objc

Send Objective-C messages. Installed by the ffi capability on the cocos (Cocotron) builds — iOS and Android. The Miniclip cocos titles run a Cocotron Objective-C runtime on Android too, so the runtime functions resolve on both. On non-cocos games (il2cpp/Unity, e.g. Mobile Legends) objc is nil and not installed. arm64.

objc.class

objc.class(name: string): pointer|nil

Returns the Class object for name, or nil.

objc.object

objc.object(p: pointer|integer): object

Wraps an id as an object userdata.

objc.selector

objc.selector(name: string): integer

Returns the SEL for name. Rarely needed; obj:msg takes a selector string directly.

object userdata

obj:msg

obj:msg(selector: string, signature: string, ...): any

Argument	Type	Description
selector	string	The Objective-C selector, e.g. "setHidden:".
signature	string	The ffi signature of the method without self/_cmd, e.g. "v(b)".
…		The arguments.

Sends selector to the object through objc_msgSend, marshalling self and _cmd for you. Return typed as in ffi.call.

Method	Returns	Description
obj:class()	pointer	The object’s class.
obj:class_name()	string	The class name.
obj:responds(selector)	boolean	Whether the object responds to a selector.
obj.pointer	pointer	The underlying id. tostring(obj) is its address.

-- hide a UIView-like object
local view = objc.object(some_pointer)
view:msg("setHidden:", "v(b)", true)