715 lines
16 KiB
Lua
715 lines
16 KiB
Lua
-- Lua has no parallelizm, also _set_data does not call any lua functions so
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-- may be reused one global ffi buffer per lua_State
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local canvas_ffi_buffer
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local canvas_ffi_buffer_size = 0
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local ipairs_mt_supported = false
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for i, _ in ipairs(setmetatable({l={1}}, {
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__ipairs=function(self) return ipairs(self.l) end})) do
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ipairs_mt_supported = true
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end
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if not ipairs_mt_supported then
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local raw_ipairs = ipairs
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ipairs = function(t)
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local metatable = getmetatable(t)
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if metatable and metatable.__ipairs then
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return metatable.__ipairs(t)
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end
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return raw_ipairs(t)
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end
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end
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function await(co)
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local res, err
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while coroutine.status(co) ~= 'dead' do
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coroutine.yield()
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res, err = coroutine.resume(co)
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if err then
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return res, err
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end
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end
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return res, err
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end
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local _ffi = ffi
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function __vc_Canvas_set_data(self, data)
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if type(data) == "cdata" then
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self:_set_data(tostring(_ffi.cast("uintptr_t", data)))
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end
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local width = self.width
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local height = self.height
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local size = width * height * 4
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if size > canvas_ffi_buffer_size then
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canvas_ffi_buffer = _ffi.new(
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string.format("unsigned char[%s]", size)
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)
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canvas_ffi_buffer_size = size
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end
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for i=0, size - 1 do
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canvas_ffi_buffer[i] = data[i + 1]
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end
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self:_set_data(tostring(_ffi.cast("uintptr_t", canvas_ffi_buffer)))
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end
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function crc32(bytes, chksum)
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local chksum = chksum or 0
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local length = #bytes
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if type(bytes) == "table" then
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local buffer_len = _ffi.new('int[1]', length)
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local buffer = _ffi.new(
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string.format("char[%s]", length)
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)
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for i=1, length do
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buffer[i - 1] = bytes[i]
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end
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bytes = _ffi.string(buffer, buffer_len[0])
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end
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return _crc32(bytes, chksum)
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end
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-- Check if given table is an array
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function is_array(x)
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if #x > 0 then
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return true
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end
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for k, v in pairs(x) do
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return false
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end
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return true
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end
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-- Get entry-point and filename from `entry-point:filename` path
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function parse_path(path)
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local index = string.find(path, ':')
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if index == nil then
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error("invalid path syntax (':' missing)")
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end
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return string.sub(path, 1, index-1), string.sub(path, index+1, -1)
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end
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function pack.is_installed(packid)
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return file.isfile(packid..":package.json")
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end
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function pack.data_file(packid, name)
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file.mkdirs("world:data/"..packid)
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return "world:data/"..packid.."/"..name
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end
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function pack.shared_file(packid, name)
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file.mkdirs("config:"..packid)
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return "config:"..packid.."/"..name
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end
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function timeit(iters, func, ...)
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local tm = os.clock()
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for i=1,iters do
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func(...)
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end
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print("[time mcs]", (os.clock()-tm) * 1000000)
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end
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----------------------------------------------
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function math.clamp(_in, low, high)
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return math.min(math.max(_in, low), high)
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end
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function math.rand(low, high)
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return low + (high - low) * math.random()
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end
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function math.normalize(num, conf)
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conf = conf or 1
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return (num / conf) % 1
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end
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function math.round(num, places)
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places = places or 0
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local mult = 10 ^ places
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return math.floor(num * mult + 0.5) / mult
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end
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function math.sum(...)
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local numbers = nil
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local sum = 0
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if type(...) == "table" then
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numbers = ...
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else
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numbers = {...}
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end
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for _, v in ipairs(numbers) do
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sum = sum + v
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end
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return sum
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end
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----------------------------------------------
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function table.copy(t)
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local copied = {}
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for k, v in pairs(t) do
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copied[k] = v
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end
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return copied
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end
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function table.deep_copy(t)
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local copied = {}
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for k, v in pairs(t) do
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if type(v) == "table" then
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copied[k] = table.deep_copy(v)
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else
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copied[k] = v
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end
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end
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return setmetatable(copied, getmetatable(t))
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end
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function table.count_pairs(t)
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local count = 0
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for k, v in pairs(t) do
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count = count + 1
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end
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return count
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end
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function table.random(t)
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return t[math.random(1, #t)]
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end
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function table.shuffle(t)
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for i = #t, 2, -1 do
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local j = math.random(i)
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t[i], t[j] = t[j], t[i]
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end
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return t
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end
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function table.merge(t1, t2)
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for i, v in pairs(t2) do
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if type(i) == "number" then
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t1[#t1 + 1] = v
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elseif t1[i] == nil then
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t1[i] = v
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end
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end
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return t1
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end
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function table.map(t, func)
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for i, v in pairs(t) do
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t[i] = func(i, v)
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end
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return t
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end
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function table.filter(t, func)
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for i = #t, 1, -1 do
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if not func(i, t[i]) then
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table.remove(t, i)
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end
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end
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local size = #t
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for i, v in pairs(t) do
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local i_type = type(i)
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if i_type == "number" then
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if i < 1 or i > size then
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if not func(i, v) then
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t[i] = nil
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end
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end
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else
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if not func(i, v) then
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t[i] = nil
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end
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end
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end
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return t
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end
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function table.set_default(t, key, default)
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if t[key] == nil then
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t[key] = default
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return default
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end
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return t[key]
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end
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function table.flat(t)
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local flat = {}
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for _, v in pairs(t) do
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if type(v) == "table" then
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table.merge(flat, v)
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else
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table.insert(flat, v)
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end
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end
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return flat
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end
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function table.deep_flat(t)
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local flat = {}
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for _, v in pairs(t) do
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if type(v) == "table" then
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table.merge(flat, table.deep_flat(v))
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else
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table.insert(flat, v)
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end
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end
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return flat
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end
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function table.sub(arr, start, stop)
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local res = {}
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start = start or 1
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stop = stop or #arr
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for i = start, stop do
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table.insert(res, arr[i])
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end
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return res
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end
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----------------------------------------------
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local pattern_escape_replacements = {
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["("] = "%(",
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[")"] = "%)",
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["."] = "%.",
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["%"] = "%%",
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["+"] = "%+",
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["-"] = "%-",
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["*"] = "%*",
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["?"] = "%?",
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["["] = "%[",
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["]"] = "%]",
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["^"] = "%^",
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["$"] = "%$",
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["\0"] = "%z"
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}
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function string.pattern_safe(str)
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return string.gsub(str, ".", pattern_escape_replacements)
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end
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local string_sub = string.sub
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local string_find = string.find
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local string_len = string.len
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function string.explode(separator, str, withpattern)
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if (withpattern == nil) then withpattern = false end
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local ret = {}
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local current_pos = 1
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for i = 1, string_len(str) do
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local start_pos, end_pos = string_find(
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str, separator, current_pos, not withpattern)
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if (not start_pos) then break end
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ret[i] = string_sub(str, current_pos, start_pos - 1)
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current_pos = end_pos + 1
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end
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ret[#ret + 1] = string_sub(str, current_pos)
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return ret
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end
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function string.split(str, delimiter)
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return string.explode(delimiter, str)
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end
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function string.formatted_time(seconds, format)
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if (not seconds) then seconds = 0 end
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local hours = math.floor(seconds / 3600)
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local minutes = math.floor((seconds / 60) % 60)
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local millisecs = (seconds - math.floor(seconds)) * 1000
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seconds = math.floor(seconds % 60)
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if (format) then
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return string.format(format, minutes, seconds, millisecs)
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else
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return { h = hours, m = minutes, s = seconds, ms = millisecs }
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end
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end
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function string.replace(str, tofind, toreplace)
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local tbl = string.explode(tofind, str)
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if (tbl[1]) then return table.concat(tbl, toreplace) end
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return str
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end
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function string.trim(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^" .. char .. "*(.-)" .. char .. "*$") or s
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end
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function string.trim_right(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^(.-)" .. char .. "*$") or s
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end
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function string.trim_left(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^" .. char .. "*(.+)$") or s
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end
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function string.pad(str, size, char)
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char = char == nil and " " or char
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local padding = math.floor((size - #str) / 2)
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local extra_padding = (size - #str) % 2
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return string.rep(char, padding) .. str .. string.rep(char, padding + extra_padding)
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end
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function string.left_pad(str, size, char)
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char = char == nil and " " or char
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local left_padding = size - #str
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return string.rep(char, left_padding) .. str
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end
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function string.right_pad(str, size, char)
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char = char == nil and " " or char
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local right_padding = size - #str
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return str .. string.rep(char, right_padding)
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end
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string.lower = utf8.lower
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string.upper = utf8.upper
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string.escape = utf8.escape
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local meta = getmetatable("")
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function meta:__index(key)
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local val = string[key]
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if (val ~= nil) then
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return val
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elseif (tonumber(key)) then
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return string.sub(self, key, key)
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end
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end
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function string.starts_with(str, start)
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return string.sub(str, 1, string.len(start)) == start
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end
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function string.ends_with(str, endStr)
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return endStr == "" or string.sub(str, -string.len(endStr)) == endStr
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end
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function table.has(t, x)
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for i,v in ipairs(t) do
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if v == x then
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return true
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end
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end
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return false
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end
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function table.index(t, x)
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for i,v in ipairs(t) do
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if v == x then
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return i
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end
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end
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return -1
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end
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function table.remove_value(t, x)
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local index = table.index(t, x)
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if index ~= -1 then
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table.remove(t, index)
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end
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end
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function table.tostring(t)
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local s = '['
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for i,v in ipairs(t) do
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s = s..tostring(v)
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if i < #t then
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s = s..', '
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end
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end
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return s..']'
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end
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function file.readlines(path)
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local str = file.read(path)
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local lines = {}
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for s in str:gmatch("[^\r\n]+") do
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table.insert(lines, s)
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end
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return lines
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end
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local _debug_getinfo = debug.getinfo
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function debug.count_frames()
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local frames = 1
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while true do
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local info = _debug_getinfo(frames)
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if info then
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frames = frames + 1
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else
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return frames - 1
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end
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end
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end
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function debug.get_traceback(start)
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local frames = {}
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local n = 2 + (start or 0)
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while true do
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local info = _debug_getinfo(n)
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if info then
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table.insert(frames, info)
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else
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return frames
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end
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n = n + 1
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end
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end
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package = {
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loaded = {}
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}
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local __cached_scripts = {}
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local __warnings_hidden = {}
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function on_deprecated_call(name, alternatives)
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if __warnings_hidden[name] then
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return
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end
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__warnings_hidden[name] = true
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events.emit("core:warning", "deprecated call", name, debug.get_traceback(2))
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if alternatives then
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debug.warning("deprecated function called ("..name.."), use "..
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alternatives.." instead\n"..debug.traceback())
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else
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debug.warning("deprecated function called ("..name..")\n"..debug.traceback())
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end
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end
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function reload_module(name)
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local prefix, name = parse_path(name)
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local path = prefix..":modules/"..name..".lua"
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local previous = package.loaded[path]
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if not previous then
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debug.log("attempt to reload non-loaded module "..name.." ("..path..")")
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return
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end
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local script, err = load(file.read(path), path)
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if script == nil then
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error(err)
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end
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local result = script()
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if not result then
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return
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end
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for i, value in ipairs(result) do
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previous[i] = value
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end
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local copy = table.copy(result)
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for key, value in pairs(result) do
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result[key] = nil
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end
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for key, value in pairs(copy) do
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previous[key] = value
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end
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end
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local internal_locked = false
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-- Load script with caching
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--
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-- path - script path `contentpack:filename`.
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-- Example `base:scripts/tests.lua`
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--
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-- nocache - ignore cached script, load anyway
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local function __load_script(path, nocache, env)
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local packname, filename = parse_path(path)
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print(packname, filename, env)
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if internal_locked and (packname == "res" or packname == "core")
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and filename:starts_with("modules/internal") then
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error("access to core:internal modules outside of [core]")
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end
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-- __cached_scripts used in condition because cached result may be nil
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if not nocache and __cached_scripts[path] ~= nil then
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return package.loaded[path]
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end
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if not file.isfile(path) then
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error("script '"..filename.."' not found in '"..packname.."'")
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end
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local script, err = load(file.read(path), path)
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if script == nil then
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error(err)
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end
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if env then
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script = setfenv(script, env)
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end
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local result = script()
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if not nocache then
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__cached_scripts[path] = script
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package.loaded[path] = result
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end
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return result
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end
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function __vc_lock_internal_modules()
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internal_locked = true
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end
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function require(path)
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if not string.find(path, ':') then
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local prefix, _ = parse_path(_debug_getinfo(2).source)
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return require(prefix .. ':' .. path)
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end
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local prefix, file = parse_path(path)
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local env = __vc__pack_envs[prefix]
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return __load_script(prefix .. ":modules/" .. file .. ".lua", nil, env)
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end
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|
function __scripts_cleanup()
|
|
debug.log("cleaning scripts cache")
|
|
for k, v in pairs(__cached_scripts) do
|
|
local packname, _ = parse_path(k)
|
|
if packname ~= "core" then
|
|
debug.log("unloaded "..k)
|
|
__cached_scripts[k] = nil
|
|
package.loaded[k] = nil
|
|
end
|
|
end
|
|
end
|
|
|
|
function __vc__error(msg, frame, n, lastn)
|
|
if events then
|
|
local frames = debug.get_traceback(1)
|
|
events.emit(
|
|
"core:error", msg,
|
|
table.sub(frames, 1 + (n or 0), lastn and #frames-lastn)
|
|
)
|
|
end
|
|
return debug.traceback(msg, frame)
|
|
end
|
|
|
|
function __vc_warning(msg, detail, n)
|
|
if events then
|
|
events.emit(
|
|
"core:warning", msg, detail, debug.get_traceback(1 + (n or 0)))
|
|
end
|
|
end
|
|
|
|
function file.name(path)
|
|
return path:match("([^:/\\]+)$")
|
|
end
|
|
|
|
function file.stem(path)
|
|
local name = file.name(path)
|
|
return name:match("(.+)%.[^%.]+$") or name
|
|
end
|
|
|
|
function file.ext(path)
|
|
return path:match("%.([^:/\\]+)$")
|
|
end
|
|
|
|
function file.prefix(path)
|
|
return path:match("^([^:]+)")
|
|
end
|
|
|
|
function file.parent(path)
|
|
local dir = path:match("(.*)/")
|
|
if not dir then
|
|
return file.prefix(path)..":"
|
|
end
|
|
return dir
|
|
end
|
|
|
|
function file.path(path)
|
|
local pos = path:find(':')
|
|
return path:sub(pos + 1)
|
|
end
|
|
|
|
function file.join(a, b)
|
|
if a[#a] == ':' then
|
|
return a .. b
|
|
end
|
|
return a .. "/" .. b
|
|
end
|
|
|
|
bit.compile = require "core:bitwise/compiler"
|
|
bit.execute = require "core:bitwise/executor"
|
|
|
|
function __vc_create_random_methods(random_methods)
|
|
local index = 1
|
|
local buffer = nil
|
|
local buffer_size = 64
|
|
|
|
local seed_func = random_methods.seed
|
|
local random_func = random_methods.random
|
|
|
|
function random_methods:bytes(n)
|
|
local bytes = Bytearray(n)
|
|
for i=1,n do
|
|
bytes[i] = self:random(255)
|
|
end
|
|
return bytes
|
|
end
|
|
|
|
function random_methods:seed(x)
|
|
seed_func(self, x)
|
|
buffer = nil
|
|
end
|
|
|
|
function random_methods:random(a, b)
|
|
if not buffer or index > #buffer then
|
|
buffer = random_func(self, buffer_size)
|
|
index = 1
|
|
end
|
|
local value = buffer[index]
|
|
if b then
|
|
value = math.floor(value * (b - a + 1) + a)
|
|
elseif a then
|
|
value = math.floor(value * a + 1)
|
|
end
|
|
|
|
index = index + 4
|
|
return value
|
|
end
|
|
return random_methods
|
|
end
|