I have made a great looking terrain (HMP), but the collision detection isn't working for it. I seem to fall through the floor at random places. Does anyone know how to solve this problem. i'm using the player_move action for movement.

I've had problems with terrains and collision in the past, and through my searches, I found it was an ent_move problem(Even the head programmer here, JCL, admitted it) and the A5 script template action "Player_move" uses ent_move. So the solution would be A) abandoning terrains and opting for blocks or B) Doing something I've never done before with ent_move(And I've tried many different things for many many hours my friend) or C) Upgrading to the A6 templates and use their "BiPlayer_move" something or another action instead or D) Re-write the player_move(I'd suggest copying it beforehand because it's really easy to mess up the templates) code to use C_move or write your own code that uses C_move. If you're not much of a programmer or don't really want to stumble through the process of figuring how to get c_move to work(Like I did), I could just send you my code and you could modify it for your purposes.

I would go into a detailed analysis of why I suspect ent_move doesn't work with terrains but it's just speculation.

Of course, if you've stretched your terrain to ginormous proportions, that may be causing your falling-for-it syndrome. I also noticed that I tended to fall through terrain where the slope was greater then 40-50 degress with ent_move, so you could probably just ensure your hills and mountains aren't steeper than that. If you aren't up for that restriction(I sure wasn't), then you'd probably have to use c_move or use the A_6 template scripts. Since I'm the do-it-yourselfer coder, I opted for my own custom code with c_move.

thanks. I'll try rewriting player move i think. It didn't occur to me before. I tried using the newton terrain system, but it didn't get it to work. I tried using the A6 templates at first, but i didn't really understand them. For the moment the A5 templates is all i need for my FPS game.

I had almost the same problem... and to solve it used invisible/non-passable blocks... I placed them over the areas I had problems with (a big block for the floor and smaller blocks for collision with slopes greater than 50 degress)

It's not the perfect solution but it worked just fine for me...

Have you checked:

c_updatehull(terrain,1);

whenever I manpuleted the terrain ingame, I had the player falling thought the terrain too,
by using updatehull this was fixed.

my.narrow=off;
my.fat=off;
my.polygon=on;
would perhaps help you?

OK, i,ve tried rewriting player_move with c_move, and i've switched polygon on, i dont manipulate the terrain in game anyway, but i still have the same problem. would Biplayer_move work with the A5 weapons templates? i can actually understand them, unlike the a6 weapon templates which i cant.

I wrote my own movement script, and now it all works fne, no falling through the floor!! Thanks everyone for your help.