moved stealth preventing NPC target passing to a property, so that other talents could use it

game/modules/tome/class/NPC.lua

@@ -249,7 +249,7 @@ function _M:seen_by(who)
 	if not who.x or not self:hasLOS(who.x, who.y) then return end
 	-- Check if it's actually a being of cold machinery and not of blood and flesh
 	if not who.aiSeeTargetPos then return end
-	if self.ai_target.actor and not who_target:isTalentActive(who_target.T_STEALTH) then
+	if self.ai_target.actor and not who_target:attr("stealthed_prevents_targetting") then
 		-- Pass last seen coordinates
 		if self.ai_target.actor == who_target then
 			-- Adding some type-safety checks, but this isn't fixing the source of the errors

game/modules/tome/data/talents/cunning/stealth.lua

@@ -90,6 +90,7 @@ newTalent{
 			stealth = self:addTemporaryValue("stealth", t.getStealthPower(self, t)),
 			lite = self:addTemporaryValue("lite", -1000),
 			infra = self:addTemporaryValue("infravision", 3),  -- Losing wall visibility is already annoying, may as well let stealth have a vision advantage
+			stealthed_prevents_targetting = self:addTemporaryValue("stealthed_prevents_targetting", 1),
 		}
 		self:resetCanSeeCacheOf()
 		if self.updateMainShader then self:updateMainShader() end
@@ -99,6 +100,7 @@ newTalent{
 		self:removeTemporaryValue("stealth", p.stealth)
 		self:removeTemporaryValue("infravision", p.infra)
 		self:removeTemporaryValue("lite", p.lite)
+		self:removeTemporaryValue("stealthed_prevents_targetting", p.stealthed_prevents_targetting)
 		if self:knowTalent(self.T_TERRORIZE) then
 			local t = self:getTalentFromId(self.T_TERRORIZE)
 			t.terrorize(self,t)