Init gym

world/commons/Body_Part.py

@@ -0,0 +1,7 @@
+from math_ops.Matrix_4x4 import Matrix_4x4
+
+class Body_Part():
+    def __init__(self, mass) -> None:
+        self.mass = float(mass)
+        self.joints = []
+        self.transform = Matrix_4x4() # body part to head transformation matrix