xmas2018: add merry christmas screen

This commit is contained in:
Vince Weaver 2018-12-12 15:38:30 -05:00
parent ee0145aef8
commit 9a6ae337f3
3 changed files with 184 additions and 10 deletions

View File

@ -23,7 +23,8 @@ xmas2018.o: xmas2018.s \
vapor_lock.s delay_a.s wait_keypress.s \
mockingboard.s \
wreath.s wreath.img.lz4 \
ball.s ball.img.lz4
ball.s ball.img.lz4 \
merry.s merry.img.lz4
ca65 -o xmas2018.o xmas2018.s -l xmas2018.lst
@ -32,17 +33,15 @@ xmas2018.o: xmas2018.s \
HELLO: hello.bas
../asoft_basic-utils/tokenize_asoft < hello.bas > HELLO
#c64.img.lz4: c64.img
# lz4 -f -16 c64.img
#
#c64.img: c64_updated.png
# ../hgr-utils/png2hgr c64_updated.png > c64.img
####
#D_HGRC.BIN: d_hgr.bmp
# $(B2D) d_hgr.bmp HGR -d
merry.img.lz4: merry.img
lz4 -f -16 merry.img
merry.img: merry_christmas.png
../hgr-utils/png2hgr merry_christmas.png > merry.img
####
wreath.img.lz4: wreath.img
lz4 -f -16 wreath.img

168
xmas_2018/merry.s Normal file
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@ -0,0 +1,168 @@
;=====================================
; XMAS2018 -- Merry Christmas Part
;=====================================
merry:
;===================
; init screen
;===================
; init vars
lda #15
sta XPOS
lda #38
sta YPOS
lda #0
sta FRAME
sta FRAMEH
;=============================
; Load graphic hgr
lda #<merry_hgr
sta LZ4_SRC
lda #>merry_hgr
sta LZ4_SRC+1
lda #<(merry_hgr_end-8) ; skip checksum at end
sta LZ4_END
lda #>(merry_hgr_end-8) ; skip checksum at end
sta LZ4_END+1
lda #<$2000
sta LZ4_DST
lda #>$2000
sta LZ4_DST+1
jsr lz4_decode
;==============================
; setup graphics for vapor lock
;==============================
jsr vapor_lock ; 6
; vapor lock returns with us at beginning of hsync in line
; 114 (7410 cycles), so with 5070 lines to go
; so we have 5070 + 4550 = 9620 to kill
; FIXME: clear page0/page1 screens
; jsr gr_copy_to_current ; 6+ 9292
; now we have 322 left
; GR part
; bit HIRES ; 4
bit SET_GR ; 4
bit FULLGR ; 4
; 9620
; -8 mode set
; - 3 for jmp
;=======
; 9609
; Try X=239 Y=8 cycles=9609
ldy #8 ; 2
meloopA:ldx #239 ; 2
meloopB:dex ; 2
bne meloopB ; 2nt/3
dey ; 2
bne meloopA ; 2nt/3
jmp merry_begin_loop
.align $100
;================================================
; Merry Christmas Loop
;================================================
; each scan line 65 cycles
; 1 cycle each byte (40cycles) + 25 for horizontal
; Total of 12480 cycles to draw screen
; Vertical blank = 4550 cycles (70 scan lines)
; Total of 17030 cycles to get back to where was
merry_begin_loop:
merry_display_loop:
; (40*65)-4 = 2596
; 40 lines of LORES
bit LORES ; 4
; Try X=42 Y=12 cycles=2593 R3
lda $0 ; nop ; 3
ldy #12 ; 2
meloopC:ldx #42 ; 2
meloopD:dex ; 2
bne meloopD ; 2nt/3
dey ; 2
bne meloopC ; 2nt/3
; rest of screen is hires page0
; (152*65)-4 = 9876
bit HIRES ; 4
; Try X=13 Y=139 cycles=9870 R6
nop
nop
nop
ldy #139 ; 2
meloopE:ldx #13 ; 2
meloopF:dex ; 2
bne meloopF ; 2nt/3
dey ; 2
bne meloopE ; 2nt/3
;======================================================
; We have 4550 cycles in the vblank, use them wisely
;======================================================
; do_nothing should be 4550
; -10 keypress
; ===========
; 4540
; jsr play_music ; 6+1032
; Try X=9 Y=89 cycles=4540
ldy #89 ; 2
meloop1:ldx #9 ; 2
meloop2:dex ; 2
bne meloop2 ; 2nt/3
dey ; 2
bne meloop1 ; 2nt/3
; no keypress = 10+(24) = 34
lda KEYPRESS ; 4
bpl me_no_keypress ; 3
; -1
jmp me_handle_keypress ; 3
me_no_keypress:
jmp merry_display_loop ; 3
me_handle_keypress:
bit KEYRESET ; clear keypress ; 4
rts ; 6

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@ -48,6 +48,8 @@ apple_iie:
jsr ball
jsr merry
;==================
; Game over
;==================
@ -59,6 +61,7 @@ game_over_man:
.align $100
.include "wreath.s"
.include "ball.s"
.include "merry.s"
.include "lz4_decode.s"
.include "gr_offsets.s"
.include "gr_hline.s"
@ -106,4 +109,8 @@ ball_hgr:
.incbin "ball.img.lz4",11
ball_hgr_end:
merry_hgr:
.incbin "merry.img.lz4",11
merry_hgr_end: