View source for Focus Speed Event Instruction

 #   ROUTINE: FOCUS SPEED EVENT INSTRUCTION
 #       Parameters:
 #           r4 = (params) Event instruction parameters
 #           r5 = (p2) *(0x80165f9c) + 0x68
 #           r6 = (p3) *(0x80165f9c) + 0x74
 
 80147780: 27bdffa0 addiu r29,r29,-0x0060
 80147784: afb40048 sw r20,0x0048(r29)
 80147788: 0080a021 addu r20,r4,r0                   #   params
 8014778c: afb1003c sw r17,0x003c(r29)
 80147790: 00a08821 addu r17,r5,r0                   #   p2OffsetPtr = p2
 80147794: afb00038 sw r16,0x0038(r29)
 80147798: 00c08021 addu r16,r6,r0                   #   p3
 8014779c: afbf005c sw r31,0x005c(r29)
 801477a0: afbe0058 sw r30,0x0058(r29)
 801477a4: afb70054 sw r23,0x0054(r29)
 801477a8: afb60050 sw r22,0x0050(r29)
 801477ac: afb5004c sw r21,0x004c(r29)
 801477b0: afb30044 sw r19,0x0044(r29)
 801477b4: 0c05181e jal 0x80146078                   #   speed = [[Load Halfword]] (params);
 801477b8: afb20040 sw r18,0x0040(r29)
 801477bc: 00021400 sll r2,r2,0x10
 801477c0: 00021403 sra r2,r2,0x10                   #   speed
 801477c4: 26940003 addiu r20,r20,0x0003             #   params + 3
 801477c8: 00009821 addu r19,r0,r0                   #   r19 = 0
 801477cc: 341e2710 ori r30,r0,0x2710                #   0x2710
 801477d0: 27b70010 addiu r23,r29,0x0010             #   localBasePtr
 801477d4: 02e09021 addu r18,r23,r0                  #   localPtr = localBasePtr
 801477d8: 0200a821 addu r21,r16,r0                  #   p3OffsetPtr = p3
 801477dc: 02808021 addu r16,r20,r0                  #   paramPtr = params + 3               // First param of the following Camera instruction
 801477e0: afa20030 sw r2,0x0030(r29)                #   speed
                                                     #   do {
 801477e4: 0c05181e jal 0x80146078                   #       param = [[Load Halfword]] (paramPtr);       
 801477e8: 02002021 addu r4,r16,r0               
 801477ec: 00021400 sll r2,r2,0x10
 801477f0: 00021c03 sra r3,r2,0x10                   #       param
 801477f4: 147e0003 bne r3,r30,0x80147804            #       if (param == 0x2710) {
 801477f8: 00000000 nop
 801477fc: 08051e09 j 0x80147824
 80147800: ae400000 sw r0,0x0000(r18)                #           *localPtr = 0
                                                     #       } else {
 80147804: 8e220000 lw r2,0x0000(r17)                #           dividend = *p2OffsetPtr
 80147808: 00000000 nop                              
 8014780c: 04410002 bgez r2,0x80147818               #           if (dividend < 0) {
 80147810: 00000000 nop
 80147814: 244203ff addiu r2,r2,0x03ff               #               dividend = dividend + 1023
                                                     #           }
 80147818: 00021283 sra r2,r2,0x0a                   #           dividend / 1024
 8014781c: 00621023 subu r2,r3,r2                    #           param - (dividend / 1024)
 80147820: ae420000 sw r2,0x0000(r18)                #           *localPtr = param - (dividend / 1024)
                                                     #       }
 80147824: 0c05181e jal 0x80146078                   #       param = [[Load Halfword]] (paramPtr + 6); 
 80147828: 26040006 addiu r4,r16,0x0006
 8014782c: 00021400 sll r2,r2,0x10
 80147830: 00021c03 sra r3,r2,0x10                   #       param
 80147834: 147e0003 bne r3,r30,0x80147844            #       if (param == 0x2710) {
 80147838: 00000000 nop
 8014783c: 08051e15 j 0x80147854
 80147840: ae400010 sw r0,0x0010(r18)                #           *(localPtr + 16) = 0
                                                     #       } else {
 80147844: 8ea20000 lw r2,0x0000(r21)                #           *p3OffsetPtr
 80147848: 00000000 nop
 8014784c: 00621023 subu r2,r3,r2                    #           param - *p3OffsetPtr
 80147850: ae420010 sw r2,0x0010(r18)                #           *(localPtr + 16) = param - *p3OffsetPtr
                                                     #       }
 80147854: 8e420000 lw r2,0x0000(r18)                #       local = *localPtr
 80147858: 00000000 nop
 8014785c: 00420018 mult r2,r2                       
 80147860: 00001812 mflo r3                          #       local * local
 80147864: 8e420010 lw r2,0x0010(r18)                #       local2 = *(localPtr + 10)
 80147868: 00000000 nop
 8014786c: 00420018 mult r2,r2                       
 80147870: 26b50004 addiu r21,r21,0x0004             #       p3OffsetPtr = p3OffsetPtr + 4
 80147874: 26100002 addiu r16,r16,0x0002             #       paramPtr = paramPtr + 2
 80147878: 26310004 addiu r17,r17,0x0004             #       p2OffsetPtr = p2OffsetPtr + 4
 8014787c: 26520004 addiu r18,r18,0x0004             #       localPtr = localPtr + 4
 80147880: 00001012 mflo r2                          #       local2 * local2
 80147884: 02c2b021 addu r22,r22,r2                  #       r22 = r22 + (local2 * local2)           // r22 starts as uninitialized register value?????
 80147888: 26e2000c addiu r2,r23,0x000c              #       localBasePtr + 12
 8014788c: 0242102a slt r2,r18,r2
 80147890: 1440ffd4 bne r2,r0,0x801477e4
 80147894: 02639821 addu r19,r19,r3                  #       r19 = r19 + (local * local)
                                                     #   } while (localPtr < (localBasePtr + 12));
 80147898: 00131040 sll r2,r19,0x01                  #   r19 * 2
 8014789c: 0056102a slt r2,r2,r22
 801478a0: 10400003 beq r2,r0,0x801478b0             #   if ((r19 * 2) < r22) {
 801478a4: 001617c2 srl r2,r22,0x1f                  
 801478a8: 02c21021 addu r2,r22,r2
 801478ac: 00029843 sra r19,r2,0x01                  #       r19 = (r22 * 2) / 2
                                                     #   }
 801478b0: 0c006fce jal 0x8001bf38                   #   result_0x1bf38 = [[Frame Timing Related? (0x1bf38)]] (r19);
 801478b4: 02602021 addu r4,r19,r0
 801478b8: 8fa70030 lw r7,0x0030(r29)                #   speed
 801478bc: 00000000 nop
 801478c0: 0047001a div r2,r7                        
 801478c4: 00009812 mflo r19                         #   frames = result_0x1bf38 / speed
 801478c8: 00000000 nop
 801478cc: 16600002 bne r19,r0,0x801478d8
 801478d0: 2684000e addiu r4,r20,0x000e              #   cameraFramesPtr = params + 17
                                                     #   if (frames == 0) {
 801478d4: 34130001 ori r19,r0,0x0001                #       frames = 1
                                                     #   }
 801478d8: 00132c00 sll r5,r19,0x10
 801478dc: 0c051825 jal 0x80146094                   #   [[Store Halfword]] (cameraFramesPtr, frames);
 801478e0: 00052c03 sra r5,r5,0x10
 801478e4: 8fbf005c lw r31,0x005c(r29)
 801478e8: 8fbe0058 lw r30,0x0058(r29)
 801478ec: 8fb70054 lw r23,0x0054(r29)
 801478f0: 8fb60050 lw r22,0x0050(r29)
 801478f4: 8fb5004c lw r21,0x004c(r29)
 801478f8: 8fb40048 lw r20,0x0048(r29)
 801478fc: 8fb30044 lw r19,0x0044(r29)
 80147900: 8fb20040 lw r18,0x0040(r29)
 80147904: 8fb1003c lw r17,0x003c(r29)
 80147908: 8fb00038 lw r16,0x0038(r29)
 8014790c: 27bd0060 addiu r29,r29,0x0060
 80147910: 03e00008 jr r31
 80147914: 00000000 nop