ref: af7c9e9e4c647a9b155842cb98f25d0facd2bc95
dir: /qw-qc/subs.qc/
/*
subs.qc
sub-functions, mostly movement related
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
void() SUB_Null = {};
void() SUB_Remove = {remove(self);};
/*
QuakeEd only writes a single float for angles (bad idea), so up and down are
just constant angles.
*/
vector() SetMovedir =
{
if (self.angles == '0 -1 0')
self.movedir = '0 0 1';
else if (self.angles == '0 -2 0')
self.movedir = '0 0 -1';
else
{
makevectors (self.angles);
self.movedir = v_forward;
}
self.angles = '0 0 0';
};
/*
================
InitTrigger
================
*/
void() InitTrigger =
{
// trigger angles are used for one-way touches. An angle of 0 is assumed
// to mean no restrictions, so use a yaw of 360 instead.
if (self.angles != '0 0 0')
SetMovedir ();
self.solid = SOLID_TRIGGER;
setmodel (self, self.model); // set size and link into world
self.movetype = MOVETYPE_NONE;
self.modelindex = 0;
self.model = "";
};
/*
=============
SUB_CalcMove
calculate self.velocity and self.nextthink to reach dest from
self.origin traveling at speed
===============
*/
void(entity ent, vector tdest, float tspeed, void() func) SUB_CalcMoveEnt =
{
local entity stemp;
stemp = self;
self = ent;
SUB_CalcMove (tdest, tspeed, func);
self = stemp;
};
void(vector tdest, float tspeed, void() func) SUB_CalcMove =
{
local vector vdestdelta;
local float len, traveltime;
if (!tspeed)
objerror("No speed is defined!");
self.think1 = func;
self.finaldest = tdest;
self.think = SUB_CalcMoveDone;
if (tdest == self.origin)
{
self.velocity = '0 0 0';
self.nextthink = self.ltime + 0.1;
return;
}
// set destdelta to the vector needed to move
vdestdelta = tdest - self.origin;
// calculate length of vector
len = vlen (vdestdelta);
// divide by speed to get time to reach dest
traveltime = len / tspeed;
if (traveltime < 0.03)
traveltime = 0.03;
// set nextthink to trigger a think when dest is reached
self.nextthink = self.ltime + traveltime;
// scale the destdelta vector by the time spent traveling to get velocity
self.velocity = vdestdelta * (1/traveltime); // qcc won't take vec/float
};
/*
============
After moving, set origin to exact final destination
============
*/
void() SUB_CalcMoveDone =
{
setorigin(self, self.finaldest);
self.velocity = '0 0 0';
self.nextthink = -1;
if (self.think1)
self.think1();
};
/*
=============
SUB_CalcAngleMove
calculate self.avelocity and self.nextthink to reach destangle from
self.angles rotating
The calling function should make sure self.think is valid
===============
*/
void(entity ent, vector destangle, float tspeed, void() func) SUB_CalcAngleMoveEnt =
{
local entity stemp;
stemp = self;
self = ent;
SUB_CalcAngleMove (destangle, tspeed, func);
self = stemp;
};
void(vector destangle, float tspeed, void() func) SUB_CalcAngleMove =
{
local vector destdelta;
local float len, traveltime;
if (!tspeed)
objerror("No speed is defined!");
// set destdelta to the vector needed to move
destdelta = destangle - self.angles;
// calculate length of vector
len = vlen (destdelta);
// divide by speed to get time to reach dest
traveltime = len / tspeed;
// set nextthink to trigger a think when dest is reached
self.nextthink = self.ltime + traveltime;
// scale the destdelta vector by the time spent traveling to get velocity
self.avelocity = destdelta * (1 / traveltime);
self.think1 = func;
self.finalangle = destangle;
self.think = SUB_CalcAngleMoveDone;
};
/*
============
After rotating, set angle to exact final angle
============
*/
void() SUB_CalcAngleMoveDone =
{
self.angles = self.finalangle;
self.avelocity = '0 0 0';
self.nextthink = -1;
if (self.think1)
self.think1();
};
//=============================================================================
void() DelayThink =
{
activator = self.enemy;
SUB_UseTargets ();
remove(self);
};
/*
==============================
SUB_UseTargets
the global "activator" should be set to the entity that initiated the firing.
If self.delay is set, a DelayedUse entity will be created that will actually
do the SUB_UseTargets after that many seconds have passed.
Centerprints any self.message to the activator.
Removes all entities with a targetname that match self.killtarget,
and removes them, so some events can remove other triggers.
Search for (string)targetname in all entities that
match (string)self.target and call their .use function
==============================
*/
void() SUB_UseTargets =
{
local entity t, stemp, otemp, act;
//
// check for a delay
//
if (self.delay)
{
// create a temp object to fire at a later time
t = spawn();
t.classname = "DelayedUse";
t.nextthink = time + self.delay;
t.think = DelayThink;
t.enemy = activator;
t.message = self.message;
t.killtarget = self.killtarget;
t.target = self.target;
return;
}
//
// print the message
//
if (activator.classname == "player" && self.message != "")
{
centerprint (activator, self.message);
if (!self.noise)
sound (activator, CHAN_VOICE, "misc/talk.wav", 1, ATTN_NORM);
}
//
// kill the killtagets
//
if (self.killtarget)
{
t = world;
do
{
t = find (t, targetname, self.killtarget);
if (!t)
return;
remove (t);
} while ( 1 );
}
//
// fire targets
//
if (self.target)
{
act = activator;
t = world;
do
{
t = find (t, targetname, self.target);
if (!t)
{
return;
}
stemp = self;
otemp = other;
self = t;
other = stemp;
if (self.use != SUB_Null)
{
if (self.use)
self.use ();
}
self = stemp;
other = otemp;
activator = act;
} while ( 1 );
}
};