feat(plugin): have piece transformations first rotate, then flip

Author: anarchuser

plugin/src/shared/sc/plugin2021/PieceShape.kt

@@ -53,7 +53,7 @@ enum class PieceShape(coordinates: Set<Coordinates>) {
 
     /** Applies all the given transformations. */
     fun transform(rotation: Rotation, shouldFlip: Boolean): Set<Coordinates> =
-            coordinates.flip(shouldFlip).rotate(rotation)
+            coordinates.rotate(rotation).flip(shouldFlip)
 
     companion object {
         val shapes: Map<Int, PieceShape> = ((0 until Constants.TOTAL_PIECE_SHAPES) zip values()).toMap()

plugin/src/test/sc/plugin2021/PieceTest.kt

@@ -44,9 +44,9 @@ class PieceTest: StringSpec({
         PieceShape.PENTO_W.transform(Rotation.MIRROR, false) shouldBe shapes[2]
         PieceShape.PENTO_W.transform(Rotation.LEFT,   false) shouldBe shapes[3]
         PieceShape.PENTO_W.transform(Rotation.NONE,   true)  shouldBe shapes[3]
-        PieceShape.PENTO_W.transform(Rotation.RIGHT,  true)  shouldBe shapes[0]
+        PieceShape.PENTO_W.transform(Rotation.RIGHT,  true)  shouldBe shapes[2]
         PieceShape.PENTO_W.transform(Rotation.MIRROR, true)  shouldBe shapes[1]
-        PieceShape.PENTO_W.transform(Rotation.LEFT,   true)  shouldBe shapes[2]
+        PieceShape.PENTO_W.transform(Rotation.LEFT,   true)  shouldBe shapes[0]
     }
     "Piece coordination calculation" {
         val position = Coordinates(2, 2)