public static void SV_UserFriction()
{
float speed = Mathlib.LengthXY(ref sv_player.v.velocity);
if (speed == 0)
{
return;
}
// if the leading edge is over a dropoff, increase friction
Vector3 start, stop;
start.X = stop.X = sv_player.v.origin.x + sv_player.v.velocity.x / speed * 16;
start.Y = stop.Y = sv_player.v.origin.y + sv_player.v.velocity.y / speed * 16;
start.Z = sv_player.v.origin.z + sv_player.v.mins.z;
stop.Z = start.Z - 34;
trace_t trace = SV_Move(ref start, ref q_shared.ZeroVector, ref q_shared.ZeroVector, ref stop, 1, sv_player);
float friction = sv_friction.value;
if (trace.fraction == 1.0)
{
friction *= edgefriction.value;
}
// apply friction
float control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
float newspeed = (float)(speed - host_framtime * control * friction);
if (newspeed < 0)
{
newspeed = 0;
}
newspeed /= speed;
Mathlib.VectorScale(ref sv_player.v.velocity, newspeed, out sv_player.v.velocity);
}
static void PF_aim()
{
edict_t ent = G_EDICT(q_shared.OFS_PARM0);
float speed = G_FLOAT(q_shared.OFS_PARM1);
Vector3 start = ToVector(ref ent.v.origin);
start.Z += 20;
// try sending a trace straight
Vector3 dir;
Mathlib.Copy(ref pr_global_struct.v_forward, out dir);
Vector3 end = start + dir * 2048;
trace_t tr = SV_Move(ref start, ref q_shared.ZeroVector, ref q_shared.ZeroVector, ref end, 0, ent);
if (tr.ent != null && tr.ent.v.takedamage == q_shared.DAMAGE_AIM &&
(teamplay.value == 0 || ent.v.team <= 0 || ent.v.team != tr.ent.v.team))
{
G_VECTOR(ref pr_global_struct.v_forward);
return;
}
// try all possible entities
Vector3 bestdir = dir;
float bestdist = sv_aim.value;
edict_t bestent = null;
for (int i = 1; i < sv.num_edicts; i++)
{
edict_t check = sv.edicts[i];
if (check.v.takedamage != q_shared.DAMAGE_AIM)
{
continue;
}
if (check == ent)
{
continue;
}
if (teamplay.value != 0 && ent.v.team > 0 && ent.v.team == check.v.team)
{
continue; // don't aim at teammate
}
v3f tmp;
Mathlib.VectorAdd(ref check.v.mins, ref check.v.maxs, out tmp);
Mathlib.VectorMA(ref check.v.origin, 0.5f, ref tmp, out tmp);
Mathlib.Copy(ref tmp, out end);
dir = end - start;
Mathlib.Normalize(ref dir);
float dist = Vector3.Dot(dir, ToVector(ref pr_global_struct.v_forward));
if (dist < bestdist)
{
continue; // to far to turn
}
tr = SV_Move(ref start, ref q_shared.ZeroVector, ref q_shared.ZeroVector, ref end, 0, ent);
if (tr.ent == check)
{ // can shoot at this one
bestdist = dist;
bestent = check;
}
}
if (bestent != null)
{
v3f dir2, end2;
Mathlib.VectorSubtract(ref bestent.v.origin, ref ent.v.origin, out dir2);
float dist = Mathlib.DotProduct(ref dir2, ref pr_global_struct.v_forward);
Mathlib.VectorScale(ref pr_global_struct.v_forward, dist, out end2);
end2.z = dir2.z;
Mathlib.Normalize(ref end2);
G_VECTOR(ref end2);
}
else
{
G_VECTOR(ref bestdir);
}
}
public static void SV_PushMove(edict_t pusher, float movetime)
{
if (pusher.v.velocity.IsEmpty)
{
pusher.v.ltime += movetime;
return;
}
v3f move, mins, maxs;
Mathlib.VectorScale(ref pusher.v.velocity, movetime, out move);
Mathlib.VectorAdd(ref pusher.v.absmin, ref move, out mins);
Mathlib.VectorAdd(ref pusher.v.absmax, ref move, out maxs);
v3f pushorig = pusher.v.origin;
edict_t[] moved_edict = new edict_t[q_shared.MAX_EDICTS];
v3f[] moved_from = new v3f[q_shared.MAX_EDICTS];
// move the pusher to it's final position
Mathlib.VectorAdd(ref pusher.v.origin, ref move, out pusher.v.origin);
pusher.v.ltime += movetime;
SV_LinkEdict(pusher, false);
// see if any solid entities are inside the final position
int num_moved = 0;
for (int e = 1; e < sv.num_edicts; e++)
{
edict_t check = sv.edicts[e];
if (check.free)
{
continue;
}
if (check.v.movetype == q_shared.MOVETYPE_PUSH ||
check.v.movetype == q_shared.MOVETYPE_NONE ||
check.v.movetype == q_shared.MOVETYPE_NOCLIP)
{
continue;
}
// if the entity is standing on the pusher, it will definately be moved
if (!(((int)check.v.flags & q_shared.FL_ONGROUND) != 0 && PROG_TO_EDICT(check.v.groundentity) == pusher))
{
if (check.v.absmin.x >= maxs.x || check.v.absmin.y >= maxs.y ||
check.v.absmin.z >= maxs.z || check.v.absmax.x <= mins.x ||
check.v.absmax.y <= mins.y || check.v.absmax.z <= mins.z)
{
continue;
}
// see if the ent's bbox is inside the pusher's final position
if (SV_TestEntityPosition(check) == null)
{
continue;
}
}
// remove the onground flag for non-players
if (check.v.movetype != q_shared.MOVETYPE_WALK)
{
check.v.flags = (int)check.v.flags & ~q_shared.FL_ONGROUND;
}
v3f entorig = check.v.origin;
moved_from[num_moved] = entorig;
moved_edict[num_moved] = check;
num_moved++;
// try moving the contacted entity
pusher.v.solid = q_shared.SOLID_NOT;
PushEntity(check, ref move);
pusher.v.solid = q_shared.SOLID_BSP;
// if it is still inside the pusher, block
edict_t block = SV_TestEntityPosition(check);
if (block != null)
{
// fail the move
if (check.v.mins.x == check.v.maxs.x)
{
continue;
}
if (check.v.solid == q_shared.SOLID_NOT || check.v.solid == q_shared.SOLID_TRIGGER)
{
// corpse
check.v.mins.x = check.v.mins.y = 0;
check.v.maxs = check.v.mins;
continue;
}
check.v.origin = entorig;
SV_LinkEdict(check, true);
pusher.v.origin = pushorig;
SV_LinkEdict(pusher, false);
pusher.v.ltime -= movetime;
// if the pusher has a "blocked" function, call it
// otherwise, just stay in place until the obstacle is gone
if (pusher.v.blocked != 0)
{
pr_global_struct.self = EDICT_TO_PROG(pusher);
pr_global_struct.other = EDICT_TO_PROG(check);
PR_ExecuteProgram(pusher.v.blocked);
}
// move back any entities we already moved
for (int i = 0; i < num_moved; i++)
{
moved_edict[i].v.origin = moved_from[i];
SV_LinkEdict(moved_edict[i], false);
}
return;
}
}
}
public static void SV_Physics_Toss(edict_t ent)
{
// regular thinking
if (!SV_RunThink(ent))
{
return;
}
// if onground, return without moving
if (((int)ent.v.flags & q_shared.FL_ONGROUND) != 0)
{
return;
}
SV_CheckVelocity(ent);
// add gravity
if (ent.v.movetype != q_shared.MOVETYPE_FLY && ent.v.movetype != q_shared.MOVETYPE_FLYMISSILE)
{
SV_AddGravity(ent);
}
// move angles
Mathlib.VectorMA(ref ent.v.angles, (float)host_framtime, ref ent.v.avelocity, out ent.v.angles);
// move origin
v3f move;
Mathlib.VectorScale(ref ent.v.velocity, (float)host_framtime, out move);
trace_t trace = PushEntity(ent, ref move);
if (trace.fraction == 1)
{
return;
}
if (ent.free)
{
return;
}
float backoff;
if (ent.v.movetype == q_shared.MOVETYPE_BOUNCE)
{
backoff = 1.5f;
}
else
{
backoff = 1;
}
ClipVelocity(ref ent.v.velocity, ref trace.plane.normal, out ent.v.velocity, backoff);
// stop if on ground
if (trace.plane.normal.Z > 0.7f)
{
if (ent.v.velocity.z < 60 || ent.v.movetype != q_shared.MOVETYPE_BOUNCE)
{
ent.v.flags = (int)ent.v.flags | q_shared.FL_ONGROUND;
ent.v.groundentity = EDICT_TO_PROG(trace.ent);
ent.v.velocity = default(v3f);
ent.v.avelocity = default(v3f);
}
}
// check for in water
SV_CheckWaterTransition(ent);
}
public static int SV_FlyMove(edict_t ent, float time, trace_t steptrace)
{
v3f original_velocity = ent.v.velocity;
v3f primal_velocity = ent.v.velocity;
int numbumps = 4;
int blocked = 0;
Vector3[] planes = new Vector3[q_shared.MAX_CLIP_PLANES];
int numplanes = 0;
float time_left = time;
for (int bumpcount = 0; bumpcount < numbumps; bumpcount++)
{
if (ent.v.velocity.IsEmpty)
{
break;
}
v3f end;
Mathlib.VectorMA(ref ent.v.origin, time_left, ref ent.v.velocity, out end);
trace_t trace = Move(ref ent.v.origin, ref ent.v.mins, ref ent.v.maxs, ref end, 0, ent);
if (trace.allsolid)
{ // entity is trapped in another solid
ent.v.velocity = default(v3f);
return(3);
}
if (trace.fraction > 0)
{ // actually covered some distance
Mathlib.Copy(ref trace.endpos, out ent.v.origin);
original_velocity = ent.v.velocity;
numplanes = 0;
}
if (trace.fraction == 1)
{
break; // moved the entire distance
}
if (trace.ent == null)
{
Sys_Error("SV_FlyMove: !trace.ent");
}
if (trace.plane.normal.Z > 0.7)
{
blocked |= 1; // floor
if (trace.ent.v.solid == q_shared.SOLID_BSP)
{
ent.v.flags = (int)ent.v.flags | q_shared.FL_ONGROUND;
ent.v.groundentity = EDICT_TO_PROG(trace.ent);
}
}
if (trace.plane.normal.Z == 0)
{
blocked |= 2; // step
if (steptrace != null)
{
steptrace.CopyFrom(trace); // save for player extrafriction
}
}
//
// run the impact function
//
SV_Impact(ent, trace.ent);
if (ent.free)
{
break; // removed by the impact function
}
time_left -= time_left * trace.fraction;
// cliped to another plane
if (numplanes >= q_shared.MAX_CLIP_PLANES)
{
// this shouldn't really happen
ent.v.velocity = default(v3f);
return(3);
}
planes[numplanes] = trace.plane.normal;
numplanes++;
//
// modify original_velocity so it parallels all of the clip planes
//
v3f new_velocity = default(v3f);
int i, j;
for (i = 0; i < numplanes; i++)
{
ClipVelocity(ref original_velocity, ref planes[i], out new_velocity, 1);
for (j = 0; j < numplanes; j++)
{
if (j != i)
{
float dot = new_velocity.x * planes[j].X + new_velocity.y * planes[j].Y + new_velocity.z * planes[j].Z;
if (dot < 0)
{
break; // not ok
}
}
}
if (j == numplanes)
{
break;
}
}
if (i != numplanes)
{
// go along this plane
ent.v.velocity = new_velocity;
}
else
{
// go along the crease
if (numplanes != 2)
{
ent.v.velocity = default(v3f);
return(7);
}
Vector3 dir = Vector3.Cross(planes[0], planes[1]);
float d = dir.X * ent.v.velocity.x + dir.Y * ent.v.velocity.y + dir.Z * ent.v.velocity.z;
Mathlib.Copy(ref dir, out ent.v.velocity);
Mathlib.VectorScale(ref ent.v.velocity, d, out ent.v.velocity);
}
//
// if original velocity is against the original velocity, stop dead
// to avoid tiny occilations in sloping corners
//
if (Mathlib.DotProduct(ref ent.v.velocity, ref primal_velocity) <= 0)
{
ent.v.velocity = default(v3f);
return(blocked);
}
}
return(blocked);
}
public static void SV_WaterMove()
{
//
// user intentions
//
Vector3 pangle = ToVector(ref sv_player.v.v_angle);
Mathlib.AngleVectors(ref pangle, out forward, out right, out up);
Vector3 wishvel = forward * cmd.forwardmove + right * cmd.sidemove;
if (cmd.forwardmove == 0 && cmd.sidemove == 0 && cmd.upmove == 0)
{
wishvel.Z -= 60; // drift towards bottom
}
else
{
wishvel.Z += cmd.upmove;
}
float wishspeed = wishvel.Length;
if (wishspeed > sv_maxspeed.value)
{
wishvel *= sv_maxspeed.value / wishspeed;
wishspeed = sv_maxspeed.value;
}
wishspeed *= 0.7f;
//
// water friction
//
float newspeed, speed = Mathlib.Length(ref sv_player.v.velocity);
if (speed != 0)
{
newspeed = (float)(speed - host_framtime * speed * sv_friction.value);
if (newspeed < 0)
{
newspeed = 0;
}
Mathlib.VectorScale(ref sv_player.v.velocity, newspeed / speed, out sv_player.v.velocity);
}
else
{
newspeed = 0;
}
//
// water acceleration
//
if (wishspeed == 0)
{
return;
}
float addspeed = wishspeed - newspeed;
if (addspeed <= 0)
{
return;
}
Mathlib.Normalize(ref wishvel);
float accelspeed = (float)(sv_accelerate.value * wishspeed * host_framtime);
if (accelspeed > addspeed)
{
accelspeed = addspeed;
}
wishvel *= accelspeed;
sv_player.v.velocity.x += wishvel.X;
sv_player.v.velocity.y += wishvel.Y;
sv_player.v.velocity.z += wishvel.Z;
}