Basic implementation of character emblems

src/main/java/emu/nebula/game/character/CharacterGemPreset.java

@@ -0,0 +1,58 @@
+package emu.nebula.game.character;
+
+import dev.morphia.annotations.Entity;
+import emu.nebula.proto.Public.CharGemPreset;
+import lombok.Getter;
+
+@Getter
+@Entity(useDiscriminator = false)
+public class CharacterGemPreset {
+    private String name;
+    private int[] gems;
+    
+    @Deprecated // Morphia only
+    public CharacterGemPreset() {
+        
+    }
+    
+    public CharacterGemPreset(Character character) {
+        this.gems = new int[] {-1, -1, -1};
+    }
+    
+    public int getLength() {
+        return this.getGems().length;
+    }
+    
+    public int getGemIndex(int slotIndex) {
+        if (slotIndex < 0 || slotIndex >= this.getLength()) {
+            return -1;
+        }
+        
+        return this.getGems()[slotIndex];
+    }
+
+    public boolean setGemIndex(int slotId, int gemIndex) {
+        int slotIndex = slotId - 1;
+        
+        if (slotIndex < 0 || slotIndex >= this.getLength()) {
+            return false;
+        }
+        
+        this.getGems()[slotIndex] = gemIndex;
+        
+        return true;
+    }
+    
+    // Proto
+    
+    public CharGemPreset toProto() {
+        var proto = CharGemPreset.newInstance()
+                .addAllSlotGem(this.getGems());
+        
+        if (this.getName() != null) {
+            proto.setName(this.getName());
+        }
+        
+        return proto;
+    }
+}