.wrap(function()
+        xpcall(function() lovebird.onconnect(client) end, function() end)
+      end)
+      lovebird.connections[conn] = true
+    else
+      -- Reject connection not on whitelist
+      lovebird.trace("got non-whitelisted connection attempt: ", addr)
+      client:close()
+    end
+  end
+  -- Handle existing connections
+  for conn in pairs(lovebird.connections) do
+    -- Resume coroutine, remove if it has finished
+    local status = conn()
+    if status == nil then
+      lovebird.connections[conn] = nil
+    end
+  end
+end
+
+
+return lovebird