Posted By: PadMalcom
Find nearest path point to an entity - 07/20/14 01:48
path_spline in general starts at dist=0. To determine the nearest point on the path from an entity you can use:
So you can, for instance, spawn an entity next to the player and the entity knows at what distance it should start path_spline to directly start at the nearest position to the path.
Code:
var get_nearest_path_point(ENTITY* ent, char* pathname)
{
ENTITY* e = ent_create(NULL, ent->x, NULL);
path_set(e, pathname);
var length = path_length(e);
var optDist = 0;
var entDist = 10000;
var dist = 0;
var vLastPos[3];
var vDir[3];
while(dist <= length)
{
path_spline(e,e.x,dist);
dist += 5*time_step;
if (vec_dist(e->x, ent->x) < entDist) {
entDist = vec_dist(e->x, ent->x);
optDist = dist;
}
}
ptr_remove(e);
return optDist;
}
So you can, for instance, spawn an entity next to the player and the entity knows at what distance it should start path_spline to directly start at the nearest position to the path.