Difference between revisions of "Change Item Quantity on Equip"
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| − | + | # change the item quantity in the inventory | |
| − | # | ||
# Parameters: | # Parameters: | ||
# r4 = Item Number | # r4 = Item Number | ||
| − | # r5 = Value | + | # r5 = Value |
# | # | ||
# Return Value: | # Return Value: | ||
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001208b8: 308403ff andi r4,r4,0x03ff # | 001208b8: 308403ff andi r4,r4,0x03ff # | ||
| − | 001208bc: 1080000c beq r4,r0,0x001208f0 # if | + | 001208bc: 1080000c beq r4,r0,0x001208f0 # if item number AND 0x3FF = 0 |
| − | 001208c0: 00001021 addu r2,r0, | + | 001208c0: 00001021 addu r2,r0,r0 # return 0 |
001208c4: 3c018006 lui r1,0x8006 # | 001208c4: 3c018006 lui r1,0x8006 # | ||
001208c8: 00240821 addu r1,r1,r4 # | 001208c8: 00240821 addu r1,r1,r4 # | ||
| − | 001208cc: 902296e0 lbu r2,-0x6920(r1) # | + | 001208cc: 902296e0 lbu r2,-0x6920(r1) # item quantity = inventory[item number] |
001208d0: 00000000 nop # | 001208d0: 00000000 nop # | ||
| − | 001208d4: 00451021 addu r2,r2,r5 # item quantity | + | 001208d4: 00451021 addu r2,r2,r5 # item quantity += value |
| − | 001208d8: 04410002 bgez r2,0x001208e4 # if item quantity | + | 001208d8: 04410002 bgez r2,0x001208e4 # if item quantity is negative: |
001208dc: 00000000 nop # | 001208dc: 00000000 nop # | ||
001208e0: 00001021 addu r2,r0,r0 # item quantity = 0 | 001208e0: 00001021 addu r2,r0,r0 # item quantity = 0 | ||
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001208f0: 03e00008 jr r31 # return item quantity | 001208f0: 03e00008 jr r31 # return item quantity | ||
001208f4: 00000000 nop # | 001208f4: 00000000 nop # | ||
| − | |||
Revision as of 02:29, 29 September 2024
# change the item quantity in the inventory # Parameters: # r4 = Item Number # r5 = Value # # Return Value: # item quantity 001208b8: 308403ff andi r4,r4,0x03ff # 001208bc: 1080000c beq r4,r0,0x001208f0 # if item number AND 0x3FF = 0 001208c0: 00001021 addu r2,r0,r0 # return 0 001208c4: 3c018006 lui r1,0x8006 # 001208c8: 00240821 addu r1,r1,r4 # 001208cc: 902296e0 lbu r2,-0x6920(r1) # item quantity = inventory[item number] 001208d0: 00000000 nop # 001208d4: 00451021 addu r2,r2,r5 # item quantity += value 001208d8: 04410002 bgez r2,0x001208e4 # if item quantity is negative: 001208dc: 00000000 nop # 001208e0: 00001021 addu r2,r0,r0 # item quantity = 0 001208e4: 3c018006 lui r1,0x8006 # 001208e8: 00240821 addu r1,r1,r4 # 001208ec: a02296e0 sb r2,-0x6920(r1) # store item quantity 001208f0: 03e00008 jr r31 # return item quantity 001208f4: 00000000 nop #
