private int CalculateFirstInteraction(RectLRTB changebounds)
{
int framecount = _frames.Count;
for (int frame = 1; frame < framecount; frame++)
{
if (!changebounds.Intersects(_frames[frame].PhysicsBounds))
{
continue;
}
foreach (var change in _changedcells)
{
if (_frames[frame].PhysicsBounds.ContainsPoint(change))
{
if (CheckInteraction(frame))
{
return(frame);
}
// we dont have to check this rider more than once!
break;
}
}
}
return(-1);
}
private Rider(SimulationPoint[] body, SimulationPoint[] scarf, RectLRTB physbounds, bool dead, bool sledbroken)
{
Body = new ImmutablePointCollection(body);
Scarf = new ImmutablePointCollection(scarf);
Crashed = dead;
SledBroken = sledbroken;
PhysicsBounds = physbounds;
}
private Rider(SimulationPoint[] body, SimulationPoint[] scarf, RectLRTB physbounds, bool dead, bool sledbroken, bool useRemount, int rState = 0, int rTimer = 0)
{
Body = new ImmutablePointCollection(body);
Scarf = new ImmutablePointCollection(scarf);
Crashed = dead;
SledBroken = sledbroken;
PhysicsBounds = physbounds;
UseRemount = useRemount;
remountState = rState;
remountTimer = rTimer;
}
public List <int> Diagnose(
ISimulationGrid grid,
Bone[] bones,
int maxiteration = 6)
{
var ret = new List <int>();
if (Crashed)
{
return(ret);
}
Debug.Assert(maxiteration != 0, "Momentum tick can't die but attempted diagnose");
SimulationPoint[] body = Body.Step();
int bodylen = Body.Length;
bool dead = Crashed;
int rState = remountState;
RectLRTB phys = new RectLRTB(ref body[0]);
List <int> breaks = new List <int>();
using (grid.Sync.AcquireRead())
{
for (int i = 0; i < maxiteration; i++)
{
ProcessBones(bones, body, ref dead, ref rState, breaks);
if (dead)
{
return(breaks);
}
ProcessLines(grid, body, ref phys);
}
}
if (maxiteration == 6)
{
var nose = body[RiderConstants.SledTR].Location - body[RiderConstants.SledTL].Location;
var tail = body[RiderConstants.SledBL].Location - body[RiderConstants.SledTL].Location;
var head = body[RiderConstants.BodyShoulder].Location - body[RiderConstants.BodyButt].Location;
if ((nose.X * tail.Y) - (nose.Y * tail.X) < 0) // tail fakie
{
dead = true;
ret.Add(-1);
}
if ((nose.X * head.Y) - (nose.Y * head.X) > 0)// head fakie
{
dead = true;
ret.Add(-2);
}
}
return(ret);
}
public static Rider Create(Vector2d start, Vector2d momentum, bool useRemount)
{
var joints = new SimulationPoint[RiderConstants.DefaultRider.Length];
var scarf = new SimulationPoint[RiderConstants.DefaultScarf.Length + 1];
RectLRTB pbounds = new RectLRTB();
for (int i = 0; i < joints.Length; i++)
{
var coord = (RiderConstants.DefaultRider[i] + start);
var prev = coord - momentum;
switch (i)
{
case RiderConstants.SledTL:
case RiderConstants.BodyButt:
case RiderConstants.BodyShoulder:
joints[i] = new SimulationPoint(coord, prev, Vector2d.Zero, 0.8);
break;
case RiderConstants.BodyHandLeft:
case RiderConstants.BodyHandRight:
joints[i] = new SimulationPoint(coord, prev, Vector2d.Zero, 0.1);
break;
default:
joints[i] = new SimulationPoint(coord, prev, Vector2d.Zero, 0.0);
break;
}
if (i == 0)
{
pbounds = new RectLRTB(ref joints[0]);
}
else
{
var cellx = (int)Math.Floor(joints[i].Location.X / 14);
var celly = (int)Math.Floor(joints[i].Location.Y / 14);
pbounds.left = Math.Min(cellx - 1, pbounds.left);
pbounds.top = Math.Min(celly - 1, pbounds.top);
pbounds.right = Math.Max(cellx + 1, pbounds.right);
pbounds.bottom = Math.Max(celly + 1, pbounds.bottom);
}
}
scarf[0] = joints[RiderConstants.BodyShoulder];
for (int i = 0; i < RiderConstants.DefaultScarf.Length; i++)
{
var pos = scarf[0].Location + RiderConstants.DefaultScarf[i];
scarf[i + 1] = new SimulationPoint(pos, pos, Vector2d.Zero, 0.9);
}
return(new Rider(joints, scarf, pbounds, false, false, useRemount));
}
public Rider Simulate(
ISimulationGrid grid,
Bone[] bones,
ref int activetriggers,
LinkedList <int> collisions,
int maxiteration = 6,
bool stepscarf = true,
int frameid = 0)
{
SimulationPoint[] body = Body.Step();
int bodylen = Body.Length;
bool dead = Crashed;
bool sledbroken = SledBroken;
RectLRTB phys = new RectLRTB(ref body[0]);
using (grid.Sync.AcquireRead())
{
for (int i = 0; i < maxiteration; i++)
{
ProcessBones(bones, body, ref dead);
ProcessLines(grid, body, ref phys, ref activetriggers, collisions);
}
}
if (maxiteration == 6)
{
var nose = body[RiderConstants.SledTR].Location - body[RiderConstants.SledTL].Location;
var tail = body[RiderConstants.SledBL].Location - body[RiderConstants.SledTL].Location;
var head = body[RiderConstants.BodyShoulder].Location - body[RiderConstants.BodyButt].Location;
if ((nose.X * tail.Y) - (nose.Y * tail.X) < 0 || // tail fakie
(nose.X * head.Y) - (nose.Y * head.X) > 0) // head fakie
{
dead = true;
sledbroken = true;
}
}
SimulationPoint[] scarf;
if (stepscarf)
{
scarf = Scarf.Step(friction: true);
scarf[0] = body[RiderConstants.BodyShoulder];
FlutterScarf(scarf, frameid, Utility.LengthFast(scarf[0].Momentum));
ProcessScarfBones(RiderConstants.ScarfBones, scarf);
}
else
{
scarf = new SimulationPoint[Scarf.Length];
}
return(new Rider(body, scarf, phys, dead, sledbroken));
}
private unsafe static void ProcessLines(
ISimulationGrid grid,
SimulationPoint[] body,
ref RectLRTB physinfo,
ref int activetriggers,
LinkedList <int> collisions = null)
{
int bodylen = body.Length;
for (int i = 0; i < bodylen; i++)
{
var startpos = body[i].Location;
var cellx = (int)Math.Floor(startpos.X / 14);
var celly = (int)Math.Floor(startpos.Y / 14);
//every itreration is at least 3x3, so asjust the info for that
physinfo.left = Math.Min(cellx - 1, physinfo.left);
physinfo.top = Math.Min(celly - 1, physinfo.top);
physinfo.right = Math.Max(cellx + 1, physinfo.right);
physinfo.bottom = Math.Max(celly + 1, physinfo.bottom);
for (var x = -1; x <= 1; x++)
{
for (var y = -1; y <= 1; y++)
{
var cell = grid.GetCell(cellx + x, celly + y);
if (cell == null)
{
continue;
}
foreach (var line in cell)
{
if (line.Interact(ref body[i]))
{
collisions?.AddLast(line.ID);
if (line.Trigger != null)
{
if (activetriggers != line.ID)
{
activetriggers = line.ID;
}
}
}
}
}
}
}
}
private int FindUpdateStart()
{
if (_changedcells.Count == 0)
{
return(-1);
}
RectLRTB changebounds = new RectLRTB(_changedcells.First());
foreach (var cell in _changedcells)
{
changebounds.left = Math.Min(cell.X, changebounds.left);
changebounds.top = Math.Min(cell.Y, changebounds.top);
changebounds.right = Math.Max(cell.X, changebounds.right);
changebounds.bottom = Math.Max(cell.Y, changebounds.bottom);
}
return(CalculateFirstInteraction(changebounds));
}
public Rider Simulate(
ISimulationGrid grid,
Bone[] bones,
LinkedList <int> collisions,
int maxiteration = 6,
bool stepscarf = true,
int frameid = 0)
{
SimulationPoint[] body = Body.Step();
int bodylen = Body.Length;
bool dead = Crashed;
bool sledbroken = SledBroken;
int rState = remountState;
int rTimer = remountTimer;
RectLRTB phys = new RectLRTB(ref body[0]);
using (grid.Sync.AcquireRead())
{
for (int i = 0; i < maxiteration; i++)
{
ProcessBones(bones, body, ref dead, ref rState);
ProcessLines(grid, body, ref phys, collisions);
}
}
if (maxiteration == 6)
{
var nose = body[RiderConstants.SledTR].Location - body[RiderConstants.SledTL].Location;
var tail = body[RiderConstants.SledBL].Location - body[RiderConstants.SledTL].Location;
var head = body[RiderConstants.BodyShoulder].Location - body[RiderConstants.BodyButt].Location;
if (!dead && ((nose.X * tail.Y) - (nose.Y * tail.X) < 0 || // tail fakie
(nose.X * head.Y) - (nose.Y * head.X) > 0)) // head fakie
{
dead = true;
sledbroken = true;
}
}
if (UseRemount)
{
ProcessRemount(bones, body, ref dead, ref sledbroken, ref rState, ref rTimer);
}
SimulationPoint[] scarf;
if (stepscarf)
{
scarf = Scarf.Step(friction: true);
if (Settings.multiScarfAmount * Settings.multiScarfSegments > RiderConstants.ScarfBones.Length)
{
Settings.multiScarfAmount = 1;
} //if too big set to zero
if (Settings.multiScarfAmount > 1) //If using dual scarf
{
List <SimulationPoint>[] scarves = new List <SimulationPoint> [Settings.multiScarfAmount];
List <SimulationPoint> finalScarf = new List <SimulationPoint>();
for (int i = 0; i < Settings.multiScarfAmount; i++)
{
scarf[i * Settings.multiScarfSegments] = body[RiderConstants.BodyShoulder];
scarves[i] = new List <SimulationPoint>();
if (i != Settings.multiScarfAmount - 1)
{
for (int k = 0; k < Settings.multiScarfSegments; k++)
{
scarves[i].Add(scarf[k + (i * Settings.multiScarfSegments)]);
}
}
else
{
for (int k = 0; k < scarf.Length - (i * Settings.multiScarfSegments); k++)
{
scarves[i].Add(scarf[k + (i * Settings.multiScarfSegments)]);
}
}
SimulationPoint[] scarfArr = scarves[i].ToArray();
FlutterScarf(scarfArr, frameid, Utility.LengthFast(scarf[i * Settings.multiScarfSegments].Momentum) + (i * 5));
ProcessScarfBones(RiderConstants.ScarfBones, scarfArr);
for (int j = 0; j < scarfArr.Length; j++)
{
finalScarf.Add(scarfArr[j]);
}
}
scarf = finalScarf.ToArray();
}
else
{
scarf[0] = body[RiderConstants.BodyShoulder];
FlutterScarf(scarf, frameid, Utility.LengthFast(scarf[0].Momentum));
ProcessScarfBones(RiderConstants.ScarfBones, scarf);
}
}
else
{
scarf = new SimulationPoint[Scarf.Length];
}
return(new Rider(body, scarf, phys, dead, sledbroken, UseRemount, rState, rTimer));
}