Something height related?
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called with ffc1, argument 1 = 3 000897dc: 27bdffe0 addiu r29,r29,0xffe0 000897e0: afb00010 sw r16,0x0010(r29) 000897e4: 00808021 addu r16,r4,r0 000897e8: afbf0018 sw r31,0x0018(r29) 000897ec: afb10014 sw r17,0x0014(r29) 000897f0: 8e11008c lw r17,0x008c(r16) #load distortion var. 000897f4: 8e030088 lw r3,0x0088(r16) #load distort counter 000897f8: 8e040090 lw r4,0x0090(r16) #load temp. arg 000897fc: 10600005 beq r3,r0,0x00089814 #branch if distort, counter is 0 00089800: 34020001 ori r2,r0,0x0001 00089804: 1062000e beq r3,r2,0x00089840 #if 1 00089808: 00000000 nop 0008980c: 08022621 j 0x00089884 #otherwise, skip 00089810: ae11008c sw r17,0x008c(r16) #store distortion variable back.
If distort counter = 0 00089814: 0c01f4fd jal 0x0007d3f4 #0007d3f4 - 0007d474 - obtain height of unit being ridden 00089818: 02002021 addu r4,r16,r0 0008981c: 00022300 sll r4,r2,0x0c #mount's height * 0x1000 00089820: 86030042 lh r3,0x0042(r16) #load height mod 00089824: 8e020088 lw r2,0x0088(r16) #load distort counter 00089828: 00031b00 sll r3,r3,0x0c #height mod * 0x1000 0008982c: 00831823 subu r3,r4,r3 #mount height - unit's height 00089830: 24420001 addiu r2,r2,0x0001 00089834: 0071001a div r3,r17 #divide difference by distortion variable 00089838: 00008812 mflo r17 0008983c: ae020088 sw r2,0x0088(r16) #store incremented distort counter
if distort counter = 0, 1 00089840: 8e03001c lw r3,0x001c(r16) #load unit's height mod (* 0x1000) 00089844: 00000000 nop 00089848: 0064102a slt r2,r3,r4 #true if unit's height is less than mount's height 0008984c: 10400003 beq r2,r0,0x0008985c #branch if unit's height is greater than mount's height (loop until so) 00089850: 02231021 addu r2,r17,r3 #unit's height + height difference / distortion variable 00089854: 08022619 j 0x00089864 00089858: ae02001c sw r2,0x001c(r16) #store new height 0008985c: ae04001c sw r4,0x001c(r16) #store mount's height as unit's height 00089860: a2000087 sb r0,0x0087(r16) #clear distortion wait check 00089864: 8e02001c lw r2,0x001c(r16) #load unit's height 00089868: 00000000 nop 0008986c: 04410002 bgez r2,0x00089878 #negative division check 00089870: 00000000 nop 00089874: 24420fff addiu r2,r2,0x0fff 00089878: 00021303 sra r2,r2,0x0c #divide by 0x1000 0008987c: a6020042 sh r2,0x0042(r16) #store back as height mod 00089880: ae11008c sw r17,0x008c(r16) #restore distortion variable 00089884: ae040090 sw r4,0x0090(r16) #store mount height for next loop 00089888: 8fbf0018 lw r31,0x0018(r29) 0008988c: 8fb10014 lw r17,0x0014(r29) 00089890: 8fb00010 lw r16,0x0010(r29) 00089894: 27bd0020 addiu r29,r29,0x0020 00089898: 03e00008 jr r31 0008989c: 00000000 nop
