2018-04-20 20:04:39 +00:00
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;
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; inventory
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; Code and data structures related to the weapons inventory and store
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;
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; Created by Quinn Dunki on 8/13/17
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;
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INVENTORY_ITEMS = 6
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ITEM_WIDTH = 16 ; In pixels
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ICON_WIDTH = 8 ; In pixels
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ICON_ORIGIN = (ITEM_WIDTH-ICON_WIDTH)/4 ; In bytes
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; renderInventory
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;
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;
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renderInventory:
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SAVE_AXY
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; Compute initial VRAM position
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ldy #(8192 + (160*10 + (160*ICON_ORIGIN + ICON_ORIGIN)))
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ldx #0
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renderInventoryLoop:
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jsr renderInventoryItem
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tya ; Advance VRAM pointer
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clc
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adc #ITEM_WIDTH/2
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tay
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inx
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cpx #INVENTORY_ITEMS
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bne renderInventoryLoop
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RESTORE_AXY
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; renderInventoryItem
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;
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; X = Item index
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; Y = VRAM pos
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;
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renderInventoryItem:
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SAVE_AXY
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phy
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phx
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2018-06-06 20:23:00 +00:00
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lda #2
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2018-04-20 20:04:39 +00:00
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clc
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jsr DrawSpriteBank
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plx
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ply
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txa
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clc
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jsr DrawSpriteBank
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RESTORE_AXY
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rts
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renderInventoryItemParam:
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.word 0,20
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