+++ /dev/null
-
-// huffware script: simple follower script, by fred huffhines.
-//
-// this has been condensed from other pet scripts but still retains all the vitamins!
-//
-// this script is licensed by the GPL v3 which is documented at: http://www.gnu.org/licenses/gpl.html
-// do not use it in objects without fully realizing you are implicitly accepting that license.
-//
-
-// global constants...
-
-float HEIGHT_ABOVE_AVATAR = 0.3; // how far above the av do we float.
-float ROOM_FOR_ERROR = 0.1; // how far away from the target locale can we roam.
-float MAXIMUM_VELOCITY = 200.0; // the fastest the object can zoom towards us.
-float SENSOR_PERIOD = 1.0; // how frequently we look for the avatar.
-float SENSOR_RANGE = 64.0; // the farthest away we will try to look for the avatar.
-
-// global variables...
-
-vector last_detected_position; // where the avatar was last detected.
-integer target_identifier; // the id assigned when we registered our target.
-integer last_physics_state; // this remembers if physics should be enabled currently.
-vector perch_position; // place we inhabit near the owner.
-
-// returns the location where we should perch, given the target's location.
-vector target_to_perch(key av, vector target)
-{
- vector av_bounds = llGetAgentSize(av);
- return <target.x, target.y, target.z + av_bounds.z / 2.0 + HEIGHT_ABOVE_AVATAR>;
-}
-
-// returns the location of the target given where we're trying to aim at.
-vector perch_to_target(key av, vector perch)
-{
- vector av_bounds = llGetAgentSize(av);
- return <perch.x, perch.y, perch.z - av_bounds.z / 2 - HEIGHT_ABOVE_AVATAR>;
-}
-//hmmm: the two target and perch funcs both assume we don't want any lateral offset.
-// and currently they're only taking into account the avatar's size in the z direction.
-
-
-// makes the pet completely stop travelling around and just sit there.
-cease_movement()
-{
- llStopMoveToTarget();
- llTargetRemove(target_identifier);
- full_stop();
- llSetStatus(STATUS_PHYSICS, FALSE);
- last_physics_state = FALSE;
- // if we're not quite there, jump to the perch.
- if (llVecDist(perch_position, llGetPos()) > ROOM_FOR_ERROR) {
- // we're not close enough so make a flying leap.
-//llOwnerSay("jumping to perch at " + (string)perch_position + ", was at " + (string)llGetPos());
- llSetPos(perch_position); // make us very accurate until something changes.
- }
-}
-
-// tells the pet to target the avatar "av" at the location "pos". this will assume
-// the avatar is actually present in the same sim when it calculates the avatar's size.
-// we use that size in calculating where to perch nearby the avatar.
-move_toward_target(key av, vector destination)
-{
- // first of all we'll remember where we're supposed to go.
- perch_position = target_to_perch(av, destination);
- // now see how far away we are from that.
- float distance = llVecDist(perch_position, llGetPos());
- if (distance < 1.0) {
- // we're close enough; stop moving for a bit.
-//llOwnerSay("dist small enough to go non-phys: " + (string)distance);
- cease_movement();
- return;
- }
- // well, now we know that we need to move somewhere. let's set up a
- // physics target and head that way.
- llSetStatus(STATUS_PHYSICS, TRUE);
- last_physics_state = TRUE;
- llTargetRemove(target_identifier);
- float time = distance / MAXIMUM_VELOCITY;
- // if we go too low, then SL will ignore the move to target request.
- if (time < 0.14) time = 0.14;
-//llOwnerSay("tau=" + (string)time);
- target_identifier = llTarget(perch_position, ROOM_FOR_ERROR);
- llMoveToTarget(perch_position, time);
-}
-
-// startup the object.
-initialize()
-{
- llSetStatus(STATUS_PHYSICS, TRUE);
- last_physics_state = TRUE;
- llSetBuoyancy(1.0);
- llSetStatus(STATUS_PHANTOM, TRUE);
- llSensorRemove();
- // start looking for the owner.
- llSensorRepeat("", llGetOwner(), AGENT, SENSOR_RANGE, PI * 2, SENSOR_PERIOD);
-}
-
-// sets the object's speed to "new_velocity".
-// if "local_axis" is TRUE, then it will be relative to the object's
-// own local coordinates.
-set_velocity(vector new_velocity, integer local_axis)
-{
- vector current_velocity = llGetVel();
-
- if (local_axis) {
- rotation rot = llGetRot();
- current_velocity /= rot; // undo the rotation.
- }
-
- new_velocity -= current_velocity;
- new_velocity *= llGetMass();
-
- llApplyImpulse(new_velocity, local_axis);
-}
-
-// attempts to bring the object to a complete stop.
-full_stop()
-{
- llSetForce(<0,0,0>, FALSE);
- set_velocity(<0,0,0>, FALSE);
-}
-
-default {
- state_entry() { if (llSubStringIndex(llGetObjectName(), "huffotronic") < 0) state real_default; }
- on_rez(integer parm) { state rerun; }
-}
-state rerun { state_entry() { state default; } }
-
-state real_default
-{
- state_entry() { initialize(); }
-
- on_rez(integer param) { llResetScript(); }
-
- sensor(integer num_detected)
- {
- // save where we saw the av just now.
- last_detected_position = llDetectedPos(0);
- // move closer if we're not near enough to our beloved owner.
- move_toward_target(llGetOwner(), last_detected_position);
- // if we find that our rotation is incorrect, we'll fix that here.
- // we only reorient on the sensor period, since that's slower
- // than hitting our target. plus we try to ensure we never get
- // out of place again.
- vector curr_rot = llRot2Euler(llGetRot());
- if ( (curr_rot.x != 0.0 ) || (curr_rot.y != 0.0) ) {
- // we are out of rotational goodness right now even. fix that.
- llSetStatus(STATUS_PHYSICS, FALSE);
- llSetStatus(STATUS_ROTATE_X, FALSE);
- llSetStatus(STATUS_ROTATE_Y, FALSE);
- // save the z value before correcting the rotation.
- vector new_rot = ZERO_VECTOR;
- new_rot.z = curr_rot.z;
- llSetRot(llEuler2Rot(new_rot));
- llSetStatus(STATUS_PHYSICS, last_physics_state);
- }
- }
-
- no_sensor()
- {
- // we lost track of the avatar. turn off phyics and wait.
- cease_movement();
- }
-
- at_target(integer number, vector targetpos, vector ourpos)
- {
- // wait until we see the av again before picking a new target.
-///??seems bad cease_movement();
- }
-
- not_at_target()
- {
- }
-}
projects / feisty_meow.git / blobdiff