added moving backround

Nodes/game.gdshader

@@ -0,0 +1,13 @@
+shader_type spatial;
+render_mode unshaded;
+
+uniform vec2 direction_and_speed = vec2(0.25, 0.00);
+uniform vec2 scale = vec2(1.0);
+uniform bool flip = false;
+uniform sampler2D albedo;
+
+void fragment() {
+	vec2 uv = UV * scale - direction_and_speed * TIME;
+	if (flip) { uv = 1.0 - uv; }
+	ALBEDO = texture(albedo, uv).rgb;
+}