Hello,
It would be interesting press any key and then came a circle with several emojis then need only move the mouse in the direction of the desired emojis and finally release the key.
If you happen to give up sending the emojis having already pressed the key, just not move the mouse in any direction and release the key.
This circle emojis can be a little transparent to not hinder the vision of the game.
For those who play without a mouse, it would be enough just indicate the direction with his own arrow keys.
This system not serve only to emojis, but for phrases or whatever the player want to configure.
I think I saw this system in Dota 2, but do not play a long time, so do not know if it still exists. It’s a quick, very functional and intuitive system.
Sorry for my bad english.