Add glTF animation support

games/devtest/mods/gltf/init.lua

@@ -27,8 +27,34 @@ do
 		},
 	})
 end
+
 register_entity("snow_man", {"gltf_snow_man.png"})
 register_entity("spider", {"gltf_spider.png"})
+
+minetest.register_entity("gltf:spider_animated", {
+	initial_properties = {
+		visual = "mesh",
+		mesh = "gltf_spider_animated.gltf",
+		textures = {"gltf_spider.png"},
+	},
+	on_activate = function(self)
+		self.object:set_animation({x = 0, y = 140}, 1)
+	end
+})
+
+minetest.register_entity("gltf:simple_skin", {
+	initial_properties = {
+		visual = "mesh",
+		visual_size = vector.new(5, 5, 5),
+		mesh = "gltf_simple_skin.gltf",
+		textures = {},
+		backface_culling = false
+	},
+	on_activate = function(self)
+		self.object:set_animation({x = 0, y = 5.5}, 1)
+	end
+})
+
 -- Note: Model has an animation, but we can use it as a static test nevertheless
 -- The claws rendering incorrectly from one side is expected behavior:
 -- They use an unsupported double-sided material.