private void Events_KeyboardDown(object sender, KeyboardEventArgs e)
{
this.pressedKey = e.Key;
switch (e.Key)
{
case Key.Escape:
case Key.Q:
Events.QuitApplication();
break;
case Key.A:
var box = Box.Create(this.world, this.mousePos.X, this.mousePos.Y, 0.1f, 0.1f, 1f);
box.Color = Helper.GetRandomColor();
this.worldObjects.Add(box);
break;
case Key.C:
var circle = Circle.Create(world, this.mousePos.X, this.mousePos.Y, 0.3f, 1.0f);
circle.Color = Helper.GetRandomColor();
this.worldObjects.Add(circle);
break;
case Key.R:
var car = Car.Create(this.world, this.mousePos.X, this.mousePos.Y, 0.4f, 0.8f);
this.worldObjects.Add(car);
this.lastCar = car;
break;
/* case Key.LeftArrow:
if (this.lastCar != null)
{
this.lastCar.Accelerate();
}
break;
case Key.RightArrow:
if (this.lastCar != null)
{
this.lastCar.Deccelerate();
}
break;*/
}
}
public static Car Create(World world, float positionX, float positionY, float width, float height)
{
float poleHeightCarHeightRatio = 0.7f;
var car = new Car();
car.Width = width;
car.Height = height;
float carHeight = height * (1.0f - poleHeightCarHeightRatio);
float bodyHeightWheelHeightRatio = 0.4f;
float bodyHeight = carHeight * bodyHeightWheelHeightRatio;
float wheelRadius = carHeight - bodyHeight;
float bodyDensity = 1.5f;
float wheelDensity = 0.4f;
float wheelFriction = 0.9f;
var poleDensity = 0.2f;
float poleWidth = car.Width / 10.0f;
float poleHeight = car.Height * poleHeightCarHeightRatio;
car.CarBody = Box.Create(world, positionX, positionY, car.Width, bodyHeight, bodyDensity);
car.FrontWheel = Circle.Create(
world,
positionX - car.Width + wheelRadius / 2.0f,
positionY - car.CarBody.Height,
wheelRadius,
wheelDensity,
wheelFriction);
car.BackWheel = Circle.Create(
world,
positionX + car.Width - wheelRadius / 2.0f,
positionY - car.CarBody.Height,
wheelRadius,
wheelDensity,
wheelFriction);
car.Pole = Box.Create(
world, positionX, positionY + bodyHeight*1f + poleHeight, poleWidth, poleHeight, poleDensity);
car.BodyColor = Helper.GetRandomColor();
car.WheelsColor = Helper.GetRandomColor();
car.Pole.Color = Helper.GetRandomColor();
car.CreatePhysics(world,positionX, positionY);
return car;
}
private void Draw(Car car)
{
Draw(car.CarBody);
Draw(car.FrontWheel);
Draw(car.BackWheel);
Draw(car.Pole);
}