HOPEFULLY this tutorial will be easier to follow! AND you no longer have to download the MMD Sims 4 Bases! YAY!!!
Also, my sincerest apologies to Mac users! You probably won't be able to do this tutorial (UNLESS you use a virtual machine, MAYBE)!
LINKS:
Bandizip: https://en.bandisoft.com/bandizip/
The Sims 4 Ripper: https://modthesims.info/d/635720/ts4-...
Sims4Studio: https://sims4studio.com/thread/29786/...
Rokoko Blender Plugin: https://support.rokoko.com/hc/en-us/a...
MMD Tools Blender Plugin: https://github.com/UuuNyaa/blender_mm...
PMX Editor: https://www.deviantart.com/inochi-pm/...
MikuMikuDance: https://learnmmd.com/downloads/
OPTIONAL: IF you want to rename your Sims 4 MMD model bones to Japanese (This is ONLY if you're using a premade motion data, or in my case premade finger poses (which you would ONLY need to rename the finger bones)), here's the corresponding MMD bones for each sims joint!
全ての親 - b__ROOT__
センター - b__ROOT_bind__
上半身 - b__Spine0__
上半身2 - b__Spine1__
上半身3 - b__Spine2__
首 - b__Neck__
頭 - b__Head__
下半身 - b__Pelvis__
LEFT SIDE:
左目 - b__L_Eye__
左肩 - b__L_Clavicle__
左腕 - b__L_UpperArm__
左ひじ - b__L_Forearm__
左手首 - b__L_Hand__
左親指0 - b__L_Thumb0__
左親指1 - b__L_Thumb1__
左親指2 - b__L_Thumb2__
左人指1 - b__L_Index0__
左人指2 - b__L_Index1__
左人指3 - b__L_Index2__
左中指1 - b__L_Mid0__
左中指2 - b__L_Mid1__
左中指3 - b__L_Mid2__
左薬指1 - b__L_Ring0__
左薬指2 - b__L_Ring1__
左薬指3 - b__L_Ring2__
左小指1 - b__L_Pinky0__
左小指2 - b__L_Pinky1__
左小指3 - b__L_Pinky2__
左足 - b__L_Thigh__
左ひざ - b__L_Calf__
左足首 - b__L_Foot__
左つま先 OR 左足先EX - b__L_Toe__
左足IK - b__L_Foot__IK
左つま先IK - b__L_Toe__IK
RIGHT SIDE (Basically the same as the left side, EXCEPT you're replacing 左 with 右):
右目 - b__R_Eye__
右肩 - b__R_Clavicle__
右腕 - b__R_UpperArm__
右ひじ - b__R_Forearm__
右手首 - b__R_Hand__
右親指0 - b__R_Thumb0__
右親指1 - b__R_Thumb1__
右親指2 - b__R_Thumb2__
右人指1 - b__R_Index0__
右人指2 - b__R_Index1__
右人指3 - b__R_Index2__
右中指1 - b__R_Mid0__
右中指2 - b__R_Mid1__
右中指3 - b__R_Mid2__
右薬指1 - b__R_Ring0__
右薬指2 - b__R_Ring1__
右薬指3 - b__R_Ring2__
右小指1 - b__R_Pinky0__
右小指2 - b__R_Pinky1__
右小指3 - b__R_Pinky2__
右足 - b__R_Thigh__
右ひざ - b__R_Calf__
右足首 - b__R_Foot__
右つま先 OR 右足先EX - b__R_Toe__
右足IK - b__R_Foot__IK
右つま先IK - b__R_Toe__IK
In the bone tab (on the main menu window) ALL bones (EXCPET Root, root bind, and ALL of the facial joints (Squint, the eyebrows, eye lids) (NOT the eyes themselves)) click MVN (next to set) to turn movement OFF! This will ONLY allow rotation in the bones!
Also, parent-child (Link to) The parent bones are usually already done, so you don't need to worry...however, the child bones...
b__Spine0__ child is b__Spine1__
b__Spine1__ child is b__Spine2__
b__Spine2__ child is b__Neck__
b__Neck__ child is b__Head__
b__Head__ does NOT have a child, however, you CAN put some numbers in the offset (for me, the head offset is 0, 1, 0)! THIS is optional and you do NOT have to put anything IN the offset!
For mirror sided joints, make sure to child them to the correct side (Right side would child to right side, left to left) So, b__R_Clavicle__ child would be b__R_UpperArm__ and b__L_Clavicle__ child would me b__L_UpperArm__
b__R/L_Clavicle__ child is b__R/L_UpperArm__
b__R/L_UpperArm__ child is b__R/L_Forearm__
b__R/L_Forearm__ child is b__R/L_Hand__
b__R/L_Hand__ no child needed
b__R/L_Thumb0__ child is b__R/L_Thumb1__
b__R/L_Thumb1__ child is b__R/L_Thumb2__
b__R/L_Thumb2__ no child needed
b__R/L_Pinky0__ child is b__R/L_Pinky1__
b__R/L_Pinky1__ Child is b__R/L_Pinky2__
b__R/L_Pinky2__ no child needed
and so on...
For the IK...
I highlighted b__R/L_Foot__ (and b__R/L_Toe__) and duplicated them by pressing CTRL+D on my keyboard! I then changed the name to b__R/L_Foot__IK (b__R/L_Toe__IK) and in set I selected ROT, MVN, IK, VIS, Enable.
For b__R/L_Foot__IK: CTRL + Click b__R/L_Thigh__ AND b__R/L_Calf__ and CTRL and X (or right click-Copy Index), then select the foot IK over on the side, there are IK preferences, in the link area paste the thigh and calf (CTRL+V) OR right click copy from index.
for b__R/L_Toe__IK, same step EXCEPT you want to ONLY copy index b__R/L_Foot__
For the IKs' Loops and Angles:
Foot IK - Loop is '40' Angle is '114.5916'
Toe IK - Loop is '3' Angle is '229.1831'
For the calf (in the foot IK index link), be sure to click 'Limit Angle' in the first X box '-180' in the second X box '-0.5'
And that's basically it! IF you have ANY questions, don't hesitate to ask in the comments below and I will try my best to help!!!