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https://github.com/deater/dos33fsprogs.git
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50 lines
619 B
ArmAsm
50 lines
619 B
ArmAsm
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;==================
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; check for items
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;==================
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; X holds ??
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check_item:
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check_red_key:
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lda TILEMAP,X
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cmp #31 ; red key
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bne check_blue_key
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jsr pickup_noise
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lda INVENTORY
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ora #INV_RED_KEY
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sta INVENTORY
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; erase red key (304,96)
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lda #0
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sta $A938 ; hack
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jsr copy_tilemap_subset
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jsr update_status_bar
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jmp done_check_item
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check_blue_key:
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cmp #30 ; blue key
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bne done_check_item
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jsr pickup_noise
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lda INVENTORY
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ora #INV_BLUE_KEY
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sta INVENTORY
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; erase blue key
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lda #0
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sta $970c ; hack
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jsr copy_tilemap_subset
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jsr update_status_bar
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jmp duke_check_head
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done_check_item:
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rts
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