protected override void UpdateContents(GameTime CurrTime, KeyboardState CurrKeys, MouseState CurrMouse, bool ProcessMOuseEvent)
{
Vector2 SpeedAdjust, NewPos, ShipCenter;
//float RotatDegrees;
if (MouseRotate == false)
{
if (CurrKeys.IsKeyDown(Keys.Left) == true)
{
cRotation += 0.03f;
if (cRotation > 6.28318531f)
{
cRotation = 0;
}
HasChanged = true;
}
if (CurrKeys.IsKeyDown(Keys.Right) == true)
{
cRotation -= 0.03f;
if (cRotation < 0)
{
cRotation = 6.28318531f;
}
HasChanged = true;
}
if (CurrKeys.IsKeyDown(Keys.Up) == true)
{
SpeedAdjust = MGMath.CalculateXYMagnitude(cRotation, 0.1f);
cSpeedX += SpeedAdjust.X;
cSpeedY -= SpeedAdjust.Y;
}
if (CurrKeys.IsKeyDown(Keys.Down) == true)
{
SpeedAdjust = MGMath.CalculateXYMagnitude(cRotation, 0.1f);
cSpeedX -= SpeedAdjust.X;
cSpeedY += SpeedAdjust.Y;
}
}
else
{
ShipCenter.Y = Height / 2;
ShipCenter.X = Width / 2;
cRotation = MGMath.GetAngleFromPoints(ShipCenter, CurrMouse.Position.ToVector2(), true) + ImageInitialAngle;
if (cRotation != ImageInitialAngle) //Ship rotation has changed
{
HasChanged = true;
}
if (CurrKeys.IsKeyDown(Keys.W) == true)
{
cSpeedY -= SPEEDSTEP;
}
else if (cSpeedY < 0)
{
cSpeedY += SPEEDSTEP / 2;
}
if (CurrKeys.IsKeyDown(Keys.S) == true)
{
cSpeedY += SPEEDSTEP;
}
else if (cSpeedY > 0)
{
cSpeedY -= SPEEDSTEP / 2;
}
if (cSpeedY > SPEEDMAX)
{
cSpeedY = SPEEDMAX;
}
else if (cSpeedY < SPEEDMAX * -1)
{
cSpeedY = SPEEDMAX * -1;
}
if (CurrKeys.IsKeyDown(Keys.A) == true)
{
cSpeedX -= SPEEDSTEP;
}
else if (cSpeedX < 0)
{
cSpeedX += SPEEDSTEP / 2;
}
if (CurrKeys.IsKeyDown(Keys.D) == true)
{
cSpeedX += SPEEDSTEP;
}
else if (cSpeedX > 0)
{
cSpeedX -= SPEEDSTEP / 2;
}
if (cSpeedX < SPEEDMAX * -1)
{
cSpeedX = SPEEDMAX * -1;
}
else if (cSpeedX > SPEEDMAX)
{
cSpeedX = SPEEDMAX;
}
}
NewPos = TopLeft;
NewPos.X += cSpeedX;
NewPos.Y += cSpeedY;
TopLeft = NewPos;
if (Top < -1 * (cDrawRegion.Height + cDrawRegion.X))
{
Top = cGraphicsDevice.Viewport.Bounds.Height;
}
if (Top > cGraphicsDevice.Viewport.Bounds.Height)
{
Top = -1 * cDrawRegion.Height;
}
if (Left < -1 * (cDrawRegion.Width + cDrawRegion.X))
{
Left = cGraphicsDevice.Viewport.Bounds.Width;
}
if (Left > cGraphicsDevice.Viewport.Bounds.Width)
{
Left = -1 * cDrawRegion.Width;
}
}
public void CalculateAngleFromPoints()
{
Vector2 Point1, Point2;
float AngleRadians;
string TestName;
TestName = "Horizontal line, 0 degrees = 0 radians";
Point1.X = 1;
Point1.Y = 1;
Point2.X = 2;
Point2.Y = 1;
AngleRadians = MGMath.GetAngleFromPoints(Point1, Point2);
Assert.AreEqual(0.0f, AngleRadians, TestName);
TestName = "Horizontal line, 180 degrees = 3.14 radians";
Point1.X = 1;
Point1.Y = 1;
Point2.X = 2;
Point2.Y = 1;
AngleRadians = MGMath.GetAngleFromPoints(Point2, Point1);
Assert.AreEqual((float)Math.PI, AngleRadians, TestName);
TestName = "Diagonal line, 45 degrees = 0.785 radians";
Point1.X = 1;
Point1.Y = 1;
Point2.X = 2;
Point2.Y = 2;
AngleRadians = MGMath.GetAngleFromPoints(Point1, Point2);
Assert.AreEqual((float)(Math.PI / 4), AngleRadians, TestName);
TestName = "Diagonal line, 135 degrees = 2.356 radians";
Point1.X = -2;
Point1.Y = -2;
Point2.X = -3;
Point2.Y = -1;
AngleRadians = MGMath.GetAngleFromPoints(Point1, Point2);
Assert.AreEqual((float)(Math.PI * 3 / 4), AngleRadians, TestName);
TestName = "Diagonal line, 225 degrees = 3.93 radians";
Point1.X = 1;
Point1.Y = 1;
Point2.X = 2;
Point2.Y = 2;
AngleRadians = MGMath.GetAngleFromPoints(Point2, Point1);
Assert.AreEqual((float)(Math.PI + (Math.PI / 4)), AngleRadians, TestName);
TestName = "Diagonal line, 225 degrees = 3.93 radians";
Point1.X = 0;
Point1.Y = 0;
Point2.X = -1;
Point2.Y = -1;
AngleRadians = MGMath.GetAngleFromPoints(Point1, Point2);
Assert.AreEqual((float)(Math.PI + (Math.PI / 4)), AngleRadians, TestName);
TestName = "Diagonal line, 315 degrees = 5.498 radians";
Point1.X = 0;
Point1.Y = 0;
Point2.X = 1;
Point2.Y = -1;
AngleRadians = MGMath.GetAngleFromPoints(Point1, Point2);
Assert.AreEqual((float)(Math.PI + (Math.PI * 3 / 4)), AngleRadians, TestName);
}
/// <summary>
/// Update game state and all content. Should be called once every redraw, possibly called
/// more often than the draws but only if it exceeds time between frame draws.
/// </summary>
/// <param name="gameTime">Current time information of the application</param>
protected override void Update(GameTime gameTime)
{
int nVertCtr, nPolyCtr, nTestCtr;
List <Vector2> VertList = new List <Vector2>();
MouseState CurrMouse = Mouse.GetState();
Vector2 MousePt;
Color NewColor;
MousePt.X = CurrMouse.X;
MousePt.Y = CurrMouse.Y;
if ((CurrMouse.LeftButton == ButtonState.Pressed) && (cPriorMouse.LeftButton == ButtonState.Released))
{
//Mouse was just clicked, see if its in range of a vertex
for (nPolyCtr = 0; nPolyCtr < cPolyList.Count; nPolyCtr++)
{
VertList.Clear();
VertList.AddRange(cPolyList[nPolyCtr].GetVertexes(false));
for (nVertCtr = 0; nVertCtr < VertList.Count; nVertCtr++)
{
if (MGMath.IsPointInCircle(MousePt, VertList[nVertCtr], CIRCLERADIUS) == true)
{
cMousePoly = cPolyList[nPolyCtr];
cMouseVertIdx = nVertCtr;
break;
}
}
}
for (nPolyCtr = 0; cMousePoly == null && nPolyCtr < cPolyList.Count; nPolyCtr++)
{
if (MGMath.PointInConvexPolygon(MousePt, cPolyList[nPolyCtr].GetVertexes(false)) == true)
{
cMovePoly = cPolyList[nPolyCtr];
cMoveStart = MousePt;
break;
}
}
}
else if ((CurrMouse.LeftButton == ButtonState.Released) && (CurrMouse.RightButton == ButtonState.Pressed) && (cPriorMouse.RightButton == ButtonState.Released))
{
//Mouse was just clicked, see if its in range of a vertex
for (nPolyCtr = 0; cMousePoly == null && nPolyCtr < cPolyList.Count; nPolyCtr++)
{
if (MGMath.PointInConvexPolygon(MousePt, cPolyList[nPolyCtr].GetVertexes(false)) == true)
{
cMousePoly = cPolyList[nPolyCtr];
cMoveStart = MousePt;
break;
}
}
}
if ((CurrMouse.LeftButton == ButtonState.Released) && (CurrMouse.RightButton == ButtonState.Released) && ((cPriorMouse.LeftButton == ButtonState.Pressed) || (cPriorMouse.RightButton == ButtonState.Pressed)))
{
//Mouse was just released
cMousePoly = null;
cMovePoly = null;
}
if ((CurrMouse.LeftButton == ButtonState.Pressed) && (cMousePoly != null))
{
//Update the position of the selected vertex
cMousePoly.UpdateVertex(cMouseVertIdx, MousePt);
}
if ((CurrMouse.LeftButton == ButtonState.Pressed) && (cMovePoly != null))
{
//Update the position of the selected polygon
cMovePoly.MoveShape(MousePt - cMoveStart);
cMoveStart = MousePt;
}
if ((CurrMouse.LeftButton == ButtonState.Released) && (CurrMouse.RightButton == ButtonState.Pressed) && (cMousePoly != null))
{
//Update the rotation of the selected vertex
cMousePoly.RotateShape = MGMath.GetAngleFromPoints(cMoveStart, MousePt);
}
cPriorMouse = CurrMouse;
//Check if the polygons are colliding and make them red
for (nPolyCtr = 0; nPolyCtr < cPolyList.Count; nPolyCtr++)
{
//Reset the background color
NewColor = cPolyList[nPolyCtr].LineColor;
NewColor.R = 0;
cPolyList[nPolyCtr].LineColor = NewColor;
for (nTestCtr = 0; nTestCtr < cPolyList.Count; nTestCtr++)
{
if (nPolyCtr == nTestCtr) //Can't collide with itself
{
continue;
}
if (cPolyList[nPolyCtr].TestCollision(cPolyList[nTestCtr]) == true)
{
NewColor = cPolyList[nPolyCtr].LineColor;
NewColor.R = 255;
cPolyList[nPolyCtr].LineColor = NewColor;
}
}
}
cDevConsole.Update(gameTime);
//Use monogame update
base.Update(gameTime);
}
public override bool Update(GameTime CurrTime)
{
Vector2 MyCenter, TargetCenter, Speed;
float Distance;
MyCenter.X = TopLeft.X + (Width / 2);
MyCenter.Y = TopLeft.Y + (Height / 2);
TargetCenter = TargetObject.GetCenterCoordinates();
Rotation = MGMath.GetAngleFromPoints(MyCenter, TargetCenter, true);
Distance = MGMath.SquaredDistanceBetweenPoints(MyCenter, TargetCenter);
if ((Distance >= MaxDistanceFromTarget * MaxDistanceFromTarget) && (cStrafeDirection != 0)) //Too far away get closer
{
Speed = MGMath.CalculateXYMagnitude(Rotation, 3);
cStrafeDirection = 0;
}
else if ((Distance >= (MaxDistanceFromTarget * MaxDistanceFromTarget * 0.8f * 0.8f)) && (cStrafeDirection == 0)) //If moving forward overshoot a bit
{
Speed = MGMath.CalculateXYMagnitude(Rotation, 3);
}
else if (Distance <= MinDistanceFromTarget * MinDistanceFromTarget) //Too close back away
{
Speed = MGMath.CalculateXYMagnitude(Rotation + 3.14f, 3);
cStrafeDirection = 0;
}
else if ((Distance <= MinDistanceFromTarget * MinDistanceFromTarget * 1.2f * 1.2f) && (cStrafeDirection == 0)) //If backing away overshoot a bit
{
Speed = MGMath.CalculateXYMagnitude(Rotation + 3.14f, 3);
}
else //Close enough, circle
{
if (cStrafeDirection == 0)
{
if (cRand.Next(1, 3) == 1)
{
cStrafeDirection = -1;
}
else
{
cStrafeDirection = 1;
}
}
Speed = MGMath.CalculateXYMagnitude(Rotation + 1.57f, 2);
Speed.X *= cStrafeDirection;
Speed.Y *= cStrafeDirection;
}
SpeedX = (SpeedX + Speed.X) / 2;
SpeedY = (SpeedY + Speed.Y) / 2;
TopLeft.X += SpeedX;
TopLeft.Y -= SpeedY;
if (cLastShot == 0)
{
cLastShot = CurrTime.TotalGameTime.TotalMilliseconds + 1500 + cRand.Next(1000);
}
if (cLastShot < CurrTime.TotalGameTime.TotalMilliseconds)
{
Vector2 BulletOrigin;
BulletOrigin.Y = TopLeft.Y + (Height / 2);
BulletOrigin.X = TopLeft.X + (Height / 2);
Rotation += (float)(cRand.Next(-10, 10) * (Math.PI / 180.0)); //Randmize the direction so that it's not perfect (+/- 10 degrees)
BulletManager.AddParticle(BulletTexture, BulletOrigin.Y - 10, BulletOrigin.X - 10, 20, 20, Rotation, 8, new Color(255, 75, 75, 255));
cLastShot = CurrTime.TotalGameTime.TotalMilliseconds + 1500 + cRand.Next(1000);
}
return(true);
}
