CVR Host Functions

TL;DR: ~95 hand-written host functions bound into the WASM CVR module name. Grouped by subsystem. Each table lists the import name, a brief purpose, and the access mask the binding enforces. When the Scope column is blank, the binding uses the 2-axis CheckAccess (Object + Owner).

Conventions

• Import module: CVR unless stated otherwise.
• Signature shape is summarized; see the exact C# in CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/*Bindings.cs (and the shipped mirror at CVR-GameFiles/WasmScripting/*Bindings.cs) for parameter types.
• Object column: Avatar / Prop / World / Any — which content types may call.
• Owner column: Self / Other / Any.
• Scope column: Self / ExternalContent / Any — only applies when the binding targets a specific wrapped object.
• The shipped decompile (CVR-GameFiles/) lags the CCK source by a build or two. Where they disagree, the CCK source is the intended surface; import names flagged [new] are in the CCK bindings but not yet in the shipped decompile.

Player

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/PlayerBindings.cs. Read-only information about any player in the instance. CVR_Player_GetUserId still needs the world permission AccessUserIdentity; CVR_Player_GetUsername was released from the gate as of Preview.27-WASM.27.

Function	Purpose	Object	Owner	Scope
CVR_Player_GetAllPlayers	array of all Player handles including local	World	Any	—
CVR_Player_GetRemotePlayers	array of remote-only handles	World	Any	—
CVR_Player_GetUserId	user ID (string); redacted to Guid.Empty without AccessUserIdentity	World	Any	—
CVR_Player_GetUsername	display name (string)	World	Any	—
CVR_Player_GetNetworkId	16-bit network ID (for send addressing)	World	Any	—
CVR_Player_GetGameObject	root GameObject handle	World	Any	—
CVR_Player_GetViewPoint	Transform at head position	World	Any	—
CVR_Player_GetVoicePoint	Transform at mouth position	World	Any	—
CVR_Player_GetInitialHeight	initial scaled height (m)	World	Any	—
CVR_Player_GetCurrentHeight	current scaled height (m)	World	Any	—
CVR_Player_GetGravity	current gravity vector	World	Any	—
CVR_Player_SetOriginPosition	teleport a player (not implemented)	World	Any	—
CVR_Player_SetOriginRotation	rotate player origin (not implemented)	World	Any	—
CVR_Player_GetWornAvatar	Avatar currently worn by this player	World	Any	—
CVR_Player_GetSpawnedProps	array of Prop handles this player spawned	World	Any	—

[WIP] CVR_Player_SetOriginPosition and CVR_Player_SetOriginRotation both throw NotImplementedException in the current binding. Use CVR_LocalPlayer_SetPosition / SetRotation / SetPositionAndRotation for the local player only.

The shipped decompile (CVR-GameFiles/WasmScripting/PlayerBindings.cs) still exports the older property-style names (CVR_Player_UserId, CVR_Player_Username, CVR_Player_NetworkId, CVR_Player_GameObject, CVR_Player_ViewPoint, CVR_Player_VoicePoint, CVR_Player_Gravity) and implements CVR_Player_GetWornAvatar as return 0L. The CCK source replaces these with Get* names and a real AvatarDescriptor lookup. Expect one or two builds of mismatch during the property→method rename rollout; the CCK shim always points at the current host names.

Author-facing names: the CCK stub CCKStubs/PlayerCCK.cs exposes these bindings as player.GetUserId(), player.GetUsername(), player.GetNetworkId(), player.GetGameObject(), player.GetViewPoint(), player.GetVoicePoint(), player.GetWornAvatar(), player.GetSpawnedProps(), etc. Prefer the method form (makes marshalling cost obvious). See API Conventions.

LocalPlayer

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/LocalPlayerBindings.cs. The local player. All setters modify your own client only. Getters have no access check; every setter calls CheckAccess(World, Any) so only world scripts can drive the local player. Reads fall through PlayerSetup.Instance / BetterBetterCharacterController.Instance; the SetPosition / SetVelocity / SetRotation / SetPositionAndRotation setters route through BetterBetterCharacterController.

Function	Purpose	Object	Owner	Scope
CVR_LocalPlayer_PlayerObject	Player handle for self	any	any	—
CVR_LocalPlayer_GetPlaySpaceScale	VR play-space scale	any	any	—
CVR_LocalPlayer_GetPlaySpaceOffset	VR play-space offset	any	any	—
CVR_LocalPlayer_GetPosition	camera rig position	any	any	—
CVR_LocalPlayer_SetPosition	teleport local player	World	Any	—
CVR_LocalPlayer_GetVelocity	current rig velocity	any	any	—
CVR_LocalPlayer_SetVelocity	set rig velocity (e.g. impulse)	World	Any	—
CVR_LocalPlayer_GetRotation	rig rotation	any	any	—
CVR_LocalPlayer_SetRotation	set rig rotation	World	Any	—
CVR_LocalPlayer_SetPositionAndRotation [new]	atomic position + rotation + optional ground refresh	World	Any	—
CVR_LocalPlayer_SignalDiscontinuity [new]	bump continuity version — avatar dynamics + remote interp skip interpolation on next tick	World	Any	—
CVR_LocalPlayer_OffsetBy	relative offset — currently throws NotImplementedException	World	Any	—
CVR_LocalPlayer_MoveTo	smooth move-to — currently throws NotImplementedException	World	Any	—
CVR_LocalPlayer_SetImmobilized	disable locomotion	World	Any	—
CVR_LocalPlayer_IgnoreCollision [new]	toggle Physics.IgnoreCollision against every player collider	World	Any	Self
CVR_LocalPlayer_SetHeadHiddenCamera [new]	head-hiding hook fires when the camera’s OnPreCull runs	World	Any	Self
CVR_LocalPlayer_Respawn [new]	RootLogic.Instance.Respawn(true)	World	Any	—

Entries tagged [new] are in the CCK source (Preview.27-WASM.25 / .26) but not yet in the shipped decompile at CVR-GameFiles/WasmScripting/LocalPlayerBindings.cs. Guest calls to those names on older clients hit FillNonLinkedWithEmptyStubs and silently no-op.

Author-facing CCK stub: CCKStubs/LocalPlayerCCK.cs.

Avatar

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/AvatarBindings.cs. Both ObjectContexts are allowed — an avatar script can inspect its wearer’s avatar; a world script can inspect any avatar in the instance. The collision-exclude setters are world-only.

Function	Purpose	Object	Owner	Scope
CVR_Avatar_GetAllAvatars	array of currently worn avatars	any	any	—
CVR_Avatar_GetCurrentAvatar	avatar owning the calling VM (Avatar context)	any	any	—
CVR_Avatar_GetWearer	Player wearing an avatar	any	any	—
CVR_Avatar_GetName	display name (Player.AvatarMetadata.AssetName)	any	any	—
CVR_Avatar_GetContentId	CVR content ID (for identification)	any	any	—
CVR_Avatar_GetRootObject [new]	root GameObject handle	any	any	—
CVR_Avatar_GetRootTransform [new]	root Transform handle	any	any	—
CVR_Avatar_SetCollisionExcludeLayers [new]	set the LayerMask of layers the avatar’s colliders ignore	World	Any	—
CVR_Avatar_GetCollisionExcludeLayers [new]	read the current exclude mask	any	any	—
CVR_Avatar_ResetCollisionExcludeLayers [new]	clear the exclude mask	World	Any	—

Entries tagged [new] landed in the CCK source with Preview.27-WASM.27 (CVR.Avatar bindings live). The shipped decompile at CVR-GameFiles/WasmScripting/AvatarBindings.cs still contains empty stubs for the five original entries — on older clients, GetAllAvatars / GetCurrentAvatar / GetWearer / GetName / GetContentId do not return data.

AvatarPoint

Source: AvatarPointBindings.cs. Query named anchor points on an avatar (e.g. head, hand) in various reference frames.

Function	Purpose	Object	Owner	Scope
CVR_AvatarPoint_GetPointTransform	Transform for the named point	Any	Any	—
CVR_AvatarPoint_GetPointPosition	world-space position	Any	Any	—
CVR_AvatarPoint_GetLocalPointPosition	local-space (avatar-rooted)	Any	Any	—
CVR_AvatarPoint_GetRelativePointPosition	relative to another reference transform	Any	Any	—
CVR_AvatarPoint_GetPointRotation	world-space rotation	Any	Any	—
CVR_AvatarPoint_GetLocalPointRotation	local-space	Any	Any	—
CVR_AvatarPoint_GetRelativePointRotation	relative	Any	Any	—
CVR_AvatarPoint_GetPointForward	world-space forward vector	Any	Any	—
CVR_AvatarPoint_GetPointRight	world-space right vector	Any	Any	—
CVR_AvatarPoint_GetPointUp	world-space up vector	Any	Any	—

World

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/WorldBindings.cs.

Function	Purpose	Object	Owner	Scope
CVR_World_GetCurrentWorld	World handle for the loaded world	any	any	—
CVR_World_GetName	display name	any	any	—
CVR_World_GetContentId	CVR content ID	any	any	—

All three are registered but have empty bodies in the current decompile and in the CCK source — calls compile and return without writing to the provided output pointers. Treat World.Name / World.ContentId / World.GetCurrentWorld() as forward-looking until a future preview fills in the implementations.

Prop

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/PropBindings.cs. Spawned object (CCK CVRSpawnable).

Function	Purpose	Object	Owner	Scope
CVR_Prop_GetAllProps	all spawned props in the instance	any	any	—
CVR_Prop_GetCurrentProp	the prop owning the calling VM (Prop context)	any	any	—
CVR_Prop_GetSpawner	Player who spawned it	any	any	—
CVR_Prop_GetName [new]	display name (PropData.ContentMetadata.AssetName)	any	any	—
CVR_Prop_GetContentId	CVR content ID	any	any	—
CVR_Prop_GetRootObject	root GameObject	any	any	—
CVR_Prop_GetRootTransform [new]	root Transform	any	any	—
CVR_Prop_Destroy	despawn the prop	World | Prop	Self	—
CVR_Prop_SetCollisionExcludeLayers [new]	set the LayerMask of layers the prop’s colliders ignore	World	Any	—
CVR_Prop_GetCollisionExcludeLayers [new]	read the current exclude mask	any	any	—
CVR_Prop_ResetCollisionExcludeLayers [new]	clear the exclude mask	World	Any	—

The shipped decompile still exposes the old name CVR_Prop_GetTransform; the CCK source renamed this to CVR_Prop_GetRootTransform and added the GetName + collision-exclude-layers functions (Preview.27-WASM.23).

CVR_Prop_Destroy widened in Preview.27-WASM.27 from (World, Any) to (World | Prop, Self) — a prop script can now delete its own CVRSpawnable without going through the world VM.

Portal

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/PortalBindings.cs. World portals between instances/worlds. Getters run with no access check; only the two mutators call CheckAccess(World, Any).

Function	Purpose	Object	Owner	Scope
CVR_Portal_GetPosition	world-space position	any	any	—
CVR_Portal_GetRotation	world-space rotation	any	any	—
CVR_Portal_SetPosition	move the portal (if unanchored)	World	Any	—
CVR_Portal_SetRotation	rotate the portal	World	Any	—
CVR_Portal_IsAnchored	is the portal stuck to a surface	any	any	—
CVR_Portal_GetSpawner	Player who dropped it	any	any	—
CVR_Portal_GetRootObject	root GameObject	any	any	—
CVR_Portal_GetTransform	root Transform	any	any	—

Networking

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/NetworkingBindings.cs. No CheckAccess call on any binding; every ObjectContext can send and receive. See Networking for details.

Function	Purpose	Object	Owner	Scope
CVR_Networking_SendMessage	send bytes to one or more players (SendType = Unreliable/UnreliableSequenced/Reliable)	any	any	—
CVR_Networking_WillMessageBeDropped	returns 1 if queuedBytes + size > 65536 (64 KB queue limit)	any	any	—
CVR_Networking_NetworkCloggedPercentage	bytesSent / 16384 as a float — fraction of the spike budget currently in flight	any	any	—
CVR_Networking_GetInstanceOwner	Player handle of the authoritative owner	any	any	—
CVR_Networking_GetPing	NetworkManager.Instance.GameNetworkPing	any	any	—
CVR_Networking_GetServerStartTime [new]	Unix timestamp (ms) when the game server started	any	any	—
CVR_Networking_GetServerUptime [new]	Game server uptime in ms	any	any	—

Receive side: the host dispatches incoming payloads by calling the guest export CVR_Networking_OnReceiveMessage(senderHandle, msgPtr, msgLen) on every message addressed to the local client (WasmVM.CallOnReceiveMessage, WasmNetworkManager.OnReceiveMessage). The guest-side shim surfaces this as the Networking.OnReceiveMessage delegate.

Budget constants (from CVR-GameFiles/WasmScripting/WasmNetworkManager.cs):

Constant	Value	Meaning
MaxBytesPerSecond	4096	Sustained send budget, drained per second of wall clock.
MaxBytesSendSpike	16384	Instantaneous cap on in-flight bytes. A message may go over the sustained rate if the spike budget allows, and is held in the queue until it fits.
MaxBytesQueued	65536	Total bytes allowed in the send queue. WillMessageBeDropped returns true when adding the proposed size would cross this.

FileStorage

Source: FileStorageLinks.cs. World-only. Requires the FileStorageApiAllowed world permission. See File Storage.

Function	Purpose	Object	Owner	Scope
FileStorage_ReadInternal_Full	read whole file	World	Any	—
FileStorage_ReadInternal_Partial	read range	World	Any	—
FileStorage_WriteInternal_Full	overwrite file	World	Any	—
FileStorage_WriteInternal_Partial	partial write	World	Any	—
FileStorage_DeleteFileInternal	delete file	World	Any	—
FileStorage_RenameFileInternal	rename within this world	World	Any	—
FileStorage_FileExistsInternal	existence probe	World	Any	—
FileStorage_GetFilesInternal	list filenames	World	Any	—
FileStorage_GetFileSizeInternal	size in bytes	World	Any	—
FileStorage_GetTotalSizeInternal	total used bytes	World	Any	—
FileStorage_GetTotalCapacityInternal	current quota limit	World	Any	—

The guest-facing shim WasmScripting.FileStorage (CCKStubs/FileStorageCCK.cs) does not wrap the bindings with permission-helper methods — call WorldPermissions.Request(new WorldPermissions { FileStorageApiAllowed = true, ... }) yourself, then check WorldPermissions.CurrentPermissions.FileStorageApiAllowed before calling ReadFile / WriteFile / etc. The earlier CanUseFileStorage() / RequestUseFileStorage() helpers were removed in Preview.27-WASM.25.

Util

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/UtilBindings.cs.

Function	Purpose	Object	Owner	Scope
CVR_Proxies_IsDestroyed	returns 1 if the wrapped object no longer exists	any	any	—
CVR_Utils_GetEpochTime	monotonic tick counter from WasmManager.EpochTime (100 kHz)	any	any	—
CVR_Utils_AddWasmBehaviour	attach a WasmBehaviour at runtime and call its LateInitialize	World	Any	Self

CVR_Utils_AddWasmBehaviour enforces Scope=Self: you can only attach behaviours to objects inside your own content root.

WasmUtils

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/WasmUtilsBindings.cs. Exposes the host’s own CVRScriptScopeContext / CVRScriptOwnerContext evaluation so scripts can branch on permission outcome before calling a scope-gated API. No CheckAccess.

Function	Purpose	Object	Owner	Scope
CVR_WasmUtils_GetScopeContext	returns the scope flag for a wrapped handle (None / Self / ExternalContent)	any	any	—
CVR_WasmUtils_GetOwnerContext	returns the owner flag for this VM (None / Self / Other)	any	any	—

The shim adds a third helper, WasmUtils.GetObjectContext(), that reads the value set at VM construction (CVRScriptObjectContext.Avatar / Prop / World). It is returned guest-side without a host call.

WorldSettings

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/WorldSettingsBindings.cs. Local-only toggles that drive CVR’s own visibility managers. Both setters call CheckAccess(World, Any).

Function	Purpose	Object	Owner	Scope
CVR_WorldSettings_SetPropVisibility	SpawnableManager.SetSpawnableVisibility(v) — hides remote props + blocks local spawning	World	Any	—
CVR_WorldSettings_SetPlayerVisibility	CVRPlayerManager.Instance.SetRemotePlayerVisibility(v) — hides remote players + mutes voice for the local user	World	Any	—

Both entries are in the CCK bindings source but not in the shipped CVR-GameFiles/WasmScripting/ decompile — on a client without them, the imports are stubbed to no-op.

WorldPermissions

Source: CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/PermissionsBindings.cs. See World Permissions.

Function	Purpose	Object	Owner	Scope
WorldPermissions_RequestPermissions	marshals a WorldPermissionsMarshalStruct from guest memory and opens the CVR permission prompt	World	Any	—

Manual UnityEngine bindings

Source: CVR-GameFiles/WasmBinder.LinksManual.UnityEngine/. These aren’t CVR_* but worth listing alongside — they augment/override the generated UnityEngine bindings.

File	Covers
ObjectLinksManual.cs	Object.op_Equality, GetHashCode, Equals, ToString, 11 Instantiate overloads (all check World, Any, Self), Destroy, DestroyImmediate (both World, Any, Self)
DebugLinksManual.cs	debug_log / debug_logWarning / debug_logError / debug_logException — all imported from module unity, not UnityEngine. Debug.LogException routes to Debug.LogError with the message
GameObjectLinksManual.cs	AddComponent, GetComponent with type routing
GraphicsBufferLinksManual.cs	GraphicsBuffer marshaling

Not shown here

Any call through UnityEngine / TMPro / UnityEngine.AI / Audio / Rendering / UI / SceneManagement goes through a generated binding — see UnityEngine Surface. Anything not in either table is either stubbed (safe no-op) or rejected at CCKWasmModule compile time.

Source

• CVR.CCK.Wasm/Scripting/Links/APIs/Bindings/*.cs — current CCK-side host binding implementations.
• CVR-GameFiles/WasmScripting/*Bindings.cs — shipped counterpart (usually one or two builds behind).
• CVR-GameFiles/WasmScripting/BindingManager.cs — registration order.
• CVR-GameFiles/WasmScripting/WasmNetworkManager.cs — networking budget constants + send/receive paths.
• CVR-GameFiles/WasmBinder.LinksManual.UnityEngine/*.cs — manual UnityEngine override bindings.

Related

• Permissions — what the masks mean.
• CCK WasmModule — the shim wrapping all of this in idiomatic C#.
• Not Exposed — dangerous APIs you’ll not find here.