Faster and shorter draw

And C64 version works again :)

C64/gr_basics.asm

@@ -304,6 +304,16 @@ NoMountain
     rts
 .endp
 ;--------------------------------------------------
+.proc SoilDownTurbo
+;--------------------------------------------------
+; fast SoilDown froc - test
+    jsr ClearTanks
+NoClearTanks
+;    jsr CalcAndDrawMountains
+    jmp DrawTanks
+    ;rts
+.endp
+;--------------------------------------------------
 .proc TypeChar
 ; puts char on the graphics screen
 ; in: CharCode

definitions.asm

@@ -25,7 +25,7 @@ TextBackgroundColor = $02   ; REAL constans - use: LDA #TextBackgroundColor
 TextForegroundColor = $0A
 space = 0  ; space in screencodes
 
-KeyRepeatSpeed = 10 ; (max 127 !!!)
+KeyRepeatSpeed = 8 ; (max 127 !!!)
 
 ;character codes for symbols (tank, parachute, etc. )
 ; characters from tanks.fnt (graphics screen)

grafproc.asm

@@ -60,20 +60,24 @@ DrawOnTheScreen
     sta YI
     sta YI+1
     
+    sta HowToDraw       ; reset flags
+    sta DrawDirFactor   ; reset flags
+    
     ; setting the direction controll bits
     cpw ydraw ybyte
     bcc LineDown
     ; here one line up
-    ; we are setting bit 0
-    mva #1 HowToDraw  ;here we can because it's first operation
     ; we are subctracting Yend from Ybegin (reverse order)
     ; DY=YI-YK
     sbw ydraw ybyte DY
-    jmp CheckDirectionX
+    ; we are setting bit 7
+    lda #%10000000
+    sta HowToDraw  ;here we can because it's first operation
+    bne CheckDirectionX ; JMP
 LineDown
     ; one line down here
-    ; we are setting bit 0
-    mva #0 HowToDraw  ;here we can because it's first operation
+    ; we are clearing bit 7 (it's cleared :) )
+;    mva #0 HowToDraw  ;here we can because it's first operation
     ; substract Ybegin from Yend (normal order)
     ; DY=YK-YI
     sbw ybyte ydraw DY
@@ -81,22 +85,21 @@ CheckDirectionX
     cpw xdraw xbyte
     bcc LineRight
     ; here goes line to the left
-    ; we set bit 1
-
-    lda HowToDraw
-    ora #$02
-    sta HowToDraw
     ; substract Xend from Xbegin (reverse)
     ; DX=XI-XK
     sbw xdraw xbyte DX
-    jmp CheckDirectionFactor
+    ; we set bit 6
+    lda HowToDraw
+    ora #%01000000
+    sta HowToDraw
+    bne CheckDirectionFactor    ; JMP
 LineRight
     ; here goes one line to the right
-    ; we clear bit 0
+    ; we clear bit 6
     ; we can do nothing because the bit is cleared!
 
     ;lda HowToDraw
-    ;and #$FD
+    ;and #%10111111
     ;sta HowToDraw
 
     ; substracting Xbegin from Xend (normal way)
@@ -111,17 +114,7 @@ CheckDirectionFactor
     ; we already have DX in A
     cpw DX DY
 
-    bcc SwapXY
-    ; 'a' factor is fire, so we copy parameters
-    ; XK=DX
-    mwa DX XK
-    ; and clearing bit 2
-    ; and bit 2 clear
-    ; (is not needed because already cleared)
-    ;lda HowToDraw
-    ;and #$FB
-    ;sta HowToDraw
-    jmp LineParametersReady
+    bcs NoSwapXY
 SwapXY
     ; not this half of a quarter! - parameters must be swapped
     ; XK=DY
@@ -132,10 +125,18 @@ SwapXY
     mwa DX DY
     mwa XK DX
 
-    ; and let's set bit 2
-    lda HowToDraw
-    ora #$04
-    sta HowToDraw
+    ; and let's set bit 7 of DrawDirFactor
+    dec DrawDirFactor
+;    bmi LineParametersReady ; JMP - but we don't need JMP :)
+NoSwapXY
+    ; 'a' factor is fire, so we copy parameters
+    ; XK=DX
+    mwa DX XK
+    ; and clearing bit 7 of DrawDirFactor
+    ; and bit 7 clear
+    ; (is not needed because already cleared)
+    ;lda #0
+    ;sta DrawDirFactor
 LineParametersReady
     ; let's check if length is not zero
     lda DX
@@ -191,9 +192,8 @@ drplot ; Our plot that checks how to calculate pixels.
     ;  and YI to temp)
 
 
-    lda HowToDraw
-    and #$04
-    bne SwappedXY
+    bit DrawDirFactor
+    bmi SwappedXY
     mwa XI temp
     mwa YI temp2
     jmp CheckPlotY
@@ -201,9 +201,8 @@ SwappedXY
     mwa XI temp2
     mwa YI temp
 CheckPlotY
-    lda HowToDraw
-    and #01
-    bne LineGoesUp
+    bit HowToDraw
+    bmi LineGoesUp
     ; here we know that line goes down and we are not changing Y
     adw temp2 ytempDRAW ydraw ; YI
     jmp CheckPlotX
@@ -211,9 +210,8 @@ LineGoesUp
     ; line goes up here - we are reversing Y
     sbw ytempDRAW temp2 ydraw ; YI
 CheckPlotX
-    lda HowToDraw
-    and #02
-    bne LineGoesLeft
+    bit HowToDraw
+    bvs LineGoesLeft
     ; here we know that line goes right and we are not changing X
     adw temp xtempDRAW xdraw ; XI
     jmp PutPixelinDraw

scorch.asm

@@ -38,7 +38,7 @@
     icl 'definitions.asm'
 ;---------------------------------------------------
 
-FirstZpageVariable = $53
+FirstZpageVariable = $52
     .zpvar DliColorBack        .byte = FirstZpageVariable
     .zpvar ClearSky         .byte   ; $ff - Crear sky during drawmountains, 0 - no clear sky
     .zpvar PaddleState      .byte   ; old state 2nd button for 2 buttons joysticks
@@ -142,6 +142,7 @@ FirstZpageVariable = $53
     .zpvar Multiplier .word
     .zpvar Multiplier_ .byte  ; 3 bytes
     .zpvar HowToDraw .byte
+    .zpvar DrawDirFactor .byte
     .zpvar gravity .byte
     .zpvar LineLength .word
     .zpvar tracerflag .byte

scorchC64.asm

@@ -24,7 +24,7 @@
 
 ;---------------------------------------------------
 .macro build
-    dta d"1.32" ; number of this build (4 bytes)
+    dta d"1.33" ; number of this build (4 bytes)
 .endm
 
 .macro RMTSong
@@ -35,11 +35,12 @@
     icl 'definitions.asm'
 ;---------------------------------------------------
 
-FirstZpageVariable = $58 ; $57
+FirstZpageVariable = $56 ; $57
     .zpvar DliColorBack        .byte = FirstZpageVariable
     .zpvar GradientNr        .byte
     .zpvar GradientColors    .word
     .zpvar WindChangeInRound    .byte    ; wind change after each turn (not round only) flag - (0 - round only, >0 - each turn)
+    .zpvar RandomMountains  .byte   ; mountains type change after each turn flag - (0 - round only, >0 - each turn)
     .zpvar JoystickNumber    .byte
     .zpvar LazyFlag            .byte    ; 7 bit - run Lazy Darwin, 6 bit - run Lazy Boy or Darwin (!) after inventory, 0 - nothing
     .zpvar SpyHardFlag        .byte    ; >$7f - run SpyHard after inventory
@@ -135,6 +136,7 @@ FirstZpageVariable = $58 ; $57
     .zpvar Multiplier .word
     .zpvar Multiplier_ .byte  ; 3 bytes
     .zpvar HowToDraw .byte
+    .zpvar DrawDirFactor .byte
     .zpvar gravity .byte
     .zpvar LineLength .word
     .zpvar tracerflag .byte
@@ -334,7 +336,8 @@ MakeDarkScreen
 .endp
 ;--------------------------------------------------
 .proc ShellDelay
-    ldx flyDelay
+    ldy flyDelay
+Y
 DelayLoop
       lda $d012
 @     cmp $d012
@@ -342,7 +345,7 @@ DelayLoop
       lda $d012
 @     cmp $d012
       beq @-
-      dex
+      dey
     bne DelayLoop
 noShellDelay
     rts