android - How to draw a smooth path on touch in Andengine -

i doing game air control in andengine. need draw path user touches character , give direction it. character should follow path constant speed.

right taking every point when user touches screen , finding distance between each point , adding few more points in between make equal in distance.

to show path on scene making 1 rectangle on each point , attaching scene. heavy , not feasible when have many characters on screen

please me doing in , engine.