Untested rank system / 'Fixed' junction speed / Balancing

core/src/io/anuke/mindustry/game/Stats.java

@@ -1,8 +1,12 @@
 package io.anuke.mindustry.game;
 
 import io.anuke.annotations.Annotations.Serialize;
+import io.anuke.arc.collection.Array;
 import io.anuke.arc.collection.ObjectIntMap;
+import io.anuke.arc.math.Mathf;
 import io.anuke.mindustry.type.Item;
+import io.anuke.mindustry.type.ItemType;
+import io.anuke.mindustry.type.Zone;
 
 @Serialize
 public class Stats{
@@ -21,7 +25,49 @@ public class Stats{
     /**Friendly buildings destroyed.*/
     public int buildingsDestroyed;
 
-    public Rank calculateRank(boolean launched){
-        return Rank.F;
+    public RankResult calculateRank(Zone zone, Rules rules, boolean launched){
+        float score = 0;
+
+        //each new launch period adds onto the rank 1.5 'points'
+        if(wavesLasted >= zone.conditionWave){
+           score += (float)((zone.conditionWave - wavesLasted) / zone.launchPeriod + 1) * 1.5f;
+        }
+
+        //building more stuff gives a better score slightly
+        score += (buildingsBuilt - buildingsDeconstructed)*0.001f;
+        //destroyed buildings penalize score
+        score -= buildingsDestroyed * 0.003f;
+
+        int capacity = zone.generator.coreBlock.itemCapacity;
+
+        //weigh used fractions of
+        float frac = 0f;
+        Array<Item> obtainable = Array.with(zone.resources).select(i -> i.type == ItemType.material);
+        for(Item item : obtainable){
+            frac += Mathf.clamp((float)itemsDelivered.get(item, 0) / capacity) / (float)obtainable.size;
+        }
+
+        score += frac*3f;
+
+        if(!launched){
+            score *= 0.5f;
+        }
+
+        int rankIndex = Mathf.clamp((int)score, 0, Rank.values().length-1);
+        Rank rank = Rank.values()[rankIndex];
+        String sign = Math.abs((rankIndex + 0.5f) - score) < 0.2f || rank.name().contains("S") ? "" : (rankIndex + 0.5f) < score ? "-" : "+";
+
+        return new RankResult(rank, sign);
+    }
+
+    public static class RankResult{
+        public final Rank rank;
+        /**+ or -*/
+        public final String modifier;
+
+        public RankResult(Rank rank, String modifier){
+            this.rank = rank;
+            this.modifier = modifier;
+        }
     }
 }