Emissive planet system upgrades / Indexed vertices for planets

core/src/mindustry/graphics/Shaders.java

@@ -109,6 +109,7 @@ public class Shaders{
         public Color ambientColor = Color.white.cpy();
         public Vec3 camDir = new Vec3();
         public Vec3 camPos = new Vec3();
+        public boolean emissive;
         public Planet planet;
 
         public PlanetShader(){
@@ -123,6 +124,7 @@ public class Shaders{
             setUniformf("u_ambientColor", ambientColor.r, ambientColor.g, ambientColor.b);
             setUniformf("u_camdir", camDir);
             setUniformf("u_campos", renderer.planets.cam.position);
+            setUniformf("u_emissive", emissive ? 1f : 0f);
         }
     }