Your tutorial is great.
I am trying to implement it into my game which is a hovercraft game.
If I place a node high up in a room how do I program the enemy craft to rotate upward and go up.

Thanks

What is stoping that is the my.tilt=0; in there. Also I wanted to add I've had personal issues keeping me out the loop recently. I hope to be back before too long.

Where's the problem with one dimensional arrays? As long as you use a binary heap there should be no problems.

The code you have in totorial1 is:
action patrol_path
{
var node_pos[3]; // temp storage for node position in AI
var node; // current node
var dist; // distance to node

// attach entity to nearest path
node = path_scan(me,my.x,my.pan,vector(360,180,1000));
if (node == 0) { beep();return; } // no path found

// find first waypoint
path_getnode(my,node,node_pos.x,null);


while (1)
{
// find distance
dist = vec_dist(node_pos.x,my.x);

// near target? Find next waypoint of the path
if (dist < 25) {
beep(); // you can comment this out is is nice for test though
node = path_nextnode(my,node,1);
path_getnode(my,node,node_pos.x,NULL);
}
vec_set(temp, node_pos.x);
vec_sub(temp, my.x);
vec_to_angle(my.pan, temp);

my.tilt = 0; // I'm a maniac
temp.x = 5 * time;
temp.y = 0;
temp.z = 0;

c_move (my, temp, nullvector, IGNORE_YOU + IGNORE_PASSABLE + IGNORE_PUSH + ACTIVATE_TRIGGER + GLIDE);

wait(1);
}
}

The code I marked in red is the movement code. How do I change it that if I set the node high up the enemey ship gos up? (I tried deleting my.tilt = 0; but it did not work.)
Also the line of code that turns the enemey towards the player(vec_to_angle(my.pan, temp)) makes the enemey ship snap into place, how do I make it rotate smoothly.

Thank you.

I dont think this has anything to do with pathfinding, but how about trying this for your tilt problem:

// create a vector skill beforehand

define target_angle,skill1;
define target_angle,skill2;
define target_angle,skill3;

// apply the target angle to the skills, not the entity itself

vec_set(temp, node_pos.x);
vec_sub(temp, my.x);
vec_to_angle(target_angle, temp);

//then apply the hover craft the new angles:

my.pan=target_angle.pan;
my.tilt=target_angle.tilt;

I think that should work.

(although this isnt helping to get off the tangent )

I had to use "var target_angle;" instead of the defines.

Besides for that it works great

Thank you.

if you want to use them as defines instead then use my.target_angle and so on in the functions instead of calling them like target_angle im not positive but a var might conflict if you have more then one ship in the level unless you declared them in the function then i dont think it would matter. this is just to my understanding of variables and their scope. so using them as defines is probally the best bet so that you can use them in as many functions as you want since it will point to that entitys skill instead of a global var. hope that makes sense

Off-topic

I tried using skills but I am getting errors in lines:
my.pan =my.target_angle.pan;
my.tilt = my.target_angle.tilt;

action patrol_path
{
var node_pos[3]; // temp storage for node position in AI
var node; // current node
var dist; // distance to node
var temp_angle[3];
var target_angle[3];
var temp_pan[3];
var rotation_speed = 6;
.
// get direction to target
vec_set(temp, node_pos.x);
vec_sub(temp, my.x);
vec_to_angle(temp_angle, temp);
.
// get difference of current angle to desired angle
target_angle.pan = ang(temp_angle.pan - my.pan);
target_angle.tilt = ang(temp_angle.tilt - my.tilt);
// move towards desired angle over time
temp_pan.pan = target_angle.pan * rotation_speed * time;
temp_pan.tilt = target_angle.tilt * rotation_speed * time;
temp_pan.roll = 0;
// must use c_rotate() to turn if using c_move()
c_rotate(my,temp_pan,IGNORE_YOU + IGNORE_PASSABLE + IGNORE_PUSH + ACTIVATE_TRIGGER + GLIDE);
// move the entity
c_move (my, temp, nullvector, IGNORE_YOU + IGNORE_PASSABLE + IGNORE_PUSH + ACTIVATE_TRIGGER + GLIDE);
.

That should be closer methinks.
Loco