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Fix bug with bgcolor and textcolor
This commit is contained in:
jede
greg-king5
@@ -3,23 +3,10 @@
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.export _bgcolor
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.import BGCOLOR
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.import BGCOLOR_CHANGE
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.include "telestrat.inc"
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.proc _bgcolor
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cmp BGCOLOR ; Do we set the same color? If we don't detect it, we loose one char on the screen for each bgcolor call with the same color
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bne out ; Yes
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ldy #$00
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sty BGCOLOR_CHANGE
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rts
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out:
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ldx BGCOLOR ; Get last color in order to return it
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sta BGCOLOR
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lda #$01 ; Notify the change color
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sta BGCOLOR_CHANGE
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txa ; Return previous color
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rts
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.endproc
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@@ -3,9 +3,8 @@
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;
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.export _clrscr
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.import OLD_CHARCOLOR, OLD_BGCOLOR, CHARCOLOR, BGCOLOR
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.import CHARCOLOR_CHANGE, CHARCOLOR, BGCOLOR, BGCOLOR_CHANGE
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.include "telestrat.inc"
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.proc _clrscr
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@@ -35,12 +34,13 @@
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dex
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stx SCRX
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stx CHARCOLOR_CHANGE
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stx BGCOLOR_CHANGE
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; X is equal to 0
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stx BGCOLOR
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stx OLD_BGCOLOR
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lda #$07
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sta CHARCOLOR
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sta BGCOLOR
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sta OLD_CHARCOLOR
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rts
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.endproc
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@@ -4,34 +4,39 @@
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; void cputc (char c);
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;
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.export _cputc, CHARCOLOR, CHARCOLOR_CHANGE, BGCOLOR, BGCOLOR_CHANGE
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.export _cputc, CHARCOLOR, OLD_CHARCOLOR, BGCOLOR, OLD_BGCOLOR
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.include "telestrat.inc"
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.proc _cputc
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ldx CHARCOLOR_CHANGE
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ldx CHARCOLOR
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cpx OLD_CHARCOLOR
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beq do_not_change_color_foreground
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stx OLD_CHARCOLOR ; Store CHARCOLOR into OLD_CHARCOLOR
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dec SCRX
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dec SCRX
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pha
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lda CHARCOLOR
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txa ; Swap X to A because, X contains CHARCOLOR
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BRK_TELEMON XFWR ; Change color on the screen (foreground)
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lda #$00
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sta CHARCOLOR_CHANGE
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inc SCRX
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pla
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do_not_change_color_foreground:
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ldx BGCOLOR_CHANGE
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ldx BGCOLOR
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cpx OLD_BGCOLOR
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beq do_not_change_color
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stx OLD_BGCOLOR
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dec SCRX ; Dec SCRX in order to place attribute before the right position
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pha
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lda BGCOLOR
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txa ; Swap X to A because, X contains CHARCOLOR
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ORA #%00010000 ; Add 16 because background color is an attribute between 16 and 23. 17 is red background for example
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BRK_TELEMON XFWR ; Change color on the screen (background)
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lda #$00
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sta BGCOLOR_CHANGE
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pla
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do_not_change_color:
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@@ -41,9 +46,9 @@ do_not_change_color:
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.bss
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CHARCOLOR:
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.res 1
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CHARCOLOR_CHANGE:
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OLD_CHARCOLOR:
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.res 1
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BGCOLOR:
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.res 1
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BGCOLOR_CHANGE:
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OLD_BGCOLOR:
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.res 1
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@@ -3,13 +3,8 @@
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;
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.export _gotox
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.import popa
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.importzp sp
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.include "telestrat.inc"
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.proc _gotox
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sta SCRX
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rts
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@@ -7,7 +7,7 @@
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.export gotoxy, _gotoxy, update_adscr
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.import popa, CHARCOLOR_CHANGE, BGCOLOR_CHANGE
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.import popa, OLD_CHARCOLOR, OLD_BGCOLOR
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.include "telestrat.inc"
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@@ -17,22 +17,24 @@ gotoxy: jsr popa ; Get Y
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; This function moves only the display cursor; it does not move the prompt position.
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; In telemon, there is a position for the prompt, and another for the cursor.
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sta SCRY
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jsr update_adscr ; Update adress video ram position when SCRY is modified
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jsr popa
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sta SCRX
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jsr update_adscr ; Update adress video ram position when SCRY et SCRX are modified
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; Force to put again attribute when it moves on the screen
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rts
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.endproc
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.proc update_adscr
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lda #$01
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sta CHARCOLOR_CHANGE
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sta BGCOLOR_CHANGE
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; Force to set again color if cursor moves
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; $FF is used because we know that it's impossible to have this value with a color
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; It prevents a bug : If bgcolor or textcolor is set to black for example with no char displays,
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; next cputsxy will not set the attribute if y coordinate changes
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lda #$FF
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sta OLD_CHARCOLOR
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sta OLD_BGCOLOR
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lda #<SCREEN
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sta ADSCRL
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@@ -10,8 +10,5 @@
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.proc _gotoy
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sta SCRY
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jsr update_adscr
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; We change the current line, it means that we need to put color attributes again.
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; That is not the case with _gotox because, it's on the same line attribute are already set
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rts
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.endproc
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@@ -3,25 +3,9 @@
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.export _textcolor
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.import CHARCOLOR
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.import CHARCOLOR_CHANGE
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.include "telestrat.inc"
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.proc _textcolor
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cmp CHARCOLOR ; Do we set the same color? If we don't detect it, we loose one char on the screen for each textcolor call with the same color
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bne out ; yes
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ldy #$00
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sty CHARCOLOR_CHANGE
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; Return last color
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rts
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out:
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ldx CHARCOLOR ; Get last color in order to return it
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sta CHARCOLOR
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lda #$01
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sta CHARCOLOR_CHANGE
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txa ; Return previous color
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rts
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.endproc
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