mirror of
https://github.com/badvision/lawless-legends.git
synced 2025-01-12 12:30:07 +00:00
Mem manager fixes, and added ground/sky/map changing to ray caster.
This commit is contained in:
Martin Haye
parent
83f0e24afa
commit
e506a361bf
@ -32,9 +32,6 @@
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jmp main_dispatch
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jmp aux_dispatch
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DEBUG = 0
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.include "../include/debug.i"
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;------------------------------------------------------------------------------
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; Variables
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targetAddr:
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@ -52,6 +49,10 @@ curPartition:
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partitionFileRef:
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.byte 0
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;------------------------------------------------------------------------------
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DEBUG = 0
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.include "../include/debug.i"
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;------------------------------------------------------------------------------
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grabSegment:
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; Output: Y-reg = segment grabbed
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@ -276,9 +277,10 @@ fatalError:
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jsr orCout
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iny
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bne :-
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:
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.if DEBUG
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; Print call stack
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: ldy #0
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ldy #0
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: lda stackMsg,y
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beq :+
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jsr orCout
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@ -548,10 +550,10 @@ reset:
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jmp nextLoaderVec ; and allow chained loaders to reset also
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@inactivate:
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lda tSegType,x ; get flag byte for this segment
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tax
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tay
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and #$40 ; segment locked?
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bne @next ; yes, skip it
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txa ; no, get back flags
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tya ; no, get back flags
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and #$7F ; mask off the 'active' bit
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sta tSegType,x ; save it back
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@next:
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@ -659,8 +661,7 @@ shared_alloc:
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lda #$80 ; flag segment as active, not locked, not holding a resource
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sta tSegType,x ; save the flags and type
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lda #0
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sta targetAddr ; clear targetAddr for next future request
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sta targetAddr+1
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sta targetAddr+1 ; clear target address for next time
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sta tSegResNum,x ; might as well clear resource number too
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lda tSegAdrLo,x ; get address for return
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ldy tSegAdrHi,x ; all 16 bits
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@ -745,6 +746,7 @@ shared_queueLoad:
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sty resNum ; save resource number
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jsr scanForResource ; scan to see if we already have this resource in mem
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beq @notFound ; nope, pass to next loader
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stx segNum ; save seg num for later
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lda tSegType,x ; get flags
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ora #$80 ; reactivate if necessary
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sta tSegType,x ; save modified flag
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@ -752,7 +754,23 @@ shared_queueLoad:
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tay ; in Y for return
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lda tSegAdrLo,x ; addr lo
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tax ; in X for return
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lda targetAddr+1 ; was specific address requested?
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beq @noChkTarg ; if not, skip target check
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cpx targetAddr ; verify addr lo
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bne @redo
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cpy targetAddr ; verify addr hi
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bne @redo
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@noChkTarg:
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lda #0
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sta targetAddr+1 ; clear targ addr for next time
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rts ; all done
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@redo:
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; different address requested than what we have: clear current block.
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lda #0
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ldx segNum
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sta tSegType,x
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sta tSegResNum,x
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; fall through to re-load the resource
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@notFound:
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ldx resType ; restore res type
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ldy resNum ; and number
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@ -780,6 +798,7 @@ diskLoader:
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;------------------------------------------------------------------------------
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openPartition:
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DEBUG_STR "Opening part file."
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; complete the partition file name
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lda curPartition
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clc
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@ -1033,7 +1052,8 @@ disk_finishLoad:
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bne @scan ; always taken
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@keepOpenChk:
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lda #11 ; self-modified to 0 or 1 at start of routine
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beq @keepOpen
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bne @keepOpen
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DEBUG_STR "Closing part file."
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jsr mli ; now that we're done loading, we can close the partition file
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.byte MLI_CLOSE
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.word @closeParams
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@ -5,10 +5,6 @@
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; Constants
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TOP_LINE = $2180 ; 24 lines down from top
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NLINES = 128
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SKY_COLOR_E = $22 ; blue
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SKY_COLOR_O = $20 ; hi-bit black
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GROUND_COLOR_E = $28 ; orange
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GROUND_COLOR_O = $20 ; hi-bit black
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TEX_SIZE = $555 ; 32x32 + 16x16 + 8x8 + 4x4 + 2x2 + 1x1
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; Byte offset for each pixel in the blit unroll
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@ -1,6 +1,8 @@
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.org $6000
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start:
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; This code is written bottom-up. That is, simple routines first,
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; then routines that call those to build complexity. The main
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; code is at the very end. We jump to it now.
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@ -23,6 +25,32 @@ frontBuf: .byte 0 ; (value 0 or 1)
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mapHeader: .word 0 ; map with header first
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mapBase: .word 0 ; first byte after the header
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mapRayOrigin: .word 0
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mapNum: .byte 1
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; Sky / ground colors
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skyGndTbl1:
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.byte $20 ; hi-bit black
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.byte $20 ; hi-bit black
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.byte $20 ; hi-bit black
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.byte $22 ; blue
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.byte $28 ; orange
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.byte $2A ; hi-bit white
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.byte $2A ; hi-bit white
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.byte $2A ; hi-bit white
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skyGndTbl2:
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.byte $20 ; hi-bit black
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.byte $22 ; blue
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.byte $28 ; orange
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.byte $22 ; blue
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.byte $28 ; orange
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.byte $22 ; blue
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.byte $28 ; orange
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.byte $2A ; hi-bit white
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skyColorEven: .byte $20
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skyColorOdd: .byte $22
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gndColorEven: .byte $20
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gndColorOdd: .byte $28
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;-------------------------------------------------------------------------------
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; Multiply two bytes, quickly but somewhat inaccurately, using logarithms.
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@ -732,18 +760,18 @@ clearBlit:
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ldx #BLIT_OFF6
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jmp @clear2
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@clear1:
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ldy #GROUND_COLOR_E
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lda #SKY_COLOR_E
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ldy gndColorEven
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lda skyColorEven
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jsr clrBlitRollO
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ldy #GROUND_COLOR_O
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lda #SKY_COLOR_O
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ldy gndColorOdd
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lda skyColorOdd
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jmp clrBlitRollE
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@clear2:
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ldy #GROUND_COLOR_E
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lda #SKY_COLOR_E
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ldy gndColorEven
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lda skyColorEven
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jsr clrBlitRollE
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ldy #GROUND_COLOR_O
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lda #SKY_COLOR_O
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ldy gndColorOdd
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lda skyColorOdd
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jmp clrBlitRollO
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; Construct the pixel decoding tables
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@ -857,6 +885,12 @@ setBackBuf:
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;-------------------------------------------------------------------------------
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initMem:
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DEBUG_STR "Raycast: setting up memory."
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lda #LOCK_MEMORY ; lock ourselves in before reset
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ldx #<start
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ldy #>start
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jsr mainLoader
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lda #RESET_MEMORY ; clear everything else
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jsr mainLoader
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; Reserve memory for our tables
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lda #SET_MEM_TARGET
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ldx #<tableStart
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@ -876,14 +910,6 @@ initMem:
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ldx #RES_TYPE_CODE
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ldy #2 ; hard coded for now: code #2 is texture expander
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jsr auxLoader
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; Load the map into main mem
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DEBUG_STR "Loading map."
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lda #QUEUE_LOAD
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ldx #RES_TYPE_3D_MAP
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ldy #1 ; map 1 is for now the only map
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jsr mainLoader
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stx mapHeader
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sty mapHeader+1
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DEBUG_STR "Loading frame."
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; Load the UI frame
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lda #SET_MEM_TARGET
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@ -894,6 +920,14 @@ initMem:
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ldx #RES_TYPE_SCREEN
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ldy #1
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jsr mainLoader
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; Load the map into main mem
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DEBUG_STR "Loading map."
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lda #QUEUE_LOAD
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ldx #RES_TYPE_3D_MAP
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ldy mapNum ; hard-coded for now
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jsr mainLoader
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stx mapHeader
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sty mapHeader+1
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; Force the loads to complete now
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lda #FINISH_LOAD
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ldx #1 ; keep queue open
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@ -1208,6 +1242,50 @@ copyScreen:
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bne @outer
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rts
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;-------------------------------------------------------------------------------
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setGndColor:
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jsr readKbdColor
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bcs :+
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sta gndColorEven
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stx gndColorOdd
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: rts
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setSkyColor:
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jsr readKbdColor
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bcs :+
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sta skyColorEven
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stx skyColorOdd
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: rts
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readKbdColor:
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jsr rdkey
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and #$7F
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sec
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sbc #'0'
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bcc @bad
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cmp #8
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bcs @bad
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tay
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ldx skyGndTbl1,y
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lda skyGndTbl2,y
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rts
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@bad:
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jsr bell
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sec
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rts
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;-------------------------------------------------------------------------------
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nextMap:
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ldx mapNum
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inx
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cpx #4
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bne :+
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ldx #1
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: stx mapNum
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bit setText
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bit page1
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jmp main ; re-init everything
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;-------------------------------------------------------------------------------
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; The real action
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main:
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@ -1263,8 +1341,21 @@ main:
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jsr rotateRight
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jmp @nextFrame
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: cmp #$1B ; ESC to exit
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beq @done
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jmp @pauseLup ; unrecognized key: go back and get another one.
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bne :+
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jmp @done
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: cmp #'G' ; G to set ground color
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bne :+
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jsr setGndColor
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jmp @nextFrame
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: cmp #'K' ; K to set sky color
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bne :+
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jsr setSkyColor
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jmp @nextFrame
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: cmp #'M' ; M to switch maps
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bne :+
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jmp nextMap
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: jsr bell ; beep for unrecognized key
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jmp @pauseLup ; go back and get another one.
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@done:
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; back to text mode
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bit setText
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