/*
* =============
* PF_aim
*
* Pick a vector for the player to shoot along
* vector aim(entity, missilespeed)
* =============
*/
static void PF_aim()
{
edict_t ent = GetEdict(OFS.OFS_PARM0);
float speed = GetFloat(OFS.OFS_PARM1);
Vector3 start = Common.ToVector(ref ent.v.origin);
start.Z += 20;
// try sending a trace straight
Vector3 dir;
Mathlib.Copy(ref Progs.GlobalStruct.v_forward, out dir);
Vector3 end = start + dir * 2048;
trace_t tr = Server.Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref end, 0, ent);
if (tr.ent != null && tr.ent.v.takedamage == Damages.DAMAGE_AIM &&
(Host.TeamPlay == 0 || ent.v.team <= 0 || ent.v.team != tr.ent.v.team))
{
ReturnVector(ref Progs.GlobalStruct.v_forward);
return;
}
// try all possible entities
Vector3 bestdir = dir;
float bestdist = Server.Aim;
edict_t bestent = null;
for (int i = 1; i < Server.sv.num_edicts; i++)
{
edict_t check = Server.sv.edicts[i];
if (check.v.takedamage != Damages.DAMAGE_AIM)
{
continue;
}
if (check == ent)
{
continue;
}
if (Host.TeamPlay != 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, Common.ToVector(ref Progs.GlobalStruct.v_forward));
if (dist < bestdist)
{
continue; // to far to turn
}
tr = Server.Move(ref start, ref Common.ZeroVector, ref Common.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 Progs.GlobalStruct.v_forward);
Mathlib.VectorScale(ref Progs.GlobalStruct.v_forward, dist, out end2);
end2.z = dir2.z;
Mathlib.Normalize(ref end2);
ReturnVector(ref end2);
}
else
{
ReturnVector(ref bestdir);
}
}
/// <summary>
/// SV_FlyMove
/// The basic solid body movement clip that slides along multiple planes
/// Returns the clipflags if the velocity was modified (hit something solid)
/// 1 = floor
/// 2 = wall / step
/// 4 = dead stop
/// If steptrace is not NULL, the trace of any vertical wall hit will be stored
/// </summary>
static int 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[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 == Solids.SOLID_BSP)
{
ent.v.flags = (int)ent.v.flags | EdictFlags.FL_ONGROUND;
ent.v.groundentity = EdictToProg(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
//
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 >= 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);
}
/// <summary>
/// BuildSurfaceDisplayList
/// </summary>
static void BuildSurfaceDisplayList(msurface_t fa)
{
// reconstruct the polygon
medge_t[] pedges = _CurrentModel.edges;
int lnumverts = fa.numedges;
//
// draw texture
//
glpoly_t poly = new glpoly_t();
poly.AllocVerts(lnumverts);
poly.next = fa.polys;
poly.flags = fa.flags;
fa.polys = poly;
ushort[] r_pedge_v;
Vector3 vec;
for (int i = 0; i < lnumverts; i++)
{
int lindex = _CurrentModel.surfedges[fa.firstedge + i];
if (lindex > 0)
{
r_pedge_v = pedges[lindex].v;
vec = _CurrentVertBase[r_pedge_v[0]].position;
}
else
{
r_pedge_v = pedges[-lindex].v;
vec = _CurrentVertBase[r_pedge_v[1]].position;
}
float s = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[0]) + fa.texinfo.vecs[0].W;
s /= fa.texinfo.texture.width;
float t = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[1]) + fa.texinfo.vecs[1].W;
t /= fa.texinfo.texture.height;
poly.verts[i][0] = vec.X;
poly.verts[i][1] = vec.Y;
poly.verts[i][2] = vec.Z;
poly.verts[i][3] = s;
poly.verts[i][4] = t;
//
// lightmap texture coordinates
//
s = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[0]) + fa.texinfo.vecs[0].W;
s -= fa.texturemins[0];
s += fa.light_s * 16;
s += 8;
s /= BLOCK_WIDTH * 16;
t = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[1]) + fa.texinfo.vecs[1].W;
t -= fa.texturemins[1];
t += fa.light_t * 16;
t += 8;
t /= BLOCK_HEIGHT * 16;
poly.verts[i][5] = s;
poly.verts[i][6] = t;
}
//
// remove co-linear points - Ed
//
if (_glKeepTJunctions.Value == 0 && (fa.flags & Surf.SURF_UNDERWATER) == 0)
{
for (int i = 0; i < lnumverts; ++i)
{
if (IsCollinear(poly.verts[(i + lnumverts - 1) % lnumverts],
poly.verts[i],
poly.verts[(i + 1) % lnumverts]))
{
int j;
for (j = i + 1; j < lnumverts; ++j)
{
//int k;
for (int k = 0; k < Mod.VERTEXSIZE; ++k)
{
poly.verts[j - 1][k] = poly.verts[j][k];
}
}
--lnumverts;
++_ColinElim;
// retry next vertex next time, which is now current vertex
--i;
}
}
}
poly.numverts = lnumverts;
}