protected override void Initialize()
{
// store the scale transformation that will be used for all drawing
Vector3 scaleVector3 = new Vector3(scaleFactor, scaleFactor, 1);
scaleTransormation = Matrix.CreateScale(scaleVector3);
// TODO: Add your initialization logic here
//graphics init
graphics.PreferredBackBufferWidth = (int)(gameScreenSize.X * scaleFactor);
graphics.PreferredBackBufferHeight = (int)(gameScreenSize.Y * scaleFactor);
graphics.ApplyChanges();
//tiles init (set size, then set tiles
var width = (int)(gameScreenSize.X / tileSize.X);
var height = (int)(gameScreenSize.Y / tileSize.Y);
tileSet = new TileSet(tileSize, width, height);
player = new Player(
position: new Vector2(
gameScreenSize.X / 2,
gameScreenSize.Y / 2),
size: tileSize);
dog = new Dog(
position: new Vector2(
gameScreenSize.X / 2,
gameScreenSize.Y - 5),
size: tileSize);
//need a cleaner way to add behaviors
//also, should be able to add a behavior without needing to specify owner
//owner should always be the class that the behaviors are being added to
//maybe behaviors cant be edited directly
//and put an add behavior function in the entity class?
//player behaviors
player.AddBehavior(
new Gravity(
acceleration: new Vector2(0, 10)));
player.AddBehavior(
new Friction());
player.AddBehavior(
new Move(
lateralAcceleration: 16f));
player.AddBehavior(
new Jump(
playerControlled: true,
velocity: new Vector2(0, -150)));
//dog behaviors
dog.AddBehavior(
new Gravity(
acceleration: new Vector2(0, 10)));
dog.AddBehavior(
new Friction());
dog.AddBehavior(
new Follow(
target: player,
lateralAcceleration: 5f));
dog.AddBehavior(
new Jump(
playerControlled: false,
velocity: new Vector2(0, -150)));
base.Initialize();
}
void MoveAndCollide(TileSet tileSet)
{
//right now this does not handle all level boundaries
//set that we are not on the ground initially
//only say we are on the ground if we collide from the bottom
tileStandingOn = null;
//do X movement + collision
if (velocity.X != 0)
{
int move = MathUtil.Round(velocity.X);
if (move != 0)
{
int sign = Math.Sign(move);
while (move != 0)
{
//check our location, moving one pixel at a time
//check the collision one pixel in the x direction
var collidedTile = collidesWithTile(tileSet, position + new Vector2(sign, 0));
if (collidedTile != null)
{
//collision occurred
//do not move
//break out of this loop
velocity.X = 0;
break;
}
else
{
//did not collide
//do one pixel of the move
position.X += sign;
move -= sign;
}
}
}
}
//then do Y
if (velocity.Y != 0)
{
int move = MathUtil.Round(velocity.Y);
if (move != 0)
{
int sign = Math.Sign(move);
while (move != 0)
{
var collidedTile = collidesWithTile(tileSet, position + new Vector2(0, sign));
if (collidedTile != null)
{
//collision occurred
//we know we are on the ground if the sign of the move is 1 (moving down, collided)
//is that true?
if (sign == 1)
{
tileStandingOn = collidedTile;
}
//do not move
//break out of this loop
velocity.Y = 0;
break;
}
else
{
//did not collide
//do one pixel of the move
position.Y += sign;
move -= sign;
}
}
}
}
}
public override void Update(GameTime gameTime, Vector2 gameScreenSize, KeyboardState keyboardState, TileSet tileSet)
{
//hmm, nothing special about dog either?
//is this the right approach?
//where should behaviors be initiated?
base.Update(gameTime, gameScreenSize, keyboardState, tileSet);
}
public override void Update(GameTime gameTime, Vector2 gameScreenSize, KeyboardState keyboardState, TileSet tileSet)
{
//nothing special about the player for now!
base.Update(gameTime, gameScreenSize, keyboardState, tileSet);
}