crit damage

The indicator is red here because the damage is enough to kill the cow

bow implementation

off-hand implementation

The indicator shows an X here because the bow is detected in the off-hand but is not being charged.

off-hand implementation

spear implementation

The reason the indicator is red is because the zombie has really low hp here, so the spear attack will kill him

Pre-Damage indicator

crossbow/ crossbow with firework implementation

Mace implementation

The indicator is yellow here because the damage is enough to kill that fox but he has a equipped totem of undying

with harming

spear implementation

off-hand spear