Env_message Entity modification HL2 (for Underhell mod)

A modification to Env_message. The button on the left is an Env_message entity with a parameter override in a new input function. This mod uses that override to specify which message index to print. This way numerous different messages can be displayed with only one Env_message entity.


The right-most button is a game_text entity and the middle two are Env_message entities using keyvalues instead of parameter overrides to print a message. Source code for this is available on request.