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megademo: add bird

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This commit is contained in:
Vince Weaver 2018-10-15 00:55:31 -04:00
parent 5ba192c037
commit 276d3ab689
1 changed files with 20 additions and 7 deletions
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27
megademo/leaving.s
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@ -161,6 +161,20 @@ lvloop7:dex ; 2
;=========
; 21
; draw bird
lda #>bird_stand_right_sprite ; 2
sta INH ; 3
lda #<bird_stand_right_sprite ; 2
sta INL ; 3
lda #24 ; 2
sta XPOS ; 3
lda #20 ; 2
sta YPOS ; 3
jsr put_sprite ; 6
;=========
; 26 + 2046 = 2072
;======================================================
; We have 4550 cycles in the vblank, use them wisely
@ -172,18 +186,17 @@ lvloop7:dex ; 2
; 4550 (vblank)
; -1255 (clear yard)
; -1418 (draw tfv)
; -2072 (draw bird)
; -21 (draw susie)
; -10 keypress
; ===========
; 5486
; 3414
; Try X=51 Y=21 cycles=5482 R4
; Try X=67 Y=10 cycles=3411 R3
lda $0
nop
nop
ldy #21 ; 2
lvloop1:ldx #51 ; 2
ldy #10 ; 2
lvloop1:ldx #67 ; 2
lvloop2:dex ; 2
bne lvloop2 ; 2nt/3
dey ; 2