Add Smooth Move

[Fengshen1]

Improve Chinese translation

[Fengshen1]

@Suprcode Now there is no junk code and the picture is smoother

[Suprcode]

The drawing is smoother now - but on window mode all the checkered shadows flash (like all the trees and buildings)

I wonder if this issue can be fixed?

[Fengshen1]

绘图现在更平滑了 - 但在窗口模式下，所有方格阴影都会闪烁（就像所有的树木和建筑物一样）

我想知道这个问题是否可以解决？

Add anti aliasing, but I'm not sure if you will pass it

[Suprcode]

Please keep pr open. It will be reviewed when I get chance.

Alternatively open a separate pr without smooth move so the other changes can be merged in the meantime.