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Breaking up/explaining MarkObjGone's boundary value
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@Clownacy
Clownacy committed Jan 11, 2016
1 parent 63b726f commit c4b64f3
Showing 1 changed file with 4 additions and 4 deletions.
8 changes: 4 additions & 4 deletions s2.asm
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Expand Up @@ -27628,7 +27628,7 @@ MarkObjGone:
move.w x_pos(a0),d0
andi.w #$FF80,d0
sub.w (Camera_X_pos_coarse).w,d0
cmpi.w #$280,d0
cmpi.w #$80+320+$40+$80,d0 ; This gives an object $80 pixels of room offscreen before being unloaded (the $40 is there to round up 320 to a multiple of $80)
bhi.w +
bra.w DisplaySprite

Expand All @@ -27649,7 +27649,7 @@ MarkObjGone2:
+
andi.w #$FF80,d0
sub.w (Camera_X_pos_coarse).w,d0
cmpi.w #$280,d0
cmpi.w #$80+320+$40+$80,d0 ; This gives an object $80 pixels of room offscreen before being unloaded (the $40 is there to round up 320 to a multiple of $80)
bhi.w +
bra.w DisplaySprite
+
Expand All @@ -27672,7 +27672,7 @@ MarkObjGone3:
move.w x_pos(a0),d0
andi.w #$FF80,d0
sub.w (Camera_X_pos_coarse).w,d0
cmpi.w #$280,d0
cmpi.w #$80+320+$40+$80,d0 ; This gives an object $80 pixels of room offscreen before being unloaded (the $40 is there to round up 320 to a multiple of $80)
bhi.w +
rts
+
Expand All @@ -27692,7 +27692,7 @@ MarkObjGone_P1:
move.w x_pos(a0),d0
andi.w #$FF80,d0
sub.w (Camera_X_pos_coarse).w,d0
cmpi.w #$280,d0
cmpi.w #$80+320+$40+$80,d0 ; This gives an object $80 pixels of room offscreen before being unloaded (the $40 is there to round up 320 to a multiple of $80)
bhi.w +
bra.w DisplaySprite
+
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