4 files changed, 114 insertions, 107 deletions
diff --git a/src/Tile/Tile.test.ts b/src/Tile/Tile.test.ts
deleted file mode 100644
index 62ac51e..0000000
--- a/src/Tile/Tile.test.ts
+++ /dev/null
@@ -1,56 +0,0 @@
-import assert from 'assert';
-import Tile, { Direction, Feature } from './Tile';
-
-const { North, East, South, West } = Direction;
-const { Road, Town, Empty, River } = Feature;
-
-describe('Tile', () => {
-  describe('getSide', () => {
-    it('Should get North, East, South and West sides correctly', () => {
-      const cell = new Tile(Empty, [Road, Town, Empty, River]);
-
-      assert.strictEqual(cell.getSide(North), Road);
-      assert.strictEqual(cell.getSide(East), Town);
-      assert.strictEqual(cell.getSide(South), Empty);
-      assert.strictEqual(cell.getSide(West), River);
-    });
-
-    it('Should respect cell orientation', () => {
-      const cell = new Tile(Empty, [Road, Town, Empty, River]);
-      cell.rotate(5);
-
-      assert.strictEqual(cell.getSide(North), River);
-      assert.strictEqual(cell.getSide(East), Road);
-      assert.strictEqual(cell.getSide(South), Town);
-      assert.strictEqual(cell.getSide(West), Empty);
-    });
-
-    it('Should work with negative orientation', () => {
-      const cell = new Tile(Empty, [Road, Town, Empty, River]);
-      cell.rotate(-7);
-
-      assert.strictEqual(cell.getSide(North), River);
-      assert.strictEqual(cell.getSide(East), Road);
-      assert.strictEqual(cell.getSide(South), Town);
-      assert.strictEqual(cell.getSide(West), Empty);
-    });
-  });
-
-  describe('getAttachments', () => {
-    it('Should correclty list legal attachments', () => {
-      const attachTo = new Tile(Town, [Road, Town, Town, Road])
-      const cell = new Tile(Road, [Empty, Road, Road, Empty])
-
-      cell.print();
-      attachTo.print();
-
-      const attachments = attachTo.getAttachments(cell);
-      assert.strictEqual(attachments.length, 4);
-      assert.deepStrictEqual(attachments[0], { side: 0, rotation: 0, cell, attachTo });
-      assert.deepStrictEqual(attachments[1], { side: 0, rotation: 1, cell, attachTo });
-      assert.deepStrictEqual(attachments[2], { side: 3, rotation: 0, cell, attachTo });
-      assert.deepStrictEqual(attachments[3], { side: 3, rotation: 3, cell, attachTo });
-    });
-  });
-});
-
diff --git a/src/Tile/Tile.ts b/src/Tile/Tile.ts
index 4eee263..4dd6ecb 100644
--- a/src/Tile/Tile.ts
+++ b/src/Tile/Tile.ts
@@ -1,8 +1,3 @@
-import _ from 'lodash';
-import Debug, { Debugger } from 'debug';
-
-const debug = Debug('cell');
-
 export enum Direction {
   North,
   East,
@@ -11,66 +6,31 @@ export enum Direction {
 }
 
 export enum Feature {
-  Empty = " ",
-  Road = "R",
-  Town = "T",
-  River = "I",
-  Church = "C",
-}
-
-export interface Attachment {
-  attachTo: Tile;
-  side: Direction;
-  cell: Tile;
-  rotation: number; // Clockwise rotation of a cell
+  Empty = ' ',
+  Road = 'R',
+  Town = 'T',
+  River = 'I',
+  Church = 'C',
 }
 
 
+// Abstract Tile data
 export default class Tile {
   center: Feature;
-  private sides: [Feature, Feature, Feature, Feature];
-  neighbors: [Tile, Tile, Tile, Tile];
-  private orientation: number // amount of 90-degree counter-clockwise rotations from original orientation
+  sides: [Feature, Feature, Feature, Feature];
   shield?: boolean;
 
-  debug: Debugger;
-
-  public constructor(center: Feature, sides: [Feature, Feature, Feature, Feature], orientation = 0, shield = false) {
+  public constructor(center: Feature, sides: [Feature, Feature, Feature, Feature], shield = false) {
     this.center = center;
     this.sides = sides;
     this.shield = shield;
-    this.orientation = orientation;
-  }
-
-  print() {
-    console.log( ` ${this.getSide(Direction.North)} \n${this.getSide(Direction.West)}${this.center}${this.getSide(Direction.East)}\n ${this.getSide(Direction.South)} `);
   }
 
   getSide(direction: Direction) {
-    return this.sides[(((this.orientation + direction) % 4) + 4) % 4];
-  }
-
-  rotate(rotation = 1) {
-    debug(`Rotating ${rotation} clockwise`)
-    this.orientation = this.orientation - rotation;
+    return this.sides[((direction % 4) + 4) % 4];
   }
 
-  getAttachments(cell: Tile) {
-    return _.flatten([0, 1, 2, 3].map(side => {
-      const item = this.getSide(side);
-      return [0, 1, 2, 3]
-        .filter(rotation => cell.getSide(side - rotation + 2) === item)
-        .map(rotation => ({
-          cell,
-          rotation,
-          side,
-          attachTo: this as Tile
-        }))
-    }));
-  }
-
-  attach(cell: Tile, side: Direction) {
-    if (this.neighbors[side]) throw new Error('There is something already attached to this side!');
-    this.neighbors[side] = cell;
+  print() {
+    console.log( ` ${this.getSide(Direction.North)} \n${this.getSide(Direction.West)}${this.center}${this.getSide(Direction.East)}\n ${this.getSide(Direction.South)} `);
   }
 }
diff --git a/src/Tile/TileOnBoard.test.ts b/src/Tile/TileOnBoard.test.ts
new file mode 100644
index 0000000..7448435
--- /dev/null
+++ b/src/Tile/TileOnBoard.test.ts
@@ -0,0 +1,57 @@
+import assert from 'assert';
+import TileOnBoard from './TileOnBoard';
+import { Direction, Feature } from './Tile';
+
+const { North, East, South, West } = Direction;
+const { Road, Town, Empty, River } = Feature;
+
+describe('TileOnBoard', () => {
+  describe('getSide', () => {
+    it('Should get North, East, South and West sides correctly', () => {
+      const tile = new TileOnBoard(Empty, [Road, Town, Empty, River]);
+
+      assert.strictEqual(tile.getSide(North), Road);
+      assert.strictEqual(tile.getSide(East), Town);
+      assert.strictEqual(tile.getSide(South), Empty);
+      assert.strictEqual(tile.getSide(West), River);
+    });
+
+    it('Should respect tile orientation', () => {
+      const tile = new TileOnBoard(Empty, [Road, Town, Empty, River]);
+      tile.rotate(5);
+
+      assert.strictEqual(tile.getSide(North), River);
+      assert.strictEqual(tile.getSide(East), Road);
+      assert.strictEqual(tile.getSide(South), Town);
+      assert.strictEqual(tile.getSide(West), Empty);
+    });
+
+    it('Should work with negative orientation', () => {
+      const tile = new TileOnBoard(Empty, [Road, Town, Empty, River]);
+      tile.rotate(-7);
+
+      assert.strictEqual(tile.getSide(North), River);
+      assert.strictEqual(tile.getSide(East), Road);
+      assert.strictEqual(tile.getSide(South), Town);
+      assert.strictEqual(tile.getSide(West), Empty);
+    });
+  });
+
+  describe('getAttachments', () => {
+    it('Should correclty list legal attachments', () => {
+      const attachTo = new TileOnBoard(Town, [Road, Town, Town, Road])
+      const tile = new TileOnBoard(Road, [Empty, Road, Road, Empty])
+
+      tile.print();
+      attachTo.print();
+
+      const attachments = attachTo.getAttachments(tile);
+      assert.strictEqual(attachments.length, 4);
+      assert.deepStrictEqual(attachments[0], { side: 0, rotation: 0, tile, attachTo });
+      assert.deepStrictEqual(attachments[1], { side: 0, rotation: 1, tile, attachTo });
+      assert.deepStrictEqual(attachments[2], { side: 3, rotation: 0, tile, attachTo });
+      assert.deepStrictEqual(attachments[3], { side: 3, rotation: 3, tile, attachTo });
+    });
+  });
+});
+
diff --git a/src/Tile/TileOnBoard.ts b/src/Tile/TileOnBoard.ts
new file mode 100644
index 0000000..65f3731
--- /dev/null
+++ b/src/Tile/TileOnBoard.ts
@@ -0,0 +1,46 @@
+import _ from 'lodash';
+import Tile, { Feature, Direction } from './Tile';
+
+export interface Attachment {
+  attachTo: Tile;
+  side: Direction;
+  tile: Tile;
+  rotation: number; // Clockwise rotation of a tile
+}
+
+export default class TileOnBoard extends Tile {
+  neighbors: [Tile, Tile, Tile, Tile];
+  private orientation: number // amount of 90-degree counter-clockwise rotations from original orientation
+
+  constructor(center: Feature, sides: [Feature, Feature, Feature, Feature], shield = false, orientation = 0) {
+    super(center, sides, shield);
+    this.orientation = orientation;
+  }
+
+  getSide(direction: Direction) {
+    return this.sides[(((this.orientation + direction) % 4) + 4) % 4];
+  }
+
+  rotate(rotation = 1) {
+    this.orientation = this.orientation - rotation;
+  }
+
+  getAttachments(tile: Tile): Attachment[] {
+    return _.flatten([0, 1, 2, 3].map(side => {
+      const item = this.getSide(side);
+      return [0, 1, 2, 3]
+        .filter(rotation => tile.getSide(side - rotation + 2) === item)
+        .map(rotation => ({
+          tile,
+          rotation,
+          side,
+          attachTo: this as Tile
+        }))
+    }));
+  }
+
+  attach(tile: Tile, side: Direction) {
+    if (this.neighbors[side]) throw new Error('There is something already attached to this side!');
+    this.neighbors[side] = tile;
+  }
+}