/**
* Monsters freefall when they don't have a ground entity, otherwise all
* movement is done with discrete steps.
*
* This is also used for objects that have become still on the ground, but
* will fall if the floor is pulled out from under them. FIXME: is this
* true?
*/
public static void SV_Physics_Step(edict_t ent)
{
bool wasonground;
var hitsound = false;
float[] vel;
float speed, newspeed, control;
float friction;
edict_t groundentity;
int mask;
// airborn monsters should always check for ground
if (ent.groundentity == null)
{
M.M_CheckGround(ent);
}
groundentity = ent.groundentity;
SV.SV_CheckVelocity(ent);
if (groundentity != null)
{
wasonground = true;
}
else
{
wasonground = false;
}
if (ent.avelocity[0] != 0 || ent.avelocity[1] != 0 || ent.avelocity[2] != 0)
{
SV.SV_AddRotationalFriction(ent);
}
// add gravity except:
// flying monsters
// swimming monsters who are in the water
if (!wasonground)
{
if (0 == (ent.flags & Defines.FL_FLY))
{
if (!((ent.flags & Defines.FL_SWIM) != 0 && ent.waterlevel > 2))
{
if (ent.velocity[2] < GameBase.sv_gravity.value * -0.1)
{
hitsound = true;
}
if (ent.waterlevel == 0)
{
SV.SV_AddGravity(ent);
}
}
}
}
// friction for flying monsters that have been given vertical velocity
if ((ent.flags & Defines.FL_FLY) != 0 && ent.velocity[2] != 0)
{
speed = Math.Abs(ent.velocity[2]);
control = speed < Defines.sv_stopspeed ? Defines.sv_stopspeed : speed;
friction = Defines.sv_friction / 3;
newspeed = speed - Defines.FRAMETIME * control * friction;
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
ent.velocity[2] *= newspeed;
}
// friction for flying monsters that have been given vertical velocity
if ((ent.flags & Defines.FL_SWIM) != 0 && ent.velocity[2] != 0)
{
speed = Math.Abs(ent.velocity[2]);
control = speed < Defines.sv_stopspeed ? Defines.sv_stopspeed : speed;
newspeed = speed - Defines.FRAMETIME * control * Defines.sv_waterfriction * ent.waterlevel;
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
ent.velocity[2] *= newspeed;
}
if (ent.velocity[2] != 0 || ent.velocity[1] != 0 || ent.velocity[0] != 0)
{
// apply friction
// let dead monsters who aren't completely onground slide
if (wasonground || 0 != (ent.flags & (Defines.FL_SWIM | Defines.FL_FLY)))
{
if (!(ent.health <= 0.0 && !M.M_CheckBottom(ent)))
{
vel = ent.velocity;
speed = (float)Math.Sqrt(vel[0] * vel[0] + vel[1] * vel[1]);
if (speed != 0)
{
friction = Defines.sv_friction;
control = speed < Defines.sv_stopspeed ? Defines.sv_stopspeed : speed;
newspeed = speed - Defines.FRAMETIME * control * friction;
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
vel[0] *= newspeed;
vel[1] *= newspeed;
}
}
}
if ((ent.svflags & Defines.SVF_MONSTER) != 0)
{
mask = Defines.MASK_MONSTERSOLID;
}
else
{
mask = Defines.MASK_SOLID;
}
SV.SV_FlyMove(ent, Defines.FRAMETIME, mask);
GameBase.gi.linkentity(ent);
GameBase.G_TouchTriggers(ent);
if (!ent.inuse)
{
return;
}
if (ent.groundentity != null)
{
if (!wasonground)
{
if (hitsound)
{
GameBase.gi.sound(ent, 0, GameBase.gi.soundindex("world/land.wav"), 1, 1, 0);
}
}
}
}
// regular thinking
SV.SV_RunThink(ent);
}
/**
* Toss, bounce, and fly movement. When onground, do nothing.
*/
public static void SV_Physics_Toss(edict_t ent)
{
trace_t trace;
float[] move = { 0, 0, 0 };
float backoff;
edict_t slave;
bool wasinwater;
bool isinwater;
float[] old_origin = { 0, 0, 0 };
// regular thinking
SV.SV_RunThink(ent);
// if not a team captain, so movement will be handled elsewhere
if ((ent.flags & Defines.FL_TEAMSLAVE) != 0)
{
return;
}
if (ent.velocity[2] > 0)
{
ent.groundentity = null;
}
// check for the groundentity going away
if (ent.groundentity != null)
{
if (!ent.groundentity.inuse)
{
ent.groundentity = null;
}
}
// if onground, return without moving
if (ent.groundentity != null)
{
return;
}
Math3D.VectorCopy(ent.s.origin, old_origin);
SV.SV_CheckVelocity(ent);
// add gravity
if (ent.movetype != Defines.MOVETYPE_FLY && ent.movetype != Defines.MOVETYPE_FLYMISSILE)
{
SV.SV_AddGravity(ent);
}
// move angles
Math3D.VectorMA(ent.s.angles, Defines.FRAMETIME, ent.avelocity, ent.s.angles);
// move origin
Math3D.VectorScale(ent.velocity, Defines.FRAMETIME, move);
trace = SV.SV_PushEntity(ent, move);
if (!ent.inuse)
{
return;
}
if (trace.fraction < 1)
{
if (ent.movetype == Defines.MOVETYPE_BOUNCE)
{
backoff = 1.5f;
}
else
{
backoff = 1;
}
GameBase.ClipVelocity(ent.velocity, trace.plane.normal, ent.velocity, backoff);
// stop if on ground
if (trace.plane.normal[2] > 0.7)
{
if (ent.velocity[2] < 60 || ent.movetype != Defines.MOVETYPE_BOUNCE)
{
ent.groundentity = trace.ent;
ent.groundentity_linkcount = trace.ent.linkcount;
Math3D.VectorCopy(Globals.vec3_origin, ent.velocity);
Math3D.VectorCopy(Globals.vec3_origin, ent.avelocity);
}
}
// if (ent.touch)
// ent.touch (ent, trace.ent, &trace.plane, trace.surface);
}
// check for water transition
wasinwater = (ent.watertype & Defines.MASK_WATER) != 0;
ent.watertype = GameBase.gi.pointcontents(ent.s.origin);
isinwater = (ent.watertype & Defines.MASK_WATER) != 0;
if (isinwater)
{
ent.waterlevel = 1;
}
else
{
ent.waterlevel = 0;
}
if (!wasinwater && isinwater)
{
GameBase.gi.positioned_sound(old_origin, ent, Defines.CHAN_AUTO, GameBase.gi.soundindex("misc/h2ohit1.wav"), 1, 1, 0);
}
else if (wasinwater && !isinwater)
{
GameBase.gi.positioned_sound(ent.s.origin, ent, Defines.CHAN_AUTO, GameBase.gi.soundindex("misc/h2ohit1.wav"), 1, 1, 0);
}
// move teamslaves
for (slave = ent.teamchain; slave != null; slave = slave.teamchain)
{
Math3D.VectorCopy(ent.s.origin, slave.s.origin);
GameBase.gi.linkentity(slave);
}
}