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https://github.com/deater/dos33fsprogs.git
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83 lines
1.1 KiB
ArmAsm
83 lines
1.1 KiB
ArmAsm
; Not actually 3D at all
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; is really a lo-res shape plotter that can play movie-like things
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; o/~ We went to Threed to see the Queen o/~
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;
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; by deater (Vince Weaver) <vince@deater.net>
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.include "../zp.inc"
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.include "../hardware.inc"
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.include "../qload2.inc"
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;.include "music2.inc"
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threed_start:
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;===================
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; Setup graphics
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;===================
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bit SET_GR
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bit LORES
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bit FULLGR
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bit PAGE1
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lda #0
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sta DRAW_PAGE
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bit KEYRESET
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lda #num_scenes
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sta SCENE_COUNT
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lda #<frame15
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sta INL
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lda #>frame15
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sta INH
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scene_loop:
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jsr draw_scene
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;============================
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; flip pages
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;============================
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lda DRAW_PAGE ; 3
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beq was_page1 ; 2/3
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was_page2:
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bit PAGE2 ; 4
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lda #$0 ; 2
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beq done_pageflip ; 2/3
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was_page1:
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bit PAGE1 ; 4
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lda #$4 ; 2
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done_pageflip:
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sta DRAW_PAGE ; 3
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lda #12
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sta IRQ_COUNTDOWN
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wait_for_irq:
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lda IRQ_COUNTDOWN
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bne wait_for_irq
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lda KEYPRESS
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bmi done_threed
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dec SCENE_COUNT
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bne scene_loop
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done_threed:
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bit KEYRESET
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rts
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;===================================
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; .include "../wait_keypress.s"
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.include "draw_boxes.s"
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.include "3d.inc"
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