public static bool CircleAABBOverlap(Vector2f centre, float radius, cAABB rect)
{
return(IsPointInsideBox(centre, rect) ||
isPointInsideCircle(centre, radius, rect.topLeft) ||
isPointInsideCircle(centre, radius, rect.rightBottom) ||
isPointInsideCircle(centre, radius, new Vector2f(rect.rightBottom.X, rect.topLeft.Y)) ||
isPointInsideCircle(centre, radius, new Vector2f(rect.topLeft.X, rect.rightBottom.Y)));
}
public static bool testLineVsAABB(Vector2f line_start, Vector2f line_end, cAABB box, ref Vector2f intersection)
{
Vector2f topLeft = box.topLeft;
Vector2f topRight = new Vector2f(box.rightBottom.X, box.topLeft.Y);
Vector2f rightBottom = box.rightBottom;
Vector2f leftBottom = new Vector2f(box.topLeft.X, box.rightBottom.Y);
// LineVsLine
return(lineVsLineCollision(line_start, line_end, topLeft, topRight, ref intersection) ||
lineVsLineCollision(line_start, line_end, topRight, rightBottom, ref intersection) ||
lineVsLineCollision(line_start, line_end, rightBottom, leftBottom, ref intersection) ||
lineVsLineCollision(line_start, line_end, leftBottom, topLeft, ref intersection));
}
public static cGameObject MakeWall(cAABB box)
{
cGameObject go = new cGameObject();
go.Position = box.center;
go.LastPosition = go.Position;
go.Velocity = new Vector2f(0.0f, 0.0f);
go.ViewPosition = go.Position;
//box.SetDims(new Vector2f(Constants.TILE_SIZE, Constants.TILE_SIZE));
go.Bounds = box;
go.HitCollisionRect = box;
go.MovAble = false; // important!
go.Mass = 0.0f;
return(go);
}
public cGameObject(cGameScene scene, Vector2f pos) : base()
{
pscene = scene;
position = pos;
lastPosition = pos;
viewPosition = pos;
velocity = new Vector2f(0.0f, 0.0f);
acceleration = new Vector2f(0.0f, 0.0f);
force = new Vector2f(0.0f, 0.0f);
orientation = 0.0;
mass = 1.0f;
movAble = true;
hitCollisionRect = new cAABB();
m_ID = GetNextValidID();
}
public static Vector2f getNormalOfClosestSide(Vector2f point, cAABB box)
{
/*if (IsPointInsideBox(point, box))
* return Side.INSIDE;*/
Vector2f topLeft = box.topLeft;
Vector2f topRight = new Vector2f(box.rightBottom.X, box.topLeft.Y);
Vector2f rightBottom = box.rightBottom;
Vector2f leftBottom = new Vector2f(box.topLeft.X, box.rightBottom.Y);
Vector2f ntop = cAppMath.Vec2Perp(topRight - topLeft);
Vector2f nright = cAppMath.Vec2Perp(rightBottom - topRight);
Vector2f nbottom = cAppMath.Vec2Perp(leftBottom - rightBottom);
Vector2f nleft = cAppMath.Vec2Perp(topLeft - rightBottom);
return(ntop);
}
public cGameObject() : base()
{
pscene = null;
position = new Vector2f(0.0f, 0.0f);;
lastPosition = new Vector2f(0.0f, 0.0f);;
viewPosition = new Vector2f(0.0f, 0.0f);;
velocity = new Vector2f(0.0f, 0.0f);
acceleration = new Vector2f(0.0f, 0.0f);
force = new Vector2f(0.0f, 0.0f);
MaxSpeed = 0.0f;
SlowDown = 1.0f;
orientation = 0.0;
mass = 1.0f;
movAble = true;
hitCollisionRect = new cAABB();
m_ID = GetNextValidID();
}
public static bool IsPointInsideBox(Vector2f point, cAABB box)
{
if (point.X <= box.topLeft.X)
{
return(false);
}
if (point.X >= box.rightBottom.X)
{
return(false);
}
if (point.Y <= box.topLeft.Y)
{
return(false);
}
if (point.Y >= box.rightBottom.Y)
{
return(false);
}
return(true);
}
public static bool testBulletVsEntity(Vector2f bulPos, Vector2f bulLastPos, cAABB entityBounds, ref Vector2f intersection)
{
int x0 = (int)bulLastPos.X;
int y0 = (int)bulLastPos.Y;
int x1 = (int)bulPos.X;
int y1 = (int)bulPos.Y;
bool collision = false;
Vector2f temp = new Vector2f(0.0f, 0.0f);
cAppMath.Raytrace(x0, y0, x1, y1, new VisitMethod(
(int x, int y) =>
{
collision = IsPointInsideBox(new Vector2f(x, y), entityBounds);
temp.X = x;
temp.Y = y;
return(collision);
}
)
);
intersection = temp;
return(collision);
}
public static bool OverlapAABB(cAABB A, cAABB B)
{
if (A.rightBottom.Y <= B.topLeft.Y)
{
return(false);
}
if (A.topLeft.Y >= B.rightBottom.Y)
{
return(false);
}
if (A.rightBottom.X <= B.topLeft.X)
{
return(false);
}
if (A.topLeft.X >= B.rightBottom.X)
{
return(false);
}
return(true);
}
protected virtual void init()
{
bounds = new cAABB(0, 0, 1, 1);
bounds.SetDims(new Vector2f(Constants.CHAR_COLLISON_RECT.Width, Constants.CHAR_COLLISON_RECT.Height));
bounds.SetPosByTopLeft(position);
this.hitCollisionRect.SetDims(new Vector2f(32.0f, 32.0f));
this.hitCollisionRect.SetPosByTopLeft(position);
shape = new RectangleShape();
shape.FillColor = Color.Green;
shape.Size = new Vector2f(bounds.dims.X, bounds.dims.Y);
isJumpActive = false;
isOnGround = false;
isOnOnewWayPlatform = false;
horizontalFacing = HorizontalFacing.FACING_RIGHT;
//must call, else not working
spriteControl.ChangeState(this.GetSpriteState());
this.health = 1;
}
