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megademo: add leaving screen
This commit is contained in:
Vince Weaver
parent
3c1ad19fc6
commit
78896d009f
@ -32,6 +32,7 @@ megademo.o: megademo.s \
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starring.s starring1.inc starring2.inc starring3.img.lz4\
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starring_people.s fs.inc FS_HGRC.BIN.lz4 deater.inc DEATER_HGRC.BIN.lz4\
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check_email.s email_40_96.inc \
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leaving.s leaving.inc \
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bird_mountain.s \
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waterfall.s gr_unrolled_copy.s waterfall_page1.inc waterfall_page2.inc \
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takeoff.s takeoff.inc takeoff.img.lz4 \
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@ -76,6 +77,10 @@ starring3.img: ./starring_3_hgr.png
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../hgr-utils/png2hgr starring_3_hgr.png > starring3.img
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####
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leaving.inc: ./leaving.png
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$(PNG_TO_RLE) asm ./leaving.png leaving > leaving.inc
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####
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takeoff.inc: ./takeoff.png
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$(PNG_TO_RLE) asm ./takeoff.png takeoff > takeoff.inc
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@ -93,6 +93,37 @@ bird_mountain:
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ldy #10 ; 6 lines ; 2
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jsr clear_page_loop ; 2693
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jsr draw_moon_sky ; 6+54
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; vapor lock returns with us at beginning of hsync in line
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; 114 (7410 cycles), so with 5070 cycles to go
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; 5070+4550 = 9620
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; -2757 (draw text)
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; ===========
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; 6863
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;; Try X=97 Y=14 cycles=6875
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; Try X=136 Y=10 cycles=6861 R2
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nop
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ldy #10 ; 2
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bmloopA:ldx #136 ; 2
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bmloopB:dex ; 2
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bne bmloopB ; 2nt/3
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dey ; 2
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bne bmloopA ; 2nt/3
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jmp bm_display_loop
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;====================
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; draw moon sky
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; 54 cycles
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draw_moon_sky:
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; 1 2
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; 0123456789abcdef0123456789abcdef0123456
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;line1:.asciiz " * . " $400
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@ -120,27 +151,8 @@ bird_mountain:
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sta $583 ; 4
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;============
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; 18
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rts ; 6
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; vapor lock returns with us at beginning of hsync in line
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; 114 (7410 cycles), so with 5070 cycles to go
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; 5070+4550 = 9620
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; -2745 (draw text)
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; ===========
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; 6875
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; Try X=97 Y=14 cycles=6875
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ldy #14 ; 2
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bmloopA:ldx #97 ; 2
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bmloopB:dex ; 2
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bne bmloopB ; 2nt/3
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dey ; 2
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bne bmloopA ; 2nt/3
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jmp bm_display_loop
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.align $100
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;=====================================================
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165
megademo/leaving.s
Normal file
165
megademo/leaving.s
Normal file
@ -0,0 +1,165 @@
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; Leaving house
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; Simple Text/GR split
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; STATE1 = Walk over to bird
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; STATE2 = get on bird
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; STATE3 = ride off on bird
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leaving_home:
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;===================
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; init screen
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bit KEYRESET
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setup_leaving:
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;===================
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; init vars
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lda #8
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sta DRAW_PAGE
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;=============================
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; Load graphic page0
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<leaving
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sta GBASL
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lda #>leaving
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sta GBASH
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jsr load_rle_gr
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lda #$a0
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ldy #10
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jsr clear_page_loop ; make top 6 lines spaces
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lda #0
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sta DRAW_PAGE
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bit PAGE0
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;==============================
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; setup graphics for vapor lock
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;==============================
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jsr vapor_lock ; 6
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; vapor lock returns with us at beginning of hsync in line
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; 114 (7410 cycles), so with 5070 lines to go
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jsr gr_copy_to_current ; 6+ 9292
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; now we have 322 left
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; GR part
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bit LORES ; 4
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bit SET_GR ; 4
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bit FULLGR ; 4
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jsr draw_moon_sky ; 6+54
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; 322 - 12 = 310
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; - 3 for jmp
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; 307 - 60 for sky = 247
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; Try X=9 Y=6 cycles=307
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; Try X=7 Y=6 cycles=247
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ldy #6 ; 2
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lvloopA:ldx #7 ; 2
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lvloopB:dex ; 2
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bne lvloopB ; 2nt/3
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dey ; 2
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bne lvloopA ; 2nt/3
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jmp lv_begin_loop
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.align $100
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;================================================
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; Leaving Loop
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;================================================
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; each scan line 65 cycles
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; 1 cycle each byte (40cycles) + 25 for horizontal
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; Total of 12480 cycles to draw screen
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; Vertical blank = 4550 cycles (70 scan lines)
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; Total of 17030 cycles to get back to where was
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; want 12*4 = 48 lines of HIRES = 3120-4=3116
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; want 192-48=144 lines of LORES = 9360-4=9356
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lv_begin_loop:
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bit SET_TEXT ; 4
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; Try X=11 Y=51 cycles=3112 R4
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nop
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nop
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ldy #51 ; 2
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lvloop8:ldx #11 ; 2
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lvloop9:dex ; 2
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bne lvloop9 ; 2nt/3
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dey ; 2
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bne lvloop8 ; 2nt/3
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bit SET_GR ; 4
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; Try X=10 Y=167 cycles=9353 R3
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lda $0
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ldy #167 ; 2
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lvloop6:ldx #10 ; 2
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lvloop7:dex ; 2
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bne lvloop7 ; 2nt/3
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dey ; 2
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bne lvloop6 ; 2nt/3
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;======================================================
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; We have 4550 cycles in the vblank, use them wisely
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;======================================================
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; do_nothing should be 4550
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; -10 keypress
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; ===========
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; 4540
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; Try X=9 Y=89 cycles=4540
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ldy #89 ; 2
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lvloop1:ldx #9 ; 2
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lvloop2:dex ; 2
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bne lvloop2 ; 2nt/3
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dey ; 2
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bne lvloop1 ; 2nt/3
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lda KEYPRESS ; 4
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bpl lv_no_keypress ; 3
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jmp lv_start_over
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lv_no_keypress:
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jmp lv_begin_loop ; 3
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lv_start_over:
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bit KEYRESET ; clear keypress ; 4
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rts ; 6
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@ -27,7 +27,7 @@ apple_iie:
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;===================
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jsr HOME
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jsr space_bars
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jsr leaving_home
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; C64 Opening Sequence
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@ -49,6 +49,7 @@ apple_iie:
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jsr check_email
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; Leaving house
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jsr leaving_home
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; Riding bird
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jsr bird_mountain
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@ -105,6 +106,7 @@ loop_forever:
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.include "mode7.s"
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.include "space_bars.s"
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.include "takeoff.s"
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.include "leaving.s"
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.include "waterfall.s"
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.include "text_print.s"
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.align $100
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@ -120,11 +122,13 @@ loop_forever:
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;============================
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; Include Lores Graphics
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;============================
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; leaving
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.include "leaving.inc"
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; waterfall
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.include "waterfall_page1.inc"
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.include "waterfall_page2.inc"
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;============================
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; Include Hires Graphics
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;============================
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