mirror of
https://github.com/robmcmullen/fujirun.git
synced 2024-12-29 14:33:23 +00:00
447 lines
8.5 KiB
ArmAsm
447 lines
8.5 KiB
ArmAsm
; text & hgr screen utils
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init_screen_once nop
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lda #0
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sta KBDSTROBE
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sta drawpage
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sta damageindex1
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sta damageindex2
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sta damageptr
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sta damageptr1
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sta damageptr2
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lda #damagepage1
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sta damageptr+1
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sta damageptr1+1
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lda #damagepage2
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sta damageptr2+1
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lda #0
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sta tdamageindex1
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lda #128
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sta tdamageindex2
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jsr draw_to_page1
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rts
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; character in A, col in X
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text_put_col nop
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sta $0400,x ; row 0
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sta $0480,x ; row 1
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sta $0500,x ; row 2
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sta $0580,x ; row 3
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sta $0600,x ; row 4
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sta $0680,x ; row 5
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sta $0700,x ; row 6
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sta $0780,x ; row 7
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sta $0428,x ; row 8
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sta $04a8,x ; row 9
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sta $0528,x ; row 10
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sta $05a8,x ; row 11
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sta $0628,x ; row 12
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sta $06a8,x ; row 13
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sta $0728,x ; row 14
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sta $07a8,x ; row 15
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sta $0450,x ; row 16
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sta $04d0,x ; row 17
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sta $0550,x ; row 18
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sta $05d0,x ; row 19
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sta $0650,x ; row 20
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sta $06d0,x ; row 21
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sta $0750,x ; row 22
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sta $07d0,x ; row 23
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rts
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text_put_col2 nop
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sta $0800,x ; row 0
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sta $0880,x ; row 1
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sta $0900,x ; row 2
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sta $0980,x ; row 3
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sta $0a00,x ; row 4
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sta $0a80,x ; row 5
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sta $0b00,x ; row 6
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sta $0b80,x ; row 7
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sta $0828,x ; row 8
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sta $08a8,x ; row 9
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sta $0928,x ; row 10
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sta $09a8,x ; row 11
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sta $0a28,x ; row 12
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sta $0aa8,x ; row 13
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sta $0b28,x ; row 14
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sta $0ba8,x ; row 15
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sta $0850,x ; row 16
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sta $08d0,x ; row 17
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sta $0950,x ; row 18
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sta $09d0,x ; row 19
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sta $0a50,x ; row 20
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sta $0ad0,x ; row 21
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sta $0b50,x ; row 22
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sta $0bd0,x ; row 23
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rts
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; maze is text screen 1
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textrows_l .byte $00, $80, $00, $80, $00, $80, $00, $80
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.byte $28, $a8, $28, $a8, $28, $a8, $28, $a8
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.byte $50, $d0, $50, $d0, $50, $d0, $50, $d0
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textrows_h .byte $04, $04, $05, $05, $06, $06, $07, $07
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.byte $04, $04, $05, $05, $06, $06, $07, $07
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.byte $04, $04, $05, $05, $06, $06, $07, $07
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wipeclear1 ldy #0
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sty param_y
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wipeclear1_loop lda HGRROWS_L,y
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sta wipeclear1_save_smc+1
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lda HGRROWS_H1,y
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sta wipeclear1_save_smc+2
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ldx #39
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lda #$ff
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wipeclear1_save_smc sta $ffff,x
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dex
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bpl wipeclear1_save_smc
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ldx #0
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wipeclear1_wait nop
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nop
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nop
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nop
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nop
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nop
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dex
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bne wipeclear1_wait
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inc param_y
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ldy param_y
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cpy #192
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bcc wipeclear1_loop
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rts
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wipe2to1 ldy #0
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sty param_y
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wipe2to1_loop lda HGRROWS_H2,y
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sta wipe2to1_load_smc+2
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lda HGRROWS_L,y
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sta wipe2to1_load_smc+1
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sta wipe2to1_save_smc+1
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lda HGRROWS_H1,y
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sta wipe2to1_save_smc+2
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ldx #39
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wipe2to1_load_smc lda $ffff,x
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wipe2to1_save_smc sta $ffff,x
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dex
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bpl wipe2to1_load_smc
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ldx #0
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wipe2to1_wait nop
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nop
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nop
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nop
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nop
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nop
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dex
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bne wipe2to1_wait
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inc param_y
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ldy param_y
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cpy #192
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bcc wipe2to1_loop
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rts
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copy2to1 lda #$40
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sta ?source+2
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lda #$20
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sta ?dest+2
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?outer ldy #0
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?source lda $ff00,y
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?dest sta $ff00,y
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iny
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bne ?source
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inc ?source+2
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inc ?dest+2
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lda ?dest+2
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cmp #$40
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bcc ?outer
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rts
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copytexthgr nop
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ldy #0 ; y is rows
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copytexthgr_outer
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lda textrows_h,y
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ora #4
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sta copytexthgr_src_smc+2
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lda textrows_l,y
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sta copytexthgr_src_smc+1
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ldx #0 ; x is columns
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copytexthgr_src_smc
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lda $ffff,x
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copytexthgr_dest_smc
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jsr $ffff
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inx
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cpx #40
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bcc copytexthgr_src_smc
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iny
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cpy #24
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bcc copytexthgr_outer
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rts
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pageflip nop
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lda drawpage
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eor #$80
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bpl show_page1 ; pos = show 1, draw 2; neg = show 1, draw 1
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show_page2 lda #$80
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sta drawpage
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bit TXTPAGE2 ; show page 2, work on page 1
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draw_to_page1 lda #$00
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sta hgrselect
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lda #$20
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sta hgrhi
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lda damageindex ; save other page's damage pointer
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sta damageindex2
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lda #DAMAGEPAGE1 ; point to page 1's damage area
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sta damageptr+1
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lda damageindex1
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sta damageindex
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lda tdamageindex ; save other page's damage pointer
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sta tdamageindex2
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lda tdamageindex1 ; point to page 1's damage area
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sta tdamageindex
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lda #0
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sta damagestart
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; copy addresses for functions that write to one page or the other
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lda #<FASTFONT_H1
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sta fastfont_smc+1
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sta copytexthgr_dest_smc+1
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lda #>FASTFONT_H1
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sta fastfont_smc+2
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sta copytexthgr_dest_smc+2
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rts
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show_page1 lda #0
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sta drawpage
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bit TXTPAGE1 ; show page 1, work on page 2
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draw_to_page2 lda #$60
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sta hgrselect
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lda #$40
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sta hgrhi
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lda damageindex ; save other page's damage pointer
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sta damageindex1
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lda #DAMAGEPAGE2 ; point to page 2's damage area
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sta damageptr+1
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lda damageindex2
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sta damageindex
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lda tdamageindex ; save other page's damage pointer
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sta tdamageindex1
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lda tdamageindex2 ; point to page 2's damage area
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sta tdamageindex
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lda #128
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sta damagestart
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lda #<FASTFONT_H2
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sta fastfont_smc+1
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sta copytexthgr_dest_smc+1
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lda #>FASTFONT_H2
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sta fastfont_smc+2
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sta copytexthgr_dest_smc+2
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rts
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; tile for middle left/right (number 12) is a color tile and gets
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; the wrong bit pattern when it's in an odd column -- replace the
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; image with tile 15 when necessary
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fastfont nop
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cmp #12
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bne fastfont_smc
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txa
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and #1
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bne ?1
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lda #15
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bne fastfont_smc
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?1 lda #12
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fastfont_smc jmp $ffff
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restorebg_init
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rts
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restorebg_driver
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; copy damaged characters back to screen
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;jsr copytexthgr
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ldy #0
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sty param_count
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restorebg_loop1 ldy param_count
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cpy damageindex
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bcc restorebg_cont ; possible there's no damage, so have to check first
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ldy #0
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sty damageindex ; clear damage index for this page
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rts
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restorebg_cont lda (damageptr),y ; groups of 4 x1 -> x2, y1 -> y2
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sta param_x
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iny
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lda (damageptr),y
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sta param_col
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iny
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lda (damageptr),y
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sta param_y
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iny
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lda (damageptr),y
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sta param_row
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iny
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sty param_count
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ldy param_y
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restorebg_row lda textrows_h,y
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sta restorebg_row_smc+2
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lda textrows_l,y
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sta restorebg_row_smc+1
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ldx param_x
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restorebg_row_smc lda $ffff,x
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jsr fastfont
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inx
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cpx param_col
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bcc restorebg_row_smc
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iny
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cpy param_row
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beq restorebg_row
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bcc restorebg_row
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bcs restorebg_loop1
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; Draw sprites by looping through the list of sprites
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renderstart
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lda #0
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sta damageindex
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sta param_index
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renderloop
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ldx param_index
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lda actor_active,x
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beq renderskip ; skip if zero
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bmi renderend ; end if negative
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jsr get_sprite
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lda actor_l,x
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sta jsrsprite_smc+1
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lda actor_h,x
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sta jsrsprite_smc+2
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lda actor_x,x
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sta param_x
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lda actor_y,x
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sta param_y
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jmp jsrsprite_smc
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jsrsprite_smc
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jsr $ffff ; wish you could JSR ($nnnn)
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ldy damageindex
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lda scratch_col ; contains the byte index into the line
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sta (damageptr),y
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iny
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clc
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adc damage_w
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sta (damageptr),y
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iny
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; need to convert hgr y values to char rows
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lda param_y
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lsr a
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lsr a
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lsr a
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sta (damageptr),y
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iny
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lda param_y
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clc
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adc damage_h
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lsr a
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lsr a
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lsr a
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sta (damageptr),y
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iny
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sty damageindex
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renderskip
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inc param_index
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bne renderloop
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renderend
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rts
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; text position in r, c. add single char to both pages!
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damage_char nop
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lda #1
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sta size
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; fallthrough
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; text position in r, c; string length in size
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damage_string nop
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ldy tdamageindex1
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lda c
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sta TEXTDAMAGE,y
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iny
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lda r
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sta TEXTDAMAGE,y
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iny
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lda size
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sta TEXTDAMAGE,y
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iny
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sty tdamageindex1
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ldy tdamageindex2
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lda c
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sta TEXTDAMAGE,y
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iny
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lda r
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sta TEXTDAMAGE,y
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iny
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lda size
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sta TEXTDAMAGE,y
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iny
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sty tdamageindex2
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lda damagestart
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bmi ?2
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lda tdamageindex1
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sta tdamageindex
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rts
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?2 lda tdamageindex2
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sta tdamageindex
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rts
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restoretext nop
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ldy damagestart
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sty param_index
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?loop1 ldy param_index
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cpy tdamageindex
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bcc ?cont ; possible there's no damage, so have to check first
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lda damagestart
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sta tdamageindex ; clear damage index for this page
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rts
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?cont lda TEXTDAMAGE,y ; groups of 4 x1 -> x2, y1 -> y2
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sta param_col
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iny
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lda TEXTDAMAGE,y
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sta param_row
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iny
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lda TEXTDAMAGE,y
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sta param_count
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iny
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sty param_index
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ldy param_row
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lda textrows_h,y
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sta ?row_smc+2
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lda textrows_l,y
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sta ?row_smc+1
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ldx param_col
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?row_smc lda $ffff,x
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jsr fastfont
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inx
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dec param_count
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bne ?row_smc
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beq ?loop1
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