/// <summary>
/// Loads all the gameobject in the level
/// </summary>
/// <param name="path">the level file path</param>
private void LoadLevelFromFile(string path)
{
//Stores the number of keys in th elevel
numKeys = 0;
numGems = 0;
//removes all the gameobjects from last level
gameObjects.Clear();
//stores all the lines in the file
string[] lines = File.ReadAllLines(path);
//loops over all the charachters
for (int r = 0; r < NUM_CELLS_HEIGHT; ++r)
{
for (int c = 0; c < NUM_CELLS_WIDTH; ++c)
{
//adds the corresponding gameobject
switch (lines[r][c])
{
case '0':
//save an addition refrence to the player before adding it
player = new Player(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH);
gameObjects.Add(player);
break;
case '1':
gameObjects.Add(new Wall(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH));
break;
case '2':
//Saves a refrance to the crate so it could subscribe to events
Crate crate = new Crate(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH);
//Check that there are no gems or keys above whenever crate moves
crate.CrateMove += cr =>
{
IEnumerable <GameObject> objectsAbove = gameObjects.Where(g => Helper.IsPointInOrOnRectangle(g.TopLeftGridPoint.ToVector2(), new Rectangle(cr.Box.Location - new Point(0, cr.Box.Height), cr.Box.Size)));
return(objectsAbove.Count() != 0 && (objectsAbove.First() is Gem || objectsAbove.First() is Key));
};
gameObjects.Add(crate);
break;
case '3':
//save the position of the flag
flagPos = new Point(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH);
break;
case '4':
gameObjects.Add(new Door(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH));
break;
case '5':
gameObjects.Add(new Spike(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH));
break;
case '6':
gameObjects.Add(new Gem(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH));
++numGems;
break;
case '7':
gameObjects.Add(new Key(c * CELL_SIDE_LENGTH, r * CELL_SIDE_LENGTH));
++numKeys;
break;
}
}
}
//subscribe to the crate event for colliding with gems and keys (add them to the player count)
gameObjects.OfType <Crate>().ToList().ForEach(c => c.CollideWithGem += () => player.AddGem());
gameObjects.OfType <Crate>().ToList().ForEach(c => c.CollideWithKey += () => player.AddKey());
//Notify Game of how many collectibles there are this level
KeysAndGemsCounted.Invoke(numKeys, numGems);
//add the 4 walls around the screem
gameObjects.AddRange(new[]
{
new Wall(-SCREEN_WALL_WIDTH, 0, SCREEN_WALL_WIDTH, HEIGHT),
new Wall(WIDTH, 0, SCREEN_WALL_WIDTH, HEIGHT),
new Wall(0, -SCREEN_WALL_WIDTH, WIDTH, SCREEN_WALL_WIDTH),
new Wall(0, HEIGHT, WIDTH, SCREEN_WALL_WIDTH)
});
//subscribe to the move and delete events of all the gameobjects
gameObjects.ForEach(g => g.MoveReady += gameObject => MoveGameObject(gameObject));
gameObjects.ForEach(g => g.DeleteReady += gameObject => gameObjects.Remove(gameObject));
//subscribe to the players hit spike event with a function that ends the level
player.HitSpike += () =>
{
//clears commands and pauses the game
commands = new Queue <char>();
GamePaused = true;
//Notify game that the player hit a spike
RunCompleteFailed.Invoke("The player hit a spike : press ENTER to try again.");
};
//subscribe to the players collect gem and key events (notify Game when happenes)
player.KeyCollected += nk => playerKeyCollected.Invoke(nk);
player.GemCollected += ng => playerGemCollected.Invoke(ng);
}
/// <summary>
/// Updates all the gameobjects in the level
/// </summary>
public void Update()
{
//If the game is paused dont update anything
if (GamePaused)
{
return;
}
//If all the objects are standing still and there is more commands left, run them
if (!commands.IsEmpty && gameObjects.All(g => g.IsStandingStill()))
{
//give player the next command and notify Game that the next command is being excecuted
player.LoadNextCommand(commands.Dequeue());
ExecutingNextCommand.Invoke();
//If the command just loaded is the last command check if the player won
if (commands.IsEmpty)
{
//pause the game
GamePaused = true;
//check if the player has reached the flag check if they collected all the gems
if (player.Box.Location == flagPos)
{
//if they did not collect all the gems then inform Game they failed the level for that reason
if (player.GemCount != numGems)
{
RunCompleteFailed.Invoke("You did not collect all the gems : press ENTER to try again.");
}
//the player won
else
{
//stop the timer
timer.Stop();
//Save the results for this level and update the final results
finalResult.LevelResults[curLevel - 1] = new LevelResult(timer.Elapsed.Milliseconds + numCommands * 100, timer.Elapsed.Seconds);
finalResult.TotalTime += finalResult.LevelResults[curLevel - 1].Time;
finalResult.TotalScore += finalResult.LevelResults[curLevel - 1].Score;
//check if that was the last level
if (curLevel == NUM_LEVELS)
{
//inform Game all levels complete and send it final reslts
AllLevelsComplete.Invoke(finalResult);
}
else
{
//inform Game that the level has been complete and send the correct level results
RunCompleteSuccess.Invoke(finalResult.LevelResults[curLevel - 1]);
//go to the next level and indicate that a new level is starting
++curLevel;
startingNewLevel = true;
}
}
}
//the player did not reach the goal
else
{
//Inform Game that the level did not reach the goal
RunCompleteFailed.Invoke("A'w Shuc'ks Buddy ol Pal! Failed to reach goal : press ENTER to try again.");
}
}
}
//Update all the gameobjects
gameObjects.ForEach(g => g.Update());
//Try to move all the gameobjects (while taking collision into account)
MoveGameObjects();
}
