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FOX PLOTS FASTER

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pkali
2022-07-13 17:18:34 -04:00
parent 9806613f2f
commit 9acada4e9f
2 changed files with 43 additions and 52 deletions
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grafproc.asm
+20 -29
View File
@@ -1334,8 +1334,8 @@ EndOfUnPlot
; game. If you are going to speed up the game, start with ; game. If you are going to speed up the game, start with
; plot - it is used by every single effect starting from explosions ; plot - it is used by every single effect starting from explosions
; through line drawing and small text output!!! ; through line drawing and small text output!!!
; We tried to keep it clear and therefore it is far from ;
; optimal speed. ; Optimized by 0xF (Fox) THXXXX!!!
; ----------------------------------------- ; -----------------------------------------
; is it not over the screen ??? ; is it not over the screen ???
@@ -1346,28 +1346,24 @@ CheckX02
bcs EndOfPlot ;nearest RTS bcs EndOfPlot ;nearest RTS
MakePlot MakePlot
; let's calculate coordinates from xdraw and ydraw ; let's calculate coordinates from xdraw and ydraw
mwa xdraw xbyte
lda xbyte
and #$7
sta ybit
;xbyte = xbyte/8 ;xbyte = xbyte/8
lda xbyte lda xdraw+1
lsr xbyte+1 lsr
lda xdraw
ror ;just one bit over 256. Max screenwidth = 512!!! ror ;just one bit over 256. Max screenwidth = 512!!!
lsr lsr
lsr lsr
tay ;save sta xbyte
;--- ;---
ldx ydraw ldx ydraw
lda linetableL,x ldy linetableL,x
sta xbyte
lda linetableH,x lda linetableH,x
sta xbyte+1 sta xbyte+1
ldx ybit lda xdraw
and #$7
tax
lda color lda color
bne ClearPlot bne ClearPlot
@@ -1390,35 +1386,30 @@ ClearPlot
; result is in A (zero or appropriate bit is set) ; result is in A (zero or appropriate bit is set)
; let's calculate coordinates from xdraw and ydraw ; let's calculate coordinates from xdraw and ydraw
mwa xdraw xbyte
lda xbyte
and #$7
sta ybit
;xbyte = xbyte/8 ;xbyte = xbyte/8
lda xbyte lda xdraw+1
lsr xbyte+1 lsr
lda xdraw
ror ;just one bit over 256. Max screenwidht = 512!!! ror ;just one bit over 256. Max screenwidht = 512!!!
lsr lsr
lsr lsr
tay ;save sta xbyte
;--- ;---
ldx ydraw ldx ydraw
lda linetableL,x ldy linetableL,x
sta xbyte
lda linetableH,x lda linetableH,x
sta xbyte+1 sta xbyte+1
ldx ybit lda xdraw
and #$7
tax
lda (xbyte),y lda (xbyte),y
eor #$ff
and bittable,x and bittable,x
eor bittable,x
rts rts
.endp .endp;--------------------------------------------------
;--------------------------------------------------
.proc DrawLine .proc DrawLine
;-------------------------------------------------- ;--------------------------------------------------
mva #0 ydraw+1 mva #0 ydraw+1
lib/atari.hea
+19 -19
View File
@@ -1,33 +1,33 @@
.enum @dmactl .enum @dmactl
blank = %00 blank = %00
narrow = %01 narrow = %01
standard= %10 standard= %10
wide = %11 wide = %11
missiles= %100 missiles= %100
players = %1000 players = %1000
lineX1 = %10000 lineX1 = %10000
lineX2 = %00000 lineX2 = %00000
dma = %100000 dma = %100000
.ende .ende
scr48 = @dmactl(wide|dma|players|missiles|lineX1) ;screen 48b scr48 = @dmactl(wide|dma|players|missiles|lineX1)
scr40 = @dmactl(standard|dma|players|missiles|lineX1) ;screen 40b scr40 = @dmactl(standard|dma|players|missiles|lineX1)
scr32 = @dmactl(narrow|dma|players|missiles|lineX1) ;screen 32b scr32 = @dmactl(narrow|dma|players|missiles|lineX1)
.enum @pmcntl .enum @pmcntl
missiles= %1 missiles= %1
players = %10 players = %10
trigs = %100 trigs = %100
.ende .ende
.enum @gtictl .enum @gtictl
prior0 = %0 prior0 = %0
prior1 = %1 prior1 = %1
prior2 = %10 prior2 = %10
prior4 = %100 prior4 = %100
prior8 = %1000 prior8 = %1000
ply5 = %10000 ; Fifth Player Enable ply5 = %10000 ; Fifth Player Enable
mlc = %100000 ; Multiple Color Player Enable mlc = %100000 ; Multiple Color Player Enable
mode9 = %01000000 mode9 = %01000000
mode10 = %10000000 mode10 = %10000000
mode11 = %11000000 mode11 = %11000000