mirror of
https://github.com/digarok/flapple.git
synced 2024-06-08 20:29:44 +00:00
467 lines
16 KiB
ArmAsm
467 lines
16 KiB
ArmAsm
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SPRITE_X db 0
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SPRITE_Y db 0 ; BYTE,not pixel. gotta be, sorry
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SPRITE_W db 0
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SPRITE_W_D2 db 0
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SPRITE_H db 0 ; <- in bytes
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SPRITE_MAIN da 0
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SPRITE_AUX da 0
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SPRITE_MASK da 0
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SPRITE_IMASK da 0
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SPRITE_COLLISION db 0
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SPRITE_Y_IDX dw 0
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SPRITE_X_IDX dw 0
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SPRITE_SCREEN_P equ $00
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SPRITE_DATA_P equ $02
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SPRITE_SCREEN_P2 equ $02
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SPRITE_AUX_P equ $04
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SPRITE_SCREEN_P3 equ $04
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SPRITE_MASK_P equ $FA
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SPRITE_SCREEN_P4 equ $FA
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SPRITE_IMASK_P equ $FC
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SPRITE_SCREEN_IDX db #$0
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BIRD_VELOCITY db 0 ; in two's compliment {-3,3}
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BIRD_VELOCITY_MAX equ #20
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BIRD_VELOCITY_MIN equ #%111111111 ; -1
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BIRD_WIDTH equ #5
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BIRD_X equ #17
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BIRD_Y_INIT equ #17
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BIRD_Y db #BIRD_Y_INIT ; (0-47)
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BIRD_Y_OLD db #BIRD_Y_INIT ; used for undraw - to decouple input routine from sequence
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BIRD_FLAP db #0 ; 0=down 1=up
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BIRD_FLAP_RATE equ #5
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BIRD_FLAP_CNT db 0
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**
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FlapBird
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inc BIRD_FLAP_CNT
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lda BIRD_FLAP_CNT
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cmp #BIRD_FLAP_RATE
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bcs :flapIt
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rts
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:flapIt
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lda #0
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sta BIRD_FLAP_CNT
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inc BIRD_FLAP
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lda BIRD_FLAP
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cmp #2
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bne :noFlip
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lda #0
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sta BIRD_FLAP
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:noFlip rts
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***** EVEN then ODD, i.e. AUX then MAIN
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BIRD_WUP_E_PIXEL
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DO MONO
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hex 00,EA,EA,FF,F0,50,D5,A5,0F,00
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hex AA,EA,EE,CF,CF,D5,55,8A,90,90
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hex 05,AD,A4,08,08,05,5D,51,01,00
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ELSE
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hex BB,EA,EA,FF,FB,57,D5,A5,0F,77
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hex AA,EA,EE,CF,CF,D5,55,8A,90,97
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hex B5,AD,A4,B8,B8,75,5D,51,71,77
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FIN
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BIRD_WUP_E_MASK
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hex FF,00,00,00,0F,0F,00,00,00,FF
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hex 00,00,00,00,00,00,00,00,00,0F
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hex F0,00,00,F0,F0,F0,00,00,F0,FF
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BIRD_WUP_E_IMASK
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hex 00,FF,FF,FF,F0,F0,FF,FF,FF,00
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hex FF,FF,FF,FF,FF,FF,FF,FF,FF,F0
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hex 0F,FF,FF,0F,0F,0F,FF,FF,0F,00
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***** EVEN then ODD, i.e. AUX then MAIN
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BIRD_WDN_E_PIXEL
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DO MONO
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hex 00,EA,EA,FF,F0,50,D5,A5,0F,00
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hex AA,EE,EE,CF,CF,DD,5D,8A,90,90
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hex 54,AE,A4,08,08,5D,55,51,01,00
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ELSE
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hex BB,EA,EA,FF,FB,57,D5,A5,0F,77
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hex AA,EE,EE,CF,CF,DD,5D,8A,90,97
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hex 54,AE,A4,B8,B8,5D,55,51,71,77
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FIN
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BIRD_WDN_E_MASK
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hex FF,00,00,00,0F,0F,00,00,00,FF
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hex 00,00,00,00,00,00,00,00,00,0F
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hex 00,00,00,F0,F0,00,00,00,F0,FF
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BIRD_WDN_E_IMASK
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hex 00,FF,FF,FF,F0,F0,FF,FF,FF,00
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hex FF,FF,FF,FF,FF,FF,FF,FF,FF,F0
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hex FF,FF,FF,0F,0F,FF,FF,FF,0F,00
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***** EVEN then ODD, i.e. AUX then MAIN
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BIRD_WUP_O_PIXEL
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DO MONO
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hex 00,A0,A0,F0,00,00,50,50,F0,00
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hex A0,AE,EE,FF,FF,55,5D,AA,00,00
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hex 5A,DE,4E,8C,8C,5D,D5,18,19,09
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hex 00,0A,0A,00,00,00,05,05,00,00
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ELSE
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hex BB,AB,AB,FB,BB,77,57,57,F7,77
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hex AB,AE,EE,FF,FF,55,5D,AA,00,77
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hex 5A,DE,4E,8C,8C,5D,D5,18,19,79
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hex BB,BA,BA,BB,BB,77,75,75,77,77
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FIN
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BIRD_WUP_O_MASK
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hex FF,0F,0F,0F,FF,FF,0F,0F,0F,FF
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hex 0F,00,00,00,00,00,00,00,00,FF
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hex 00,00,00,00,00,00,00,00,00,F0
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hex FF,F0,F0,FF,FF,FF,F0,F0,FF,FF
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BIRD_WUP_O_IMASK
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hex 00,F0,F0,F0,00,00,F0,F0,F0,00
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hex F0,FF,FF,FF,FF,FF,FF,FF,FF,00
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hex FF,FF,FF,FF,FF,FF,FF,FF,FF,0F
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hex 00,0F,0F,00,00,00,0F,0F,00,00
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***** EVEN then ODD, i.e. AUX then MAIN
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BIRD_WDN_O_PIXEL
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DO MONO
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hex 00,A0,A0,F0,00,00,50,50,F0,00
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hex A0,EE,EE,FF,FF,D5,DD,AA,00,00
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hex 4A,EE,4E,8C,8C,DD,55,18,19,09
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hex 05,0A,0A,00,00,05,05,05,00,00
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ELSE
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hex BB,AB,AB,FB,BB,77,57,57,F7,77
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hex AB,EE,EE,FF,FF,D5,DD,AA,00,77
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hex 4A,EE,4E,8C,8C,DD,55,18,19,79
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hex B5,BA,BA,BB,BB,75,75,75,77,77
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FIN
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BIRD_WDN_O_MASK
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hex FF,0F,0F,0F,FF,FF,0F,0F,0F,FF
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hex 0F,00,00,00,00,00,00,00,00,FF
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hex 00,00,00,00,00,00,00,00,00,F0
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hex F0,F0,F0,FF,FF,F0,F0,F0,FF,FF
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BIRD_WDN_O_IMASK
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hex 00,F0,F0,F0,00,00,F0,F0,F0,00
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hex F0,FF,FF,FF,FF,FF,FF,FF,FF,00
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hex FF,FF,FF,FF,FF,FF,FF,FF,FF,0F
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hex 0F,0F,0F,00,00,0F,0F,0F,00,00
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** y=line a=height x=col
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UndrawBird lda BIRD_Y_OLD
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lsr
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tay
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bne :oddBird
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:evenBird lda #3
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bne :continue
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:oddBird lda #4
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:continue ldx #BIRD_X
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cmp #4
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beq :undraw4
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:undraw3 lda LoLineTableL,y
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sta SPRITE_SCREEN_P
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lda LoLineTableH,y
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sta SPRITE_SCREEN_P+1
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lda LoLineTableL+1,y
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sta SPRITE_SCREEN_P2
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lda LoLineTableH+1,y
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sta SPRITE_SCREEN_P2+1
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lda LoLineTableL+2,y
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sta SPRITE_SCREEN_P3
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lda LoLineTableH+2,y
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sta SPRITE_SCREEN_P3+1
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txa
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pha ; stash
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tay ; COL offset
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sta TXTPAGE2
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lda #BGCOLORAUX
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:wipe1 sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe1b sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe1c sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe1d sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe1e sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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pla ; unstash
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tay
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sta TXTPAGE1
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lda #BGCOLOR
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:wipe2 sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe2b sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe2c sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe2d sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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iny
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:wipe2e sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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rts
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:undraw4 lda LoLineTableL,y
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sta SPRITE_SCREEN_P
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lda LoLineTableH,y
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sta SPRITE_SCREEN_P+1
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lda LoLineTableL+1,y
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sta SPRITE_SCREEN_P2
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lda LoLineTableH+1,y
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sta SPRITE_SCREEN_P2+1
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lda LoLineTableL+2,y
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sta SPRITE_SCREEN_P3
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lda LoLineTableH+2,y
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sta SPRITE_SCREEN_P3+1
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lda LoLineTableL+3,y
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sta SPRITE_SCREEN_P4
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lda LoLineTableH+3,y
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sta SPRITE_SCREEN_P4+1
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txa
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pha ; stash
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tay ; COL offset
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sta TXTPAGE2
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lda #BGCOLORAUX
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:wipe3 sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe3b sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe3c sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe3d sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe3e sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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pla ; unstash
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tay
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sta TXTPAGE1
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lda #BGCOLOR
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:wipe4 sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe4b sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe4c sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe4d sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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iny
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:wipe4e sta (SPRITE_SCREEN_P),y
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sta (SPRITE_SCREEN_P2),y
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sta (SPRITE_SCREEN_P3),y
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sta (SPRITE_SCREEN_P4),y
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rts
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DrawBird
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lda BIRD_Y
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lsr
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bcs :oddHeight
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:evenHeight
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sta SPRITE_Y
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lda #3
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sta SPRITE_H
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lda BIRD_FLAP
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beq :flapDownEven
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:flapUpEven CopyPtr BIRD_WUP_E_PIXEL;SPRITE_DATA_P
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CopyPtr BIRD_WUP_E_MASK;SPRITE_MASK_P
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CopyPtr BIRD_WUP_E_IMASK;SPRITE_IMASK_P
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jmp :drawSprite
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:flapDownEven CopyPtr BIRD_WDN_E_PIXEL;SPRITE_DATA_P
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CopyPtr BIRD_WDN_E_MASK;SPRITE_MASK_P
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CopyPtr BIRD_WDN_E_IMASK;SPRITE_IMASK_P
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jmp :drawSprite
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:oddHeight
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sta SPRITE_Y
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lda #4
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sta SPRITE_H
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lda BIRD_FLAP
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beq :flapDownOdd
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:flapUpOdd CopyPtr BIRD_WUP_O_PIXEL;SPRITE_DATA_P
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CopyPtr BIRD_WUP_O_MASK;SPRITE_MASK_P
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CopyPtr BIRD_WUP_O_IMASK;SPRITE_IMASK_P
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jmp :drawSprite
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:flapDownOdd CopyPtr BIRD_WDN_O_PIXEL;SPRITE_DATA_P
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CopyPtr BIRD_WDN_O_MASK;SPRITE_MASK_P
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CopyPtr BIRD_WDN_O_IMASK;SPRITE_IMASK_P
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jmp :drawSprite
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:drawSprite
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jsr DrawSpriteBetter
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rts
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* still does collision
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DrawSpriteBetter
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lda #0
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sta SPRITE_X_IDX
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:drawLine lda SPRITE_Y ;
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tay
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lda LoLineTableL,y ; SET SCREEN LINE
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sta SPRITE_SCREEN_P
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lda LoLineTableH,y
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sta SPRITE_SCREEN_P+1
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lda #BIRD_X ;SPRITE_X ; ADD IN X OFFSET TO SCREEN POSITION
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clc ; I think the highest position is $f8
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adc SPRITE_SCREEN_P ; eg- Line 18, col 40= $4f8
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sta SPRITE_SCREEN_P ; SHOULD NEVER CARRY?
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jmp DrawSpriteLineC
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]DSLCD_done
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inc SPRITE_Y
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dec SPRITE_H
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lda SPRITE_H
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bne :drawLine
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rts
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DrawSpriteLineC
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; EVEN COLS
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DD_EVEN lda #0
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sta SPRITE_SCREEN_IDX
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sta TXTPAGE2
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:lineLoop
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:collisionCheckDrawer
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ldy SPRITE_SCREEN_IDX ; GET SCREEN PIXELS
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lda (SPRITE_SCREEN_P),y
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ldy SPRITE_X_IDX ; PREP Y INDEX
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cmp #BGCOLORAUX ; AUX BGCOLOR @TODO
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beq :noCollisionSIMPLE
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pha ; SAVE -> STACK
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and (SPRITE_IMASK_P),y
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cmp #BGCOLORAUX_0LO
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beq :noCollision
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cmp #BGCOLORAUX_0HI
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beq :noCollision
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lda #1
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sta SPRITE_COLLISION
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:noCollision
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:doPixels pla ; Y=SPRITE X A=BG DATA
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and (SPRITE_MASK_P),y ; CUT OUT SPRITE IN BG DATA
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ora (SPRITE_DATA_P),y ; OVERLAY OUR SPRITE DATA
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ldy SPRITE_SCREEN_IDX
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sta (SPRITE_SCREEN_P),y
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sec
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bcs :donePixel
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:noCollisionSIMPLE
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lda (SPRITE_DATA_P),y
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ldy SPRITE_SCREEN_IDX
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sta (SPRITE_SCREEN_P),y
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:donePixel inc SPRITE_X_IDX
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inc SPRITE_SCREEN_IDX
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ldy SPRITE_SCREEN_IDX
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cpy SPRITE_W
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bcc :lineLoop
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DD_ODD
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; ODD COLS
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lda #0
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sta SPRITE_SCREEN_IDX
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sta TXTPAGE1
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:lineLoop
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:collisionCheckDrawer
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ldy SPRITE_SCREEN_IDX ; GET SCREEN PIXELS
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lda (SPRITE_SCREEN_P),y
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ldy SPRITE_X_IDX ; PREP Y INDEX
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cmp #BGCOLOR ; MAIN BGCOLOR @TODO
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beq :noCollisionSIMPLE
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pha ; SAVE -> STACK
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and (SPRITE_IMASK_P),y
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cmp #BGCOLOR_0LO
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beq :noCollision
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cmp #BGCOLOR_0HI
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beq :noCollision
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lda #1
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sta SPRITE_COLLISION
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:noCollision
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:doPixels pla ; Y=SPRITE X A=BG DATA
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and (SPRITE_MASK_P),y ; CUT OUT SPRITE IN BG DATA
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ora (SPRITE_DATA_P),y ; OVERLAY OUR SPRITE DATA
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ldy SPRITE_SCREEN_IDX
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sta (SPRITE_SCREEN_P),y
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sec
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bcs :donePixel
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:noCollisionSIMPLE
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lda (SPRITE_DATA_P),y
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ldy SPRITE_SCREEN_IDX
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sta (SPRITE_SCREEN_P),y
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:donePixel inc SPRITE_X_IDX
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inc SPRITE_SCREEN_IDX
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ldy SPRITE_SCREEN_IDX
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cpy SPRITE_W
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bcc :lineLoop
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jmp ]DSLCD_done
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