-- CYOA Campaign Guides by Antimarkovnikov, scripted by Chr1Z
-- Utility memory bag by Directsun
-- Version 2.7.0
-- Fork of Memory Bag 2.0 by MrStump

CONFIG = {
    MEMORY_GROUP = {
        -- This determines how many frames to wait before actually placing objects onto the table when the "Place" button is clicked.
        -- This gives the other bags time to recall their objects.
        -- The delay ONLY occurs if other bags have objects out.
        FRAME_DELAY_BEFORE_PLACING_OBJECTS = 30,
    },
}

--[[ Memory Bag Groups ]] -------------------------------------------------------
--[[
Utility Memory Bags may be added to a named group, called a "memory group".
You can add a bag to a group through the bag's UI: "Setup" > "Group Name" (to the left of the bag).
Only one bag from a group may have it's contents placed on the table at a time.
When "Place" is clicked on a bag, the other bags in it's memory group are recalled.
By default a memory bag is not in any group. It's memory group is "nil".
--]]

memoryGroupName = { memoryBag = self }
function memoryGroupName:get()
    return self._name
end

function memoryGroupName:set(newName)
    GlobalMemoryGroups:unregisterBagInGroup(self:get(), self.memoryBag.getGUID())
    GlobalMemoryGroups:registerBagInGroup(newName, self.memoryBag.getGUID())

    if newName == "" then
        self._name = nil
    else
        self._name = newName
    end
end

-- Click the "Recall" button on all other bags in my memory group.
function recallOtherBagsInMyGroup()
    for _, bag in ipairs(getOtherBagsInMyGroup()) do
        bag.call('buttonClick_recall')
    end
end

-- Return "true" if another bag in my memory group has any objects out on the table.
function anyOtherBagsInMyGroupArePlaced()
    for _, bag in ipairs(getOtherBagsInMyGroup()) do
        local state = bag.call('areAnyOfMyObjectsPlaced')
        if state then return true end
    end

    return false
end

-- Return "true" if at least one object from this memory bag is out on the table.
function areAnyOfMyObjectsPlaced()
    for guid, _ in pairs(memoryList) do
        local obj = getObjectFromGUID(guid)
        if obj ~= nil then
            return true
        end
    end
    return false
end

function getOtherBagsInMyGroup()
    local bags = {}
    for bagGuid, _ in pairs(GlobalMemoryGroups:getGroup(memoryGroupName:get())) do
        if bagGuid ~= self.getGUID() then
            bag = getObjectFromGUID(bagGuid)
            -- "bag" is nill if it has been deleted since the last time onLoad() was called.
            if bag ~= nil then
                table.insert(bags, bag)
            end
        end
    end
    return bags
end

--[[
This object provides access to a variable stored on the "Global script".
The variable holds the names & guids of all memory bag groups.
The global variable is a table and holds data like this:
{
    'My First Group Name' = {
        '805ebd' = {},
        '35cc21' = {},
        'fc8886' = {},
    },
    'My Second Group Name' = {
        'f50264' = {},
        '5f5f63' = {},
    },
}
--]]
GlobalMemoryGroups = {
    NAME_OF_GLOBAL_VARIABLE = '_GlobalUtilityMemoryBagGroups',
}

-- Call me inside this script's "onLoad()" method!
function GlobalMemoryGroups:onLoad(myGuid)
    -- Create and initialize the global variable if it doesn't already exist:
    if self:_getGroups() == nil then
        self:_setGroups({})
    end
end

-- Return the GUIDs of all bags in the "groupName". The return value is a dictionary that maps [GUID -> empty table].
function GlobalMemoryGroups:getGroup(groupName)
    guids = self:_getGroups()[groupName] or {}
    return guids
end

-- Registers a bag in a memory group. Creates a new group if one doesn't exist.
function GlobalMemoryGroups:registerBagInGroup(groupName, bagGuid)
    if groupName == nil or groupName == "" then
        return
    end

    self:_tryCreateNewGroup(groupName)
    local groups = self:_getGroups()
    groups[groupName][bagGuid] = {}
    self:_setGroups(groups)
end

-- Removes this bag from the memory group.
function GlobalMemoryGroups:unregisterBagInGroup(groupName, bagGuid)
    local groups = self:_getGroups()
    local group = groups[groupName]
    if group ~= nil then
        group[bagGuid] = nil
        self:_setGroups(groups)
    end
end

-- Return the global variable, which is a table holding all memory group names & guids.
function GlobalMemoryGroups:_getGroups()
    return Global.getTable(self.NAME_OF_GLOBAL_VARIABLE)
end

-- Override the global variable (i.e. the entire table).
function GlobalMemoryGroups:_setGroups(newTable)
    Global.setTable(self.NAME_OF_GLOBAL_VARIABLE, newTable)
end

-- Add a new memory group named "groupName" to the global variable, if one doesn't already exist.
function GlobalMemoryGroups:_tryCreateNewGroup(groupName)
    local groups = self:_getGroups()
    if groups[groupName] == nil then
        groups[groupName] = {}
        self:_setGroups(groups)
    end
end

-- This object controls the "Group Name" input text field that is part of the bag's ingame UI.
groupNameInput = {
    greyedOutText = "Group Name",
    widthPerCharacter = 100,
    padding = 4,
    memoryBag = self,
}
function groupNameInput:create(optionalStartingValue)
    local effectiveText = optionalStartingValue or self.greyedOutText
    local width = self:computeWidth(effectiveText)

    self.memoryBag.createInput({
        label = self.greyedOutText,
        value = optionalStartingValue or nil,
        alignment = 3, -- Center aligned
        input_function = "groupNameInput_onCharacterTyped", function_owner = self.memoryBag,
        position = { 2.1, 0.3, 0 }, rotation = { 0, 270, 0 }, width = width, height = 350,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 },
    })
end

function groupNameInput:computeWidth(text)
    return (string.len(text) + self.padding) * self.widthPerCharacter
end

function groupNameInput:updatedWidth(text)
    self.memoryBag.editInput({
        index = 0,
        width = self:computeWidth(text)
    })
end

function groupNameInput:onCharacterTyped(text, stillEditing)
    if stillEditing then
        self:updatedWidth(text)
    else
        if text == "" then
            self:updatedWidth(self.greyedOutText)
        end
    end
end

function groupNameInput_onCharacterTyped(memoryBag, playerColor, text, stillEditing)
    groupNameInput:onCharacterTyped(text, stillEditing)
end

function groupNameInput:setGroupNameToInputField()
    local inputFields = self.memoryBag.getInputs()
    if inputFields ~= nil then
        -- Get input field 0, which corresponds to the groupNameInput.
        -- Unfortunately "self.getInputs()" doesn't return the inputs in a guaranteed order.
        local nameField = nil
        for _, field in ipairs(inputFields) do
            if field.index == 0 then
                nameField = field
            end
        end

        memoryGroupName:set(nameField.value)
    end
end

--//////////////////////////////////////////////////////////////////////////////


function updateSave()
    local data_to_save = { ["ml"] = memoryList, ["groupName"] = memoryGroupName:get() }
    saved_data = JSON.encode(data_to_save)
    self.script_state = saved_data
end

function combineMemoryFromBagsWithin()
    local bagObjList = self.getObjects()
    for _, bagObj in ipairs(bagObjList) do
        local data = bagObj.lua_script_state
        if data ~= nil then
            local j = JSON.decode(data)
            if j ~= nil and j.ml ~= nil then
                for guid, entry in pairs(j.ml) do
                    memoryList[guid] = entry
                end
            end
        end
    end
end

function updateMemoryWithMoves()
    memoryList = memoryListBackup
    --get the first transposed object's coordinates
    local obj = getObjectFromGUID(moveGuid or "")

    -- p1 is where needs to go, p2 is where it was
    local refObjPos = memoryList[moveGuid].pos
    local deltaPos = findOffsetDistance(obj.getPosition(), refObjPos, nil)
    for guid, entry in pairs(memoryList) do
        memoryList[guid].pos.x = entry.pos.x - deltaPos.x
        memoryList[guid].pos.y = entry.pos.y - deltaPos.y
        memoryList[guid].pos.z = entry.pos.z - deltaPos.z
    end

    moveList = {}
end

function onload(saved_data)
    GlobalMemoryGroups:onLoad(self.getGUID())
    AllMemoryBagsInScene:add(self.getGUID())

    fresh = true
    if saved_data ~= "" then
        local loaded_data = JSON.decode(saved_data)
        --Set up information off of loaded_data
        memoryList = loaded_data.ml
        memoryGroupName:set(loaded_data.groupName)
    else
        --Set up information for if there is no saved saved data
        memoryList = {}
        memoryGroupName:set(nil)
    end

    moveList = {}
    moveGuid = nil

    if next(memoryList) == nil then
        createSetupButton()
    else
        fresh = false
        createMemoryActionButtons()
    end
end

--Beginning Setup


--Make setup button
function createSetupButton()
    self.createButton({
        label = "Setup", click_function = "buttonClick_setup", function_owner = self,
        position = { 0, 0.3, 4.5 }, rotation = { 0, 0, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })
end

--Triggered by Transpose button
function buttonClick_transpose()
    moveGuid = nil
    broadcastToAll("Select one object and move it- all objects will move relative to the new location", { 0.75, 0.75, 1 })
    memoryListBackup = duplicateTable(memoryList)
    memoryList = {}
    moveList = {}
    self.clearButtons()
    self.clearInputs()
    createButtonsOnAllObjects(true)
    createSetupActionButtons(true)
end

--Triggered by setup button,
function buttonClick_setup()
    memoryListBackup = duplicateTable(memoryList)
    memoryList = {}
    self.clearButtons()
    self.clearInputs()
    createButtonsOnAllObjects(false)
    createSetupActionButtons(false)
end

function getAllObjectsInMemory()
    local objTable = {}
    local curObj = {}

    for guid in pairs(memoryListBackup) do
        curObj = getObjectFromGUID(guid)
        table.insert(objTable, curObj)
    end

    return objTable
    -- return getAllObjects()
end

--Creates selection buttons on objects
function createButtonsOnAllObjects(move)
    buttonIndexMap = {}
    local howManyButtons = 0

    local objsToHaveButtons = {}
    if move == true then
        objsToHaveButtons = getAllObjectsInMemory()
    else
        objsToHaveButtons = getAllObjects()
    end

    for _, obj in ipairs(objsToHaveButtons) do
        if obj ~= self then
            --On a normal bag, the button positions aren't the same size as the bag.
            globalScaleFactor = 1 / self.getScale().x
            --Super sweet math to set button positions
            local selfPos = self.getPosition()
            local objPos = obj.getPosition()
            local deltaPos = findOffsetDistance(selfPos, objPos, obj)
            local objPos = rotateLocalCoordinates(deltaPos, self)
            objPos.x = -objPos.x * globalScaleFactor
            objPos.y = objPos.y * globalScaleFactor
            objPos.z = objPos.z * globalScaleFactor
            --Workaround for custom PDFs
            if obj.Book then
                objPos.y = objPos.y + 0.5
            end
            --Offset rotation of bag
            local rot = self.getRotation()
            rot.y = -rot.y + 180
            --Create function
            local funcName = "selectButton_" .. howManyButtons
            local func = function() buttonClick_selection(obj, move) end
            local color = { 0.75, 0.25, 0.25, 0.6 }
            local colorMove = { 0, 0, 1, 0.6 }
            if move == true then
                color = colorMove
            end
            self.setVar(funcName, func)
            self.createButton({
                click_function = funcName, function_owner = self,
                position = objPos, rotation = rot, height = 1000, width = 1000,
                color = color,
            })
            buttonIndexMap[obj.getGUID()] = howManyButtons
            howManyButtons = howManyButtons + 1
        end
    end
end

--Creates submit and cancel buttons
function createSetupActionButtons(move)
    self.createButton({
        label = "Cancel", click_function = "buttonClick_cancel", function_owner = self,
        position = { 0, 0.3, 4.5 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })

    self.createButton({
        label = "Submit", click_function = "buttonClick_submit", function_owner = self,
        position = { 0, 0.3, 5.3 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })

    if move == false then
        self.createButton({
            label = "Add", click_function = "buttonClick_add", function_owner = self,
            position = { 0, 0.3, 6.1 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
            font_size = 250, color = { 0, 0, 0 }, font_color = { 0.25, 1, 0.25 }
        })

        self.createButton({
            label = "Selection", click_function = "editDragSelection", function_owner = self,
            position = { 0, 0.3, -4.5 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
            font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
        })
        groupNameInput:create(memoryGroupName:get())

        if fresh == false then
            self.createButton({
                label = "Set New", click_function = "buttonClick_setNew", function_owner = self,
                position = { 0, 0.3, 6.9 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
                font_size = 250, color = { 0, 0, 0 }, font_color = { 0.75, 0.75, 1 }
            })
            self.createButton({
                label = "Remove", click_function = "buttonClick_remove", function_owner = self,
                position = { 0, 0.3, 7.7 }, rotation = { 0, 0, 0 }, height = 350, width = 1100,
                font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 0.25, 0.25 }
            })
        end
    end

    self.createButton({
        label = "Reset", click_function = "buttonClick_reset", function_owner = self,
        position = { 3, 0.3, 0 }, rotation = { 0, 90, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })
end

--During Setup


--Checks or unchecks buttons
function buttonClick_selection(obj, move)
    local index = buttonIndexMap[obj.getGUID()]
    local colorMove = { 0, 0, 1, 0.6 }
    local color = { 0, 1, 0, 0.6 }

    previousGuid = selectedGuid
    selectedGuid = obj.getGUID()

    theList = memoryList
    if move == true then
        theList = moveList
        if previousGuid ~= nil and previousGuid ~= selectedGuid then
            local prevObj = getObjectFromGUID(previousGuid)
            prevObj.highlightOff()
            self.editButton({ index = previousIndex, color = colorMove })
            theList[previousGuid] = nil
        end
        previousIndex = index
    end

    if theList[selectedGuid] == nil then
        self.editButton({ index = index, color = color })
        --Adding pos/rot to memory table
        local pos, rot = obj.getPosition(), obj.getRotation()
        --I need to add it like this or it won't save due to indexing issue
        theList[obj.getGUID()] = {
            pos = { x = round(pos.x, 4), y = round(pos.y, 4), z = round(pos.z, 4) },
            rot = { x = round(rot.x, 4), y = round(rot.y, 4), z = round(rot.z, 4) },
            lock = obj.getLock(),
            tint = obj.getColorTint()
        }
        obj.highlightOn({ 0, 1, 0 })
    else
        color = { 0.75, 0.25, 0.25, 0.6 }
        if move == true then
            color = colorMove
        end
        self.editButton({ index = index, color = color })
        theList[obj.getGUID()] = nil
        obj.highlightOff()
    end
end

function editDragSelection(bagObj, player, remove)
    local selectedObjs = Player[player].getSelectedObjects()
    if not remove then
        for _, obj in ipairs(selectedObjs) do
            local index = buttonIndexMap[obj.getGUID()]
            --Ignore if already in the memory list, or does not have a button
            if index and not memoryList[obj.getGUID()] then
                self.editButton({ index = index, color = { 0, 1, 0, 0.6 } })
                --Adding pos/rot to memory table
                local pos, rot = obj.getPosition(), obj.getRotation()
                --I need to add it like this or it won't save due to indexing issue
                memoryList[obj.getGUID()] = {
                    pos = { x = round(pos.x, 4), y = round(pos.y, 4), z = round(pos.z, 4) },
                    rot = { x = round(rot.x, 4), y = round(rot.y, 4), z = round(rot.z, 4) },
                    lock = obj.getLock(),
                    tint = obj.getColorTint()
                }
                obj.highlightOn({ 0, 1, 0 })
            end
        end
    else
        for _, obj in ipairs(selectedObjs) do
            local index = buttonIndexMap[obj.getGUID()]
            if index and memoryList[obj.getGUID()] then
                color = { 0.75, 0.25, 0.25, 0.6 }
                self.editButton({ index = index, color = color })
                memoryList[obj.getGUID()] = nil
                obj.highlightOff()
            end
        end
    end
end

--Cancels selection process
function buttonClick_cancel()
    memoryList = memoryListBackup
    moveList = {}
    self.clearButtons()
    self.clearInputs()
    if next(memoryList) == nil then
        createSetupButton()
    else
        createMemoryActionButtons()
    end
    removeAllHighlights()
    broadcastToAll("Selection Canceled", { 1, 1, 1 })
    moveGuid = nil
end

--Saves selections
function buttonClick_submit()
    fresh = false
    if next(moveList) ~= nil then
        for guid in pairs(moveList) do
            moveGuid = guid
        end
        if memoryListBackup[moveGuid] == nil then
            broadcastToAll("Item selected for moving is not already in memory", { 1, 0.25, 0.25 })
        else
            broadcastToAll("Moving all items in memory relative to new objects position!", { 0.75, 0.75, 1 })
            self.clearButtons()
            self.clearInputs()
            createMemoryActionButtons()
            local count = 0
            for guid in pairs(moveList) do
                moveGuid = guid
                count = count + 1
                local obj = getObjectFromGUID(guid)
                if obj ~= nil then obj.highlightOff() end
            end
            updateMemoryWithMoves()
            updateSave()
            buttonClick_place()
        end
    elseif next(memoryList) == nil and moveGuid == nil then
        memoryList = memoryListBackup
        broadcastToAll("No selections made.", { 0.75, 0.25, 0.25 })
    end
    combineMemoryFromBagsWithin()
    groupNameInput:setGroupNameToInputField()
    self.clearButtons()
    self.clearInputs()
    createMemoryActionButtons()
    local count = 0
    for guid in pairs(memoryList) do
        count = count + 1
        local obj = getObjectFromGUID(guid)
        if obj ~= nil then obj.highlightOff() end
    end
    broadcastToAll(count .. " Objects Saved", { 1, 1, 1 })
    updateSave()
    moveGuid = nil
end

function combineTables(first_table, second_table)
    for k, v in pairs(second_table) do first_table[k] = v end
end

function buttonClick_add()
    fresh = false
    combineTables(memoryList, memoryListBackup)
    broadcastToAll("Adding internal bags and selections to existing memory", { 0.25, 0.75, 0.25 })
    combineMemoryFromBagsWithin()
    self.clearButtons()
    self.clearInputs()
    createMemoryActionButtons()
    local count = 0
    for guid in pairs(memoryList) do
        count = count + 1
        local obj = getObjectFromGUID(guid)
        if obj ~= nil then obj.highlightOff() end
    end
    broadcastToAll(count .. " Objects Saved", { 1, 1, 1 })
    updateSave()
end

function buttonClick_remove()
    broadcastToAll("Removing Selected Entries From Memory", { 1.0, 0.25, 0.25 })
    self.clearButtons()
    self.clearInputs()
    createMemoryActionButtons()
    local count = 0
    for guid in pairs(memoryList) do
        count = count + 1
        memoryListBackup[guid] = nil
        local obj = getObjectFromGUID(guid)
        if obj ~= nil then obj.highlightOff() end
    end
    broadcastToAll(count .. " Objects Removed", { 1, 1, 1 })
    memoryList = memoryListBackup
    updateSave()
end

function buttonClick_setNew()
    broadcastToAll("Setting new position relative to items in memory", { 0.75, 0.75, 1 })
    self.clearButtons()
    self.clearInputs()
    createMemoryActionButtons()
    local count = 0
    for _, obj in ipairs(getAllObjects()) do
        guid = obj.guid
        if memoryListBackup[guid] ~= nil then
            count = count + 1
            memoryListBackup[guid].pos = obj.getPosition()
            memoryListBackup[guid].rot = obj.getRotation()
            memoryListBackup[guid].lock = obj.getLock()
            memoryListBackup[guid].tint = obj.getColorTint()
        end
    end
    broadcastToAll(count .. " Objects Saved", { 1, 1, 1 })
    memoryList = memoryListBackup
    updateSave()
end

--Resets bag to starting status
function buttonClick_reset()
    fresh = true
    memoryList = {}
    memoryGroupName:set(nil)
    self.clearButtons()
    self.clearInputs()
    createSetupButton()
    removeAllHighlights()
    broadcastToAll("Tool Reset", { 1, 1, 1 })
    updateSave()
end

--After Setup


--Creates recall and place buttons
function createMemoryActionButtons()
    self.createButton({
        label = "Place", click_function = "buttonClick_place", function_owner = self,
        position = { 0, 0.3, 4.5 }, rotation = { 0, 0, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })
    self.createButton({
        label = "Recall", click_function = "buttonClick_recall", function_owner = self,
        position = { 0, 0.3, 5.3 }, rotation = { 0, 0, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })
    self.createButton({
        label = "Setup", click_function = "buttonClick_setup", function_owner = self,
        position = { 3, 0.3, 0 }, rotation = { 0, 90, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 1, 1, 1 }
    })
    self.createButton({
        label = "Move", click_function = "buttonClick_transpose", function_owner = self,
        position = { 3.8, 0.3, 0 }, rotation = { 0, 90, 0 }, height = 350, width = 800,
        font_size = 250, color = { 0, 0, 0 }, font_color = { 0.75, 0.75, 1 }
    })
end

--Sends objects from bag/table to their saved position/rotation
function buttonClick_place()
    if anyOtherBagsInMyGroupArePlaced() then
        recallOtherBagsInMyGroup()
        Wait.frames(_placeObjects, CONFIG.MEMORY_GROUP.FRAME_DELAY_BEFORE_PLACING_OBJECTS)
    else
        _placeObjects()
    end
end

function _placeObjects()
    local bagObjList = self.getObjects()
    for guid, entry in pairs(memoryList) do
        local obj = getObjectFromGUID(guid)
        --If obj is out on the table, move it to the saved pos/rot
        if obj ~= nil then
            obj.setPositionSmooth(entry.pos)
            obj.setRotationSmooth(entry.rot)
            obj.setLock(entry.lock)
            obj.setColorTint(entry.tint)
        else
            --If obj is inside of the bag
            for _, bagObj in ipairs(bagObjList) do
                if bagObj.guid == guid then
                    local item = self.takeObject({
                        guid = guid, position = entry.pos, rotation = entry.rot, smooth = false
                    })
                    item.setLock(entry.lock)
                    item.setColorTint(entry.tint)
                    break
                end
            end
        end
    end
    broadcastToAll("Objects Placed", { 1, 1, 1 })
end

--Recalls objects to bag from table
function buttonClick_recall()
    for guid, entry in pairs(memoryList) do
        local obj = getObjectFromGUID(guid)
        if obj ~= nil then self.putObject(obj) end
    end
    broadcastToAll("Objects Recalled", { 1, 1, 1 })
end

--Utility functions


--Find delta (difference) between 2 x/y/z coordinates
function findOffsetDistance(p1, p2, obj)
    local yOffset = 0
    if obj ~= nil then
        local bounds = obj.getBounds()
        yOffset = (bounds.size.y - bounds.offset.y)
    end
    local deltaPos = {}
    deltaPos.x = (p2.x - p1.x)
    deltaPos.y = (p2.y - p1.y) + yOffset
    deltaPos.z = (p2.z - p1.z)
    return deltaPos
end

--Used to rotate a set of coordinates by an angle
function rotateLocalCoordinates(desiredPos, obj)
    local objPos, objRot = obj.getPosition(), obj.getRotation()
    local angle = math.rad(objRot.y)
    local x = desiredPos.x * math.cos(angle) - desiredPos.z * math.sin(angle)
    local z = desiredPos.x * math.sin(angle) + desiredPos.z * math.cos(angle)
    --return {x=objPos.x+x, y=objPos.y+desiredPos.y, z=objPos.z+z}
    return { x = x, y = desiredPos.y, z = z }
end

function rotateMyCoordinates(desiredPos, obj)
    local angle = math.rad(obj.getRotation().y)
    local x = desiredPos.x * math.sin(angle)
    local z = desiredPos.z * math.cos(angle)
    return { x = x, y = desiredPos.y, z = z }
end

--Coroutine delay, in seconds
function wait(time)
    local start = os.time()
    repeat coroutine.yield(0) until os.time() > start + time
end

--Duplicates a table (needed to prevent it making reference to the same objects)
function duplicateTable(oldTable)
    local newTable = {}
    for k, v in pairs(oldTable) do
        newTable[k] = v
    end
    return newTable
end

--Moves scripted highlight from all objects
function removeAllHighlights()
    for _, obj in ipairs(getAllObjects()) do
        obj.highlightOff()
    end
end

--Round number (num) to the Nth decimal (dec)
function round(num, dec)
    local mult = 10 ^ (dec or 0)
    return math.floor(num * mult + 0.5) / mult
end

--[[
This object provides access to a variable stored on the "Global script".
The variable holds the GUIDs for every Utility Memory Bag in the scene.
Example:
{'805ebd', '35cc21', 'fc8886', 'f50264', '5f5f63'}
--]]
AllMemoryBagsInScene = {
    NAME_OF_GLOBAL_VARIABLE = "_UtilityMemoryBag_AllMemoryBagsInScene"
}

function AllMemoryBagsInScene:add(guid)
    local guids = Global.getTable(self.NAME_OF_GLOBAL_VARIABLE) or {}
    table.insert(guids, guid)
    Global.setTable(self.NAME_OF_GLOBAL_VARIABLE, guids)
end

function AllMemoryBagsInScene:getGuidList()
    return Global.getTable(self.NAME_OF_GLOBAL_VARIABLE) or {}
end