Data Center Game — API Reference for Modding (FFI via Il2Cpp)

All types live in the Il2Cpp namespace. Assembly: Assembly-CSharp.dll.

1. `BalanceSheet` (extends `MonoBehaviour`)

Singleton financial tracker. Manages revenue, expenses, penalties per customer per month.

Static Fields

Type	Name	Notes
`BalanceSheet`	`instance`	Singleton accessor

Instance Properties / Fields

Type	Name	Notes
`List<MonthlySnapshot>`	`history`	Historical monthly financial snapshots
`Dictionary<int, CustomerRecord>`	`currentRecords`	Live records keyed by customer ID
`float`	`totalMonthlySalary`	Sum of all technician salaries
`float`	`currentSalaryExpense`	Running salary expense this period
`List<GameObject>`	`activeRows`	UI rows currently shown
`Coroutine`	`trackFinancesCoroutine`	Running finance tracking coroutine

Methods

Signature	Notes
`CustomerRecord GetOrCreateRecord(CustomerItem item)`	Get or lazily create a record for a customer
`void RegisterSalary(int monthlySalary)`	Register a technician's salary
`int CountFailingApps(CustomerBase cb)`	Count apps failing SLA for a customer base
`void SaveSnapshot(int month, DateTime snapshotTime)`	Freeze current month into history
`MonthlySnapshot GetLatestSnapshot()`	Get most recent monthly snapshot
`void FillInBalanceSheet()`	Refresh the balance sheet UI
`void AddRow(string name, float revenue, float penalties, float total, Sprite logo = null)`	Add a display row
`void AddSalaryRow(float salaryExpense)`	Add the salary expense row

Nested: `BalanceSheet.CustomerRecord`

Type	Name	Notes
`int`	`customerID`
`string`	`customerName`
`Sprite`	`customerLogo`
`float`	`revenue`	Gross revenue from this customer
`float`	`penalties`	SLA penalties incurred
`float`	`Total`	Property (getter only): `revenue - penalties`

Nested: `BalanceSheet.MonthlySnapshot`

Type	Name	Notes
`int`	`month`	Month index
`int`	`day`	Day within month
`List<CustomerRecord>`	`records`	Per-customer breakdown
`float`	`salaryExpense`	Technician salaries this month
`float`	`TotalRevenue`	Property (getter): sum of all customer revenues
`float`	`TotalPenalties`	Property (getter): sum of all penalties
`float`	`GrandTotal`	Property (getter): `TotalRevenue - TotalPenalties - salaryExpense`

2. `Technician` (extends `MonoBehaviour`)

Represents a single technician NPC that can repair broken servers/switches.

Enum: `Technician.TechnicianState`

Value	Meaning
`Idle`	Standing around
`GoingForNewServer`	Walking to pick up a new server
`BringingNewServer`	Carrying a new server to the rack
`GoingBackWithOldServer`	Carrying a broken server to dumpster
`EndingHisWork`	Finishing up

Instance Properties / Fields

Type	Name	Notes
`int`	`technicianID`	Unique ID
`string`	`technicianName`	Display name
`int`	`salary`	Monthly salary cost
`TechnicianState`	`currentState`	Current state machine state
`bool`	`isBusy`	Whether actively on a job
`Server`	`server`	Server currently being worked on
`Transform`	`transformIdle`	Idle position
`Transform`	`transformContainer`	Container/storage position
`Transform`	`transformDumpster`	Dumpster position
`Transform`	`transformInHandPosition`	Position for item in hand
`Transform`	`transformDeviceSpawnPosition`	Where new devices appear
`Transform`	`positionOfDeviceToBeReplaced`	Target rack slot
`TwoBoneIKConstraint`	`leftHandIK` / `rightHandIK`	IK constraints for animation
`Transform`	`leftHandTarget` / `rightHandTarget`	IK hand targets

Methods

Signature	Notes
`void AssignJob(TechnicianManager.RepairJob job)`	Assign a repair job to this technician
`void RepairDevice()`	Execute the repair action
`void RotateTowardsGoal(Vector3 goal)`	Rotate to face a position
`void PositionHandTargetsOnDevice(GameObject device)`	Position IK targets on a device

3. `TechnicianManager` (extends `MonoBehaviour`)

Singleton that manages the pool of technicians and dispatch queue.

Static Fields

Type	Name	Notes
`TechnicianManager`	`instance`	Singleton accessor
`float`	`DISPATCH_INTERVAL`	Seconds between dispatch ticks

Instance Properties / Fields

Type	Name	Notes
`Transform`	`transformContainer`	Shared container position
`Transform`	`transformDumpster`	Shared dumpster position
`Transform`	`transformDeviceSpawnPosition`	Shared spawn position
`int`	`lastAssignedIndex`	Round-robin index
`float`	`lastDispatchTime`	Timestamp of last dispatch
`Coroutine`	`dispatchCoroutine`	Running dispatch coroutine
`int`	`QueuedJobCount`	Property: number of jobs waiting

Methods

Signature	Notes
`void AddTechnician(Technician technician)`	Register a new technician
`void SendTechnician(NetworkSwitch nswitch, Server server)`	Dispatch a tech to repair a device
`void RequestNextJob(Technician technician)`	Technician requests another job
`void EnqueueDispatch(RepairJob job)`	Add a job to the queue
`bool IsDeviceAlreadyAssigned(NetworkSwitch ns, Server s)`	Check if a device has a tech en route
`void RestoreJobQueue(List<RepairJobSaveData> savedJobs)`	Restore jobs from save
`void FireTechnician(int technicianID)`	Remove a technician

Nested: `TechnicianManager.RepairJob`

Type	Name	Notes
`Technician`	`assignedTechnician`
`string`	`DeviceName`

4. `MainGameManager` (extends `MonoBehaviour`)

Central singleton — game state, customer management, prefabs, UI canvases.

Static Fields

Type	Name	Notes
`MainGameManager`	`instance`	Singleton accessor
`PlayerManager.OnBuyingWall`	`onBuyingWallEvent`	Event fired when a wall is purchased

Instance Properties / Fields — Game State

Type	Name	Notes
`int`	`difficulty`	Game difficulty level
`bool`	`isGamePaused`	Is the game currently paused
`bool`	`isPauseMenuDisallowed`	Pause menu locked out
`bool`	`isPlayerCameraDisallowed`	Camera control locked
`bool`	`isAllowedToSave`	Can save right now
`bool`	`loadingFirstTime`	True during initial load
`string`	`languageXMLPath`	Path to localization XML
`bool`	`isIPHintHidden`	Whether IP hints are hidden
`float`	`xpGainMultiplier`	XP multiplier
`float`	`wallPrice`	Current wall purchase price
`float`	`autoSaveIntervalMinutes`	Auto-save interval
`bool`	`autoSaveEnabled`	Auto-save toggle

Instance Properties / Fields — Customer Data

Type	Name	Notes
`Il2CppReferenceArray<CustomerCard>`	`customerCards`	UI cards for customer choice
`Il2CppReferenceArray<CustomerItem>`	`customerItems`	All possible customers
`Il2CppReferenceArray<CustomerBase>`	`customerBases`	Active customer base instances
`Il2CppReferenceArray<CustomerItem>`	`chosenCustomerItems`	Currently chosen customers
`List<int>`	`availableCustomerIndices`	Indices of available customers
`List<string>`	`availableSubnets`	Free subnets for assignment
`List<int>`	`existingCustomerIDs`	IDs of active customers
`List<Vector3>`	`assignedAppsLogos`	Logo positions
`Il2CppReferenceArray<Sprite>`	`appTypesLogos`	Sprite array for app type icons

Instance Properties / Fields — Prefabs / Scene References

Type	Name	Notes
`Il2CppReferenceArray<GameObject>`	`serverPrefabs`	Server prefabs by type
`Il2CppReferenceArray<GameObject>`	`switchesPrefabs`	Switch prefabs
`Il2CppReferenceArray<GameObject>`	`patchPanelsPrefabs`	Patch panel prefabs
`GameObject`	`rackPackedPrefab`	Packed rack prefab
`GameObject`	`rackPrefab`	Standard rack prefab
`GameObject`	`rackMounts`	Rack mount points
`Il2CppReferenceArray<GameObject>`	`cableSpinnerPrefab`	Cable spinner prefabs
`Il2CppReferenceArray<GameObject>`	`sfpPrefabs`	SFP module prefabs
`Il2CppReferenceArray<GameObject>`	`sfpsBoxedPrefab`	Boxed SFP prefabs
`GameObject`	`emptySfpBox`	Empty SFP box
`GameObject`	`walls`	Walls parent object
`GameObject`	`particleSystemBrokenDevice`	Broken-device particle effect
`Transform`	`parentUsableObjects`	Parent for all usable objects
`Transform`	`placeToRespawnLostUsableObjects`	Lost-and-found respawn point
`int`	`lastUsedRackPositionGlobalUID`	UID counter for rack positions
`Il2CppReferenceArray<GameObject>`	`techniciansPrefabs`	Technician prefabs
`GameObject`	`prefabPushTrolleySupporterPack`	Trolley prefab
`Transform`	`defaultTrolleyPosition`	Default trolley position

Methods — Customer / Subnet Management

Signature	Notes
`CustomerItem GetCustomerItemByID(int customerID)`	Look up a customer by ID
`void ShuffleAvailableCustomers()`	Randomize customer selection
`void ShuffleAvailableSubnets()`	Randomize subnet pool
`string GetFreeSubnet(float appRequirements)`	Get a suitable free subnet
`bool IsSubnetValid(string subnet)`	Validate a subnet string
`void RemoveUsedSubnet(string subnet)`	Mark a subnet as used
`void ReturnSubnet(string subnet)`	Return a subnet to the free pool
`float GetCustomerTotalRequirement(CustomerItem customer)`	Get total speed requirement
`bool IsCustomerSuitableForBase(CustomerItem customer, int customerBaseID)`	Check compatibility

Methods — UI / Canvas

Signature	Notes
`void ShowCustomerCardsCanvas(CustomerBaseDoor door)`	Open customer choice UI
`void ButtonCustomerChosen(int cardID)`	Simulate choosing a customer card
`void ButtonCancelCustomerChoice()`	Cancel customer choice
`void ShowBuyWallCanvas(Wall wall)`	Open wall purchase UI
`void ButtonBuyWall()`	Confirm wall purchase
`void ButtonCancelBuyWall()`	Cancel wall purchase
`void ShowNetworkConfigCanvas(NetworkSwitch ns)`	Open switch config UI
`void CloseNetworkConfigCanvas()`	Close switch config UI
`void OpenAnyCanvas()`	Generic canvas open handler
`void CloseAnyCanvas(bool isCustomerChoice = false)`	Generic canvas close handler

Methods — Save / Load / Misc

Signature	Notes
`void OnLoad()`	Called after loading a save
`IEnumerator AutoSaveCoroutine()`	Auto-save coroutine
`void SetAutoSaveInterval(float minutes)`	Change auto-save interval
`void SetAutoSaveEnabled(bool enabled)`	Enable/disable auto-save
`void RestartAutoSave()`	Restart the auto-save coroutine
`void ResetTrolleyPosition()`	Reset the trolley to default position
`void LoadTrolleyPosition(Vector3 pos, Quaternion rot)`	Set trolley transform
`string ReturnServerNameFromType(int type)`	Map server type int → display name
`string ReturnSwitchNameFromType(int type)`	Map switch type int → display name

5. `PlayerManager` (extends `MonoBehaviour`)

Singleton player controller — movement, interaction, object-in-hand state.

Enum: `PlayerManager.ObjectInHand`

Value
`None`
`Server1U` / `Server2U` / `Server3U`
`Switch`
`Rack`
`CableSpinner`
`PatchPanel`
`SFPModule` / `SFPBox`

Delegate: `PlayerManager.OnBuyingWall`

Multicast delegate (no parameters, void return). Fired on wall purchase.

Static Fields

Type	Name	Notes
`PlayerManager`	`instance`	Singleton accessor

Instance Properties / Fields

Type	Name	Notes
`FirstPersonController`	`fpc`	FPS controller reference
`GameObject`	`playerGO`	Player game object
`bool`	`enabledMouseMovement`	Mouse look enabled
`bool`	`enabledPlayerMovement`	WASD movement enabled
`CinemachineCamera`	`vcam`	Virtual camera
`Image`	`imageWaitForAction`	Action progress image
`Transform`	`moveItemPosition`	Position in front of player
`bool`	`enabledRayLookInteract`	Raycast interaction enabled
`bool`	`isGamePaused`	Local pause flag
`bool`	`playerIsSitting`	Player is seated
`ObjectInHand`	`objectInHand`	What the player is carrying
`GameObject`	`objectInHandPositionGO`	The carried object
`int`	`numberOfObjectsInHand`	Count (for stacks like SFP boxes)
`GameObject`	`defaultActionDustParticle`	Dust effect for actions

Methods

Signature	Notes
`void ConfinedCursorforUI()`	Switch cursor to confined mode (for UI)
`void PlayerStopMovement()`	Freeze player movement
`void LockedCursorForPlayerMovement()`	Lock cursor for FPS movement
`void GainIOPSEffect()`	Play the XP/IOPS gain particle effect

6. `NetworkMap` (extends `MonoBehaviour`)

Network topology graph — tracks devices, connections, LACP groups, cable routing.

Instance Properties / Fields — Dictionaries (the core data)

Type	Name	Notes
`Dictionary<string, Device>`	`devices`	All registered devices by name
`Dictionary<int, CustomerBase>`	`customerBases`	Customer bases by ID
`Dictionary<string, Server>`	`servers`	Servers by name/ID
`Dictionary<string, NetworkSwitch>`	`switches`	Switches by name/ID
`Dictionary<string, Server>`	`brokenServers`	Broken servers
`Dictionary<string, NetworkSwitch>`	`brokenSwitches`	Broken switches
`Dictionary<int, LACPGroup>`	`lacpGroups`	LACP groups by ID
`int`	`nextLACPGroupId`	Next LACP group ID to assign
`Dictionary<string, HashSet<string>>`	`switchConnections`	Switch-to-device connections
`Dictionary<int, ValueTuple<string,string>>`	`cableConnections`	Cable ID → (endpoint A, endpoint B)
`Dictionary<string, List<string>>`	`adjacencyList`	Graph adjacency list

Methods — Device Management

Signature	Notes
`void ClearMap()`	Wipe the entire network map
`void RegisterCustomerBase(CustomerBase cb)`	Register a customer base
`void RegisterServer(Server server)`	Register a server
`void RegisterSwitch(NetworkSwitch ns)`	Register a switch
`void AddDevice(string name, TypeOfLink type, int customerID = -1)`	Add a generic device
`void RemoveDevice(string name)`	Remove a device
`Device GetDevice(string name)`	Look up a device by name
`List<Device> GetAllDevices()`	Get all devices
`string GenerateDeviceName(TypeOfLink type, Vector3 pos)`	Auto-generate a device name

Methods — Connections / Routing

Signature	Notes
`void Connect(string from, string to)`	Create a connection
`void Disconnect(string from, string to)`	Remove a connection
`List<List<string>> FindAllRoutes(string baseName, string serverName)`	Find all routes between a base and server
`List<List<string>> FindPhysicalPath(string start, string target)`	Find physical cable paths
`void RegisterCableConnection(int cableId, ...)`	Register a physical cable (many params)
`void AddSwitchConnection(string switchName, string deviceName)`	Add a switch↔device link
`void RemoveCableConnection(int cableId)`	Remove a cable connection
`void RemoveIsolatedDevices()`	Clean up unconnected devices
`string PrintNetworkMap()`	Debug dump of the entire map
`bool IsIpAddressDuplicate(string ip, Server exclude)`	Check for IP conflicts
`bool IsPatchPanelPort(string deviceName)`	Check if a device is a patch panel port
`string ResolveThroughPatchPanel(string port, string from)`	Resolve a patch panel connection

Methods — Customer / Speed Updates

Signature	Notes
`void UpdateCustomerServerCountAndSpeed(int custId, int count, float speed)`	Update customer metrics
`void UpdateDeviceCustomerID(string deviceName, int customerID)`	Reassign a device's customer

Methods — Broken Devices

Signature	Notes
`void AddBrokenServer(Server server)`	Mark server as broken
`void AddBrokenSwitch(NetworkSwitch ns)`	Mark switch as broken
`void RemoveBrokenServer(string serverId)`	Unmark server
`void RemoveBrokenSwitch(string switchId)`	Unmark switch

Methods — LACP

Signature	Notes
`int CreateLACPGroup(string deviceA, string deviceB, List<int> cableIds)`	Create a link aggregation group
`void RemoveLACPGroup(int groupId)`	Remove a LACP group
`void RemoveCableFromLACPGroups(int cableId)`	Remove a cable from its LACP groups
`void SetLACPGroups(Dictionary<int, LACPGroup> groups)`	Bulk-set LACP groups

Nested: `NetworkMap.Device`

Type	Name	Notes
`string`	`Name`	Device name
`CableLink.TypeOfLink`	`Type`	Link type (Ethernet, fiber, etc.)
`int`	`CustomerID`	Owning customer (-1 = none)
`HashSet<Device>`	`Connections`	Adjacent devices

Nested: `NetworkMap.LACPGroup`

Type	Name	Notes
`int`	`groupId`
`string`	`deviceA` / `deviceB`	Endpoint device names
`List<int>`	`cableIds`	Cables in this LAG
`float GetAggregatedSpeed(Dictionary<int, CableInfo> cables)`	Total LAG bandwidth

7. `Server` (extends `UsableObject`)

Individual server — processing, IP, customer assignment, health, power state.

Instance Properties / Fields

Type	Name	Notes
`string`	`ServerID`	Unique server identifier
`int`	`serverType`	Type index (1U/2U/3U)
`string`	`IP`	Assigned IP address
`int`	`appID`	Assigned application ID
`float`	`maxProcessingSpeed`	Maximum IOPS/speed
`float`	`currentProcessingSpeed`	Current speed
`float`	`previousProcessingSpeed`	Previous tick's speed
`bool`	`isOn`	Power state
`bool`	`isBroken`	Is this server broken
`int`	`timeToBrake`	Ticks until breakdown (countdown)
`int`	`eolTime`	End-of-life time
`int`	`existingWarningSigns`	Active warning sign count
`int`	`existingErrorSigns`	Active error sign count
`bool`	`isWarningCleared`	Has the warning been acknowledged
`bool`	`hasInitialized`	Has the server finished init
`List<CableLink>`	`activeLinks`	Currently active cable connections
`Il2CppReferenceArray<CableLink>`	`cablelinks`	All cable link slots
`Image`	`customerLogo`	Customer logo on the server screen
`Image`	`appLogo`	App logo on the server screen
`GameObject`	`canvas`	Server screen UI canvas
`TextMeshProUGUI`	`txtIP`	IP text on the screen
`TextMeshProUGUI`	`txtServerScreen`	Screen text
`Coroutine`	`breakingRoutine`	Active breaking coroutine

Methods

Signature	Notes
`void PowerButton(bool forceState = false)`	Toggle power (or force on/off)
`bool IsAnyCableConnected()`	Check if any cable is connected
`void ServerInsertedInRack(ServerSaveData data = null)`	Called when placed into a rack
`void RegisterLink(CableLink link)`	Register a new cable link
`void UnregisterLink(CableLink link)`	Unregister a cable link
`void UpdateServerScreenUI()`	Refresh the screen display
`void ButtonClickChangeCustomer(bool forward)`	Cycle customer assignment
`int GetNextCustomerID(int currentID, bool forward)`	Get next valid customer ID
`void ButtonClickChangeIP()`	Open IP change dialog
`void SetIP(string ip)`	Set the server's IP address
`int GetCustomerID()`	Get the assigned customer ID
`void UpdateCustomer(int newCustomerID)`	Change customer assignment
`void UpdateAppID(int appID)`	Change app assignment
`bool ValidateRackPosition()`	Check if correctly placed in rack
`void ClearWarningSign(bool isPreserved = false)`	Clear a warning sign
`void ClearErrorSign()`	Clear an error sign
`void RepairDevice()`	Repair this server
`void SetPowerLightMaterial(Material mat)`	Change the power LED material

8. `NetworkSwitch` (extends `UsableObject`)

Network switch device — similar lifecycle to Server.

Instance Properties / Fields

Type	Name	Notes
`string`	`switchId`	Unique ID
`int`	`switchType`	Type index
`bool`	`isOn`	Power state
`string`	`label`	Display label
`int`	`timeToBrake`	Countdown to breakdown
`int`	`eolTime`	End-of-life time
`bool`	`isBroken`	Broken state
`int`	`existingWarningSigns` / `existingErrorSigns`	Sign counters
`bool`	`isWarningCleared`	Warning acknowledged
`Coroutine`	`breakingRoutine`	Breaking coroutine
`GameObject`	`canvas`	Screen canvas
`TextMeshProUGUI`	`txtScreen`	Screen text

Methods

Signature	Notes
`void PowerButton(bool forceState = false)`	Toggle power
`bool IsAnyCableConnected()`	Check cable connections
`void SwitchInsertedInRack(SwitchSaveData data = null)`	Placed in rack
`void DisconnectCablesWhenSwitchIsOff()`	Disconnect all cables on power-off
`void HandleNewCableWhileOff(int cableId)`	Handle cable plugged in while off
`string GetSwitchId()`	Get switch ID
`void UpdateScreenUI()`	Refresh screen
`void DisconnectCables()`	Disconnect all
`void ReconnectCables()`	Reconnect all
`bool ValidateRackPosition()`	Validate placement
`void ButtonShowNetworkSwitchConfig()`	Open config UI
`void ClearWarningSign(bool isPreserved = false)`	Clear warning
`void ClearErrorSign()`	Clear error

9. `StaticUIElements` (extends `MonoBehaviour`) — HUD / Notifications

The main HUD controller. Manages top-left stats, notifications, messages, cursor hints.

Static Fields

Type	Name	Notes
`int`	`MAX_MESSAGES`	Max messages in the message field
`float`	`MESSAGE_DURATION`	How long messages stay visible

Instance Properties / Fields — HUD Elements

Type	Name	Notes
`GameObject`	`canvasStatic`	The main static HUD canvas
`GameObject`	`imagePointer`	Pointer/crosshair image
`TextMeshProUGUI`	`txtUnderPointer`	Tooltip text under cursor
`Image`	`holdKeyIndicator`	Hold-key progress ring
`Image`	`nextToPointer`	Sprite shown next to cursor
`Image`	`blackOver`	Black overlay (fade to black)
`GameObject`	`loading`	Loading screen GO
`TextMeshProUGUI`	`txtMessagesField`	Message log text
`GameObject`	`errorSignPrefab`	Prefab for error signs
`GameObject`	`warningSignPrefab`	Prefab for warning signs
`int`	`nextErrorWarningUID`	UID counter

Instance Properties / Fields — Top-Left Stats

Type	Name	Notes
`GameObject`	`topLeft_coinsPrestige`	Stats container
`TextMeshProUGUI`	`topLeft_coinTXT`	Money display
`TextMeshProUGUI`	`topLeft_MoneyPerSecond`	Money/sec rate
`TextMeshProUGUI`	`topLeft_ExpensesPerSecond`	Expenses/sec rate
`TextMeshProUGUI`	`topLeft_reputationTXT`	Reputation display
`TextMeshProUGUI`	`topLeft_xpTXT`	XP display
`TextMeshProUGUI`	`topLeft_XPPerSecond`	XP/sec rate

Type	Name	Notes
`GameObject`	`notificationGO`	Notification banner game object
`Image`	`notificationSprite`	Notification icon
`TextMeshProUGUI`	`notificationText`	Notification text

Instance Properties / Fields — Input / Key Hints

Type	Name	Notes
`bool`	`isKeyboardOrMouse`	Input device detection
`GameObject`	`keyhint_buttonE`	"Press E" hint
`Transform`	`keyboardParent`	Parent for key hint prefabs
`GameObject`	`keyHintCustomPrefab`	Custom key hint prefab
`GameObject`	`prefabParticleUpgrade`	Upgrade particle effect
`TextMeshProUGUI`	`txtLoadingInfo`	Loading screen info text

Methods

Signature	Notes
`void CalculateRates(out float moneyPerSec, out float xpPerSec, out float expensesPerSec)`	Very useful: compute live financial rates
`void SetNotification(int localisationUID, Sprite sprite = null, string text = "")`	Show a notification banner
`void ShowStaticCanvas(bool active)`	Show/hide the HUD
`GameObject CreateCustomKeyHint(InputAction action, int textUID, Transform parent = null, bool isPermanent = false)`	Create a key hint
`void RemoveCustomKeyHint()`	Remove custom key hint
`void InstantiateParticleUpgrade(Transform t)`	Spawn upgrade particles
`void UpdateMessageDisplay()`	Refresh message field
`void AddMeesageInField(string message)`	Add a message to the message log (note: typo is in the game)
`int InstantiateErrorWarningSign(bool isError, Vector3 objectPos)`	Spawn an error/warning sign at position
`void DestroyErrorWarningSign(int uid)`	Destroy a sign by UID
`void ShowSpriteNextToPointer(Sprite s)`	Show a sprite next to cursor
`void ClearSpriteNextToPointer()`	Clear cursor sprite
`void ShowTextUnderCursor(string text)`	Show tooltip text
`void HideTextUnderCursor()`	Hide tooltip text
`void UpdateHoldProgress(float value)`	Update the hold-key progress (0..1)
`void SetLoadingInfo(string s)`	Set loading screen text

10. `TimeController` (extends `MonoBehaviour`)

Singleton day/night cycle and time tracking.

Static Fields

Type	Name	Notes
`TimeController`	`instance`	Singleton accessor
`OnEndOfTheDay`	`onEndOfTheDayCallback`	Event: end of day

Instance Properties / Fields

Type	Name	Notes
`float`	`secondsInFullDay`	Real seconds per game day
`float`	`currentTimeOfDay`	Current time (0.0–1.0 normalized)
`float`	`timeMultiplier`	Speed multiplier
`int`	`day`	Current day number

Methods

Signature	Notes
`bool TimeIsBetween(float startHour, float endHour)`	Check if current time is in range
`float CurrentTimeInHours()`	Get current time as hours (0–24)
`int HoursFromDate(float time, int day)`	Convert to total hours

11. `CustomerBase` (extends `MonoBehaviour`)

A customer tenant in the data center — tracks SLA, app performance, revenue.

Static Fields

Type	Name	Notes
`float`	`EPSILON`	Floating-point comparison epsilon
`int`	`satisfiedCustomerCount`	Global count of satisfied customers

Instance Properties / Fields

Type	Name	Notes
`int`	`customerBaseID`	Base slot ID
`int`	`customerID`	Customer data ID
`Image`	`customerLogo`	Logo image reference
`CustomerItem`	`customerItem`	Customer definition
`TextMeshProUGUI`	`txtNumberOfServers`	Server count display
`TextMeshProUGUI`	`txtCurrentSpeed`	Current speed display
`float`	`currentSpeed`	Current total processing speed
`int`	`howLongToWaitBeforeFine`	Grace period before penalties
`float`	`currentTotalAppSpeeRequirements`	Current total requirements
`float`	`maximumAppRequirementsSpeedTotal`	Max possible requirement
`bool`	`wasFullySatisfied`	Was fully satisfied last check

Methods

Signature	Notes
`IEnumerator CheckIfAppRequirementsAreMet()`	Continuous SLA check
`IEnumerator UpdateMoney()`	Continuous revenue/penalty generation
`bool AreAllAppRequirementsMet()`	One-shot SLA check
`void UpdateCustomerServerCountAndSpeed(int count, float speed)`	Update metrics
`void AddAppPerformance(int appID, float speed)`	Add speed to an app
`void ResetAllAppSpeeds()`	Zero out all app speeds
`bool IsIPPresent(string ip)`	Check if an IP is configured here
`int GetAppIDForIP(string ip)`	Get app ID for an IP
`void SetUpBase(CustomerItem item, CustomerBaseSaveData data = null)`	Initialize with a customer
`void SetUpApp(int appID, int difficulty, CustomerBaseSaveData data = null)`	Set up an app slot
`string AppText(int appID, string subnet)`	Generate display text for an app
`void UpdateSpeedOnCustomerBaseApp(int appID, float speed)`	Update per-app speed
`int GetServerTypeForIP(string ip)`	Get required server type for IP
`float GetTotalAppSpeed()`	Get total app speed
`void LoadData(CustomerBaseSaveData data)`	Restore from save

12. `CustomerItem` (extends `ScriptableObject`)

Static definition of a customer — what they need, what they pay.

Fields

Type	Name	Notes
`int`	`customerID`	Unique ID
`string`	`customerName`	Display name
`Sprite`	`logo`	Company logo sprite
`Il2CppStructArray<int>`	`appTypes`	App type IDs this customer needs
`int`	`difficulty`	Difficulty tier
`int`	`reputation`	Reputation reward/requirement
`float`	`sla`	SLA target (speed threshold)
`int`	`downtimeFinePerHour`	Penalty per hour of downtime

13. `SaveSystem` (static utility class)

Save/load system.

Static Fields

Type	Name	Notes
`string`	`saveDirPath`	Save directory path
`string`	`loadSaveName`	Name of save being loaded
`int`	`version`	Current save version
`int`	`versionToIgnoreFrom`	Compat cutoff version
`bool`	`isQuitting`	App is quitting flag

Static Methods

Signature	Notes
`void SaveGame(string savename = null, string stringNameOfSave = null)`	Save game
`SaveData LoadGame(string savename)`	Load and return save data
`void DeleteSaveFile(string savename)`	Delete a save
`void SaveGameData()`	Serialize current game state
`string NewestSave()`	Get the newest save file name
`void LoadGameData()`	Apply loaded data to game
`void Load(string savename, bool isFromPauseMenu)`	Full load pipeline
`void AutoSave()`	Trigger auto-save

Singleton Access Pattern (from Rust via Il2Cpp FFI)

All major managers follow the singleton pattern:

MainGameManager.instance
PlayerManager.instance
BalanceSheet.instance
TechnicianManager.instance
TimeController.instance

These are static fields returning the live MonoBehaviour instance. From Rust FFI, you would:

Resolve the Il2Cpp class pointer for e.g. Il2Cpp.MainGameManager
Read the static field instance
Use the instance pointer to call methods or read fields

Key Modding Use Cases

Use Case	Class(es)	Key Members
Read player money/XP/rep	`StaticUIElements`	`CalculateRates()`, `topLeft_coinTXT`, etc.
Show notifications	`StaticUIElements`	`SetNotification()`, `AddMeesageInField()`
Financial data	`BalanceSheet`	`currentRecords`, `history`, `GetLatestSnapshot()`
Server health monitoring	`Server`, `NetworkMap`	`isBroken`, `brokenServers`, `brokenSwitches`
Network topology	`NetworkMap`	`devices`, `FindAllRoutes()`, `PrintNetworkMap()`
Time/day info	`TimeController`	`day`, `CurrentTimeInHours()`, `timeMultiplier`
Technician status	`Technician`, `TechnicianManager`	`isBusy`, `currentState`, `QueuedJobCount`
Customer SLA status	`CustomerBase`	`AreAllAppRequirementsMet()`, `currentSpeed`
Save/load	`SaveSystem`	`SaveGame()`, `LoadGame()`, `AutoSave()`
Pause/unpause	`MainGameManager`	`isGamePaused`
Player interaction lock	`PlayerManager`	`enabledRayLookInteract`, `PlayerStopMovement()`
Spawn error/warning signs	`StaticUIElements`	`InstantiateErrorWarningSign()`

DataCenter Multiplayer Mod Documentation

Game Api Reference

Data Center Game — API Reference for Modding (FFI via Il2Cpp)

1. BalanceSheet (extends MonoBehaviour)

Static Fields

Instance Properties / Fields

Methods

Nested: BalanceSheet.CustomerRecord

Nested: BalanceSheet.MonthlySnapshot

2. Technician (extends MonoBehaviour)

Enum: Technician.TechnicianState

Instance Properties / Fields

Methods

3. TechnicianManager (extends MonoBehaviour)

Static Fields

Instance Properties / Fields

Methods

Nested: TechnicianManager.RepairJob

4. MainGameManager (extends MonoBehaviour)

Static Fields

Instance Properties / Fields — Game State

Instance Properties / Fields — Customer Data

Instance Properties / Fields — Prefabs / Scene References

Methods — Customer / Subnet Management

Methods — UI / Canvas

Methods — Save / Load / Misc

5. PlayerManager (extends MonoBehaviour)

Enum: PlayerManager.ObjectInHand

Delegate: PlayerManager.OnBuyingWall

Static Fields

Instance Properties / Fields

Methods

6. NetworkMap (extends MonoBehaviour)

Instance Properties / Fields — Dictionaries (the core data)

Methods — Device Management

Methods — Connections / Routing

Methods — Customer / Speed Updates

Methods — Broken Devices

Methods — LACP

Nested: NetworkMap.Device

Nested: NetworkMap.LACPGroup

7. Server (extends UsableObject)

Instance Properties / Fields

Methods

8. NetworkSwitch (extends UsableObject)

Instance Properties / Fields

Methods

9. StaticUIElements (extends MonoBehaviour) — HUD / Notifications

Static Fields

Instance Properties / Fields — HUD Elements

Instance Properties / Fields — Top-Left Stats

Instance Properties / Fields — Notification Banner

Instance Properties / Fields — Input / Key Hints

Methods

10. TimeController (extends MonoBehaviour)

Static Fields

Instance Properties / Fields

Methods

11. CustomerBase (extends MonoBehaviour)

Static Fields

Instance Properties / Fields

Methods

12. CustomerItem (extends ScriptableObject)

Fields

13. SaveSystem (static utility class)

Static Fields

Static Methods

Singleton Access Pattern (from Rust via Il2Cpp FFI)

Key Modding Use Cases

1. `BalanceSheet` (extends `MonoBehaviour`)

Nested: `BalanceSheet.CustomerRecord`

Nested: `BalanceSheet.MonthlySnapshot`

2. `Technician` (extends `MonoBehaviour`)

Enum: `Technician.TechnicianState`

3. `TechnicianManager` (extends `MonoBehaviour`)

Nested: `TechnicianManager.RepairJob`

4. `MainGameManager` (extends `MonoBehaviour`)

5. `PlayerManager` (extends `MonoBehaviour`)

Enum: `PlayerManager.ObjectInHand`

Delegate: `PlayerManager.OnBuyingWall`

6. `NetworkMap` (extends `MonoBehaviour`)

Nested: `NetworkMap.Device`

Nested: `NetworkMap.LACPGroup`

7. `Server` (extends `UsableObject`)

8. `NetworkSwitch` (extends `UsableObject`)

9. `StaticUIElements` (extends `MonoBehaviour`) — HUD / Notifications

10. `TimeController` (extends `MonoBehaviour`)

11. `CustomerBase` (extends `MonoBehaviour`)

12. `CustomerItem` (extends `ScriptableObject`)

13. `SaveSystem` (static utility class)