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waterfall: both directions work

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This commit is contained in:
Vince Weaver 2018-08-02 21:21:34 -04:00
parent 2308183385
commit f71d340a15
1 changed files with 32 additions and 22 deletions
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54
waterfall/waterfall.s
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@ -15,7 +15,6 @@ BASH = $29
MASK = $2E
COLOR = $30
FRAME = $60
BLARGH = $69
BIRD_STATE = $E0
BIRD_DIR = $E1
DRAW_PAGE = $EE
@ -249,36 +248,47 @@ page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra)
;==========================
; draw sprite
; draw bird sprite
;==========================
; 13 + 11 + 2190 = 2214
lda BIRD_STATE ; 3
and #1 ; 2
; beq bird_walking
; ; 2
ldx BIRD_DIR ; 3
bne bird_left
lda #>bird_rider_stand_right ; 2
sta INH ; 3
lda #<bird_rider_stand_right ; 2
sta INL ; 3
bird_right:
cmp #1
beq bird_walk_right
bird_stand_right:
ldx #>bird_rider_stand_right ; 2
ldy #<bird_rider_stand_right ; 2
jmp draw_bird
bird_walk_right:
ldx #>bird_rider_walk_right ; 2
ldy #<bird_rider_walk_right ; 2
jmp draw_bird
bird_left:
cmp #1
beq bird_walk_left
bird_stand_left:
ldx #>bird_rider_stand_left ; 2
ldy #<bird_rider_stand_left ; 2
jmp draw_bird
bird_walk_left:
ldx #>bird_rider_walk_left ; 2
ldy #<bird_rider_walk_left ; 2
jmp draw_bird
jmp draw_bird ; 3
;bird_walking:
; 3
; lda #>bird_rider_walk_right ; 2
; sta INH ; 3
; lda #<bird_rider_walk_right ; 2
; sta INL ; 3
; ; must be 15
; lda #0 ; 2
; ; Must add another 15 as sprite is different
; inc YPOS ; 5
; inc YPOS ; 5
; inc YPOS ; 5
draw_bird:
stx INH ; 3
sty INL ; 3
lda #22 ; 2
sta YPOS ; 3