Important Formulas in This Chapter

So, now you have a few more tools for your toolbox. Here they are.

Convert angular velocity to x, y velocity:

 vx = speed * Math.cos(angle); vy = speed * Math.sin(angle); 

Convert angular acceleration (any force acting on an object) to x, y acceleration:

 ax = force * Math.cos(angle); ay = force * Math.sin(angle); 

Add acceleration to velocity:

 vx += ax; vy += ay; 

Add velocity to position:

 movieclip._x += vx; movieclip._y += vy;