Algodoo

But I am is going to make a rocket,maybe your quest will be late...sorry
About the "Hua qiang mai gua",it orginal is a 2002 TV--"Zheng Fu"

emmm...I see your another comment on"learn chinese",I can't believe there is another chinese in algodoo too!also,Now I am grade 6 now.
(If algodoo comment can chinese,I will use chinese)

emmm...sorry.my sence"Ji Ni Tai Mei"was banned.Reason is algodoo can't allow like poem thing...So I maybe will make a "non story version"

Oh...
I'm a Chinese,are you a Chinese?

Good!!!
很不错，你是中国人？

use this,we even can make a half adder,full adder,ALU,register,RAM,even a PC

very good designs

http://nandgame.com/
a website to learn (or play?)eletric logic circuit

?

oh,yes

now most of CRHs are use China own parts and techologies,only apperance like other countries train,but techologies are all China own

To @Xray : because I want to make the astronaut can't get into orbit by itself,so when it's speed faster than 5m/s or altitude higher than about 30 m,the force which make astronaut move will be very weak, but I haven't done the SOI determine(Check which celestial body mainy effect gravity on the astronaut),so the altitude is always based on Earth, that mean the astronaut almost can't move in other celestial bodies.I had do many works on the SOI determine,but it still not done yet,I will fix it soon
Also, the rectangle has no any weight and collide layer,it will shows which SOI you are in,your speed and altitude,and map,and informations for every celestial body
The astronaut can't leave the Earth but the spacecft could,so you can let the astronaut take the rocket to explore

TO @Xray : Maybe I set the rotate force of the astronaut is too high?

To @foozy Yeah I often lose control with rotating too,but it's hard slove...I don't know how to fix it