do not damage for 0

git-svn-id: http://svn.net-core.org/repos/t-engine4@496 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/class/interface/Combat.lua

@@ -265,12 +265,16 @@ function _M:attackTargetWith(target, weapon, damtype, mult)
 
 	-- Melee project
 	if hitted then for typ, dam in pairs(self.melee_project) do
-		DamageType:get(typ).projector(self, target.x, target.y, typ, dam)
+		if dam > 0 then
+			DamageType:get(typ).projector(self, target.x, target.y, typ, dam)
+		end
 	end end
 
 	-- Reactive target on hit damage
 	if hitted then for typ, dam in pairs(target.on_melee_hit) do
-		DamageType:get(typ).projector(target, self.x, self.y, typ, dam)
+		if dam > 0 then
+			DamageType:get(typ).projector(target, self.x, self.y, typ, dam)
+		end
 	end end
 
 	-- Riposte!