mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-09 07:29:32 +00:00
8b0b4c6291
this one is tricky as we only have room to load it in advance, to the language card, and hope it's still there later
282 lines
4.0 KiB
ArmAsm
282 lines
4.0 KiB
ArmAsm
; Weird head lens/rotozoom
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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 "../qload.inc"
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.include "../music.inc"
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lens_start:
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;=====================
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; initializations
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;=====================
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;================================
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; Clear screen and setup graphics
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;================================
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bit SET_GR
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bit FULLGR
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bit PAGE1 ; set page 1
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bit LORES ; Lo-res graphics
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lda #0
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sta DISP_PAGE
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lda #4
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sta DRAW_PAGE
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;===================================
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; Clear top/bottom of page 0 and 1
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;===================================
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jsr clear_screens
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;===================================
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; init the multiply tables
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;===================================
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jsr init_multiply_tables
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;======================
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; show the title screen
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;======================
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; Title Screen
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title_screen:
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load_background:
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;===========================
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; Clear both bottoms
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; jsr clear_bottoms
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;=============================
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; Load title
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lda #<lens_zx02
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sta zx_src_l+1
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lda #>lens_zx02
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sta zx_src_h+1
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lda #$40
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jsr zx02_full_decomp
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;=================================
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; copy to both pages
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jsr gr_copy_to_current
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jsr page_flip
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jsr gr_copy_to_current
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;=================================
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;TODO: wait 5s?
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;
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;=================================
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;TODO: play sound sample?
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;=================================
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; decompress audio to $6000
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; lda #<transmission_data
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; sta zx_src_l+1
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; lda #>transmission_data
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; sta zx_src_h+1
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; lda #$60
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; jsr zx02_full_decomp
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; play audio
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lda #$00
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sta BTC_L
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lda #$D0
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sta BTC_H
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sei ; stop music
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jsr mute_ay_both ; disable audio
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; switch to language card Page 1
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lda $C08B
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lda $C08B
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ldy #0
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lda (BTC_L),Y
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cmp #$AA ; check if our audio was loaded
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bne skip_audio
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ldx #14
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jsr play_audio
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skip_audio:
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; switch back to language card Page 2
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lda $C083
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lda $C083
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jsr unmute_ay_both ; re-enable audio
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cli ; re-enable music
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;===============================
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; draw/move lens
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;===============================
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lda #10
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jsr setup_timeout
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lda #10
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sta LENS_X
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lda #2
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sta LENS_Y
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lda #1
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sta XADD
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lda #2
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sta YADD
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lda #0
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sta COUNT
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lens_move_loop:
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jsr gr_copy_to_current
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ldx COUNT
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lda LENS_X
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sta XPOS
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lda LENS_Y
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sta YPOS
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lda #<lens_mask
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sta MASKL
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lda #>lens_mask
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sta MASKH
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lda #<lens_sprite
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sta INL
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lda #>lens_sprite
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sta INH
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jsr gr_put_sprite_mask
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jsr page_flip
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; move lens
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; move x
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move_x:
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clc
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lda LENS_X
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adc XADD
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sta LENS_X
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cmp #2
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bcc reverse_x
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cmp #28
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bcc no_reverse_x
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reverse_x:
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lda XADD
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eor #$FF
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sta XADD
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inc XADD
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no_reverse_x:
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move_y:
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clc
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lda LENS_Y
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adc YADD
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sta LENS_Y
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cmp #2
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bcc reverse_y
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cmp #22
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bcc no_reverse_y
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reverse_y:
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lda YADD
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eor #$FF
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sta YADD
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inc YADD
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no_reverse_y:
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; wait a bit
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lda #200
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jsr wait
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no_lens_bounce_oflo:
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jsr check_timeout
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bcc lens_move_loop ; clear if not timed out
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done_lens_bounce_loop:
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;=================================
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;=================================
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; do rotozoom
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;=================================
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;=================================
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jsr do_rotozoom
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lens_end:
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rts
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;===============================================
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; External modules
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;===============================================
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.include "roto.s"
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.include "rotozoom.s"
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.include "../gr_pageflip.s"
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;.include "../gr_fast_clear.s"
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.include "../gr_copy.s"
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.include "../gr_offsets.s"
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.include "../c00_scrn_offsets.s"
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.include "../multiply_fast.s"
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.include "../wait_keypress.s"
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; .include "../zx02_optim.s"
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.include "../irq_wait.s"
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.include "gr_putsprite_mask.s"
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.include "../audio.s"
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;===============================================
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; Data
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;===============================================
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lens_zx02:
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.incbin "graphics/lenspic.gr.zx02"
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.include "graphics/lens_sprites.inc"
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.if 0
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lens_coords_x:
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.byte 10,11,12,13,14,15,16,17
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.byte 18,19,20,21,22,23,24,25
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.byte 26,27,28,28,27,26,25,24
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.byte 23,22,21,20,19,18,17,16
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lens_coords_y:
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.byte 2, 4, 6, 8,10,12,14,16
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.byte 18,20,22,22,20,18,16,14
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.byte 12,10, 8, 6, 4, 2, 2, 4
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.byte 6, 8,10,12,14,16,18,20
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.endif
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