Opty. Return of one of the texts. Now we have 3bytes :)

2026-05-20 22:33:43 +02:00 · 2023-10-08 19:30:01 +02:00
parent a44905a2b5
commit e5e3424a7e
5 changed files with 8 additions and 5 deletions
@@ -46,7 +46,6 @@
    lda ybyte+1
    bpl DrawOnTheScreen
 DrawOutOfTheScreen
-    ;jsr DrawJumpPad
    rts
 DrawOnTheScreen
    ; constant parameters
@@ -118,9 +117,13 @@ SwapXY
    ; DY=DX
    ; DX=XK  - because DY is there so DY and DX are swapped
    ; YK ... not used
-    mwa DY XK
+    mvy DY XK
+    mvx DY+1 XK+1
+    ; now we have XK in Y and X for optimization
    mwa DX DY
-    mwa XK DX
+    ; DX=XK optimized (4 bytes saved!)
+    sty DX
+    stx DX+1

    ; and let's set bit 7 of DrawDirFactor
    dec DrawDirFactor