Allow users to access a sprites broadcast message info

[iampremo]

Provide a function allowing a user to get the broadcast message info from a sprite something like

sprite_get_broadcast_message_info( sprite )

this would return an array or struct that contains a time code and the string for the broadcast message.

 

[yoshikins]

This can probably be closed because we can access a sprite's broadcast message information from sprite_get_info()