optimize: add optimization script to remove water drops, improve ClientObjectRefs

clientmods/mods.conf

@@ -40,3 +40,4 @@ load_mod_automt = true
 load_mod_nlist = true
 load_mod_kamikaze = true
 load_mod_muse = true
+load_mod_optimize = true

clientmods/optimize/init.lua

@@ -0,0 +1,28 @@
+-- CC0/Unlicense Emilia 2020
+
+-- Optimizes stuff.
+
+-- texture is a prefix
+local function remove_drops(texture)
+    local obj = minetest.localplayer.get_nearby_objects(10000)
+
+    for i, v in ipairs(obj) do
+        -- CAOs with water/lava textures are droplets
+        if v:get_item_textures():find("^" .. texture) then
+            v:set_visible(false)
+            v:remove_from_scene(true)
+        end
+    end
+end
+
+local epoch = 0
+
+minetest.register_globalstep(function()
+    if os.clock() > epoch + 1 then
+        if minetest.settings:get_bool("optimize_water_drops") then
+            remove_drops("default_water_source")
+        end
+
+        epoch = os.clock()
+    end
+end)

clientmods/optimize/settingtypes.txt

@@ -0,0 +1 @@
+optimize_water_drops (Hide water drops, improves framerates in watery areas) bool false

src/script/lua_api/l_clientobject.cpp

@@ -110,6 +110,22 @@ int ClientObjectRef::l_get_item_textures(lua_State *L)
     return 1;
 }
 
+int ClientObjectRef::l_set_visible(lua_State *L)
+{
+    ClientObjectRef *ref = checkobject(L, 1);
+    GenericCAO *gcao = get_generic_cao(ref, L);
+    gcao->setVisible(readParam<bool>(L, -1));
+    return 0;
+}
+
+int ClientObjectRef::l_remove_from_scene(lua_State *L)
+{
+    ClientObjectRef *ref = checkobject(L, 1);
+    GenericCAO *gcao = get_generic_cao(ref, L);
+    gcao->removeFromScene(readParam<bool>(L, -1));
+    return 0;
+}
+
 int ClientObjectRef::l_get_max_hp(lua_State *L)
 {
     ClientObjectRef *ref = checkobject(L, 1);
@@ -178,5 +194,7 @@ luaL_Reg ClientObjectRef::methods[] = {
     luamethod(ClientObjectRef, get_nametag),
     luamethod(ClientObjectRef, get_item_textures),
     luamethod(ClientObjectRef, get_max_hp),
+    luamethod(ClientObjectRef, set_visible),
+    luamethod(ClientObjectRef, remove_from_scene),
     {0, 0}
 };

src/script/lua_api/l_clientobject.h

@@ -57,4 +57,10 @@ private:
 
     // get_hp(self)
     static int l_get_max_hp(lua_State *L);
+
+    // set_visible(self, visible)
+    static int l_set_visible(lua_State *L);
+
+    // remove_from_scene(self, permanent)
+    static int l_remove_from_scene(lua_State *L);
 };