Hi again,

Im making a program in c++ using openGL (glut) but having a little trouble figuring out how i would increment along a certain path...

I have quite a few functions that require it like the one below, where i have the Point (contains x,y,z components) of the waypoint i need to head towards, and i have the angle to that waypoint from the current x,y,z position. Plus i can get the current position Point by just calling body->Get_Position(); if i need too.

But im just not sure how i would set the incrementation Point's x,y,z to send to the Set_Position function.

I would take a guess and say that if its walking and the angle rotates the view so its facing the waypoint, i would just increment the -z value of the current Point position by WALK_SPEED ? (WALK_SPEED is a #define)

but im not sure. Could anyone please give me some advice?

Thanks,

Code:

void AI::Patrol() {
body->set_Walking(true);
body->set_Running(false);
body->set_Still(false);
Point increment;
Point wp = Next_Waypoint();
float angle = Get_Position_Angle(wp);
float range = Get_Range(wp);
//How to get the incrementation in step?
//increment.x = ?
//increment.y = ?
//increment.z = ?
//WALK_SPEED ?
//RUN_SPEED ?
body->Set_Position(increment);
body->Set_Yaw(angle);
}

(i get the angle through this function, which i hope is correct)

Code:

float AI::Get_Position_Angle(Point pos) {
float angle;
//Get the float angle between NPC position and parametre position
angle = atan2(body->Get_Position().z-pos.z, body->Get_Position().x-pos.x)*(180 / PI);
angle -= body->Get_Yaw();
return angle;
}