Liquid sources: Backface-cull sides and base. Remove unused special tiles

Fixes most z-fighting caused by underwater nodeboxes.
Special tiles were for 'new style water' (lowered water level) which was
removed a few years ago.

diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index c8020127f5b1d9fc67175ba1137fb533d61f0fab..4f186e1c0968c3aab129dd97f434ea98b3fe148a 100644 (file)
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -1944,6 +1944,7 @@ minetest.register_node("default:water_source", {
        tiles = {
                {
                        name = "default_water_source_animated.png",
+                       backface_culling = false,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
@@ -1951,18 +1952,15 @@ minetest.register_node("default:water_source", {
                                length = 2.0,
                        },
                },
-       },
-       special_tiles = {
-               -- New-style water source material (mostly unused)
                {
                        name = "default_water_source_animated.png",
+                       backface_culling = true,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
                                aspect_h = 16,
                                length = 2.0,
                        },
-                       backface_culling = false,
                },
        },
        alpha = 160,
@@ -2036,6 +2034,7 @@ minetest.register_node("default:river_water_source", {
        tiles = {
                {
                        name = "default_river_water_source_animated.png",
+                       backface_culling = false,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
@@ -2043,17 +2042,15 @@ minetest.register_node("default:river_water_source", {
                                length = 2.0,
                        },
                },
-       },
-       special_tiles = {
                {
                        name = "default_river_water_source_animated.png",
+                       backface_culling = true,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
                                aspect_h = 16,
                                length = 2.0,
                        },
-                       backface_culling = false,
                },
        },
        alpha = 160,
@@ -2135,6 +2132,7 @@ minetest.register_node("default:lava_source", {
        tiles = {
                {
                        name = "default_lava_source_animated.png",
+                       backface_culling = false,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
@@ -2142,18 +2140,15 @@ minetest.register_node("default:lava_source", {
                                length = 3.0,
                        },
                },
-       },
-       special_tiles = {
-               -- New-style lava source material (mostly unused)
                {
                        name = "default_lava_source_animated.png",
+                       backface_culling = true,
                        animation = {
                                type = "vertical_frames",
                                aspect_w = 16,
                                aspect_h = 16,
                                length = 3.0,
                        },
-                       backface_culling = false,
                },
        },
        paramtype = "light",