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I'm trying to get my charactr for my game to walk up a set of stairs. I thought I would make a matrix and lay it over the stairs but I cant seem to be able to rotate the matrix because I cant see a command that lets you do it. Is there another way to do it?

void dbSetMatrixHeight ( int MatrixNumber, int Tilex, int Tilez, float Height )

With this function you can adjust the height of any node in the matrix.

Within 2 loops ( x loop, z loop) adjust you matrix nodes into a ramp.

With the right code you can make the ramp slope in any directional angle.

The only problem will be at the top of your stairs if they are not rising in purely an X or Z direction, because you will have a corner lip of the matrix rising above the top of the stairs height. This may cause the character to appear to do a small jump at the top of the stairs.

Are the stairs Objects? If it were me, I'd do something like:



As you can see from the code, the basic idea is to start a line from where you want the character to go next, up half of the lines height and extend it down half of its height. If the line intersects a polygon of your stair object, then the IntersectObject function will return a distance value; the distance from where the line began, to the point of intersection on the object. Thus you simply have to place your character at the start of the line minus the length of the collision.

Of course this would only calculate the ground collision, but with a little work the same concept could be implemented with collisions is any direction.