chore: Optimise allocation on PlayerSprite

src/main/java/fr/quatrevieux/araknemu/game/account/CharacterAccessories.java

@@ -47,7 +47,7 @@ public CharacterAccessories(Collection<PlayerItem> items) {
     public Accessory get(AccessoryType type) {
         final Accessory accessory = accessories.get(type);
 
-        return accessory != null ? accessory : new NullAccessory(type);
+        return accessory != null ? accessory : NullAccessory.from(type);
     }
 
     private void set(Accessory accessory) {

src/main/java/fr/quatrevieux/araknemu/game/exploration/sprite/PlayerSprite.java

@@ -20,8 +20,13 @@
 package fr.quatrevieux.araknemu.game.exploration.sprite;
 
 import fr.arakne.utils.maps.constant.Direction;
+import fr.arakne.utils.value.Colors;
+import fr.arakne.utils.value.constant.Gender;
+import fr.arakne.utils.value.constant.Race;
 import fr.quatrevieux.araknemu.game.exploration.ExplorationPlayer;
+import fr.quatrevieux.araknemu.game.player.sprite.SpriteSize;
 import fr.quatrevieux.araknemu.game.world.creature.Sprite;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * Sprite for exploration player
@@ -33,6 +38,17 @@
 public final class PlayerSprite implements Sprite {
     private final ExplorationPlayer exploration;
 
+    /**
+     * Cached constant part of the sprite
+     * The integrity of this field is ensured by the constantPartHash field
+     */
+    private @Nullable String constantPart = null;
+
+    /**
+     * Store a hash code of the last computed constant part
+     */
+    private int constPartHash = 0;
+
     public PlayerSprite(ExplorationPlayer exploration) {
         this.exploration = exploration;
     }
@@ -75,19 +91,56 @@ public String toString() {
         return
             cell() + ";" +
             orientation().ordinal() + ";" +
-            "0;" + // bonus
-            id() + ";" +
-            name() + ";" +
-            exploration.player().spriteInfo().race().ordinal() + ";" + // @todo title
-            gfxId() + "^" + exploration.player().spriteInfo().size() + ";" +
-            exploration.player().spriteInfo().gender().ordinal() + ";" +
+            constantPart()
+        ;
+    }
+
+    /**
+     * Get the part of the sprite which change rarely
+     * This value is cached to avoid recomputation and allocation
+     */
+    private String constantPart() {
+        final int id = id();
+        final String name = name();
+        final Race race = exploration.player().spriteInfo().race();
+        final int gfxId = gfxId();
+        final SpriteSize size = exploration.player().spriteInfo().size();
+        final Gender gender = exploration.player().spriteInfo().gender();
+        final Colors colors = exploration.player().spriteInfo().colors();
+        final String accessories = exploration.player().spriteInfo().accessories().toString();
+        final int restrictions = exploration.restrictions().toInt();
+        final String lastResult = constantPart;
+
+        int newHash = 17 * id;
+
+        newHash = 31 * newHash + name.hashCode();
+        newHash = 31 * newHash + race.hashCode();
+        newHash = 31 * newHash + gfxId;
+        newHash = 31 * newHash + size.hashCode();
+        newHash = 31 * newHash + gender.hashCode();
+        newHash = 31 * newHash + colors.hashCode();
+        newHash = 31 * newHash + accessories.hashCode();
+        newHash = 31 * newHash + restrictions;
+
+        if (lastResult != null && newHash == constPartHash) {
+            return lastResult;
+        }
+
+        constPartHash = newHash;
+
+        return constantPart = "0;" + // bonus
+            id + ";" +
+            name + ";" +
+            race.ordinal() + ";" + // @todo title
+            gfxId + "^" + size + ";" +
+            gender.ordinal() + ";" +
             ";" + // @todo alignment
-            exploration.player().spriteInfo().colors().toHexString(";") + ";" +
-            exploration.player().spriteInfo().accessories() + ";" +
+            colors.toHexString(";") + ";" +
+            accessories + ";" +
             ";" + // @todo aura
             ";;" + // @todo emote; emote timer
             ";;" + // @todo guild; guild emblem
-            Integer.toString(exploration.restrictions().toInt(), 36) + ";"
+            Integer.toString(restrictions, 36) + ";"
         // @todo mount
         ;
     }

src/main/java/fr/quatrevieux/araknemu/game/fight/castable/BaseCastScope.java

@@ -234,7 +234,7 @@ public Collection<F> targets() {
         }
 
         @Override
-        public Set<C> cells() {
+        public List<C> cells() {
             return effect.area().resolve(target, from);
         }
 

src/main/java/fr/quatrevieux/araknemu/game/fight/castable/CastScope.java

@@ -117,6 +117,6 @@ public static interface EffectScope<F extends FighterData, C extends Battlefield
         /**
          * Get list of cells into the effect area
          */
-        public Set<C> cells();
+        public List<C> cells();
     }
 }

src/main/java/fr/quatrevieux/araknemu/game/fight/castable/effect/handler/misc/RevealInvisibleHandler.java

@@ -27,7 +27,7 @@
 import fr.quatrevieux.araknemu.game.fight.map.FightCell;
 
 import java.util.Collection;
-import java.util.Set;
+import java.util.List;
 
 /**
  * Reveal all invisible objects and fighters
@@ -61,7 +61,7 @@ private void revealFighters(Fighter caster, Collection<Fighter> targets) {
     }
 
     private void revealObjects(Fighter caster, FightCastScope.EffectScope effect) {
-        final Set<FightCell> cells = effect.cells();
+        final List<FightCell> cells = effect.cells();
 
         for (BattlefieldObject object : fight.map().objects()) {
             if (cells.contains(object.cell()) && !object.visible(caster)) {

src/main/java/fr/quatrevieux/araknemu/game/player/inventory/accessory/InventoryAccessories.java

@@ -39,7 +39,7 @@ public InventoryAccessories(InventorySlots slots) {
     public Accessory get(AccessoryType type) {
         return slots.get(type.slot()).entry()
             .<Accessory>map(InventoryAccessory::new)
-            .orElseGet(() -> new NullAccessory(type))
+            .orElseGet(() -> NullAccessory.from(type))
         ;
     }
 }

src/main/java/fr/quatrevieux/araknemu/game/player/sprite/AbstractPlayerSpriteInfo.java

@@ -56,7 +56,7 @@ public int gfxId() {
 
     @Override
     public SpriteSize size() {
-        return new SpriteSize(100, 100);
+        return SpriteSize.DEFAULT;
     }
 
     @Override

src/main/java/fr/quatrevieux/araknemu/game/player/sprite/SpriteSize.java

@@ -19,12 +19,17 @@
 
 package fr.quatrevieux.araknemu.game.player.sprite;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 /**
  * Store size of the sprite
  */
 public final class SpriteSize {
+    public static final SpriteSize DEFAULT = new SpriteSize(100, 100);
+
     private final int x;
     private final int y;
+    private @Nullable String stringCache = null;
 
     public SpriteSize(int x, int y) {
         this.x = x;
@@ -41,6 +46,32 @@ public int y() {
 
     @Override
     public String toString() {
-        return x + "x" + y;
+        final String stringCache = this.stringCache;
+
+        if (stringCache != null) {
+            return stringCache;
+        }
+
+        return this.stringCache = x + "x" + y;
+    }
+
+    @Override
+    public boolean equals(@Nullable Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        final SpriteSize that = (SpriteSize) o;
+
+        return x == that.x && y == that.y;
+    }
+
+    @Override
+    public int hashCode() {
+        return (17 + x) * 31 + y;
     }
 }

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/CellArea.java

@@ -24,7 +24,7 @@
 import org.checkerframework.checker.index.qual.NonNegative;
 
 import java.util.Collections;
-import java.util.Set;
+import java.util.List;
 
 /**
  * Resolve single cell
@@ -33,8 +33,8 @@ public final class CellArea implements SpellEffectArea {
     public static final CellArea INSTANCE = new CellArea();
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
-        return Collections.singleton(target);
+    public <C extends MapCell> List<C> resolve(C target, C source) {
+        return Collections.singletonList(target);
     }
 
     @Override

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/CheckboardArea.java

@@ -23,7 +23,7 @@
 import fr.quatrevieux.araknemu.data.value.EffectArea;
 import org.checkerframework.checker.index.qual.NonNegative;
 
-import java.util.Set;
+import java.util.List;
 
 /**
  * Resolve ring area (circle border)
@@ -38,7 +38,7 @@ public CheckboardArea(EffectArea area) {
     }
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
+    public <C extends MapCell> List<C> resolve(C target, C source) {
         return area.resolve(target, source);
     }
 

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/CircleArea.java

@@ -24,7 +24,7 @@
 import org.checkerframework.checker.index.qual.NonNegative;
 
 import java.util.Collections;
-import java.util.Set;
+import java.util.List;
 
 /**
  * Resolve circle area
@@ -37,12 +37,12 @@ public CircleArea(EffectArea area) {
     }
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
+    public <C extends MapCell> List<C> resolve(C target, C source) {
         final @NonNegative int size = area.size();
 
         switch (size) {
             case 0:
-                return Collections.singleton(target);
+                return Collections.singletonList(target);
 
             case 1:
                 return Util.resolveCenterAndAdjacent(target);

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/CircularArea.java

@@ -25,7 +25,8 @@
 import fr.quatrevieux.araknemu.data.value.EffectArea;
 import org.checkerframework.checker.index.qual.NonNegative;
 
-import java.util.Set;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.function.Predicate;
 
 /**
@@ -41,10 +42,11 @@ public CircularArea(EffectArea area, Predicate<Integer> distanceChecker) {
     }
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
+    @SuppressWarnings("unchecked")
+    public <C extends MapCell> List<C> resolve(C target, C source) {
         final DofusMap<C> map = target.map();
         final CoordinateCell<C> center = target.coordinate();
-        final Set<C> cells = Util.createOrderedSet(target);
+        final List<C> cells = new ArrayList<>();
 
         for (int i = 0; i < map.size(); ++i) {
             final CoordinateCell<C> cell = map.get(i).coordinate();
@@ -54,6 +56,8 @@ public <C extends MapCell> Set<C> resolve(C target, C source) {
             }
         }
 
+        Util.sortCells(target, cells);
+
         return cells;
     }
 

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/CrossArea.java

@@ -24,7 +24,8 @@
 import fr.quatrevieux.araknemu.data.value.EffectArea;
 import org.checkerframework.checker.index.qual.NonNegative;
 
-import java.util.Set;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Resolver for cross area
@@ -37,13 +38,13 @@ public CrossArea(EffectArea area) {
     }
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
+    public <C extends MapCell> List<C> resolve(C target, C source) {
         // Optimization for size 1
         if (size() == 1) {
             return Util.resolveCenterAndAdjacent(target);
         }
 
-        final Set<C> cells = Util.createOrderedSet(target);
+        final List<C> cells = new ArrayList<>(size() * 4 + 1);
 
         cells.add(target);
 
@@ -55,6 +56,8 @@ public <C extends MapCell> Set<C> resolve(C target, C source) {
             LineArea.addCells(cells, target, direction, area.size());
         }
 
+        Util.sortCells(target, cells);
+
         return cells;
     }
 

src/main/java/fr/quatrevieux/araknemu/game/spell/effect/area/LineArea.java

@@ -26,9 +26,9 @@
 import fr.quatrevieux.araknemu.data.value.EffectArea;
 import org.checkerframework.checker.index.qual.NonNegative;
 
+import java.util.ArrayList;
 import java.util.Collections;
-import java.util.LinkedHashSet;
-import java.util.Set;
+import java.util.List;
 
 /**
  * Resolve in line area
@@ -41,13 +41,13 @@ public LineArea(EffectArea area) {
     }
 
     @Override
-    public <C extends MapCell> Set<C> resolve(C target, C source) {
+    public <C extends MapCell> List<C> resolve(C target, C source) {
         if (area.size() == 0) {
-            return Collections.singleton(target);
+            return Collections.singletonList(target);
         }
 
         final Direction direction = source.coordinate().directionTo(target.coordinate());
-        final Set<C> cells = new LinkedHashSet<>(area.size() + 1); // Cell are added in order, so no need to sort using a TreeSet
+        final List<C> cells = new ArrayList<>(area.size() + 1);
 
         cells.add(target);
         addCells(cells, target, direction, area.size());
@@ -65,7 +65,7 @@ public EffectArea.Type type() {
         return area.size();
     }
 
-    static <C extends MapCell<C>> void addCells(Set<C> cells, C start, Direction direction, int size) {
+    static <C extends MapCell<C>> void addCells(List<C> cells, C start, Direction direction, int size) {
         final DofusMap<C> map = start.map();
         final int inc = direction.nextCellIncrement(map.dimensions().width());