static void Main()
{
Console.CursorVisible = false;
// Instanciate Snake with 3 bodyparts
Snake snake = new Snake(3);
// Take control of it.
InputHandler.Instance.SetControl(snake);
// Instanciate apple
Apple apple = new Apple(Global.defaultAppleTexture);
/* Tell the apple to monitor the snakes
position so it can respawn "safely". */
apple.AddSnakeMonitor(snake);
/* Spawn the apple. */
apple.Respawn(snake.body.GetOccupiedPositions());
/* Start the game loop */
Stopwatch intervalClock = new Stopwatch();
intervalClock.Start();
while(!Global.isGameFinished)
{
// Update input
InputHandler.Instance.Update();
// Enforce update interval
if (intervalClock.ElapsedMilliseconds < Global.updateInterval)
{
continue;
}
/* If game is paused, don't update
* the rest of the game. Just the input */
if (Global.isGamePaused)
{
continue;
}
// Update game objects
snake.Update();
apple.Update();
// If Snake eats the apple...
if (snake.position.Equals(apple.position)){
// Check if there is room for more apples on the gameboard.
if (snake.body.length == Global.maxApples)
{
Global.isGameFinished = true;
continue;
}
// Then grow the snake.
snake.body.Grow();
// Reincarnate the apple
apple.Respawn(snake.body.GetOccupiedPositions());
}
/* Check the status of the snake */
if (!snake.alive)
{
Global.isGameFinished = true;
}
// Check if the snake has moved out of bounds.
if (snake.position.X < 0 || snake.position.Y < 0 ||
snake.position.X >= Global.windowWidth ||
snake.position.Y >= Global.windowHeight
)
{
Global.isGameFinished = true;
}
// Check if the game is finished before drawing anything.
if (Global.isGameFinished)
{
continue;
}
// Draw apple and snake
apple.Draw();
snake.Draw();
// Restart update interval-clock before next update.
intervalClock.Restart();
}
}