void DrawJump(Graphics gfx, JumpGateLink jump)
{
StarSystem a = galaxyGenerator.GetStarSystem(jump.start), b = galaxyGenerator.GetStarSystem(jump.end);
if (a != null && b != null)
{
if (a.id.cellX != b.id.cellX && a.id.cellY != b.id.cellY)
{
throw new Exception();
}
if (a.x < 0 || a.y < 0 || a.x > 1 || a.y > 1)
{
throw new Exception();
}
if (b.x < 0 || b.y < 0 || b.x > 1 || b.y > 1)
{
throw new Exception();
}
float x1 = (((int)a.id.cellX * cellSize) - scrollX) + (a.x * cellSize);
float y1 = (((int)a.id.cellY * cellSize) - scrollY) + (a.y * cellSize);
float x2 = (((int)b.id.cellX * cellSize) - scrollX) + (b.x * cellSize);
float y2 = (((int)b.id.cellY * cellSize) - scrollY) + (b.y * cellSize);
if (Math.Abs(x1 - x2) > cellSize * 2)
{
throw new Exception();
}
if (Math.Abs(y1 - y2) > cellSize * 2)
{
throw new Exception();
}
if (jump.didIntersect)
{
gfx.DrawLine(new Pen(Brushes.Red), x1, y1, x2, y2);
}
else if (Math.Abs((int)a.id.cellX - (int)b.id.cellX) + Math.Abs((int)a.id.cellY - (int)b.id.cellY) != 1)
{
gfx.DrawLine(new Pen(Brushes.Green), x1, y1, x2, y2);
}
else
{
gfx.DrawLine(new Pen(Brushes.DarkOliveGreen), x1, y1, x2, y2);
}
}
}
void CheckConnections(HashSet <StarSystemId> connectedSystems, StarSystemId checkSystem)
{
connectedSystems.Add(checkSystem);
for (int n = 0; n < jumpGates.Count; n++)
{
JumpGateLink link = jumpGates[n];
if (link.start.cellX == cellX && link.start.cellY == cellY &&
link.end.cellX == cellX && link.end.cellY == cellY)
{
if (link.start == checkSystem && !connectedSystems.Contains(link.end))
{
CheckConnections(connectedSystems, link.end);
}
else if (link.end == checkSystem && !connectedSystems.Contains(link.start))
{
CheckConnections(connectedSystems, link.start);
}
}
}
}
bool TryAddJumpGate(StarSystemId a, StarSystemId b, bool avoidIntersections)
{
if (a == b)
{
return(false);
}
// Check duplicates
for (int n = 0; n < jumpGates.Count; n++)
{
if ((jumpGates[n].start == a && jumpGates[n].end == b) ||
(jumpGates[n].start == b && jumpGates[n].end == a))
{
return(false);
}
}
bool intersected = false;
// if (avoidIntersections)
{
float checkStartX, checkStartY;
float checkEndX, checkEndY;
GetStarSystem(a).GetRelativePosition(this, out checkStartX, out checkStartY);
GetStarSystem(b).GetRelativePosition(this, out checkEndX, out checkEndY);
for (int n = 0; n < jumpGates.Count; n++)
{
if (jumpGates[n].start != a && jumpGates[n].start != b &&
jumpGates[n].end != a && jumpGates[n].end != b)
{
float startX, startY;
float endX, endY;
GetStarSystem(jumpGates[n].start).GetRelativePosition(this, out startX, out startY);
GetStarSystem(jumpGates[n].end).GetRelativePosition(this, out endX, out endY);
if (DoIntersect(startX, startY, endX, endY, checkStartX, checkStartY, checkEndX, checkEndY))
{
if (avoidIntersections)
{
return(false);
}
else
{
intersected = true;
}
}
}
}
}
// int connectionCount = GetConnectionCount();
JumpGateLink newLink = new JumpGateLink(a, b);
newLink.didIntersect = intersected;
jumpGates.Add(newLink);
//if(GetConnectionCount() == connectionCount)
//{
// jumpGates.RemoveAt(jumpGates.Count - 1);
//}
return(true);
}