public World()
{
this.InputManager = new InputManager();
this.player = new Player(PlayerStartX, PlayerStartY, this.InputManager);
const double ratioX = 0.0390625;
const double ratioY = 0.0390625;
var obstacles = new RectCollider[]
{
new RectCollider(0 * ratioX, 512 * ratioY, 768 * ratioX, 256 * ratioY),
new RectCollider(16 * ratioX, 256 * ratioY, 16 * ratioX, 256 * ratioY),
new RectCollider(384 * ratioX, 448 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(128 * ratioX, 416 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(256 * ratioX, 368 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(384 * ratioX, 320 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(512 * ratioX, 320 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(512 * ratioX, 240 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(256 * ratioX, 112 * ratioY, 96 * ratioX, 16 * ratioY),
new RectCollider(160 * ratioX, 112 * ratioY, 96 * ratioX, 16 * ratioY)
};
this.updatables = new List<IUpdatable>();
this.updatables.Add(this.player);
this.drawables = new List<IDrawable>();
this.drawables.Add(this.player);
foreach (var obstacle in obstacles)
{
this.drawables.Add(obstacle);
}
this.collidables = new List<ICollidable>();
this.collidables.Add(this.player);
foreach (var obstacle in obstacles)
{
this.collidables.Add(obstacle);
}
this.player.AddCollidables(this.collidables);
}
public void Update(double elapsedSeconds)
{
double initialVelocityY = this.velocityY;
double velocityX = 0;
bool movingLeft = false;
bool movingRight = false;
GravitationalAcceleration = this.inputManager.SliderValue;
JumpVelocityY = -Math.Sqrt(2 * GravitationalAcceleration * 3 * Height);
Debug.WriteLine("Gravitational Acceleration: " + GravitationalAcceleration + ", JumpVelocityY: " + JumpVelocityY);
if (this.inputManager.LeftKeyPressed && this.inputManager.RightKeyPressed)
{
// Left and Right keys cancel each other out
}
else if (this.inputManager.LeftKeyPressed)
{
velocityX = -SpeedX;
movingLeft = true;
}
else if (this.inputManager.RightKeyPressed)
{
velocityX = SpeedX;
movingRight = true;
}
if (!this.grounded)
{
this.velocityY += GravitationalAcceleration * elapsedSeconds;
this.velocityY = Math.Min(this.velocityY, MaxVelocityY);
}
else
{
if (this.inputManager.SpaceKeyPressed)
{
if (!this.spaceKeyProcessed)
{
initialVelocityY = JumpVelocityY;
this.velocityY = initialVelocityY + GravitationalAcceleration * elapsedSeconds;
this.grounded = false;
this.groundCache = null;
this.spaceKeyProcessed = true;
}
}
else
{
this.spaceKeyProcessed = false;
}
}
if (movingLeft || movingRight)
{
double newX = this.collider.X + velocityX * elapsedSeconds;
var pathCollider = new RectCollider(
movingLeft ? newX : this.collider.X + this.collider.Width,
this.collider.Y,
Math.Abs(this.collider.X - newX),
this.collider.Height);
foreach (var collidable in this.collidables)
{
if (collidable != this && pathCollider.IsColliding(collidable))
{
Debug.Assert(!this.IsColliding(collidable));
Rect collided = collidable.GetCollider();
newX = movingLeft ? collided.X + collided.Width : collided.X - this.collider.Width;
pathCollider = new RectCollider(
movingLeft ? newX : this.collider.X + this.collider.Width,
this.collider.Y,
Math.Abs(this.collider.X - newX),
this.collider.Height);
}
}
this.collider.X = newX;
}
if (!this.grounded)
{
// TODO Epsilon
bool movingUp = this.velocityY < 0;
double newY = this.collider.Y + initialVelocityY * elapsedSeconds + (GravitationalAcceleration * elapsedSeconds * elapsedSeconds) / 2;
var pathCollider = new RectCollider(
this.collider.X,
movingUp ? newY : this.collider.Y + this.collider.Height,
this.collider.Width,
Math.Abs(this.collider.Y - newY));
foreach (var collidable in this.collidables)
{
if (collidable != this && pathCollider.IsColliding(collidable))
{
Debug.Assert(!this.IsColliding(collidable));
if (movingUp)
{
this.velocityY = 0;
}
else
{
this.velocityY = 0;
this.grounded = true;
this.groundCache = collidable;
}
Rect collided = collidable.GetCollider();
newY = movingUp ? collided.Y + collided.Height : collided.Y - this.collider.Height;
pathCollider = new RectCollider(
this.collider.X,
movingUp ? newY : this.collider.Y + this.collider.Height,
this.collider.Width,
Math.Abs(this.collider.Y - newY));
}
}
this.collider.Y = newY;
}
else
{
var groundCheck = new RectCollider(
this.collider.X,
this.collider.Y - 1,
this.collider.Width,
this.collider.Height);
if (!groundCheck.IsColliding(this.groundCache))
{
this.grounded = false;
this.groundCache = null;
}
}
}
