New Actor:alterTalentCost method

game/modules/tome/class/Actor.lua

@@ -4811,6 +4811,10 @@ function _M:getFeedbackDecay(mult)
 	end
 end
 
+function _M:alterTalentCost(t, rname, cost)
+	return cost
+end
+
 --- Called before a talent is used
 -- Check the actor can cast it
 -- @param ab the talent (not the id, the table)
@@ -4879,6 +4883,7 @@ function _M:preUseTalent(ab, silent, fake)
 				cost = ab[res_def.sustain_prop]
 				if cost then
 					cost = util.getval(cost, self, ab) or 0
+					cost = self:alterTalentCost(ab, res_def.sustain_prop, cost)
 					rmin, rmax = self[res_def.getMinFunction](self), self[res_def.getMaxFunction](self)
 					if cost ~= 0 and self[res_def.minname] and self[res_def.maxname] and self[res_def.minname] + cost > self[res_def.maxname] then
 						if not silent then game.logPlayer(self, "You %s %s to activate %s.", res_def.invert_values and "have too much committed" or "do not have enough uncommitted", res_def.name, ab.name) end
@@ -4908,6 +4913,7 @@ function _M:preUseTalent(ab, silent, fake)
 			cost = ab[rname]
 			if cost then
 				cost = (util.getval(cost, self, ab) or 0) * (util.getval(res_def.cost_factor, self, ab, true) or 1)
+				cost = self:alterTalentCost(ab, rname, cost)
 				if cost ~= 0 then
 					rmin, rmax = self[res_def.getMinFunction](self), self[res_def.getMaxFunction](self)
 					if res_def.invert_values then
@@ -5472,6 +5478,7 @@ function _M:postUseTalent(ab, ret, silent)
 		for res, res_def in ipairs(_M.resources_def) do
 			rname = res_def.short_name
 			cost = ab[rname] and util.getval(ab[rname], self, ab) or 0
+			cost = self:alterTalentCost(ab, rname, cost)
 			if cost ~= 0 then
 				trigger = true
 				cost = cost * (util.getval(res_def.cost_factor, self, ab) or 1)
@@ -5716,17 +5723,20 @@ function _M:getTalentFullDescription(t, addlevel, config, fake_mastery)
 			if not res_def.hidden_resource then
 				-- list resource cost
 				local cost = t[res_def.short_name] and util.getval(t[res_def.short_name], self, t) or 0
+				cost = self:alterTalentCost(t, res_def.short_name, cost)
 				if cost ~= 0 then
 					cost = cost * (util.getval(res_def.cost_factor, self, t) or 1)
 					d:add({"color",0x6f,0xff,0x83}, ("%s cost: "):format(res_def.name:capitalize()), res_def.color or {"color",0xff,0xa8,0xa8}, ""..math.round(cost, .1), true)
 				end
 				-- list sustain cost
 				cost = t[res_def.sustain_prop] and util.getval(t[res_def.sustain_prop], self, t) or 0
+				cost = self:alterTalentCost(t, res_def.sustain_prop, cost)
 				if cost ~= 0 then
 					d:add({"color",0x6f,0xff,0x83}, ("Sustain %s cost: "):format(res_def.name:lower()), res_def.color or {"color",0xff,0xa8,0xa8}, ""..math.round(cost, .1), true)
 				end
 				-- list drain cost
 				cost = t[res_def.drain_prop] and util.getval(t[res_def.drain_prop], self, t) or 0
+				cost = self:alterTalentCost(t, res_def.drain_prop, cost)
 				if cost ~= 0 then
 					if res_def.invert_values then
 						d:add({"color",0x6f,0xff,0x83}, ("%s %s: "):format(cost > 0 and "Generates" or "Removes", res_def.name:lower()), res_def.color or {"color",0xff,0xa8,0xa8}, ""..math.round(math.abs(cost), .1), true)