func InitializeGame(width, height int) Game {
var game Game
game.Width = width
game.Height = height
game.Boundary = new(gt2d.Rectangle)
game.Boundary.Min = gt2d.Vector2D{0, 0}
game.Boundary.Max = gt2d.Vector2D{width + 1, height + 1} // correction factor.
// Initializes the boards.
// 50 is the height of the boards.
game.Board1 = NewBoard(gt2d.Vector2D{80, height/2 - 50}, gt2d.Rect(0, 0, width/2+1, height+1))
game.Board2 = NewBoard(gt2d.Vector2D{width - 90, height/2 - 50}, gt2d.Rect(width/2+21, 0, width+1, height+1))
game.Bul = NewBullet(game.Boundary)
game.keysDown = make(map[string]bool)
game.keysDown[wde.KeyW] = false
game.keysDown[wde.KeyS] = false
game.keysDown[wde.KeyD] = false
game.keysDown[wde.KeyA] = false
game.keysDown[wde.KeyUpArrow] = false
game.keysDown[wde.KeyDownArrow] = false
game.keysDown[wde.KeyRightArrow] = false
game.keysDown[wde.KeyLeftArrow] = false
game.Running = true
return game
}
func NewBullet(boundary *gt2d.Rectangle) *Bullet {
rand.Seed(time.Now().UTC().UnixNano())
bullet := new(Bullet)
bullet.Boundary = boundary
// init with a random velocity and direction
bullet.Velocity = new(gt2d.Vector2D)
for {
if abs(bullet.Velocity.X) > 1 && abs(bullet.Velocity.Y) > 1 {
break
}
bullet.Velocity.X = rand.Intn(16) - 8
bullet.Velocity.Y = rand.Intn(16) - 8
}
bullet.CurrentPosition = new(gt2d.Vector2D)
bullet.LastPosition = new(gt2d.Vector2D)
bullet.CurrentPosition.X = boundary.Width() / 2
bullet.CurrentPosition.Y = boundary.Height() / 2
bullet.LastPosition.X = bullet.CurrentPosition.X
bullet.LastPosition.Y = bullet.CurrentPosition.Y
bullet.Rect = gt2d.Rect(bullet.CurrentPosition.X-5, bullet.CurrentPosition.Y-5, bullet.CurrentPosition.X+5, bullet.CurrentPosition.Y+5)
return bullet
}