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Aminet 30
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Aminet 30 (1999)(Schatztruhe)[!][Apr 1999].iso
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Aminet
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dev
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cross
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GBDK-2.0.lha
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GBDK
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lib
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scroll_s.s
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1998-10-01
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468b
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36 lines
.include "global.s"
.area _CODE
;; Move sprite number C at XY = DE
.scroll_sprite::
LD HL,#.OAM ; Calculate origin of sprite info
SLA C ; Multiply C by 4
SLA C
LD B,#0x00
ADD HL,BC
LD A,(HL)
ADD E ; Set Y
LD (HL+),A
LD A,(HL)
ADD D ; Set X
LD (HL+),A
RET
_scroll_sprite::
PUSH BC
LDA HL,4(SP) ; Skip return address and registers
LD C,(HL) ; C = nb
INC HL
LD D,(HL) ; D = x
INC HL
LD E,(HL) ; E = y
CALL .scroll_sprite
POP BC
RET