.include "./macros.s"

.set $btn, 0x22 # R+Right
.set btn, mPadStatus

.control:
## check button
  lis r4, btn@ha
  lhz r4, btn@l(r4)
  cmplwi r4, $btn
  bne+ .done
## resetPosition
  mr r3, r30
  lwz r12, 0(r3) # vt
  lwz r12, 0x168(r12) # resetPosition
  mtlr r12
  blrl
## reset mtx
  #lfs f1, 0x118(r30)
  #lfs f2, 0x11c(r30)
  #lfs f3, 0x120(r30)
  psq_l f0, 0x118(r3), 0, gqr0
  psq_st f0, 0x15C(r3), 0, gqr0
  psq_st f0, 0x168(r3), 0, gqr0
  lwz r0, 0x120(r3)
  stw r0, 0x164(r3)
  stw r0, 0x170(r3)
  addi r3, r30, 0x174
  li32 r12, PSMTXIdentity
  mtlr r12
  blrl
## set x140 flag
### r3 = graph
  lwz r3, 0x138(r30)
### r4 = (cur index)*0x44 + 8
  lwz r4, 0x4(r3)
  mulli r4, r4, 0x44
  addi r4, r4, 8
### r3 = web
  lwz r3, 0(r3)
### r3 = &railnode[0]
  lwz r3, 4(r3)
### r3 = node flag
  lwzx r3, r3, r4
### r0 = r3&128 ? 2 : 0
  rlwinm r0, r3, 32-6, 0x2
  stw r0, 0x140(r30)
.done:
## orig
  lwz r0, 0x1b4(r1)