private static TrackGenerator.TrackPlacementState CalculateStateForLocation(
int x,
int y)
{
for (int index = 0; index < 6; ++index)
{
if (TrackGenerator.IsLocationInvalid(x, y - index))
{
return(TrackGenerator.TrackPlacementState.Invalid);
}
}
for (int index = 0; index < 6; ++index)
{
if (TrackGenerator.IsMinecartTrack(x, y + index))
{
return(TrackGenerator.TrackPlacementState.Invalid);
}
}
for (int index = 0; index < 6; ++index)
{
if (WorldGen.SolidTile(x, y - index, false))
{
return(TrackGenerator.TrackPlacementState.Obstructed);
}
}
return(WorldGen.IsTileNearby(x, y, 314, 30) ? TrackGenerator.TrackPlacementState.Invalid : TrackGenerator.TrackPlacementState.Available);
}
public bool Place(Point origin, int minLength, int maxLength)
{
if (!TrackGenerator.FindSuitableOrigin(ref origin))
{
return(false);
}
this.CreateTrackStart(origin);
if (!this.FindPath(minLength, maxLength))
{
return(false);
}
this.PlacePath();
return(true);
}
private static bool FindSuitableOrigin(ref Point origin)
{
TrackGenerator.TrackPlacementState stateForLocation;
while ((stateForLocation = TrackGenerator.CalculateStateForLocation(origin.X, origin.Y)) != TrackGenerator.TrackPlacementState.Obstructed)
{
++origin.Y;
if (stateForLocation == TrackGenerator.TrackPlacementState.Invalid)
{
return(false);
}
}
--origin.Y;
return(TrackGenerator.CalculateStateForLocation(origin.X, origin.Y) == TrackGenerator.TrackPlacementState.Available);
}
private TrackGenerator.TrackPlacementState CreateTunnel()
{
TrackGenerator.TrackSlope trackSlope1 = TrackGenerator.TrackSlope.Straight;
int num = 10;
TrackGenerator.TrackPlacementState trackPlacementState1 = TrackGenerator.TrackPlacementState.Invalid;
int x = (int)this._history[this._length - 1].X;
int y = (int)this._history[this._length - 1].Y;
for (TrackGenerator.TrackSlope trackSlope2 = TrackGenerator.TrackSlope.Up; trackSlope2 <= TrackGenerator.TrackSlope.Down; ++trackSlope2)
{
TrackGenerator.TrackPlacementState trackPlacementState2 = TrackGenerator.TrackPlacementState.Invalid;
for (int index = 1; index < num; ++index)
{
trackPlacementState2 = TrackGenerator.CalculateStateForLocation(x + index * this._xDirection, y + index * (int)trackSlope2);
switch (trackPlacementState2)
{
case TrackGenerator.TrackPlacementState.Obstructed:
continue;
case TrackGenerator.TrackPlacementState.Invalid:
goto label_6;
default:
trackSlope1 = trackSlope2;
num = index;
trackPlacementState1 = trackPlacementState2;
goto label_6;
}
}
label_6:
if (trackPlacementState1 != TrackGenerator.TrackPlacementState.Available && trackPlacementState2 == TrackGenerator.TrackPlacementState.Obstructed && (trackPlacementState1 != TrackGenerator.TrackPlacementState.Obstructed || trackSlope1 != TrackGenerator.TrackSlope.Straight))
{
trackSlope1 = trackSlope2;
num = 10;
trackPlacementState1 = trackPlacementState2;
}
}
if (this._length == 0 || !TrackGenerator.CanSlopesTouch(this._history[this._length - 1].Slope, trackSlope1))
{
this.RewriteSlopeDirection(this._length - 1, TrackGenerator.TrackSlope.Straight);
}
this._history[this._length - 1].Mode = TrackGenerator.TrackMode.Tunnel;
for (int index = 1; index < num; ++index)
{
this.AppendToHistory(trackSlope1, TrackGenerator.TrackMode.Tunnel);
}
return(trackPlacementState1);
}
private TrackGenerator.TrackPlacementState GetHistorySegmentPlacementState(
int startIndex,
int length)
{
TrackGenerator.TrackPlacementState trackPlacementState = TrackGenerator.TrackPlacementState.Available;
for (int index = startIndex; index < startIndex + length; ++index)
{
TrackGenerator.TrackPlacementState stateForLocation = TrackGenerator.CalculateStateForLocation((int)this._history[index].X, (int)this._history[index].Y);
switch (stateForLocation)
{
case TrackGenerator.TrackPlacementState.Obstructed:
if (this._history[index].Mode != TrackGenerator.TrackMode.Tunnel)
{
trackPlacementState = stateForLocation;
break;
}
break;
case TrackGenerator.TrackPlacementState.Invalid:
return(stateForLocation);
}
}
return(trackPlacementState);
}
private void SmoothTrack(TrackGenerator.TrackHistory[] history, int length)
{
int num = length - 1;
bool flag = false;
for (int i = length - 1; i >= 0; i--)
{
if (flag)
{
num = Math.Min(i + 15, num);
if (history[i].Y >= history[num].Y)
{
int num2 = i + 1;
while (history[num2].Y > history[i].Y)
{
history[num2].Y = history[i].Y;
num2++;
}
if (history[i].Y == history[num].Y)
{
flag = false;
}
}
}
else if (history[i].Y > history[num].Y)
{
flag = true;
}
else
{
num = i;
}
}
}