Create obsidian_glass.lua

obsidian_glass.lua

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+minetest.register_node(":default:obsidian_glass", {
+	description = "Obsidian Glass",
+	drawtype = "glasslike_framed_optional",
+	tiles = {"default_obsidian_glass.png", "default_obsidian_glass_detail.png"},
+	paramtype = "light",
+	is_ground_content = false,
+	sunlight_propagates = true,
+	sounds = default.node_sound_glass_defaults(),
+	groups = {cracky=3,oddly_breakable_by_hand=3},
+})