Move find item flag calculation
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#Parameters:
#r4 = map ID
#r5 = trap type
#r6 = activation type
0 = trap
1 = item
#Returns:
#r2 = activation outcome
0 = no item found or no trap activated
1 = item found or trap activated
001804c4: 000417c2 srl r2,r4,0x1f
001804c8: 00821021 addu r2,r4,r2
001804cc: 00023843 sra r7,r2,0x01 #r7 = (map ID) / 2 ?
001804d0: 30840001 andi r4,r4,0x0001
001804d4: 00042080 sll r4,r4,0x02
001804d8: 00852021 addu r4,r4,r5 #r4 = ((mapID % 2) * 4) + trap type
001804dc: 34020080 ori r2,r0,0x0080
001804e0: 10c0000b beq r6,r0,0x00180510 #branch if trap
001804e4: 00822007 srav r4,r2,r4
item?
001804e8: 3c018006 lui r1,0x8006
001804ec: 00270821 addu r1,r1,r7
001804f0: 90239414 lbu r3,-0x6bec(r1) #load move find item flags for map
001804f4: 00000000 nop
001804f8: 00831825 or r3,r4,r3 #combine map flags with updated flags
001804fc: 3c018006 lui r1,0x8006
00180500: 00270821 addu r1,r1,r7
00180504: a0239414 sb r3,-0x6bec(r1) #store new move find item flags for map
00180508: 0806014a j 0x00180528 #jump to End
0018050c: 34020001 ori r2,r0,0x0001 #return r2 = 1
trap?
00180510: 3c018006 lui r1,0x8006
00180514: 00270821 addu r1,r1,r7
00180518: 90229414 lbu r2,-0x6bec(r1) #load move find item flags
0018051c: 00000000 nop
00180520: 00441024 and r2,r2,r4 #compare map flags with updated flags
00180524: 2c420001 sltiu r2,r2,0x0001 #reverse flags (if item has been found, trap activates)
End:
00180528: 03e00008 jr r31
0018052c: 00000000 nop
Return Locations
001802a0: Rare/common item determination 001803e0: Set map Item/trap data
