[inspire]

Does anyone know how I trigger for example that a CT has pressed a button, and shows that in public chat?

using ent "func_door"

Could be nice if anyone could help me.

[Drixevel]

public void OnPluginStart()
{
	HookEntityOutput("func_door", "OnFullyOpen", OnDoorOpened);
}

public void OnDoorOpened(const char[] output, int caller, int activator, float delay)
{
	if (activator > 0 && activator <= MaxClients && GetClientTeam(activator) == 3)
		PrintToChatAll("%N has opened the door.", activator);
}

Something like this if it's a door and it's fully opened. There's a lot of things you can change with this to get it how you want.

[inspire]

cant get it to work, with your lines above.

[Drixevel]

public void OnPluginStart()
{
	HookEntityOutput("func_button", "OnPressed", OnButtonPressed);
}

public void OnButtonPressed(const char[] output, int caller, int activator, float delay)
{
	if (activator > 0 && activator <= MaxClients && GetClientTeam(activator) == 3)
		PrintToChatAll("%N has pressed a button.", activator);
}

Think I misunderstood what you meant by using ent "func_door", this should work for buttons and only be called if you're a CT.