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Collision response

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I have one vector for the surface where the object has collided, and one vector that is the movement vector (current pos - last pos). I want to be able to "slide" by that surface, how do I do it?

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if your object is a point:
move the current position in the direction of the normal, until it''s on the plane. so:

distance = DotProduct(curPos - plane.pivot,plane.normal);
curPos -= plane.normal * distance;

if it''s a sphere, just subtract the radius of the sphere from distance:
distance = DotProduct(curPos - plane.pivot,plane.normal);
curPos -= plane.normal * (distance - radius);



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