Added ConnectionCable

game/shaders/connection_cable.gdshader

@@ -0,0 +1,22 @@
+shader_type canvas_item;
+
+uniform float glow_interval : hint_range(0.0, 1.0, 0.00001) = 1.0;
+uniform float glow_radius : hint_range(0.0, 1.0, 0.00001) = 1.0;
+uniform float travel_time : hint_range(0.0, 100.0, 1) = 5.0;
+
+float get_alpha(vec2 uv, float offset) {
+	float dist = fract(mod(TIME, travel_time)/travel_time + offset);
+	float left = uv.x - glow_radius;
+	float right = uv.x + glow_radius;
+	return step(left, dist) * (1.0 - step(right, dist));
+}
+
+void fragment() {
+	float alpha = 0.0;
+	float offset = 0.0;
+	for (float offset = 0.0; offset <= 1.0; offset += glow_interval) {
+		alpha += get_alpha(UV, offset);
+	}
+	
+	COLOR.a = alpha;
+}

game/shaders/connection_cable.gdshader.uid

@@ -0,0 +1 @@
+uid://dbsrm43wcolg4