Flyweight

src/main/kotlin/oop/Flyweight/Admiral.kt

@@ -0,0 +1,19 @@
+package oop.Flyweight
+
+import java.awt.Point
+
+class Admiral : Soldier {
+  companion object {
+    val TYPE = 1
+  }
+  init {
+      Flyweitght.objectInstances++
+  }
+
+  val attack = 6
+  val salary = 23000
+  override fun attack(currentPosition: Point, attackPosition: Point) {
+    currentPosition.move(attackPosition.x, attackPosition.y)
+  }
+
+}

src/main/kotlin/oop/Flyweight/Captain.kt

@@ -0,0 +1,19 @@
+package oop.Flyweight
+
+import java.awt.Point
+
+class Captain : Soldier {
+  companion object {
+    val TYPE = 2
+  }
+  init {
+      Flyweitght.objectInstances++
+  }
+
+  val attack = 10
+  val salary = 10000
+  override fun attack(currentPosition: Point, attackPosition: Point) {
+    currentPosition.move(attackPosition.x, attackPosition.y)
+  }
+
+}

src/main/kotlin/oop/Flyweight/Flyweitght.kt

@@ -0,0 +1,26 @@
+package oop.Flyweight
+
+import java.awt.Point
+class Flyweitght{
+  companion object{
+    var objectInstances = 0
+  }
+}
+fun main(args: Array<String>) {
+  val soldiers = listOf(
+    SoldierClient(Admiral.TYPE),
+    SoldierClient(Admiral.TYPE),
+    SoldierClient(Captain.TYPE),
+    SoldierClient(Captain.TYPE),
+    SoldierClient(Admiral.TYPE),
+    SoldierClient(Admiral.TYPE)
+  )
+  soldiers[0].attack(Point(1,2))
+  soldiers[1].attack(Point(10,12))
+  soldiers[2].attack(Point(9,5))
+  soldiers[3].attack(Point(11,7))
+  soldiers[4].attack(Point(21,3))
+
+  System.out.println(Flyweitght.objectInstances)
+
+}

src/main/kotlin/oop/Flyweight/Soldier.kt

@@ -0,0 +1,7 @@
+package oop.Flyweight
+
+import java.awt.Point
+
+interface Soldier {
+  fun attack(currentPosition: Point, attackPosition: Point)
+}

src/main/kotlin/oop/Flyweight/SoldierClient.kt

@@ -0,0 +1,13 @@
+package oop.Flyweight
+
+import java.awt.Point
+
+class SoldierClient(private val type: Int) {
+  private val soldier: Soldier = SoldierFactory.getSoldier(type)
+  private val currentPosition: Point = Point()
+
+  fun attack(attackPoint: Point){
+    soldier.attack(currentPosition,attackPoint)
+  }
+
+}

src/main/kotlin/oop/Flyweight/SoldierFactory.kt

@@ -0,0 +1,28 @@
+package oop.Flyweight
+
+class SoldierFactory {
+  companion object {
+    var admiral: Admiral? = null
+    var captain: Captain? = null
+
+      fun getSoldier(type: Int): Soldier{
+      when(type){
+        1 -> {
+          if(admiral == null){
+            admiral = Admiral()
+          }
+          return admiral!!
+        }
+        2 -> {
+          if(captain == null){
+            captain = Captain()
+          }
+          return captain!!
+        }
+      }
+      throw IllegalArgumentException()
+    }
+  }
+
+
+}