Collision polygon is your collision mask, you can add points and shape it as you like, but with more points it becomes slower. You can't have pixel perfect collisions in C2, yet. <img src="smileys/smiley2.gif" border="0" align="middle">
Read about it here.
I took out the part where Ashley explains it:
Thanks Noga for ur reply, but i tried the collision polygon and it doesn't work perfectly.
As i mentioned before I'm trying to create platform school game that is already created using construct classic but this time i want to create it using construct classic, so the first two problems i faced are:
1. The collision mask cause if i use the default created one the sprite will start flashing all the time.
2. The auto rotate to make the sprite looks nice and symmetric if he is moving to right or left, jumping right or left and falling right and left.