register new node schema recipes when nodes, recipes, or shapes are added, instead of after mods load

stairsplus/api/node.lua

@@ -236,6 +236,12 @@ function api.register_single(node, shape, overrides, meta)
 	shapes[shape] = true
 	api.shapes_by_node[node] = shapes
 
+	api.node_by_shaped_node[shaped_name] = node
+	api.shape_by_shaped_node[shaped_name] = shape
+
+	api.node_by_shaped_node[node] = node
+	api.shape_by_shaped_node[node] = "node"
+
 	table.insert(api.registered_singles, {node, shaped_name})
 
 	for _, func in ipairs(api.registered_on_register_singles) do
@@ -315,24 +321,6 @@ function api.get_micronode(node)
 	return api.get_schema_recipe_item(node, "micro_8")
 end
 
--- create some hashes for quickly looking things up at run-time (i.e. the circular saw)
--- register schema crafts once, after everything has been registered. otherwise, it's not clear when to do this
-minetest.register_on_mods_loaded(function()
-	stairsplus.log("info", "registering schema crafts")
-	for node, shapes in pairs(api.shapes_by_node) do
-		for shape in pairs(shapes) do
-			local shaped_node = api.format_name(node, shape)
-			api.node_by_shaped_node[shaped_node] = node
-			api.shape_by_shaped_node[shaped_node] = shape
-		end
-
-		api.node_by_shaped_node[node] = node
-		api.shape_by_shaped_node[node] = "node"
-
-		api.register_schema_crafts_for_node(node)
-	end
-end)
-
 function api.get_node_of_shaped_node(shaped_node)
 	return api.node_by_shaped_node[shaped_node]
 end

stairsplus/api/recipe.lua

@@ -4,6 +4,8 @@ local api = stairsplus.api
 api.registered_recipe_schemas = {}
 api.registered_on_register_craft_schemas = {}
 
+local registered_schemas_by_node = {}
+
 local function is_valid_output(item, shapes)
 	local item_name = item:match("^([^ ]+)")
 
@@ -57,26 +59,6 @@ local function verify_schema(schema)
 	end
 end
 
-function api.register_on_register_craft_schema(func)
-	table.insert(api.registered_on_register_craft_schemas, func)
-end
-
-function api.register_craft_schema(schema)
-	local problems = verify_schema(schema)
-
-	if problems then
-		error(problems)
-	end
-
-	stairsplus.log("info", "registering craft schema %s", minetest.write_json(schema))
-
-	table.insert(api.registered_recipe_schemas, schema)
-
-	for _, func in ipairs(api.registered_on_register_craft_schemas) do
-		func(schema)
-	end
-end
-
 local function has_the_right_shapes(schema, shapes)
 	if not is_valid_output(schema.output, shapes) then
 		return false
@@ -113,6 +95,8 @@ local function has_the_right_shapes(schema, shapes)
 end
 
 local function register_for_schema(node, schema)
+	stairsplus.log("verbose", "using schema %s w/ node %s", minetest.write_json(schema), node)
+
 	local recipe = table.copy(schema)
 
 	recipe.output = api.get_schema_recipe_item(node, recipe.output)
@@ -143,17 +127,53 @@ local function register_for_schema(node, schema)
 	minetest.register_craft(recipe)
 end
 
-function api.register_schema_crafts_for_node(node)
-	stairsplus.log("info", "registering schema crafts for %q", node)
-	local shapes = api.get_shapes_hash(node)
-	for _, schema in ipairs(api.registered_recipe_schemas) do
-		if has_the_right_shapes(schema, shapes) then
-			stairsplus.log("verbose", "using schema %s", minetest.write_json(schema))
+function api.register_on_register_craft_schema(func)
+	table.insert(api.registered_on_register_craft_schemas, func)
+end
+
+function api.register_craft_schema(schema)
+	local problems = verify_schema(schema)
+
+	if problems then
+		error(problems)
+	end
+
+	stairsplus.log("info", "registering craft schema %s", minetest.write_json(schema))
+
+	table.insert(api.registered_recipe_schemas, schema)
+
+	for node, shapes in pairs(api.shapes_by_node) do
+		local registered_schemas = registered_schemas_by_node[node] or {}
+
+		if has_the_right_shapes(schema, shapes) and not registered_schemas[schema] then
 			register_for_schema(node, schema)
+			registered_schemas[schema] = true
 		end
+
+		registered_schemas_by_node[node] = registered_schemas
+	end
+
+	for _, func in ipairs(api.registered_on_register_craft_schemas) do
+		func(schema)
 	end
 end
 
+function api.register_schema_crafts_for_node(node)
+	local registered_schemas = registered_schemas_by_node[node] or {}
+
+	local shapes = api.get_shapes_hash(node)
+	for _, schema in ipairs(api.registered_recipe_schemas) do
+		if has_the_right_shapes(schema, shapes) and not registered_schemas[schema] then
+			register_for_schema(node, schema)
+			registered_schemas[schema] = true
+		end
+	end
+
+	registered_schemas_by_node[node] = registered_schemas
+end
+
+api.register_on_register_single(api.register_schema_crafts_for_node)
+
 local function shapes_match(a, b)
 	local a_shapes = api.get_shapes(a)
 	local b_shapes = api.get_shapes(b)

stairsplus/api/shape.lua

@@ -1,8 +1,13 @@
 local api = stairsplus.api
 
+api.registered_on_register_shapes = {}
 api.registered_shapes = {}
 api.shapes_by_group = {}
 
+function api.register_on_register_shape(func)
+	table.insert(api.registered_on_register_shapes, func)
+end
+
 function api.register_shape(name, def)
 	stairsplus.log("info", "registering shape %q", name)
 	def.shape_groups = def.shape_groups or {}
@@ -13,6 +18,10 @@ function api.register_shape(name, def)
 		table.insert(shapes, name)
 		api.shapes_by_group[group] = shapes
 	end
+
+	for _, func in ipairs(api.registered_on_register_shapes) do
+		func(name, def)
+	end
 end
 
 function api.register_shape_group(shape_group, shapes)

stairsplus/util.lua

@@ -7,7 +7,7 @@ stairsplus.util = {
 	end,
 
 	table_is_empty = function(t)
-		return not next(t)
+		return next(t) == nil
 	end,
 
 	table_sort_keys = function(t, sort_function)
@@ -54,21 +54,6 @@ stairsplus.util = {
 		return true
 	end,
 
-	check_call = function(func)
-		-- wrap a function w/ logic to avoid crashing the game
-		local f = function(...)
-			local status, out = pcall(func, ...)
-			if status then
-				return out
-			else
-				local message = ("Error (func): %s %s"):format(out, dump({...}))
-				stairsplus.log("error", message)
-				error(message)
-			end
-		end
-		return f
-	end,
-
 	get_location_string = function(inv)
 		local location = inv:get_location()
 		if location.type == "node" then