public PixelLine Shift(Direction direction, float distance)
{
PixelLine pixelLine = new PixelLine(this);
pixelLine.p1 = PixelPoint.Shift(this.p1, direction, distance);
pixelLine.p2 = PixelPoint.Shift(this.p2, direction, distance);
return(pixelLine);
}
public static float DistanceOrthographic(PixelLine line, Vector2 pt)
{
float m = (line.p2.y - line.p1.y) / (line.p2.x - line.p1.x); // Slope of parallel lines
float i1 = line.p1.y - line.p1.x * m; // Intercept 1
float i2 = pt.y - pt.x * m; // Intercept 2
float dist = (i2 - i1) / 2 / Mathf.Abs(m / Mathf.Sqrt(m * m + 1));
return(dist);
}
public static float Distance(PixelLine l1, PixelLine l2)
{
float m = (l1.p2.y - l1.p1.y) / (l1.p2.x - l1.p1.x); // Slope of parallel lines
float i1 = l1.p1.y - l1.p1.x * m; // Intercept 1
float i2 = l2.p1.y - l2.p1.x * m; // Intercept 2
float dist = (i2 - i1) / Mathf.Sqrt(m * m + 1);
return(dist);
}
// Within the body
public bool WithinCollisionBody(Vector2 position, float margin = 0.0f)
{
if (PixelLine.DistanceOrthographic(lineNW, position) >= margin)
{
return(false);
}
if (PixelLine.DistanceOrthographic(lineNE, position) >= margin)
{
return(false);
}
if (PixelLine.DistanceOrthographic(lineSW, position) <= -margin)
{
return(false);
}
if (PixelLine.DistanceOrthographic(lineSE, position) <= -margin)
{
return(false);
}
return(true);
}
public static PixelBoxComparison CompareTwoCollisionBodies(PixelBox a, PixelBox b, float margin = 0.0f, bool debug = false)
{
Vector2 atopWorld = a.top;
Vector2 abottomWorld = a.bottom;
Vector2 aleftWorld = a.left;
Vector2 arightWorld = a.right;
Vector2 btopWorld = b.top;
Vector2 bbottomWorld = b.bottom;
Vector2 bleftWorld = b.left;
Vector2 brightWorld = b.right;
PixelBoxComparison collisionBodyComparision = new PixelBoxComparison();
bool aTopLeft = PixelLine.DistanceOrthographic(a.lineNW, b.lineSE) >= -margin;
bool aTopRight = PixelLine.DistanceOrthographic(a.lineNE, b.lineSW) >= -margin;
bool aBottomRight = PixelLine.DistanceOrthographic(b.lineNW, a.lineSE) >= -margin;
bool aBottomLeft = PixelLine.DistanceOrthographic(b.lineNE, a.lineSW) >= -margin;
bool aTopRightWithin = PixelLine.DistanceOrthographic(b.lineNE, a.lineNE) <= margin;
bool aTopLeftWithin = PixelLine.DistanceOrthographic(b.lineNW, a.lineNW) <= margin;
bool aBottomLeftWithin = PixelLine.DistanceOrthographic(a.lineSW, b.lineSW) <= margin;
bool aBottomRightWithin = PixelLine.DistanceOrthographic(a.lineSE, b.lineSE) <= margin;
collisionBodyComparision.NEinside = aTopRightWithin;
collisionBodyComparision.NWinside = aTopLeftWithin;
collisionBodyComparision.SEinside = aBottomRightWithin;
collisionBodyComparision.SWinside = aBottomLeftWithin;
collisionBodyComparision.NEoutside = aBottomLeft;
collisionBodyComparision.NWoutside = aBottomRight;
collisionBodyComparision.SEoutside = aTopLeft;
collisionBodyComparision.SWoutside = aTopRight;
// Debugging Tools
if (debug)
{
if (aTopRightWithin)
{
b.lineNE.Draw(Color.blue, 1.0f);
}
if (aTopLeftWithin)
{
b.lineNW.Draw(Color.blue, 1.0f);
}
if (aBottomLeftWithin)
{
b.lineSW.Draw(Color.blue, 1.0f);
}
if (aBottomRightWithin)
{
b.lineSE.Draw(Color.blue, 1.0f);
}
}
// Sides Vertical
if (aTopLeft)
{
collisionBodyComparision.NWvertical |= (aleftWorld.x < brightWorld.x && aleftWorld.y < brightWorld.y);
}
if (aTopRight)
{
collisionBodyComparision.NEvertical |= (arightWorld.x > bleftWorld.x && arightWorld.y < bleftWorld.y);
}
if (aBottomRight)
{
collisionBodyComparision.SEvertical |= (bleftWorld.x < arightWorld.x && bleftWorld.y < arightWorld.y);
}
if (aBottomLeft)
{
collisionBodyComparision.SWvertical |= (brightWorld.x > aleftWorld.x && brightWorld.y < aleftWorld.y);
}
// Corners Exclusive
if (aTopLeft && aTopRight)
{
collisionBodyComparision.Nexclusive = true;
}
if (aTopLeft && aBottomLeft)
{
collisionBodyComparision.Wexclusive = true;
}
if (aBottomLeft && aBottomRight)
{
collisionBodyComparision.Sexclusive = true;
}
if (aBottomRight && aTopRight)
{
collisionBodyComparision.Eexclusive = true;
}
// Sides Inclusive
if (aTopLeft && (aBottomLeftWithin || aTopRightWithin))
{
collisionBodyComparision.NWinclusive = true;
}
if (aBottomRight && (aBottomLeftWithin || aTopRightWithin))
{
collisionBodyComparision.SEinclusive = true;
}
if (aTopRight && (aTopLeftWithin || aBottomRightWithin))
{
collisionBodyComparision.NEinclusive = true;
}
if (aBottomLeft && (aBottomRightWithin || aTopLeftWithin))
{
collisionBodyComparision.SWinclusive = true;
}
// Sides Exclusive
if (aTopLeft && !aTopRight && !aBottomLeft)
{
collisionBodyComparision.NWexclusive = true;
}
if (aTopRight && !aTopLeft && !aBottomRight)
{
collisionBodyComparision.NEexclusive = true;
}
if (aBottomLeft && !aBottomRight && !aTopLeft)
{
collisionBodyComparision.SEexclusive = true;
}
if (aBottomRight && !aBottomLeft && !aTopRight)
{
collisionBodyComparision.SWexclusive = true;
}
// Above and Below
if (arightWorld.x < brightWorld.x && aleftWorld.x > bleftWorld.x && (aBottomLeftWithin && aBottomRightWithin))
{
collisionBodyComparision.aAbove = true;
}
if (arightWorld.x < brightWorld.x && aleftWorld.x > bleftWorld.x && (aTopLeftWithin && aTopRightWithin))
{
collisionBodyComparision.aBelow = true;
}
return(collisionBodyComparision);
}
// Within Range of a collisionBody
public bool WithinRange(PixelBox other, Direction direction, float distance = 0.4f, float negDistance = 2.0f)
{
PixelBoxComparison comparison = this.CompareWith(other);
if (direction == Direction.NW)
{
if (PixelLine.DistanceOrthographic(lineNW, other.lineSE) < distance &&
PixelLine.DistanceOrthographic(lineNW, other.lineSE) > -negDistance &&
left.x < (other.right.x) && top.x > (other.bottom.x) &&
left.y < (other.right.y) && top.y > (other.bottom.y))
{
return(true);
}
return(false);
}
else if (direction == Direction.NE)
{
if (PixelLine.DistanceOrthographic(lineNE, other.lineSW) < distance &&
PixelLine.DistanceOrthographic(lineNE, other.lineSW) > -negDistance &&
top.x < (other.bottom.x) && right.x > (other.left.x) &&
top.y > (other.bottom.y) && right.y < (other.left.y))
{
return(true);
}
return(false);
}
else if (direction == Direction.SW)
{
if (PixelLine.DistanceOrthographic(lineSW, other.lineNE) > -distance &&
PixelLine.DistanceOrthographic(lineSW, other.lineNE) < negDistance &&
left.x < (other.right.x) && bottom.x > (other.top.x) &&
left.y > (other.right.y) && bottom.y < (other.top.y))
{
return(true);
}
return(false);
}
else if (direction == Direction.SE)
{
if (PixelLine.DistanceOrthographic(lineSE, other.lineNW) > -distance &&
PixelLine.DistanceOrthographic(lineSE, other.lineNW) < negDistance &&
bottom.x < (other.top.x) && right.x > (other.left.x) &&
bottom.y < (other.top.y) && right.y > (other.left.y))
{
return(true);
}
return(false);
}
else if (direction == Direction.All)
{
if (PixelLine.DistanceOrthographic(lineNW, other.lineSE) < distance &&
PixelLine.DistanceOrthographic(lineNW, other.lineSE) > -negDistance &&
left.x < (other.right.x) && top.x > (other.bottom.x) &&
left.y < (other.right.y) && top.y > (other.bottom.y))
{
return(true);
}
if (PixelLine.DistanceOrthographic(lineNE, other.lineSW) < distance &&
PixelLine.DistanceOrthographic(lineNE, other.lineSW) > -negDistance &&
top.x < (other.bottom.x) && right.x > (other.left.x) &&
top.y > (other.bottom.y) && right.y < (other.left.y))
{
return(true);
}
if (PixelLine.DistanceOrthographic(lineSW, other.lineNE) > -distance &&
PixelLine.DistanceOrthographic(lineSW, other.lineNE) < negDistance &&
left.x < (other.right.x) && bottom.x > (other.top.x) &&
left.y > (other.right.y) && bottom.y < (other.top.y))
{
return(true);
}
if (PixelLine.DistanceOrthographic(lineSE, other.lineNW) > -distance &&
PixelLine.DistanceOrthographic(lineSE, other.lineNW) < negDistance &&
bottom.x < (other.top.x) && right.x > (other.left.x) &&
bottom.y < (other.top.y) && right.y > (other.left.y))
{
return(true);
}
return(false);
}
return(false);
}
public HashSet <WayPoint> GetNavigationalMesh(Vector2 startPosition, int stepSize = 0, float margin = 0.0f)
{
if (stepSize == 0)
{
stepSize = this.stepSize;
}
if (navigationMesh.Count != 0)
{
foreach (WayPoint w in navigationMesh)
{
w.distance = float.MaxValue;
w.previous = null;
}
return(new HashSet <WayPoint>(navigationMesh));
}
if (System.Math.Abs(margin) < 0.01f)
{
Character player = GameObject.Find("Player").GetComponent <Character>();
margin = player.GetComponentInChildren <PixelCollider>().navigationMargin;
}
if (top == Vector2.zero)
{
this.gameObject.SetActive(true);
this.gameObject.SetActive(false);
}
Debug.Assert(top != Vector2.zero);
Debug.Assert(bottom != Vector2.zero);
Debug.Assert(left != Vector2.zero);
Debug.Assert(right != Vector2.zero);
// Should all be positive
float topLeftDist = -PixelLine.DistanceOrthographic(collisionbodyWorld.lineNW, startPosition);
float topRightDist = -PixelLine.DistanceOrthographic(collisionbodyWorld.lineNE, startPosition);
float bottomLeftDist = PixelLine.DistanceOrthographic(collisionbodyWorld.lineSW, startPosition);
float bottomRightDist = PixelLine.DistanceOrthographic(collisionbodyWorld.lineSE, startPosition);
Debug.DrawLine(topWorld, leftWorld, Color.blue, 10.0f);
Debug.DrawLine(leftWorld, bottomWorld, Color.blue, 10.0f);
Debug.DrawLine(bottomWorld, rightWorld, Color.blue, 10.0f);
Debug.DrawLine(rightWorld, topWorld, Color.blue, 10.0f);
Vector2 topLeftPoint = startPosition + new Vector2(-topLeftDist / 2.23606f * 2, topLeftDist / 2.23606f);
Vector2 topRightPoint = startPosition + new Vector2(topRightDist / 2.23606f * 2, topRightDist / 2.23606f);
Vector2 bottomLeftPoint = startPosition + new Vector2(-bottomLeftDist / 2.23606f * 2, -bottomLeftDist / 2.23606f);
Vector2 bottomRightPoint = startPosition + new Vector2(bottomRightDist / 2.23606f * 2, -bottomRightDist / 2.23606f);
Debug.Assert(topLeftDist >= 0);
Debug.Assert(topRightDist >= 0);
Debug.Assert(bottomLeftDist >= 0);
Debug.Assert(bottomRightDist >= 0);
float stepSizeLength = (new Vector2(stepSize * 2, stepSize)).magnitude;
int topLeftSteps = Mathf.FloorToInt((topLeftDist - margin) / stepSizeLength);
int topRightSteps = Mathf.FloorToInt((topRightDist - margin) / stepSizeLength);
int bottomLeftSteps = Mathf.FloorToInt((bottomLeftDist - margin) / stepSizeLength);
int bottomRightSteps = Mathf.FloorToInt((bottomRightDist - margin) / stepSizeLength);
topLeftSteps = topLeftSteps >= 0 ? topLeftSteps : 0;
topRightSteps = topRightSteps >= 0 ? topRightSteps : 0;
bottomLeftSteps = bottomLeftSteps >= 0 ? bottomLeftSteps : 0;
bottomRightSteps = bottomRightSteps >= 0 ? bottomRightSteps : 0;
WayPoint[,] wayPointArray = new WayPoint[bottomLeftSteps + topRightSteps + 1, bottomRightSteps + topLeftSteps + 1];
for (int i = -bottomLeftSteps; i <= topRightSteps; ++i)
{
for (int j = -bottomRightSteps; j <= topLeftSteps; ++j)
{
Vector2 point = startPosition + new Vector2(stepSize * 2, stepSize) * i + new Vector2(-stepSize * 2, stepSize) * j;
WayPoint wayPoint = new WayPoint(point);
wayPointArray[i + bottomLeftSteps, j + bottomRightSteps] = wayPoint;
}
}
for (int i = -bottomLeftSteps; i <= topRightSteps; ++i)
{
for (int j = -bottomRightSteps; j <= topLeftSteps; ++j)
{
if (i != -bottomLeftSteps)
{
wayPointArray[i - 1 + bottomLeftSteps, j + bottomRightSteps].neighbours.Add(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
if (i != topRightSteps)
{
wayPointArray[i + 1 + bottomLeftSteps, j + bottomRightSteps].neighbours.Add(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
if (j != -bottomRightSteps)
{
wayPointArray[i + bottomLeftSteps, j - 1 + bottomRightSteps].neighbours.Add(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
if (j != topLeftSteps)
{
wayPointArray[i + bottomLeftSteps, j + 1 + bottomRightSteps].neighbours.Add(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
}
}
// Remove all waypoints with pixel colliders
for (int c = 0; c < transform.childCount; ++c)
{
Transform t = transform.GetChild(c);
// Remove all movable objects
if (t.GetComponent <MovableObject>())
{
continue;
}
PixelCollider[] pixelColliders = t.GetComponentsInChildren <PixelCollider>();
foreach (PixelCollider pixelCollider in pixelColliders)
{
if (pixelCollider != null && pixelCollider.isActiveAndEnabled)
{
List <WayPoint> badWayPoints = new List <WayPoint>();
for (int i = -bottomLeftSteps; i <= topRightSteps; ++i)
{
for (int j = -bottomRightSteps; j <= topLeftSteps; ++j)
{
if (wayPointArray[i + bottomLeftSteps, j + bottomRightSteps] == null)
{
continue;
}
if (pixelCollider.CheckForWithinCollider(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps].position, margin))
{
foreach (WayPoint n in wayPointArray[i + bottomLeftSteps, j + bottomRightSteps].neighbours)
{
n.neighbours.Remove(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
wayPointArray[i + bottomLeftSteps, j + bottomRightSteps] = null;
}
}
}
}
}
}
for (int i = -bottomLeftSteps; i <= topRightSteps; ++i)
{
for (int j = -bottomRightSteps; j <= topLeftSteps; ++j)
{
if (wayPointArray[i + bottomLeftSteps, j + bottomRightSteps] != null)
{
navigationMesh.Add(wayPointArray[i + bottomLeftSteps, j + bottomRightSteps]);
}
}
}
return(new HashSet <WayPoint>(navigationMesh));
}
public PixelLine(PixelLine pixelLine)
{
this.p1 = pixelLine.p1;
this.p2 = pixelLine.p2;
}