SHOW:
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- or go back to the newest paste.
1 | - | Lbl Left |
1 | + | Lbl Right |
2 | .r₁=row scan offset | |
3 | .r₂=column scan index | |
4 | .r₃=column dest index | |
5 | .r₄=last value slid | |
6 | - | 0 |
6 | + | 3 |
7 | .For each row | |
8 | For(4) | |
9 | →r₁ | |
10 | - | 0→r₃→r₄ |
10 | + | 0→r₄ |
11 | - | .For each column, starting from the left |
11 | + | 12→r₃ |
12 | .For each column, starting from the right | |
13 | For(4) | |
14 | →r₂ | |
15 | .If occupied by a tile | |
16 | If {+r₁+L₁} | |
17 | .Remove original tile | |
18 | Select(→r₅,0→{r₁+r₂+L₁}) | |
19 | .If equal to the last slid tile | |
20 | !If -r₄ | |
21 | - | {r₁+r₃-1+L₁}++ |
21 | + | |
22 | {r₁+r₃+4+L₁}++ | |
23 | .If not equal to the last slid tile | |
24 | - | .Store tile to destination and increment destination index |
24 | + | |
25 | - | Select(r₅,→{r₃+++r₁-1+L₁}) |
25 | + | .Store tile to destination and decrement destination index |
26 | Select(r₅,→{r₃-4→r₃+r₁+4+L₁}) | |
27 | End | |
28 | .Store value last slid (or garbage if a merge occured) | |
29 | →r₄ | |
30 | - | r₂+1 |
30 | + | |
31 | r₂-4 | |
32 | - | r₁+4 |
32 | + | |
33 | r₁-1 | |
34 | End | |
35 | Return |