diff options
Diffstat (limited to 'src/background.s')
| -rw-r--r-- | src/background.s | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/background.s b/src/background.s index 28cb6df..add7059 100644 --- a/src/background.s +++ b/src/background.s @@ -11,6 +11,8 @@ ;; The boolean value is directly set into the `a` register; but the memory ;; will not be written in any way. Hence, you can still rely on the old ;; `zp_arg0` and `zp_arg1` values even after calling this function. + ;; + ;; The 'y' register is preserved. .proc collides ;; We iterate first on the rows, as that's how the data on ;; `Background::platforms` is actually sorted by. @@ -40,10 +42,7 @@ jmp @row_check @column_check: - ;; Save the first return argument, which is the Y tile coordinate. - sta Globals::zp_arg2 - - ;; Check the left edge + ;; Check the left edge. ;; ;; NOTE: small optimization on sky and ground which have $00 for the ;; left edge. |