Spore storms / Weather attribute effects

core/src/mindustry/world/meta/Attribute.java

@@ -1,5 +1,7 @@
 package mindustry.world.meta;
 
+import mindustry.*;
+
 public enum Attribute{
     /** Heat of this block. Used for calculating output of thermal generators. */
     heat,
@@ -8,5 +10,15 @@ public enum Attribute{
     /** Water content of this block. Used for increasing water extractor yield. */
     water,
     /** Oil content of this block. Used for increasing oil extractor yield. */
-    oil
+    oil,
+    /** Light coverage. Negative values decrease solar panel efficiency. */
+    light;
+
+    public static final Attribute[] all = values();
+
+    /** @return the envrionmental value for this attribute. */
+    public float env(){
+        if(Vars.state == null) return 0;
+        return Vars.state.envAttrs.get(this);
+    }
 }