Sprites and Casting / Receiving Shadows

I am new to Unity; just picked it up this week; so please bear with me.

I have been playing around with this all day and I still can't seem to get a Sprite to RECEIVE a shadow. I figured the best way to approach this would be to go step by step on what I did to get to where I am then hopefully you guys can tell me what I missed.

1. I created a new scene in 2D mode.
2. I added a Sprite "character", Sprite "wall", 3D cube and a Spotlight into the scene then positioned them in a way that could test shadows:
3. I created my custom Shader, applied it to a custom Material then added that Material to both of my Sprite elements, Then using the Inspectors Debug mode I enabled both Receive and Cast Shadows for both Sprite Elements.
   Custom Shader:
   
   Code (CSharp):

   1. Shader "Sprites/Diffuse/Shadows"
   2. {
   3.     Properties
   4.     {
   5.         [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
   6.         _Color ("Tint", Color) = (1,1,1,1)
   7.         [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
   8.         _Cutoff ("Shadow alpha cutoff", Range(0,1)) = 0.5
   9.     }
   10.  
   11.     SubShader
   12.     {
   13.         Tags
   14.         {
   15.             "Queue"="Transparent"
   16.             "IgnoreProjector"="True"
   17.             "RenderType"="Transparent"
   18.             "PreviewType"="Plane"
   19.             "CanUseSpriteAtlas"="True"
   20.         }
   21.  
   22.         Cull Off
   23.         Lighting Off
   24.         ZWrite Off
   25.         Blend One OneMinusSrcAlpha
   26.  
   27.         CGPROGRAM
   28.         #pragma surface surf Lambert vertex:vert nofog keepalpha addshadow
   29.         #pragma multi_compile _ PIXELSNAP_ON
   30.  
   31.         sampler2D _MainTex;
   32.         fixed4 _Color;
   33.  
   34.         struct Input
   35.         {
   36.             float2 uv_MainTex;
   37.             fixed4 color;
   38.         };
   39.        
   40.         void vert (inout appdata_full v, out Input o)
   41.         {
   42.             #if defined(PIXELSNAP_ON)
   43.             v.vertex = UnityPixelSnap (v.vertex);
   44.             #endif
   45.            
   46.             UNITY_INITIALIZE_OUTPUT(Input, o);
   47.             o.color = v.color * _Color;
   48.         }
   49.  
   50.         void surf (Input IN, inout SurfaceOutput o)
   51.         {
   52.             fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * IN.color;
   53.             o.Albedo = c.rgb * c.a;
   54.             o.Alpha = c.a;
   55.         }
   56.         ENDCG
   57.     }
   58.  
   59. Fallback "Transparent/Cutout/VertexLit"
   60. }
   61.  

As you can see the Sprite "character" cast a shadow, the 3D Cube receives it but the Sprite "wall" does not. Any idea as to why?

 

Sorry for the old bump, but I'd also like to know this. I've got sprites set to cast and receive shadows from a spotlight, but it seems like only quads receive shadows cast from the sprites. Both sprites have a script attached to them to force them to cast and receive shadows, and I've even tried doing it through the debug menu. I've spent several hours researching, but haven't found a way to make this work.

 

Anybody? This would really be helpful, many other shaders on google don`t work....

 

up too ^^

 

I got the solution, the Sprite should have Default-material for it to receive shadows. So if you have correct, working casting shadow shader, it will work.