326 lines
4.7 KiB
ArmAsm
326 lines
4.7 KiB
ArmAsm
; o/~ It's the Title Screen, Yes it's the Title Screen o/~
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; by Vince `deater` Weaver vince@deater.net
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.include "hardware.inc"
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.include "zp.inc"
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.include "qload.inc"
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.include "music.inc"
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title:
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jsr hgr2 ; clear screen, HGR page 2
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;=========================
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; set up hgr lookup tables
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;=========================
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jsr hgr_make_tables ; necessary?
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;=========================
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;=========================
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; Title
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;=========================
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;=========================
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do_title:
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lda #0
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sta FRAME
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;================================
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; load regular title image to $40
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lda #<(title_trogfree_zx02)
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sta zx_src_l+1
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lda #>(title_trogfree_zx02)
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sta zx_src_h+1
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lda #$40
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; jsr decompress_lzsa2_fast
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jsr zx02_full_decomp
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;=================================
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; load trogdor title image to $20
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lda #<(title_zx02)
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sta zx_src_l+1
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lda #>(title_zx02)
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sta zx_src_h+1
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lda #$20
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; jsr decompress_lzsa2_fast
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jsr zx02_full_decomp
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bit KEYRESET
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lda SOUND_STATUS
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and #SOUND_MOCKINGBOARD
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beq mockingboard_notfound
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jsr mockingboard_loop
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jmp title_loop_done
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mockingboard_notfound:
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jsr duet_loop
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title_loop_done:
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;************************
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; Tips
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;************************
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jsr directions
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lda #LOAD_INTRO
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sta WHICH_LOAD
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rts
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;=====================
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;=====================
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; mockingboard loop
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;=====================
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;=====================
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mockingboard_loop:
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;===================================
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; Setup Mockingboard
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;===================================
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PT3_ENABLE_APPLE_IIC = 1
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;==================================
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; load music into the language card
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; into $D000 set 2
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;==================================
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; switch in language card
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; read/write RAM, $d000 bank 2
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lda $C083
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lda $C083
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; lda $C081 ; enable ROM
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; lda $C081 ; enable write
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; actually load it
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lda #LOAD_MUSIC
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sta WHICH_LOAD
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jsr load_file
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lda #0
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sta DONE_PLAYING
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lda #1
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sta LOOP
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jsr mockingboard_patch ; patch to work in slots other than 4?
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;=======================
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; Set up 50Hz interrupt
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;========================
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jsr mockingboard_init
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jsr mockingboard_setup_interrupt
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zurg:
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;============================
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; Init the Mockingboard
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;============================
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jsr reset_ay_both
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jsr clear_ay_both
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;==================
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; init song
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;==================
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jsr pt3_init_song
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;=======================
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; start music
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;=======================
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cli
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; we're supposed to animate flame, flash the "CLICK ANYWHERE" sign
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; and show trogdor when his music plays
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reset_altfire:
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lda #50
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sta ALTFIRE ; start on yy=50 on screen
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lda #<altfire_sprite ; point to alternate fire
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sta alt_smc1+1 ; sprite in memory
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sta alt_smc2+1
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lda #>altfire_sprite
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sta alt_smc1+2
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sta alt_smc2+2
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title_loop:
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lda C_VOLUME ; see if volume on trogdor channel
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beq no_trog
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bit PAGE1 ; if it did, flip page to trogdor
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jmp done_trog
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no_trog:
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bit PAGE2 ; otherwise stay at regular
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done_trog:
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; work on flame
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lda FRAME ; skip most of time
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and #$3f
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bne altfire_good
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; do altfire loop
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ldx ALTFIRE ; point (GBASL) to current line to copy
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lda hposn_high,X
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sta GBASH
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lda hposn_low,X
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sta GBASL
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ldy #34 ; xx=34*7
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inner_altfire:
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; swap sprite data with screen data
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lda (GBASL),Y ; get pixels from screen
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pha ; save for later
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alt_smc1:
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lda $d000 ; get pixels from sprite
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sta (GBASL),Y ; store to screen
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pla ; restore saved pixels
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alt_smc2:
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sta $d000 ; store to pixel area
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inc alt_smc1+1 ; increment the sprite pointers
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inc alt_smc2+1
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bne alt_noflo
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inc alt_smc1+2 ; handle 16-bit if overflowed
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inc alt_smc2+2
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alt_noflo:
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iny
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cpy #40 ; continue to xx=(40*7)
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bne inner_altfire
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inc ALTFIRE
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lda ALTFIRE
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cmp #135 ; continue until yy=135
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beq reset_altfire
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altfire_good:
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inc FRAME
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lda KEYPRESS ; 4
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bpl title_loop ; 3
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;==========================
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; key was pressed, exit
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bit KEYRESET ; clear the keyboard buffer
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bit PAGE2 ; return to viewing PAGE2
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;==============
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; disable music
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sei ; disable music
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jsr clear_ay_both
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rts
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;=====================
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;=====================
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; Electric Duet Loop
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;=====================
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;=====================
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duet_loop:
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lda #<peasant_ed
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sta MADDRL
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lda #>peasant_ed
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sta MADDRH
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duet_loop_again:
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jsr play_ed
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lda #1
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sta peasant_ed+24
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lda #0
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sta peasant_ed+25
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sta peasant_ed+26
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lda #<(peasant_ed+24)
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sta MADDRL
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lda #>(peasant_ed+24)
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sta MADDRH
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lda duet_done
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beq duet_loop_again
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duet_finished:
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bit KEYRESET
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rts
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;.include "decompress_fast_v2.s"
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;.include "wait_keypress.s"
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.include "directions.s"
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;.include "hgr_font.s"
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;.include "hgr_tables.s"
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;.include "hgr_hgr2.s"
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.include "duet.s"
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peasant_ed:
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.incbin "music/peasant.ed"
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.include "pt3_lib_mockingboard_patch.s"
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.include "graphics_title/title_graphics.inc"
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altfire:
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.include "graphics_title/altfire.inc"
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