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-rw-r--r--builtin/game/register.lua15
-rw-r--r--doc/lua_api.txt4
2 files changed, 19 insertions, 0 deletions
diff --git a/builtin/game/register.lua b/builtin/game/register.lua
index 87d1c5659..ad16651f8 100644
--- a/builtin/game/register.lua
+++ b/builtin/game/register.lua
@@ -505,6 +505,19 @@ local function make_registration_wrap(reg_fn_name, clear_fn_name)
return list
end
+local function make_wrap_deregistration(reg_fn, clear_fn, list)
+ local unregister = function (unregistered_key)
+ local temporary_list = table.copy(list)
+ clear_fn()
+ for k,v in pairs(temporary_list) do
+ if unregistered_key ~= k then
+ reg_fn(v)
+ end
+ end
+ end
+ return unregister
+end
+
core.registered_on_player_hpchanges = { modifiers = { }, loggers = { } }
function core.registered_on_player_hpchange(player, hp_change)
@@ -543,6 +556,8 @@ core.registered_biomes = make_registration_wrap("register_biome", "cle
core.registered_ores = make_registration_wrap("register_ore", "clear_registered_ores")
core.registered_decorations = make_registration_wrap("register_decoration", "clear_registered_decorations")
+core.unregister_biome = make_wrap_deregistration(core.register_biome, core.clear_registered_biomes, core.registered_biomes)
+
core.registered_on_chat_messages, core.register_on_chat_message = make_registration()
core.registered_globalsteps, core.register_globalstep = make_registration()
core.registered_playerevents, core.register_playerevent = make_registration()
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index d8e58f2a8..b62fac67d 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -715,6 +715,10 @@ the global `minetest.registered_*` tables.
* added to `minetest.registered_biome` with the key of `biome.name`
* if `biome.name` is nil, the key is the returned ID
+* `minetest.unregister_biome(name)`
+ * Unregisters the biome name from engine, and deletes the entry with key
+ * `name` from `minetest.registered_biome`
+
* `minetest.register_ore(ore definition)`
* returns an integer uniquely identifying the registered ore
* added to `minetest.registered_ores` with the key of `ore.name`