WIP bases with emissive lighting on Serpulo

core/src/mindustry/maps/generators/PlanetGenerator.java

@@ -2,6 +2,7 @@ package mindustry.maps.generators;
 
 import arc.*;
 import arc.graphics.g2d.*;
+import arc.math.*;
 import arc.math.geom.*;
 import arc.struct.*;
 import arc.struct.ObjectIntMap.*;
@@ -25,6 +26,10 @@ public abstract class PlanetGenerator extends BasicGenerator implements HexMeshe
 
     protected @Nullable Sector sector;
 
+    public static float packAlpha(float albedo, float emissive){
+        return emissive > 0 ? 1f + 1f/255f - 0.5f * Mathf.clamp(emissive) : Mathf.clamp(albedo) * 0.5f;
+    }
+
     /** Should generate sector bases for a planet. */
     public void generateSector(Sector sector){