mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-01 05:31:52 +00:00
mist: add playing info on loading page
This commit is contained in:
Vince Weaver
parent
012d449534
commit
89404fe833
22
mist/TODO
22
mist/TODO
@ -1,6 +1,8 @@
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+ Insert floppy #100 joke?
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+ double link noise (once when leave, once when get there?)
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+ allow turning around
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Make game winnable:
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+ Allow access to all marker switches
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+ Track state of marker switches (draw them properly?)
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@ -29,3 +31,23 @@ Marker Switches (8):
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Fireplace:
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+ 8x6 grid
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16 more pictures?
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+ cabin switch
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+ generator switch
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+ close-in clock
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+ clock with gears up
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+ clock switch
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+ dentist switch
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+ looking back from dentist switch
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+ spaceship switch
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+ open gear
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+ gear linking book
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+ fireplace close
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+ inside fireplace
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+ fireplace puzzle
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+ bookshelf close?
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+ book?
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+ atrus at end
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@ -1,343 +0,0 @@
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; -----------------------------------------------------------------------------
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; Decompress raw LZSA2 block.
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; Create one with lzsa -r -f2 <original_file> <compressed_file>
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;
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; in:
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; * LZSA_SRC_LO and LZSA_SRC_HI contain the compressed raw block address
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; * LZSA_DST_LO and LZSA_DST_HI contain the destination buffer address
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;
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; out:
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; * LZSA_DST_LO and LZSA_DST_HI contain the last decompressed byte address, +1
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;
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; -----------------------------------------------------------------------------
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; Backward decompression is also supported, use lzsa -r -b -f2 <original_file> <compressed_file>
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; To use it, also define BACKWARD_DECOMPRESS=1 before including this code!
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;
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; in:
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; * LZSA_SRC_LO/LZSA_SRC_HI must contain the address of the last byte of compressed data
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; * LZSA_DST_LO/LZSA_DST_HI must contain the address of the last byte of the destination buffer
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;
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; out:
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; * LZSA_DST_LO/LZSA_DST_HI contain the last decompressed byte address, -1
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;
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; -----------------------------------------------------------------------------
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;
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; Copyright (C) 2019 Emmanuel Marty
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;
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; This software is provided 'as-is', without any express or implied
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; warranty. In no event will the authors be held liable for any damages
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; arising from the use of this software.
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;
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; Permission is granted to anyone to use this software for any purpose,
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; including commercial applications, and to alter it and redistribute it
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; freely, subject to the following restrictions:
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;
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; 1. The origin of this software must not be misrepresented; you must not
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; claim that you wrote the original software. If you use this software
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; in a product, an acknowledgment in the product documentation would be
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; appreciated but is not required.
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; 2. Altered source versions must be plainly marked as such, and must not be
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; misrepresented as being the original software.
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; 3. This notice may not be removed or altered from any source distribution.
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; -----------------------------------------------------------------------------
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;NIBCOUNT = $FC ; zero-page location for temp offset
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decompress_lzsa2:
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; page to decompress to in a
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sta LZSA_DST_HI
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ldy #$00
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sty LZSA_DST_LO
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sty NIBCOUNT
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decode_token:
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jsr getsrc ; read token byte: XYZ|LL|MMM
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pha ; preserve token on stack
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and #$18 ; isolate literals count (LL)
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beq no_literals ; skip if no literals to copy
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lsr ; shift literals count into place
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lsr
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lsr
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cmp #$03 ; LITERALS_RUN_LEN_V2?
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bcc prepare_copy_literals ; if less, count is directly embedded in token
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jsr getnibble ; get extra literals length nibble
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; add nibble to len from token
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adc #$02 ; (LITERALS_RUN_LEN_V2) minus carry
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cmp #$12 ; LITERALS_RUN_LEN_V2 + 15 ?
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bcc prepare_copy_literals ; if less, literals count is complete
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jsr getsrc ; get extra byte of variable literals count
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; the carry is always set by the CMP above
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; GETSRC doesn't change it
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sbc #$EE ; overflow?
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prepare_copy_literals:
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tax
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bcc prepare_copy_literals_high ; if not, literals count is complete
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; handle 16 bits literals count
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; literals count = directly these 16 bits
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jsr getlargesrc ; grab low 8 bits in X, high 8 bits in A
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tay ; put high 8 bits in Y
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prepare_copy_literals_high:
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txa
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beq copy_literals
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iny
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copy_literals:
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jsr getput ; copy one byte of literals
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dex
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bne copy_literals
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dey
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bne copy_literals
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no_literals:
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pla ; retrieve token from stack
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pha ; preserve token again
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asl
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bcs repmatch_or_large_offset ; 1YZ: rep-match or 13/16 bit offset
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asl ; 0YZ: 5 or 9 bit offset
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bcs offset_9_bit
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; 00Z: 5 bit offset
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ldx #$FF ; set offset bits 15-8 to 1
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jsr getcombinedbits ; rotate Z bit into bit 0, read nibble for bits 4-1
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ora #$E0 ; set bits 7-5 to 1
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bne got_offset_lo ; go store low byte of match offset and prepare match
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offset_9_bit: ; 01Z: 9 bit offset
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;;asl ; shift Z (offset bit 8) in place
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rol
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rol
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and #$01
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eor #$FF ; set offset bits 15-9 to 1
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bne got_offset_hi ; go store high byte, read low byte of match offset and prepare match
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; (*same as JMP GOT_OFFSET_HI but shorter)
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repmatch_or_large_offset:
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asl ; 13 bit offset?
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bcs repmatch_or_16_bit ; handle rep-match or 16-bit offset if not
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; 10Z: 13 bit offset
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jsr getcombinedbits ; rotate Z bit into bit 8, read nibble for bits 12-9
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adc #$DE ; set bits 15-13 to 1 and substract 2 (to substract 512)
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bne got_offset_hi ; go store high byte, read low byte of match offset and prepare match
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; (*same as JMP GOT_OFFSET_HI but shorter)
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repmatch_or_16_bit: ; rep-match or 16 bit offset
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;;asl ; XYZ=111?
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bmi rep_match ; reuse previous offset if so (rep-match)
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; 110: handle 16 bit offset
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jsr getsrc ; grab high 8 bits
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got_offset_hi:
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tax
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jsr getsrc ; grab low 8 bits
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got_offset_lo:
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sta offslo ; store low byte of match offset
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stx offshi ; store high byte of match offset
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rep_match:
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.ifdef BACKWARD_DECOMPRESS
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; Backward decompression - substract match offset
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sec ; add dest + match offset
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lda putdst+1 ; low 8 bits
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offslo = *+1
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sbc #$AA
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sta copy_match_loop+1 ; store back reference address
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lda putdst+2
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offshi = *+1
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sbc #$AA ; high 8 bits
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sta copy_match_loop+2 ; store high 8 bits of address
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sec
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.else
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; Forward decompression - add match offset
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clc ; add dest + match offset
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lda putdst+1 ; low 8 bits
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offslo = *+1
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adc #$AA
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sta copy_match_loop+1 ; store back reference address
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offshi = *+1
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lda #$AA ; high 8 bits
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adc putdst+2
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sta copy_match_loop+2 ; store high 8 bits of address
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.endif
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pla ; retrieve token from stack again
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and #$07 ; isolate match len (MMM)
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adc #$01 ; add MIN_MATCH_SIZE_V2 and carry
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cmp #$09 ; MIN_MATCH_SIZE_V2 + MATCH_RUN_LEN_V2?
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bcc prepare_copy_match ; if less, length is directly embedded in token
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jsr getnibble ; get extra match length nibble
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; add nibble to len from token
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adc #$08 ; (MIN_MATCH_SIZE_V2 + MATCH_RUN_LEN_V2) minus carry
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cmp #$18 ; MIN_MATCH_SIZE_V2 + MATCH_RUN_LEN_V2 + 15?
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bcc prepare_copy_match ; if less, match length is complete
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jsr getsrc ; get extra byte of variable match length
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; the carry is always set by the CMP above
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; GETSRC doesn't change it
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sbc #$E8 ; overflow?
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prepare_copy_match:
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tax
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bcc prepare_copy_match_y ; if not, the match length is complete
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beq decompression_done ; if EOD code, bail
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; Handle 16 bits match length
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jsr getlargesrc ; grab low 8 bits in X, high 8 bits in A
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tay ; put high 8 bits in Y
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prepare_copy_match_y:
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txa
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beq copy_match_loop
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iny
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copy_match_loop:
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lda $AAAA ; get one byte of backreference
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jsr putdst ; copy to destination
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.ifdef BACKWARD_DECOMPRESS
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; Backward decompression -- put backreference bytes backward
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lda copy_match_loop+1
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bne getmatch_done
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dec copy_match_loop+2
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getmatch_done:
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dec copy_match_loop+1
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.else
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; Forward decompression -- put backreference bytes forward
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inc copy_match_loop+1
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bne getmatch_done
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inc copy_match_loop+2
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getmatch_done:
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.endif
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dex
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bne copy_match_loop
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dey
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bne copy_match_loop
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jmp decode_token
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getcombinedbits:
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eor #$80
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asl
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php
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jsr getnibble ; get nibble into bits 0-3 (for offset bits 1-4)
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plp ; merge Z bit as the carry bit (for offset bit 0)
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combinedbitz:
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rol ; nibble -> bits 1-4; carry(!Z bit) -> bit 0 ; carry cleared
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decompression_done:
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rts
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getnibble:
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nibbles = *+1
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lda #$AA
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lsr NIBCOUNT
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bcs has_nibbles
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inc NIBCOUNT
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jsr getsrc ; get 2 nibbles
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sta nibbles
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lsr
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lsr
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lsr
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lsr
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sec
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has_nibbles:
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and #$0F ; isolate low 4 bits of nibble
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rts
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.ifdef BACKWARD_DECOMPRESS
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; Backward decompression -- get and put bytes backward
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getput:
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jsr getsrc
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putdst:
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LZSA_DST_LO = *+1
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LZSA_DST_HI = *+2
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sta $AAAA
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lda putdst+1
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bne putdst_done
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dec putdst+2
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putdst_done:
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dec putdst+1
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rts
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getlargesrc:
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jsr getsrc ; grab low 8 bits
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tax ; move to X
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; fall through grab high 8 bits
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getsrc:
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LZSA_SRC_LO = *+1
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LZSA_SRC_HI = *+2
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lda $AAAA
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pha
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lda getsrc+1
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bne getsrc_done
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dec getsrc+2
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getsrc_done:
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dec getsrc+1
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pla
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rts
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.else
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; Forward decompression -- get and put bytes forward
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getput:
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jsr getsrc
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putdst:
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LZSA_DST_LO = *+1
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LZSA_DST_HI = *+2
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sta $AAAA
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inc putdst+1
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bne putdst_done
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inc putdst+2
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putdst_done:
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rts
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getlargesrc:
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jsr getsrc ; grab low 8 bits
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tax ; move to X
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; fall through grab high 8 bits
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getsrc:
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LZSA_SRC_LO = *+1
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LZSA_SRC_HI = *+2
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lda $AAAA
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inc getsrc+1
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bne getsrc_done
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inc getsrc+2
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getsrc_done:
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rts
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.endif
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112
mist/gr_unrle.s
112
mist/gr_unrle.s
@ -1,112 +0,0 @@
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;=================
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; load RLE image
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;=================
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; Output is A:00 (assume page aligned)
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; Input is in GBASH/GBASL
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; format: first byte=xsize
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; A0,X,Y means run of X bytes of Y color
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; A1 means end of file
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; A2-AF,X means run of low nibble, X color
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; if high nibble not A: just display color
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; CV = current Y
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; CH = max xsize (usually 40)
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; TEMP = page
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; TEMPY= current X
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load_rle_gr:
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sec
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sbc #4 ; adjust page to write to
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; to match gr_offsets
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sta TEMP
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ldy #$0 ; init Y to 0
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sty CV
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jsr load_and_increment ; load xsize
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sta CH
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jsr unrle_new_y
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rle_loop:
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jsr load_and_increment
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tax
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cmp #$A1 ; if 0xa1
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beq rle_done ; we are done
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and #$f0 ; mask
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cmp #$a0 ; see if special AX
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beq decompress_special
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; not special, just color
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txa ; put color back in A
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ldx #$1 ; only want to print 1
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bne decompress_run
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decompress_special:
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txa ; put read value back in A
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and #$0f ; check if was A0
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bne decompress_color ; if A0 need to read run, color
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decompress_large:
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jsr load_and_increment ; run length now in A
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decompress_color:
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tax ; put runlen into X
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jsr load_and_increment ; get color into A
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decompress_run:
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rle_run_loop:
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sta (BASL),y ; write out the value
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inc BASL
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dec TEMPY
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bne rle_not_eol ; if less then keep going
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; if here, we are > max_X
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inc CV
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inc CV
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pha
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jsr unrle_new_y
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pla
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rle_not_eol:
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dex
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bne rle_run_loop ; if not zero, keep looping
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beq rle_loop ; and branch always
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rle_done:
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lda #$15 ; move the cursor somewhere sane
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sta CV
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rts
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load_and_increment:
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lda (GBASL),Y
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inc GBASL
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bne lai_no_oflo
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inc GBASH
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lai_no_oflo:
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rts
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unrle_new_y:
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ldy CV
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lda gr_offsets,Y
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sta BASL
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lda gr_offsets+1,Y
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clc
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adc TEMP ; adjust for page
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sta BASH
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lda CH
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sta TEMPY
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ldy #0
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rts
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@ -1,7 +1,14 @@
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5 HOME
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10 PRINT " LOADING MIST V0.2"
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90 PRINT
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100 PRINT" ______"
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100 PRINT" A \/\/\/ SOFTWARE PRODUCTION"
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110 PRINT
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20 PRINT
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30 PRINT " ______"
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40 PRINT " A \/\/\/ SOFTWARE PRODUCTION"
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50 PRINT
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60 PRINT "CONTROLS: ARROWS OR WASD"
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70 PRINT " ENTER MOVES/ACTION"
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80 PRINT
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90 PRINT "SPOILERS (BECAUSE NOT ALL IMPLEMENTED)"
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100 PRINT " CLOCK: 2:40 2-2-1"
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105 PRINT " CLICK ALL SWITCHES EXCEPT DOCK"
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110 PRINT " FIREPLACE PATTERN IN BOOK"
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120 PRINT CHR$(4);"BRUN LOADER"
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