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https://github.com/badvision/lawless-legends.git
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Working on code to set font window boundaries. Also ported Andrew's word-break parser.
This commit is contained in:
Martin Haye
parent
9991cc1dc4
commit
0077d9ea05
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@ -36,6 +36,7 @@
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; Global definitions
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!source "../include/global.i"
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!source "../include/mem.i"
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!source "../include/plasma.i"
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DEBUG = 0 ; 1=some logging, 2=lots of logging
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@ -48,6 +49,9 @@ H_Adr = $15 ;for general indrct adrs indexing
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MskBytL = $16 ;Mask byte 1st
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MskBytH = $17 ;Mask byte 2nd
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MskByte = $18 ;Mask byte
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unused19 = $19
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PrsAdrL = $1A ;pointer for string parsing (lo)
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PrsAdrH = $1B ; (hi)
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GBasL = $26 ;LoByte HGR mem pg base adr EABABxxx
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GBasH = $27 ;HiByte PPPFGHCD for Y=ABCDEFGH P=page
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@ -57,17 +61,23 @@ InBufrX = $2FF ;Input Buffer index (length)
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Kbd_Rd = $C000 ;read keyboard
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Kbd_Clr = $C010 ;clear keyboard strobe
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;Initialize the font engine. Address of font in X=lo/Y=hi.
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Init JMP DoInit ;API call address
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;Set the address of the font
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SetFont JMP SetFont ;API call address
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;Set the window boundaries (byte-oriented bounds)
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SetWindow JMP SetWnd ;API call address
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;Clear the window
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ClearWindow JMP ClrHome ;API call address
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;Display a string, with proper word wrapping
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DisplayStr JMP DoParse ; API call address
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;When using ASCii character values, the values must be
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;tested for control codes before they can be plotted
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;using the plot character routine.
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PlotAsc JMP TestChr ;API call address
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; Clear the window
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ClearWindow JMP ClrHome
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;If you know which of the {0..110} bitmapped characters
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;you want plotted, you can bypass testing for control
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;codes, making this a faster way to plot.
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@ -105,8 +115,8 @@ ChrWdth !byte 0 ;character width (number of pixels)
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PltChar !byte 0 ;character to be plotted {0..110}
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AscChar !byte 0 ;Ascii Char value {$80..$FF}
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;Simple init routine. Just records the font address.
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DoInit STX Font0
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;Just record the font address.
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DoSetFont STA Font0
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STY Font0+1
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RTS
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@ -193,9 +203,6 @@ Flg2nd !byte $00 ;flag indicating 2nd byte is needed
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MlpIdx !byte $00 ;Main loop index into address table
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Flg8xcp !byte $00 ;flag: 8-pixel char exception
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FlgBchr !byte $00 ;flag: black character
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RtMrgnL !byte $00 ;
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RtMrgnH !byte $00 ;
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SvY !byte $00 ;
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PlotFnt LDX NoPlt_Flg
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BNE GetWdth
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@ -495,6 +502,60 @@ WtL_Prs LDA #0 ; if wait interrupted then do
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STA ChBflip
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RTS
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;Routine: Set window boundaries. Paramaters are pushed on the PLASMA
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;stack in the order Top, Bottom, Left, Right. But because that stack
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;grows downward, we see them in this order:
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SW_RT = 0
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SW_LT = 1
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SW_BTM = 2
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SW_TOP = 3
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SetWnd LDA evalStkL+SW_TOP,X ;get top coord (in units of 8-pixel lins)
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ASL ;multiply by 8
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ASL
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ASL
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STA CursY ;save the top Y coord
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STA TpMrgn ;also as the margin
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LDA evalStkL+SW_BTM,X ;get bottom coord (again in 8-pixel lines)
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ASL
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ASL ;multiply by 8
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ASL
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STA CursYb ;save the bottom Y coord
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STA BtMrgn ;also as the margin
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LDA evalStkL+SW_LT,X ;lo byte of left X
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STA CursXl
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LDA evalStkH+SW_LT,X ;hi byte of left X
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STA CursXh
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LDA evalStkL+SW_RT,X ;lo byte of right X
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STA CursXrl
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LDA evalStkH+SW_RT,X ;hi byte of right X
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STA CursXrh
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LDA CursXl ;sum the left X and right X
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CLC
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ADC CursXrl
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TAY ;save lo byte
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LDA CursXh ;sum the hi byte
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ADC CursXrh
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LSR ;divide by 2 to find the midpoint
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STA CursXmh ;save midpoint lo byte
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TYA
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ROR ;divide lo byte by 2, with bit from hi byte
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STA CursXml ;save midpoint hi byte
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LDA CursXrl ;need to figure out byte number of right side
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STA CursColL
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LDA CursXrh
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STA CursColH
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JSR GetOfst ;we have a routine for that
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LDA HgrHrz
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STA RtMrgn ;that's the right margin for scrolling
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LDA CursXl ;similarly we need to figure out the byte number of the left side
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STA CursColL
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LDA CursXh
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STA CursColH
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JSR GetOfst
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LDA HgrHrz
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STA LfMrgn ;that's the left margin for scrolling
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RTS
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;Routine: Scroll screen up 1 character line
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;This routine scrolls a window defined by
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;Left, Right, Top, Bottom - Margin parameters.
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@ -597,6 +658,98 @@ ClrChkF LDA BkgColor
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ClrChk1 STA ClrFlpF
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RTS
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;Routine: parser w/auto line break
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DoParse STA PrsAdrL
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STY PrsAdrH
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LDA CursXrl ;right coord
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SEC
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SBC CursXl ;minus left coord
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STA LinWdth ;equals line width (max of 255 for now)
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LDY #0 ;parse starting at beginning
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STY TtlWdth
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LDA (PrsAdrL),Y ;Get the length
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STA Pa_Len
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INY
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Pa_Lp0 STY Pa_iBgn
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Pa_Lp1 STY Pa_iSv
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LDA (PrsAdrL),Y ;Get the character
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STA AscChar
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CPY Pa_Len ;reached end of string?
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BCC Pa_Go
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BEQ Pa_Go
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JMP ParsDn
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Pa_Go ORA #$80 ;set hi bit in case
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CMP #$8D
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BEQ Pa_Spc
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LDX #1
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STX NoPlt_Flg ;set NO PLOT flag
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JSR PlotAsc ;do plot routine to strip off Ctrl
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LDX #0 ;codes & get char width
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STX NoPlt_Flg ;clear NO PLOT flag
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LDA ChrWdth
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BEQ Pa_Tskp
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SEC ;use SEC to always 'add 1'
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ADC TtlWdth
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STA TtlWdth
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Pa_Tskp LDA AscChar
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CMP #' '
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BEQ Pa_Spc
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LDA TtlWdth
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CMP LinWdth
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BPL Pa_ToFr ;too far! force CR/LF
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LDY Pa_iSv
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INY
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JMP Pa_Lp1
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Pa_ToFr LDA #$8D
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STA AscChar
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JSR PlotAsc
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LDY #0
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STY TtlWdth
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LDY Pa_iBgn
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JMP Pa_Lp0
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;
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Pa_Spc LDY Pa_iSv
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STY Pa_iEnd
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LDY Pa_iBgn
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CPY Pa_iEnd
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BEQ Pa_Dn2
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Pa_Lp2 STY Pa_iSv
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LDA (PrsAdrL),Y ;Get the character
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STA AscChar ;**add code
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JSR PlotAsc ;if space & at left then don't plot
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LDY Pa_iSv
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INY
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CPY Pa_iEnd
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BEQ Pa_Dn2
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BNE Pa_Lp2
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Pa_Dn2 STY Pa_iSv
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LDA TtlWdth
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CMP LinWdth
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BPL Pa_Dn3
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LDA (PrsAdrL),Y ;Get the character
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CMP #$8D
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BEQ Pa_Dn3
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STA AscChar
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JSR PlotAsc
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JMP Pa_Dn4
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Pa_Dn3 LDY Pa_iSv
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INY
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STY Pa_iBgn
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JMP Pa_ToFr
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Pa_Dn4 LDY Pa_iSv
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INY
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JMP Pa_Lp0
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ParsDn LDY #7
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STY CursXrl
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RTS
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;
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LinWdth !byte 112 ;max line width
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TtlWdth !byte $00 ;total word width
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Pa_iBgn !byte $00 ;parser indx begin
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Pa_iEnd !byte $00 ;parser indx end
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Pa_iSv !byte $00 ;Save Msg Y index
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Pa_Len !byte $00 ;length of string
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;Center Justify
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;Start with the cursor in the center column,
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;Get width of letter to be plotted, use ticker scrolling
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@ -5,6 +5,7 @@
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fontEngine = $E000
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SetFont = fontEngine
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PlotAsc = SetFont+3
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ClearWindow = PlotAsc+3
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SetFont = fontEngine
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SetWindow = SetFont+3
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ClearWindow = SetWindow+3
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DisplayStr = ClearWindow+3
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@ -457,17 +457,6 @@ asm loader
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rts
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Set up the font engine
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// Params: pFont
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asm initFontEngine
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+asmPlasm 1
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ldy evalStkH,x ; hi byte in Y
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lda evalStkL,x ; lo byte in X
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tax
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jmp SetFont
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Jump straight to the system monitor
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// Params: None
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@ -484,12 +473,34 @@ asm brk
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brk
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Set up the font engine
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// Params: pFont
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asm setFont
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+asmPlasm 1
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bit setLcRW+lcBank2
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bit setLcRW+lcBank2
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jmp SetFont
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Use the font engine to clear the current text window
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asm setWindow
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+asmPlasm 4
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bit setLcRW+lcBank2
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bit setLcRW+lcBank2
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jmp SetWindow
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Use the font engine to clear the current text window
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// Params: None
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asm clearWindow
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+asmPlasm 0
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jmp ClearWindow
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+asmPlasm 0
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bit setLcRW+lcBank2
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bit setLcRW+lcBank2
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jmp ClearWindow
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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@ -499,24 +510,7 @@ asm displayStr
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+asmPlasm 1
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bit setLcRW+lcBank2
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bit setLcRW+lcBank2
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sta pTmp ; save string pointer lo
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sty pTmp+1 ; and hi
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ldy #0
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lda (pTmp),y ; get length
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beq ++ ; if zero, get out
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- pha ; save length counter
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inc pTmp ; bump to next char
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bne +
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inc pTmp+1 ; page bump
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+ ldy #0
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lda (pTmp),y ; fetch character
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jsr PlotAsc ; and plot it
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pla ; retrieve length counter
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sec
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sbc #1 ; decrement
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bne - ; go until it hits zero
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++ ; all done
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rts
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jmp DisplayStr
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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@ -706,15 +700,6 @@ def loadFrameImg()
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end
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///////////////////////////////////////////////////////////////////////////////////////////////////
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def setWindow(top, btm, lft, rt)
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^wndtop = top
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^wndbtm = btm
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^wndleft = lft
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^wndwdth = rt
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^cursv = ^wndtop
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^cursh = ^wndleft
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end
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// Window for the map name bar
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def setWindow1()
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setWindow(1, 2, 5, 17)
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@ -789,8 +774,8 @@ def initMap(x, y, dir)
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loadFrameImg()
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loader(FINISH_LOAD, MAIN_MEM, 1) // 1 = keep open
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// Start up the font engine
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initFontEngine(pFont)
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// Tell the font engine where to find its font
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setFont(pFont)
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// Start up the display engine with map data and starting position. This will also load and
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// init the script module, if any, which will end up calling us back at the setScriptInfo
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