reduce stack usage (cause some crashes in low-stack tests)

fix crashing bug in changeVisualShape
add differential gear version of racecar (only 2 back wheels are powered)
This commit is contained in:
Erwin Coumans
2017-06-20 20:22:14 -07:00
parent 61f27a5c72
commit 71170d6384
7 changed files with 857 additions and 33 deletions

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