Predefined firework explosion size

mods/HELP/mcl_tt/snippets_mcl.lua

@@ -202,3 +202,19 @@ tt.register_snippet(function(itemstring, _, itemstack)
 
 	return s:trim()
 end)
+tt.register_snippet(function(itemstring, _, itemstack)
+	if not itemstack then return end
+	local def = itemstack:get_definition()
+	if not def then return end
+
+	if not def._vl_fireworks_star then return end
+
+	local s = ""
+	local meta = itemstack:get_meta()
+	local effect = meta:get("vl_fireworks:star_effect") or core.serialize({fn="generic"})
+	if effect then
+		s = vl_fireworks.star_tt(core.deserialize(effect))
+	end
+
+	return s
+end)

mods/ITEMS/vl_fireworks/crafting.lua

@@ -4,6 +4,37 @@ core.register_craft({ -- temporary
 	output = "vl_fireworks:firework_star",
 	recipe = {"mcl_mobitems:gunpowder", "mcl_core:clay_lump"}
 })
+core.register_craft({ -- temporary
+	type = "shapeless",
+	output = "vl_fireworks:firework_star",
+	recipe = {"mcl_mobitems:gunpowder", "mcl_core:clay_lump", "mcl_fire:fire_charge"}
+})
+core.register_craft({ -- temporary
+	type = "shapeless",
+	output = "vl_fireworks:firework_star",
+	recipe = {"mcl_mobitems:gunpowder", "mcl_core:clay_lump", "mcl_end:crystal"}
+})
+
+local function craft_star(itemstack, player, old_grid)
+	if itemstack:get_name() ~= "vl_fireworks:firework_star" then return end
+	local size = 1
+
+	-- analyze the recipe used
+	for _, item in pairs(old_grid) do
+		if item:get_name() == "mcl_fire:fire_charge" then size = 2 end
+		if item:get_name() == "mcl_end:crystal" then size = 3 end
+	end
+
+	local effect = {
+		fn = "generic",
+		size = size
+	}
+	itemstack:get_meta():set_string("vl_fireworks:star_effect", core.serialize(effect))
+	tt.reload_itemstack_description(itemstack)
+	return itemstack
+end
+core.register_craft_predict(craft_star)
+core.register_on_craft(craft_star)
 
 -- Firework Rocket
 local function register_firework_crafts()

mods/ITEMS/vl_fireworks/rockets.lua

@@ -9,8 +9,9 @@ local function explode(self, pos, stars)
 	mcl_mobs.mob_class.safe_boom(self, pos, 1)
 	if not stars then return end
 	for _, effect in pairs(stars) do
+		if type(effect) == "string" then effect = core.deserialize(effect) end
 		if effect.fn == "generic" then
-			vl_fireworks.generic_particle_explosion(pos)
+			vl_fireworks.generic_particle_explosion(pos, effect.size or 1)
 		end
 		-- TODO implement other handlers
 	end
@@ -185,10 +186,8 @@ local firework_def = {
 		local retval = S("Duration:") .. " " .. duration
 
 		for _, effect in pairs(stars) do
-			retval = retval .. "\n\n"
-			if effect.fn == "generic" then
-				retval = retval .. S("Generic Firework Star")
-			end
+			if type(effect) == "string" then effect = core.deserialize(effect) end
+			retval = retval .. "\n\n" .. vl_fireworks.star_tt(effect)
 		end
 
 		return retval

mods/ITEMS/vl_fireworks/star.lua

@@ -7,7 +7,19 @@ minetest.register_craftitem("vl_fireworks:firework_star", {
 	inventory_image = "vl_fireworks_star.png",
 	groups = { craftitem = 1 },
 	stack_max = 64,
+
+	_vl_fireworks_star = true
 })
 
--- TODO tt snippets
+function vl_fireworks.star_tt(effect)
+	local s = ""
+	if effect.fn == "generic" then
+		s = S("Generic Firework Star")
+	end
+	if effect.size then
+		s = s .. "\nSize: " .. effect.size
+	end
+	return s:trim()
+end
+
 -- TODO image handlers