/**
Uniform push from a point
**/
-#define steerlib_push(ent,point) normalize(ent.origin - point)
+#define steerlib_push(ent,point) normalize((ent).origin - point)
/*
vector steerlib_push(entity this, vector point)
{
**/
vector steerlib_arrive(entity this, vector point, float maximal_distance)
{
- float distance = bound(0.001,vlen(this.origin - point),maximal_distance);
+ float distance = bound(0.001, vlen(this.origin - point), maximal_distance);
vector direction = normalize(point - this.origin);
return direction * (distance / maximal_distance);
}
**/
vector steerlib_attract(entity this, vector point, float maximal_distance)
{
- float distance = bound(0.001,vlen(this.origin - point),maximal_distance);
+ float distance = bound(0.001, vlen(this.origin - point), maximal_distance);
vector direction = normalize(point - this.origin);
- return direction * (1-(distance / maximal_distance));
+ return direction * (1 - (distance / maximal_distance));
}
-vector steerlib_attract2(entity this, vector point, float min_influense,float max_distance,float max_influense)
+vector steerlib_attract2(entity this, vector point, float min_influense, float max_distance, float max_influense)
{
- float distance = bound(0.00001,vlen(this.origin - point),max_distance);
+ float distance = bound(0.00001, vlen(this.origin - point), max_distance);
vector direction = normalize(point - this.origin);
float influense = 1 - (distance / max_distance);
influense = min_influense + (influense * (max_influense - min_influense));
- return direction * influense;
+ return direction * influense;
}
/*
/**
Move away from a point.
**/
-vector steerlib_repell(entity this, vector point,float maximal_distance)
+vector steerlib_repel(entity this, vector point, float maximal_distance)
{
- float distance;
- vector direction;
-
- distance = bound(0.001,vlen(this.origin - point),maximal_distance);
- direction = normalize(this.origin - point);
+ float distance = bound(0.001, vlen(this.origin - point), maximal_distance);
+ vector direction = normalize(this.origin - point);
- return direction * (1-(distance / maximal_distance));
+ return direction * (1 - (distance / maximal_distance));
}
/**
Try to keep at ideal_distance away from point
**/
-vector steerlib_standoff(entity this, vector point,float ideal_distance)
+vector steerlib_standoff(entity this, vector point, float ideal_distance)
{
- float distance;
vector direction;
-
- distance = vlen(this.origin - point);
-
+ float distance = vlen(this.origin - point);
if(distance < ideal_distance)
{
}
/**
- A random heading in a forward halfcicrle
+ A random heading in a forward semicircle
- use like:
- this.target = steerlib_wander(256,32,this.target)
+ usage:
+ this.target = steerlib_wander(256, 32, this.target)
- where range is the cicrle radius and tresh is how close we need to be to pick a new heading.
+ where range is the circle radius and threshold is how close we need to be to pick a new heading.
+ Assumes v_forward is set by makevectors
**/
-vector steerlib_wander(entity this, float range, float tresh, vector oldpoint)
+vector steerlib_wander(entity this, float range, float threshold, vector oldpoint)
{
- vector wander_point;
- wander_point = v_forward - oldpoint;
+ vector wander_point = v_forward - oldpoint;
- if (vdist(wander_point, >, tresh))
+ if (vdist(wander_point, >, threshold))
return oldpoint;
- range = bound(0,range,1);
+ range = bound(0, range, 1);
wander_point = this.origin + v_forward * 128;
wander_point = wander_point + randomvec() * (range * 128) - randomvec() * (range * 128);
}
/**
- Dodge a point. dont work to well.
+ Dodge a point NOTE: doesn't work well
**/
vector steerlib_dodge(entity this, vector point, vector dodge_dir, float min_distance)
{
- float distance;
-
- distance = max(vlen(this.origin - point),min_distance);
+ float distance = max(vlen(this.origin - point), min_distance);
if (min_distance < distance)
return '0 0 0';
- return dodge_dir * (min_distance/distance);
+ return dodge_dir * (min_distance / distance);
}
/**
Group will move towards the unified direction while keeping close to eachother.
**/
.float flock_id;
-vector steerlib_flock(entity this, float _radius, float standoff,float separation_force,float flock_force)
+vector steerlib_flock(entity this, float _radius, float standoff, float separation_force, float flock_force)
{
- entity flock_member;
vector push = '0 0 0', pull = '0 0 0';
- float ccount = 0;
+ int ccount = 0;
- flock_member = findradius(this.origin, _radius);
+ entity flock_member = findradius(this.origin, _radius);
while(flock_member)
{
if(flock_member != this)
if(flock_member.flock_id == this.flock_id)
{
++ccount;
- push = push + (steerlib_repell(this, flock_member.origin,standoff) * separation_force);
+ push = push + (steerlib_repel(this, flock_member.origin,standoff) * separation_force);
pull = pull + (steerlib_arrive(this, flock_member.origin + flock_member.velocity, _radius) * flock_force);
}
flock_member = flock_member.chain;
Group will move towards the unified direction while keeping close to eachother.
xy only version (for ground movers).
**/
-vector steerlib_flock2d(entity this, float _radius, float standoff,float separation_force,float flock_force)
+vector steerlib_flock2d(entity this, float _radius, float standoff, float separation_force, float flock_force)
{
- entity flock_member;
vector push = '0 0 0', pull = '0 0 0';
- float ccount = 0;
+ int ccount = 0;
- flock_member = findradius(this.origin,_radius);
+ entity flock_member = findradius(this.origin,_radius);
while(flock_member)
{
if(flock_member != this)
if(flock_member.flock_id == this.flock_id)
{
++ccount;
- push = push + (steerlib_repell(this, flock_member.origin, standoff) * separation_force);
+ push = push + (steerlib_repel(this, flock_member.origin, standoff) * separation_force);
pull = pull + (steerlib_arrive(this, flock_member.origin + flock_member.velocity, _radius) * flock_force);
}
flock_member = flock_member.chain;
/**
All members want to be in the center, and keep away from eachother.
- The furtehr form the center the more they want to be there.
+ The further from the center the more they want to be there.
This results in a aligned movement (?!) much like flocking.
**/
-vector steerlib_swarm(entity this, float _radius, float standoff,float separation_force,float swarm_force)
+vector steerlib_swarm(entity this, float _radius, float standoff, float separation_force, float swarm_force)
{
- entity swarm_member;
vector force = '0 0 0', center = '0 0 0';
- float ccount = 0;
-
- swarm_member = findradius(this.origin,_radius);
+ int ccount = 0;
+ entity swarm_member = findradius(this.origin,_radius);
while(swarm_member)
{
if(swarm_member.flock_id == this.flock_id)
{
++ccount;
center = center + swarm_member.origin;
- force = force + (steerlib_repell(this, swarm_member.origin,standoff) * separation_force);
+ force = force + (steerlib_repel(this, swarm_member.origin,standoff) * separation_force);
}
swarm_member = swarm_member.chain;
}
Run four tracelines in a forward funnel, bias each diretion negative if something is found there.
You need to call makevectors() (or equivalent) before this function to set v_forward and v_right
**/
-vector steerlib_traceavoid(entity this, float pitch,float length)
+vector steerlib_traceavoid(entity this, float pitch, float length)
{
- vector vup_left,vup_right,vdown_left,vdown_right;
- float fup_left,fup_right,fdown_left,fdown_right;
- vector upwish,downwish,leftwish,rightwish;
- vector v_left,v_down;
-
+ vector v_left = v_right * -1;
+ vector v_down = v_up * -1;
- v_left = v_right * -1;
- v_down = v_up * -1;
-
- vup_left = (v_forward + (v_left * pitch + v_up * pitch)) * length;
- traceline(this.origin, this.origin + vup_left,MOVE_NOMONSTERS,this);
- fup_left = trace_fraction;
+ vector vup_left = (v_forward + (v_left * pitch + v_up * pitch)) * length;
+ traceline(this.origin, this.origin + vup_left, MOVE_NOMONSTERS, this);
+ float fup_left = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- vup_right = (v_forward + (v_right * pitch + v_up * pitch)) * length;
- traceline(this.origin,this.origin + vup_right ,MOVE_NOMONSTERS,this);
- fup_right = trace_fraction;
+ vector vup_right = (v_forward + (v_right * pitch + v_up * pitch)) * length;
+ traceline(this.origin, this.origin + vup_right, MOVE_NOMONSTERS, this);
+ float fup_right = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- vdown_left = (v_forward + (v_left * pitch + v_down * pitch)) * length;
- traceline(this.origin,this.origin + vdown_left,MOVE_NOMONSTERS,this);
- fdown_left = trace_fraction;
+ vector vdown_left = (v_forward + (v_left * pitch + v_down * pitch)) * length;
+ traceline(this.origin, this.origin + vdown_left, MOVE_NOMONSTERS, this);
+ float fdown_left = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- vdown_right = (v_forward + (v_right * pitch + v_down * pitch)) * length;
- traceline(this.origin,this.origin + vdown_right,MOVE_NOMONSTERS,this);
- fdown_right = trace_fraction;
+ vector vdown_right = (v_forward + (v_right * pitch + v_down * pitch)) * length;
+ traceline(this.origin, this.origin + vdown_right, MOVE_NOMONSTERS, this);
+ float fdown_right = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- upwish = v_up * (fup_left + fup_right);
- downwish = v_down * (fdown_left + fdown_right);
- leftwish = v_left * (fup_left + fdown_left);
- rightwish = v_right * (fup_right + fdown_right);
+ vector upwish = v_up * (fup_left + fup_right);
+ vector downwish = v_down * (fdown_left + fdown_right);
+ vector leftwish = v_left * (fup_left + fdown_left);
+ vector rightwish = v_right * (fup_right + fdown_right);
- return (upwish+leftwish+downwish+rightwish) * 0.25;
+ return (upwish + leftwish + downwish + rightwish) * 0.25;
}
/**
Steer towards the direction least obstructed.
Run tracelines in a forward trident, bias each direction negative if something is found there.
+ You need to call makevectors() (or equivalent) before this function to set v_forward and v_right
**/
vector steerlib_traceavoid_flat(entity this, float pitch, float length, vector vofs)
{
- vector vt_left, vt_right,vt_front;
- float f_left, f_right,f_front;
- vector leftwish, rightwish,frontwish, v_left;
+ vector v_left = v_right * -1;
- v_left = v_right * -1;
-
-
- vt_front = v_forward * length;
+ vector vt_front = v_forward * length;
traceline(this.origin + vofs, this.origin + vofs + vt_front,MOVE_NOMONSTERS,this);
- f_front = trace_fraction;
+ float f_front = trace_fraction;
- vt_left = (v_forward + (v_left * pitch)) * length;
+ vector vt_left = (v_forward + (v_left * pitch)) * length;
traceline(this.origin + vofs, this.origin + vofs + vt_left,MOVE_NOMONSTERS,this);
- f_left = trace_fraction;
+ float f_left = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- vt_right = (v_forward + (v_right * pitch)) * length;
+ vector vt_right = (v_forward + (v_right * pitch)) * length;
traceline(this.origin + vofs, this.origin + vofs + vt_right ,MOVE_NOMONSTERS,this);
- f_right = trace_fraction;
+ float f_right = trace_fraction;
//te_lightning1(NULL,this.origin, trace_endpos);
- leftwish = v_left * f_left;
- rightwish = v_right * f_right;
- frontwish = v_forward * f_front;
+ vector leftwish = v_left * f_left;
+ vector rightwish = v_right * f_right;
+ vector frontwish = v_forward * f_front;
return normalize(leftwish + rightwish + frontwish);
}
//#define BEAMSTEER_VISUAL
-float beamsweep(entity this, vector from, vector dir,float length, float step,float step_up, float step_down)
+float beamsweep(entity this, vector from, vector dir, float length, float step, float step_up, float step_down)
{
- float i;
- vector a, b, u, d;
-
- u = '0 0 1' * step_up;
- d = '0 0 1' * step_down;
+ vector u = '0 0 1' * step_up;
+ vector d = '0 0 1' * step_down;
traceline(from + u, from - d,MOVE_NORMAL,this);
if(trace_fraction == 1.0)
if(!location_isok(trace_endpos, false, false))
return 0;
- a = trace_endpos;
- for(i = 0; i < length; i += step)
+ vector a = trace_endpos;
+ for(int i = 0; i < length; i += step)
{
- b = a + dir * step;
+ vector b = a + dir * step;
tracebox(a + u,'-4 -4 -4','4 4 4', b + u,MOVE_NORMAL,this);
if(trace_fraction != 1.0)
return i / length;
vector steerlib_beamsteer(entity this, vector dir, float length, float step, float step_up, float step_down)
{
- float bm_forward, bm_right, bm_left,p;
- vector vr,vl;
-
dir.z *= 0.15;
- vr = vectoangles(dir);
- //vr_x *= -1;
+ vector vr = vectoangles(dir);
+ //vr.x *= -1;
tracebox(this.origin + '0 0 1' * step_up, this.mins, this.maxs, ('0 0 1' * step_up) + this.origin + (dir * length), MOVE_NOMONSTERS, this);
if(trace_fraction == 1.0)
{
- //te_lightning1(this,this.origin,this.origin + (dir * length));
+ //te_lightning1(this,this.origin,this.origin + (dir * length));
return dir;
}
makevectors(vr);
- bm_forward = beamsweep(this, this.origin, v_forward, length, step, step_up, step_down);
+ float bm_forward = beamsweep(this, this.origin, v_forward, length, step, step_up, step_down);
vr = normalize(v_forward + v_right * 0.125);
- vl = normalize(v_forward - v_right * 0.125);
+ vector vl = normalize(v_forward - v_right * 0.125);
- bm_right = beamsweep(this, this.origin, vr, length, step, step_up, step_down);
- bm_left = beamsweep(this, this.origin, vl, length, step, step_up, step_down);
+ float bm_right = beamsweep(this, this.origin, vr, length, step, step_up, step_down);
+ float bm_left = beamsweep(this, this.origin, vl, length, step, step_up, step_down);
-
- p = bm_left + bm_right;
+ float p = bm_left + bm_right;
if(p == 2)
{
//te_lightning1(this,this.origin + '0 0 32',this.origin + '0 0 32' + vr * length);
vl = vl * bm_left;
return normalize(vr + vl);
-
}
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