R: Data clump: Position

TECHDEBT.md

@@ -6,11 +6,13 @@
   - [ ] middle man
 
 # Mikado
-- [x] Remove deltaX, deltaY in Heading
-  - [x] NORTH, etc -> Vector(0, 1)
-    - [x] move -> return Pair but using vector
-      - [x] Add Vector to enum class Heading 
-        - [x] Create Vector data class
+- [x] Remove posX, posY from RoverState
+  - [x] use position in Rover.position
+    - [x] Create toString in Position
+  - [x] use position in Rover constructor()
+    - [x] use position in move()
+      - [x] Add position to RoverState
+        - [x] Create Position data class
 
 # RPP
 - [ ] Design Patterns
@@ -53,3 +55,8 @@
   - [x] Rover.move use copy() on state
   - [x] Rover.constructor use copy() on state
     - [x] Change RoverState to Data Class
+- [x] Remove deltaX, deltaY in Heading
+  - [x] NORTH, etc -> Vector(0, 1)
+    - [x] move -> return Pair but using vector
+      - [x] Add Vector to enum class Heading
+        - [x] Create Vector data class

src/main/kotlin/org/example/Position.kt

@@ -0,0 +1,8 @@
+package org.example
+
+data class Position(
+    val x: Int = 0,
+    val y: Int = 0,
+) {
+    override fun toString(): String = "$x $y"
+}

src/main/kotlin/org/example/Rover.kt

@@ -4,11 +4,12 @@ class Rover {
     constructor(commands: String) {
         val command = commands.split(' ')
         if (command.size >= ROVER_MINIMUM_NEEDED_COMMANDS) {
-            state =
-                state.copy(
-                    positionX = command[ROVER_STARTING_POSITION_X].toInt(),
-                    positionY = command[ROVER_STARTING_POSITION_Y].toInt(),
+            val position =
+                Position(
+                    x = command[ROVER_STARTING_POSITION_X].toInt(),
+                    y = command[ROVER_STARTING_POSITION_Y].toInt(),
                 )
+            state = state.copy(position = position)
             Heading.from(command[ROVER_FACING_DIRECTION][ROVER_COMMANDLIST_DIRECTION])?.let {
                 state = state.copy(heading = it)
             }
@@ -28,7 +29,7 @@ class Rover {
     }
 
     val position: String
-        get() = "${state.positionX} ${state.positionY} ${state.heading}"
+        get() = "${state.position} ${state.heading}"
 
     fun pos(): String = position
 

src/main/kotlin/org/example/RoverState.kt

@@ -1,8 +1,7 @@
 package org.example
 
 data class RoverState(
-    val positionX: Int = 0,
-    val positionY: Int = 0,
+    val position: Position = Position(),
     var heading: Heading = Heading.NORTH,
 ) {
     fun turnLeft(): RoverState = copy(heading = heading.turnLeft())
@@ -10,7 +9,7 @@ data class RoverState(
     fun turnRight(): RoverState = copy(heading = heading.turnRight())
 
     fun move(): RoverState {
-        val (newX, newY) = heading.move(positionX, positionY)
-        return copy(positionX = newX, positionY = newY)
+        val (newX, newY) = heading.move(position.x, position.y)
+        return copy(position = Position(newX, newY))
     }
 }