shaders moved to subdir; console click on the actor to type its id in

assets/shaders/reflect.frag

@@ -0,0 +1,9 @@
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+
+void main(void) {
+    vec4 color = texture2D(u_texture, vec2(v_texCoords.x, 1.0 - v_texCoords.y));
+    vec4 alphamul = vec4(1.0, 1.0, 1.0, 0.5 * (1.0 - v_texCoords.y));
+    gl_FragColor = color * alphamul;
+}