View source for Rare/common item determination

 #Parameters:
     #r4 = Unit pointer
 
 
 00180230: 27bdffe0 addiu r29,r29,0xffe0
 00180234: afb00010 sw r16,0x0010(r29)
 00180238: 00808021 addu r16,r4,r0               r16 = unit pointer
 0018023c: afbf0018 sw r31,0x0018(r29)
 00180240: afb10014 sw r17,0x0014(r29)
 00180244: 92040047 lbu r4,0x0047(r16)           r4 = X coordinate
 00180248: 96060048 lhu r6,0x0048(r16)           r6 = Y coordinate ++ other position info
 0018024c: 92050048 lbu r5,0x0048(r16)           r5 = Y coordinate
 00180250: 0c0600b2 jal 0x001802c8               [[Set map Item/trap data]] - move-find item check call (X, Y, is_high)
 00180254: 000633c2 srl r6,r6,0x0f               r6 = is high elevation
 00180258: 34040064 ori r4,r0,0x0064
 0018025c: 34050064 ori r5,r0,0x0064
 00180260: 92030024 lbu r3,0x0024(r16)           load Brave
 00180264: 00408821 addu r17,r2,r0               r17 = move-find item
 00180268: 0c017833 jal 0x0005e0cc               [[Check if Random is greater/equal to Chance]] - r2 = roll(100, 100 - Brave)
 0018026c: 00a32823 subu r5,r5,r3                ^ roll for rare
 00180270: 14400004 bne r2,r0,0x00180284         branch if common
 00180274: 34040033 ori r4,r0,0x0033             r4 = 0x33 (variable 0x33 = Current map)
 
 if rare:
 00180278: 92220002 lbu r2,0x0002(r17)               r2 = rare item
 0018027c: 080600a2 j 0x00180288
 00180280: 00000000 nop                         
 
 if common:
 00180284: 92220003 lbu r2,0x0003(r17)               r2 = common item
 
 
 00180288: 3c108019 lui r16,0x8019 
 0018028c: 2610f8a4 addiu r16,r16,0xf8a4         r16 = 0x8018f8a4 (ID of found item)
 00180290: 0c04ed64 jal 0x0013b590               [[Get Script Variable]] - load map ID
 00180294: a2020000 sb r2,0x0000(r16)            store found item ID
 00180298: 00402021 addu r4,r2,r0                r4 = map ID
 0018029c: 92250001 lbu r5,0x0001(r17)           r5 = trap flags
 001802a0: 0c060131 jal 0x001804c4               [[Move find item flag calculation]] - r2, trapflags,itemfound=True
 001802a4: 34060001 ori r6,r0,0x0001             r6 = finding item??
 001802a8: 2602fffc addiu r2,r16,-0x0004         
 001802ac: ae00fffc sw r0,-0x0004(r16)           clear ?? at 0x8018f89c?
 001802b0: 8fbf0018 lw r31,0x0018(r29)
 001802b4: 8fb10014 lw r17,0x0014(r29)
 001802b8: 8fb00010 lw r16,0x0010(r29)
 001802bc: 27bd0020 addiu r29,r29,0x0020
 001802c0: 03e00008 jr r31
 001802c4: 00000000 nop
 
== Return Locations ==
 
 00072168: [[Main Post Movement]]