yahiaetman / scrabble-server Goto Github PK

Describe the bug
The scrabble-utils class uses premium squares from tiles placed in previous turns while calculating the score for a new moves.

To Reproduce
Steps to reproduce the behavior:

1. const scores = {10: 1, 20: 2, 5: 3, 100: 0};
2. const design = [[2, 0, 0, 0, 2], [0, 1, 0, 1, 0], [4, 0, 3, 0, 4], [0, 1, 0, 1, 0], [2, 0, 0, 0, 2]];
3. const words = [[{tile: 10, src: 'rack', position: {col: 1, row: 1}}, {tile: 20, src: 'rack', position: {col: 2, row: 1}}, {tile: 5, src: 'board', position: {col: 3, row: 1}}]];
4. const score = ScrabbleUtils.calculateScore(words, design, scores);
5. score will be equal 10.

Expected behavior
score should be equal 7.

Explanation
The score should be calculated as: scores[10]*2 + scores[20] + scores[5] = 1*2 + 2 + 3 = 7.
However, since the the tile 5 lies on a double-letter square, the server calculated the score as: scores[10]*2 + scores[20] + scores[5]*2 = 1*2 + 2 + 3*2 = 10.
But according to the rules:

Letter and word premiums count only on the turn in which they are played. On later turns, letters already played on premium squares count at face value.

So the double letter beneath tile 5 should be ignored since the tile was already on the board when the word was played. So the correct sore is 7.