Improved potion descriptions

* added support for effect descriptions
* added descriptions for some effects
* fixed a crash

mods/HELP/mcl_tt/snippets_mcl.lua

@@ -135,35 +135,37 @@ tt.register_snippet(function(itemstring, _, itemstack)
 	local plus = meta:get_int("mcl_potions:potion_plus")
 	if def._dynamic_tt then s = s.. def._dynamic_tt(potency+1).. "\n" end
 	local effects = def._effect_list
-	local effect
+	if effects then
-	local dur
+		local effect
-	local timestamp
+		local dur
-	local ef_level
+		local timestamp
-	local roman_lvl
+		local ef_level
-	local factor
+		local roman_lvl
-	local ef_tt
+		local factor
-	for name, details in pairs(effects) do
+		local ef_tt
-		effect = mcl_potions.registered_effects[name]
+		for name, details in pairs(effects) do
-		if details.dur_variable then
+			effect = mcl_potions.registered_effects[name]
-			dur = details.dur * math.pow(mcl_potions.PLUS_FACTOR, plus)
+			if details.dur_variable then
-			if potency > 0 and details.uses_level then
+				dur = details.dur * math.pow(mcl_potions.PLUS_FACTOR, plus)
-				dur = dur / math.pow(mcl_potions.POTENT_FACTOR, potency)
+				if potency > 0 and details.uses_level then
+					dur = dur / math.pow(mcl_potions.POTENT_FACTOR, potency)
+				end
+			else
+				dur = details.dur
 			end
-		else
+			timestamp = math.floor(dur/60)..string.format(":%02d",math.floor(dur % 60))
-			dur = details.dur
+			if details.uses_level then
+				ef_level = details.level + details.level_scaling * (potency)
+			else
+				ef_level = details.level
+			end
+			if ef_level > 1 then roman_lvl = " ".. mcl_util.to_roman(ef_level)
+			else roman_lvl = "" end
+			s = s.. effect.description.. roman_lvl.. " (".. timestamp.. ")\n"
+			if effect.uses_factor then factor = effect.level_to_factor(ef_level) end
+			if effect.get_tt then ef_tt = minetest.colorize("grey", effect.get_tt(factor)) else ef_tt = "" end
+			if ef_tt ~= "" then s = s.. ef_tt.. "\n" end
 		end
-		timestamp = math.floor(dur/60)..string.format(":%02d",math.floor(dur % 60))
-		if details.uses_level then
-			ef_level = details.level + details.level_scaling * (potency)
-		else
-			ef_level = details.level
-		end
-		if ef_level > 1 then roman_lvl = " ".. mcl_util.to_roman(ef_level)
-		else roman_lvl = "" end
-		s = s.. effect.description.. roman_lvl.. " (".. timestamp.. ")\n"
-		if effect.uses_factor then factor = effect.level_to_factor(ef_level) end
-		if effect.get_tt then ef_tt = effect.get_tt(factor) else ef_tt = "" end
-		if ef_tt ~= "" then s = s.. ef_tt.. "\n" end
 	end
 	return s:trim()
 end)

mods/ITEMS/mcl_potions/functions.lua

@@ -165,6 +165,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "poison",
 	description = S("Poison"),
+	get_tt = function(factor)
+		return S("-1 HP / @1 s", factor)
+	end,
 	res_condition = function(object)
 		local entity = object:get_luaentity()
 		return (entity and (entity.harmed_by_heal or string.find(entity.name, "spider")))
@@ -184,6 +187,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "regeneration",
 	description = S("Regeneration"),
+	get_tt = function(factor)
+		return S("+1 HP / @1 s", factor)
+	end,
 	res_condition = function(object)
 		local entity = object:get_luaentity()
 		return (entity and entity.harmed_by_heal)
@@ -238,6 +244,10 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "leaping",
 	description = S("Leaping"),
+	get_tt = function(factor)
+		if factor > 0 then return S("+@1% jumping power", math.floor(factor*100)) end
+		return S("-@1% jumping power", math.floor(-factor*100))
+	end,
 	res_condition = function(object)
 		return (not object:is_player())
 	end,
@@ -256,6 +266,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "swiftness",
 	description = S("Swiftness"),
+	get_tt = function(factor)
+		return S("+@1% running speed", math.floor(factor*100))
+	end,
 	res_condition = function(object)
 		return (not object:is_player())
 	end,
@@ -274,6 +287,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "slowness",
 	description = S("Slowness"),
+	get_tt = function(factor)
+		return S("-@1% running speed", math.floor(factor*100))
+	end,
 	res_condition = function(object)
 		return (not object:is_player())
 	end,
@@ -331,6 +347,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "withering",
 	description = S("Withering"),
+	get_tt = function(factor)
+		return S("-1 HP / @1 s, can kill", factor)
+	end,
 	res_condition = function(object)
 		local entity = object:get_luaentity()
 		return (entity and string.find(entity.name, "wither"))