Apple-2-SW/lawless-legends
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More flag work.

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This commit is contained in:
Martin Haye 2018-02-14 09:42:54 -08:00
parent ab5c423bc0
commit e65956a8a0
1 changed files with 10 additions and 4 deletions
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14
Platform/Apple/virtual/src/raycast/render.s
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@ -325,12 +325,14 @@ castRay: !zone
lda deltaDistX ; re-init X distance
sta sideDistX
lda (pMap),y ; check map at current X/Y position
and #NOTFLG_AUTOMAP ; mask off automap mark
beq .DDA_step ; nothing there? do another step.
bpl .hitX
jmp .hitSprite
; We hit something!
.hitX: !if DEBUG >= 2 { +prStr : !text " Hit.",0 }
ora #FLG_AUTOMAP ; remember that this square...
sta (pMap),y ; ...has been seen
and #NOTFLG_AUTOMAP
sta txNum ; store the texture number we hit
lda #0
sec
@ -382,12 +384,14 @@ castRay: !zone
lda deltaDistY ; re-init Y distance
sta sideDistY
lda (pMap),y ; check map at current X/Y position
and #NOTFLG_AUTOMAP ; mask off automap mark
bmi .hitSprite
bne .hitY ; nothing there? do another step.
jmp .DDA_step
.hitY: ; We hit something!
!if DEBUG >= 2 { +prStr : !text " Hit.",0 }
ora #FLG_AUTOMAP ; remember that this square...
sta (pMap),y ; ...has been seen
and #NOTFLG_AUTOMAP
sta txNum ; store the texture number we hit
lda #0
sec
@ -415,11 +419,13 @@ castRay: !zone
!if DEBUG >= 2 { jsr .debugFinal }
rts
.hitSprite:
cmp #NOTFLG_AUTOMAP ; check for special mark at edges of map (was $FF but the automap bit was masked off)
cmp #$FF ; check for special mark at edges of map
beq .hitEdge
tax
ora #FLG_AUTOMAP ; remember that this square...
sta (pMap),y ; ...has been seen
; We found a sprite cell on the map. We only want to process this sprite once,
; so check if we've already done it.
tax
and #FLG_SPDONE
beq .notDone ; already done, don't do again
txa