feat(plugin26): implement board cloning

Author: xeruf

plugin2026/src/main/kotlin/sc/plugin2026/Board.kt

@@ -4,13 +4,14 @@ import com.thoughtworks.xstream.annotations.XStreamAlias
 import sc.api.plugins.MutableTwoDBoard
 import sc.api.plugins.RectangularBoard
 import sc.api.plugins.Team
+import sc.api.plugins.deepCopy
 import sc.plugin2026.FieldState.OBSTRUCTED
 import sc.plugin2026.util.*
 import kotlin.math.floor
 
 /** Spielbrett für Piranhas mit [PiranhaConstants.BOARD_LENGTH]² Feldern.  */
 @XStreamAlias(value = "board")
-class Board(override val gameField: MutableTwoDBoard<Field> = randomFields()): RectangularBoard<Field>(gameField) {
+class Board(gameField: MutableTwoDBoard<Field> = randomFields()): RectangularBoard<Field>(gameField) {
 
     // TODO later
     //override fun toString() =
@@ -27,6 +28,9 @@ class Board(override val gameField: MutableTwoDBoard<Field> = randomFields()): R
     //    return map.joinToString("\n", line + "\n", "\n" + line) { it.append('|').toString() }
     //}
 
+    override fun clone(): Board =
+        Board(gameField.deepCopy())
+    
     companion object {
         /** Erstellt eine zufälliges Spielbrett.  */
         private fun randomFields(): Array<Array<Field>> {
@@ -67,4 +71,3 @@ class Board(override val gameField: MutableTwoDBoard<Field> = randomFields()): R
         }
     }
 }
-