I hope we would
not have percentage as a parameter of chameleon and Invisibility that would
not work as 100% camouflage.
I hope we have stealth or camouflage power of spells combined stealth ability and the bonus added by what we have worn and the environment light and the noise that we make by our actions and our foot wear, then it should be compared with the sight power or keenness of the opposition which might be affected by the power of blindness spell and or a sight boost as well.
If combined camouflage power is greater than combined sight power of the opposition, then we can go by undetected, and the more the difference between those calculation, the less likely it would be for us to be detected.
But ion the other hand if we lack enough camouflage, to surpass the sight power of the opposition, then we are likely to be caught, and the more alarmed that they are the more keenly they look at their surrounding area, and their line of sight cone also affect their sight power, so objects in the middle of the sight cone are better seen than the objects in the edge of their sight cone.
The higher level monsters and bosses and the like should have more powerful sights and keenness, so you might be able to pass those clones easily, but you have to be wary of their boss and his body guards.
So if we sum it up, then there should be nothing like complete invisibility, but the combined effect of your spells, stealth skill, worn equipment, environmental parameters and your actions, compared with the combined effect of the opposition's sight/keenness power, their affecting spells and buffs that would affect sight, and their alarm state, and line of sight., would result in your chance of success when evading the opposition.
Edit: These are the parameters.
Stalker:
Sneak skill + Camouflage spells + Worn gear + Environmental effects + Action
Opposition:
Keenness + Blindness or Detect spells + Alarm state + Line of Sight
Environmental effect is the ambient light of the point where the stalker resides, and the fog effect and the like.
The Alarm state can be like this:
- Unconscious: Can not detect anything. :sleep2:
- Distracted: Attention caught by something else. :violin:
- Unaware: Idle, whistling, mumbling and the like... :whistling:
- Alarm level 1: Heard a sound, and looks toward the direction. :shifty:
- Alarm level 2: Saw a something and comes looking for it. :stare:
- Alarm level 3: Find something bad like a corpse and start actively searching. oo:
- Alarm level 4: Found the target but lost it and looking for it. :flame:
- Alarm level 5: Actively pursuing/atacking the target. :gun:
- Alarm level ?: Fleeing from the target. :bolt:
And each alarm state affects the sight power or keenness of the pursuer, so for instance in a scenario:
You can enter a bandit cave and use camouflage to pass a few of them, but as soon as you knock a bows on the ground, they might look at it and walk toward the place, and then catch you, because of higher kennness...