Initial commit

builtin/client/register.lua

@@ -0,0 +1,83 @@
+core.callback_origins = {}
+
+local getinfo = debug.getinfo
+debug.getinfo = nil
+
+--- Runs given callbacks.
+--
+-- Note: this function is also called from C++
+-- @tparam table  callbacks a table with registered callbacks, like `core.registered_on_*`
+-- @tparam number mode      a RunCallbacksMode, as defined in src/script/common/c_internal.h
+-- @param         ...       arguments for the callback
+-- @return depends on mode
+function core.run_callbacks(callbacks, mode, ...)
+	assert(type(callbacks) == "table")
+	local cb_len = #callbacks
+	if cb_len == 0 then
+		if mode == 2 or mode == 3 then
+			return true
+		elseif mode == 4 or mode == 5 then
+			return false
+		end
+	end
+	local ret
+	for i = 1, cb_len do
+		local cb_ret = callbacks[i](...)
+
+		if mode == 0 and i == 1 or mode == 1 and i == cb_len then
+			ret = cb_ret
+		elseif mode == 2 then
+			if not cb_ret or i == 1 then
+				ret = cb_ret
+			end
+		elseif mode == 3 then
+			if cb_ret then
+				return cb_ret
+			end
+			ret = cb_ret
+		elseif mode == 4 then
+			if (cb_ret and not ret) or i == 1 then
+				ret = cb_ret
+			end
+		elseif mode == 5 and cb_ret then
+			return cb_ret
+		end
+	end
+	return ret
+end
+
+--
+-- Callback registration
+--
+
+local function make_registration()
+	local t = {}
+	local registerfunc = function(func)
+		t[#t + 1] = func
+		core.callback_origins[func] = {
+			mod = core.get_current_modname() or "??",
+			name = getinfo(1, "n").name or "??"
+		}
+		--local origin = core.callback_origins[func]
+		--print(origin.name .. ": " .. origin.mod .. " registering cbk " .. tostring(func))
+	end
+	return t, registerfunc
+end
+
+core.registered_globalsteps, core.register_globalstep = make_registration()
+core.registered_on_mods_loaded, core.register_on_mods_loaded = make_registration()
+core.registered_on_shutdown, core.register_on_shutdown = make_registration()
+core.registered_on_receiving_chat_message, core.register_on_receiving_chat_message = make_registration()
+core.registered_on_sending_chat_message, core.register_on_sending_chat_message = make_registration()
+core.registered_on_chatcommand, core.register_on_chatcommand = make_registration()
+core.registered_on_death, core.register_on_death = make_registration()
+core.registered_on_hp_modification, core.register_on_hp_modification = make_registration()
+core.registered_on_damage_taken, core.register_on_damage_taken = make_registration()
+core.registered_on_formspec_input, core.register_on_formspec_input = make_registration()
+core.registered_on_dignode, core.register_on_dignode = make_registration()
+core.registered_on_punchnode, core.register_on_punchnode = make_registration()
+core.registered_on_placenode, core.register_on_placenode = make_registration()
+core.registered_on_item_use, core.register_on_item_use = make_registration()
+core.registered_on_modchannel_message, core.register_on_modchannel_message = make_registration()
+core.registered_on_modchannel_signal, core.register_on_modchannel_signal = make_registration()
+core.registered_on_inventory_open, core.register_on_inventory_open = make_registration()