diff --git a/kai/gitgud.lua b/kai/gitgud.lua
new file mode 100644
index 0000000..2aa2d0f
--- /dev/null
+++ b/kai/gitgud.lua
@@ -0,0 +1,156 @@
+--[[
+
+Usages:
+> gitgud sync <repo path> <local path>
+download file from repo
+
+> gitgud delete <local path>
+delete downloaded file
+
+> gitgud
+re-download all synced files
+
+> gitgud run <repo path>
+fetch and exec file from repo
+
+]]
+
+if not http then error("http is not enabled") end
+
+local function get(url)
+    local response, err = http.get(url)
+    if not response then
+        return nil, err
+    end
+
+    local status, err = response.getResponseCode()
+    if status ~= 200 then
+        return nil, (status .. " " .. err)
+    end
+
+    local result = response.readAll()
+    response.close()
+    return result
+end
+
+local function ensure_dotlua(path)
+    if string.match(path, "%.lua$") then
+        return path
+    else
+        return path .. ".lua"
+    end
+end
+
+local function gitea_url(path)
+    return "https://gitea.leafbla.de/dominic/turtles/raw/branch/master/".. path
+end
+
+local function download_file(repo_path, local_path)
+    write("Downloading " .. repo_path .. " as " .. local_path .. "... ")
+    local result, err = get(gitea_url(repo_path))
+    if not result then
+        print()
+        printError(err)
+        return false
+    end
+
+    local f = fs.open(local_path, "w")
+    f.write(result)
+    f.close()
+
+    print("OK")
+    return true
+end
+
+-- keep track of downloaded files
+local storage_path = ".gitgud"
+
+local storage = {}   
+if fs.exists(storage_path) then
+    local f = fs.open(storage_path, "r")
+    storage = textutils.unserialize(f.readAll())
+    f.close()
+end
+
+local function update_storage()
+    local f = fs.open(storage_path, "w")
+    f.write(textutils.serialize(storage))
+    f.close()
+end
+
+local args = {...}
+
+if #args == 0 then
+
+    -- Lua being Lua, of course #storage won't work
+    local count = 0
+    for _ in pairs(storage) do
+        count = count + 1
+    end
+
+    print("Syncing " .. count .. " files.")
+
+    local success_count = 0
+    for local_path, repo_path in pairs(storage) do
+        local success = download_file(repo_path, local_path)
+        if success then
+            success_count = success_count + 1
+        end
+    end
+
+    print("Done. " .. success_count .. " out of " .. count .. " files synced.")
+
+elseif args[1] == "sync" then
+    local usage = "gitgud sync <repo path> <local path>"
+    local repo_path = args[2] or error(usage)
+    local local_path = args[3] or error(usage)
+
+    repo_path = ensure_dotlua(repo_path)
+    local_path = ensure_dotlua(local_path)
+
+    storage[local_path] = repo_path
+    update_storage()
+
+    download_file(repo_path, local_path)
+
+elseif args[1] == "delete" then
+    local usage = "gitgud delete <local path>"
+    local local_path = args[2] or error(usage)
+
+    local_path = ensure_dotlua(local_path)
+
+    storage[local_path] = nil
+    update_storage()
+
+    fs.delete(local_path)
+
+elseif args[1] == "run" then
+    local usage = "gitgud run <repo path> [args...]"
+    local repo_path = args[2] or error(usage)
+
+    repo_path = ensure_dotlua(repo_path)
+
+    write("Downloading " .. repo_path .. "... ")
+    local result, err = get(gitea_url(repo_path))
+    if not result then
+        print()
+        printError(err)
+    else
+        print("OK")
+    end
+
+    local func, err = load(result, repo_path, "t", _ENV)
+    if not func then
+        printError(err)
+        return
+    end
+    local success, err = pcall(func, select(3, ...))
+    if not success then
+        printError(err)
+    end
+
+else
+    print("Unknown command " .. args[1])
+    print("Try \"sync\", \"delete\" or \"run\"")
+
+end
\ No newline at end of file
diff --git a/kai/lib.lua b/kai/lib.lua
new file mode 100644
index 0000000..42e3ca4
--- /dev/null
+++ b/kai/lib.lua
@@ -0,0 +1,92 @@
+-- Do not lose state when reset (chunkloading etc)
+state = (function ()
+    local path = ".state"
+    local state_table = {}
+    
+    if fs.exists(path) then
+        local f = fs.open(path, "r")
+        state_table = textutils.unserialize(f.readAll())
+        f.close()
+    end
+    
+    return setmetatable({}, {
+        __index = state_table,
+
+        __newindex = function(self, k, v)
+            rawset(state_table, k, v)
+            local f = fs.open(path, "w")
+            f.write(textutils.serialize(state_table))
+            f.close()
+        end,
+    })
+end)()
+
+if state.x == nil or state.y == nil or state.z == nil or state.o == nil then
+    printError("[lib] position is not set")
+    printError("[lib] defaulting to 0, 0, 0, +z")
+    state.x = 0
+    state.y = 0
+    state.z = 0
+    state.o = 0
+end
+
+--[[
+    orientation:
+    0 = South (+z)
+    1 = West  (-x)
+    2 = North (-z)
+    3 = East  (+x)
+]]
+
+function getOrientation()
+    return ({"+z", "-x", "-z", "+x"})[1 + state.o]
+end
+
+function move(raw_move, position_update)
+    return function()
+        success, err = raw_move()
+        if not success then
+            return false, err
+        end
+        position_update()
+        return true
+    end
+end
+
+return {
+    state = state,
+
+    getOrientation = getOrientation,
+
+    fwd = move(turtle.forward, function()
+        if state.o == 1 or state.o == 3 then
+            state.x = state.x + ((state.o == 1) and -1 or 1)
+        elseif state.o == 0 or state.o == 2 then
+            state.z = state.z + ((state.o == 2) and -1 or 1)
+        end
+    end),
+
+    back = move(turtle.back, function()
+        if state.o == 1 or state.o == 3 then
+            state.x = state.x + ((state.o == 1 and 1 or -1))
+        elseif state.o == 0 or state.o == 2 then
+            state.z = state.z + ((state.o == 2) and 1 or -1)
+        end
+    end),
+
+    up = move(turtle.up, function()
+        state.y = state.y + 1
+    end),
+
+    down = move(turtle.down, function()
+        state.y = state.y - 1
+    end),
+
+    left = move(turtle.turnLeft, function()
+        state.o = (state.o - 1) % 4
+    end),
+
+    right = move(turtle.turnRight, function()
+        state.o = (state.o + 1) % 4
+    end),
+}
\ No newline at end of file