1 files changed, 64 insertions, 0 deletions
diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..a2b8328
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,64 @@
+autotool = {}
+
+local function check_tool(stack, node_groups, old_best_time)
+	local toolcaps = stack:get_tool_capabilities()
+	if not toolcaps then return end
+	local best_time = old_best_time
+	for group, groupdef in pairs(toolcaps.groupcaps) do
+		local level = node_groups[group]
+		if level then
+			local this_time = groupdef.times[level]
+			if this_time < best_time then
+				best_time = this_time
+			end
+		end
+	end
+	return best_time < old_best_time, best_time
+end
+
+local function find_best_tool(nodename)
+	local player = minetest.localplayer
+	local inventory = minetest.get_inventory("current_player")
+	local node_groups = minetest.get_node_def(nodename).groups
+	local new_index = player:get_wield_index()
+	local is_better, best_time = false, math.huge
+	is_better, best_time = check_tool(player:get_wielded_item(), node_groups, best_time)
+	is_better, best_time = check_tool(inventory.hand[1], node_groups, best_time)
+	for index, stack in ipairs(inventory.main) do
+		is_better, best_time = check_tool(stack, node_groups, best_time)
+		if is_better then
+			new_index = index
+		end
+	end
+	return new_index
+end
+
+function autotool.select_best_tool(nodename)
+	minetest.localplayer:set_wield_index(find_best_tool(nodename))
+end
+
+local new_index, old_index, pointed_pos
+
+minetest.register_on_punchnode(function(pos, node)
+	if minetest.settings:get_bool("autotool") then
+		pointed_pos = pos
+		old_index = old_index or minetest.localplayer:get_wield_index()
+		new_index = find_best_tool(node.name)
+	end
+end)
+
+minetest.register_globalstep(function()
+	local player = minetest.localplayer
+	if not new_index then return end
+	if minetest.settings:get_bool("autotool") then
+		local pt = minetest.get_pointed_thing()
+		if pt and pt.type == "node" and vector.equals(minetest.get_pointed_thing_position(pt), pointed_pos) and player:get_control().dig then
+			player:set_wield_index(new_index)
+			return
+		end
+	end
+	player:set_wield_index(old_index)
+	new_index, old_index, pointed_pos = nil
+end)
+
+minetest.register_cheat("AutoTool", "Inventory", "autotool")