SS determineReload() partial decompilation

void determineReload(uint room,int param_2)

{
  bool bVar1;
  CF *cf;
  Reloader *reloader;
  int iVar2;
  int iVar3;
  int iVar4;
  uint uVar5;
  uint *puVar6;
  void *pvVar7;
  uint *puVar8;
  uint *puVar9;
  uint uVar10;
  undefined2 local_48;
  undefined2 linkAng;
  undefined2 _;
  uint linkX;
  uint linkY;
  uint linkZ;

  _savegpr_21();
  iVar2 = *(int *)(param_2 + 8);
  iVar3 = FUN_801b3ea0(DAT_805789c0,room);
  *(undefined2 *)(iVar3 + 0x550) = *(undefined2 *)(param_2 + 4);
  *(int *)(iVar3 + 0x524) = param_2 + iVar2;
  reloader = ReloaderPtr;
  cf = CFptr;
  if (room == (uint)DAT_SpawnSlaveRoom) {
    local_48 = 0;
    linkAng = 0;
    uVar10 = 0x7ffffff;
    iVar2 = 0;
    bVar1 = false;
    _ = 0;
    if (ReloadType == 0) {
      if (ReloaderPtr->t0csFlag == 0) {
        if (ReloaderPtr->t0posFlag == 0) {
          puVar8 = (uint *)FUN_801b6d80(iVar3,(uint)DAT_SpawnSlaveEntrance);
          uVar10 = *puVar8;
          puVar9 = puVar8 + 1;
          puVar8 = puVar8 + 4;
          iVar2 = 1;
        }
        else {
          pvVar7 = get-240(ReloaderPtr);
          linkZ = *(uint *)((int)pvVar7 + 0x34);
          puVar9 = &linkX;
          linkY = *(uint *)((int)pvVar7 + 0x30);
          puVar8 = (uint *)&local_48;
          linkX = *(uint *)((int)pvVar7 + 0x2c);
          linkAng = *(undefined2 *)((int)pvVar7 + 0x38);
          reloader->t0posFlag = 0;
        }
      }
      else {
        bVar1 = true;
        puVar9 = (uint *)get-27c(ReloaderPtr);
        linkAng = *(undefined2 *)(puVar9 + 3);
        puVar8 = (uint *)&local_48;
        uVar10 = puVar9[4];
        reloader->t0csFlag = 0;
      }
    }
    else {
      if (ReloadType == 2) {
        puVar8 = (uint *)getDataCur-001c(CFptr);
        linkZ = puVar8[2];
        linkY = puVar8[1];
        linkX = *puVar8;
        iVar3 = getDataCur-5310(cf);
        linkAng = (undefined2)iVar3;
        puVar9 = &linkX;
        puVar8 = (uint *)&local_48;
        uVar10 = 0x7ffff1b;
      }
      else {
        if (ReloadType == 3) {
          puVar8 = (uint *)getDataCur-0028(CFptr);
          linkZ = puVar8[2];
          linkY = puVar8[1];
          linkX = *puVar8;
          iVar4 = getDataCur-5312(cf);
          linkAng = (undefined2)iVar4;
          puVar9 = &linkX;
          puVar8 = (uint *)&local_48;
          uVar5 = (**(code **)(*DAT_8057865c + 0x2c))(DAT_8057865c,0x2f0);
          if (((uVar5 & 0xffff) == 0) &&
             (uVar5 = (**(code **)(*DAT_8057865c + 0x2c))(DAT_8057865c,0x77), (uVar5 & 0xffff)== 0)
             ) {
            puVar6 = (uint *)FUN_801b6d80(iVar3,(uint)DAT_SpawnSlaveEntrance);
            iVar3 = FUN_8005c6b0(*puVar6);
            if (iVar3 == 1) {
              uVar10 = *puVar6;
            }
          }
        }
        else {
          uVar5 = getDataCur-53a9(CFptr);
          if (((uVar5 & 0xff) == 0) && (ReloadType != 4)) {
            puVar8 = (uint *)getDataCur-0010(cf);
            linkZ = puVar8[2];
            linkY = puVar8[1];
            linkX = *puVar8;
            iVar4 = getDataCur-530e(cf);
            linkAng = (undefined2)iVar4;
            uVar5 = getDataCur-53b5(cf);
            if ((uVar5 & 0xff) == 2) {
              puVar8 = (uint *)FUN_801b6d80(iVar3,(uint)DAT_SpawnSlaveEntrance);
              uVar10 = *puVar8;
            }
            puVar9 = &linkX;
            puVar8 = (uint *)&local_48;
          }
          else {
            puVar8 = (uint *)FUN_801b6d80(iVar3,(uint)DAT_SpawnSlaveEntrance);
            uVar10 = *puVar8;
            puVar9 = puVar8 + 1;
            puVar8 = puVar8 + 4;
          }
        }
      }
      ReloadType = 0;
      if (reloader->t0csFlag != 0) {
        reloader->t0csFlag = 0;
      }
    }
    FUN_8002e780(200,-1,uVar10,puVar9,puVar8,0,0xffffffff);
    if (!bVar1) {
      FUN_801bb0e0(ReloaderPtr,puVar9,puVar8,iVar2);
    }
    FUN_801b3eb0(DAT_805789c0,(byte)room);
    thunk_FUN_802e2a00(0x291,DAT_805789c0,0,0);
    FUN_8019f380();
    FUN_801a77d0();
  }
  _restgpr_21();
  return;
}