/// <summary>
/// Check if enemy bullet collides with entities
/// </summary>
/// <param name="scene">scene</param>
void CheckEnemyBullet(MainScene scene)
{
// Check if bullet is enemy bullet
if (Collider.Tags[0] == (int)Tags.Enemy)
{
// Check if bullet collides with player tags
if (Collider.CollideEntity(X, Y, Tags.Player) != null)
{
// Check if bullet collides with player
if (!(Collider.CollideEntities(X, Y, Tags.Player)[0].GetType() == typeof(Bullet)))
{
if (scene.player.Alive)
{
RemoveSelf();
scene.player.playerLives -= 1;
scene.player.Die();
scene.livesLeftTxt.String = scene.player.playerLives.ToString();
scene.livesLeftTxt.Refresh();
}
// Check if enemy bullet collides with player bullet
else
{
RemoveSelf();
}
}
}
}
}
/// <summary>
/// Load enemies from file.
/// Loads from "/levels/", you only need to put "level1.xml"
/// </summary>
/// <param name="file">file name to load</param>
public static void LoadEnemies(string file)
{
MainScene scene = Program.game.GetScene <MainScene>();
// Open document
XmlDocument doc = new XmlDocument();
doc.Load("levels/" + file);
// Current enemy position to load
Vector2 CurPos = new Vector2(scene.PlayPosition.X, scene.PlayPosition.Y);
foreach (XmlElement node in doc.DocumentElement.ChildNodes)
{
// Create new enemy and add to scene
Enemy enemy = AllEnemies[node.GetAttribute("type")]();
enemy.Position = CurPos;
scene.Add(enemy);
// Set enemy position
CurPos.X += EnemySize;
if (CurPos.X > 420)
{
CurPos.X = scene.PlayPosition.X;
CurPos.Y += EnemySize;
}
}
}
/// <summary>
/// Handles player movement
/// </summary>
void UpdateMovement()
{
MainScene scene = Program.game.GetScene <MainScene>();
if (Alive)
{
// Check if player is moving left
if (Input.KeyDown(Key.A) || Input.KeyDown(Key.Left))
{
X -= MoveSpeed;
}
// Check if player is moving right
if (Input.KeyDown(Key.D) || Input.KeyDown(Key.Right))
{
X += MoveSpeed;
}
// Check if player is shooting
if (Input.KeyDown(Key.Space) && !bullet.Visible)
{
Shoot();
}
}
// Check if player is in play area
if (X < scene.PlayPosition.X)
{
X = scene.PlayPosition.X;
}
else if (X > scene.PlayPosition.X + scene.PlayWidth.X)
{
X = scene.PlayPosition.X + scene.PlayWidth.X;
}
}
/// <summary>
/// Called every frame
/// </summary>
public override void Update()
{
base.Update();
Ressurrection.Update();
if (!Alive && Ressurrection.AtMax)
{
MainScene scene = Program.game.GetScene <MainScene>();
Alive = true;
RemoveGraphic(playerDieImage);
AddGraphic(playerImage);
scene.player.SetPosition(new Vector2(scene.PlayPosition.X + scene.PlayWidth.X,
scene.PlayPosition.Y + scene.PlayWidth.Y));
}
UpdateMovement();
//If playerLives are 0, then switch to highscore screen
if (playerLives == 0)
{
Game.SwitchScene(new HighScoresScene());
}
}
/// <summary>
/// class used for the player
/// </summary>
public Player()
{
MainScene scene = Program.game.GetScene <MainScene>();
// Set position
SetPosition(new Vector2(scene.PlayPosition.X + scene.PlayWidth.X,
scene.PlayPosition.Y + scene.PlayWidth.Y));
// Set image
AddGraphic(playerImage);
// Add collider
BoxCollider Collider = new BoxCollider(30, 30, Tags.Player);
AddCollider(Collider);
// Initialize bullet
Image playerBullet = new Image("Assets/playerBullet.png");
BoxCollider bulletCollider = new BoxCollider(playerBullet.Width, playerBullet.Height, Tags.Player);
bullet = new Bullet(-6.0f, new Vector2(0, 0), bulletCollider);
bullet.Visible = false;
bullet.Collidable = false;
bullet.AddGraphic(playerBullet);
scene.Add(bullet);
}
/// <summary>
/// Check if bullet collides with entities.
/// </summary>
void CheckBulletCollision()
{
MainScene scene = Program.game.GetScene <MainScene>();
CheckPlayerBullet(scene);
CheckEnemyBullet(scene);
CheckBarricade(scene);
CheckUfo(scene);
}
/// <summary>
/// Check if bullet collides with ufo.
/// </summary>
/// <param name="scene">scene</param>
void CheckUfo(MainScene scene)
{
UFO ufo = (UFO)Collider.CollideEntity(X, Y, Tags.Ufo);
// If collidable is ufo then removes it
if (ufo != null)
{
ufo.Die();
scene.player.ScoreAmount += ufo.Score;
scene.player.bullet.Visible = false;
scene.player.bullet.Collidable = false;
}
}
/// <summary>
/// Reads XML and creates HighScore and HighScoreLeaderboard with it
/// </summary>
/// <returns>HighScore values</returns>
public static string MainScreenXML()
{
MainScene scene = (MainScene)Program.game.FirstScene;
//Loads in XML
XmlDocument xmlDoc = new XmlDocument();
if (!System.IO.File.Exists("savefile.xml"))
{
XmlElement root = xmlDoc.CreateElement("leaderboard");
xmlDoc.AppendChild(root);
}
else
{
xmlDoc.Load("savefile.xml");
}
var xmlnodes = xmlDoc.DocumentElement.ChildNodes;
//Gets the score value from the "score" attribute
int curScore = 0;
if (xmlnodes.Count >= 1)
{
if (xmlnodes[0].Attributes["score"].Value != "")
{
curScore = Int32.Parse(xmlnodes[0].Attributes["score"].Value);
}
}
// TODO: if score is 0 then it throws error
//Checks if the attributes are empty, if not, then curscore gets highest score value.
for (int i = 0; i < xmlnodes.Count; i++)
{
if (xmlnodes[i].Attributes["score"].Value != "")
{
if (Int32.Parse(xmlnodes[i].Attributes["score"].Value) > curScore)
{
if (xmlnodes[i].Attributes["name"].Value != "")
{
curScore = Int32.Parse(xmlnodes[i].Attributes["score"].Value);
}
}
}
}
//Returns the score as a string
return(curScore.ToString());
}
//Sets a random timer when UFO appears
public UFO()
{
Random rnd = new Random();
MainScene scene = Program.game.GetScene <MainScene>();
AppearTimer = new AutoTimer(rnd.Next(1000, 2000));
if (Enemy.hasMoved)
{
AppearTimer.Start();
}
BoxCollider collider = new BoxCollider(24, 24, Tags.Ufo);
Visible = false;
Collidable = false;
Score = rnd.Next(0, 3) * 50;
AddCollider(collider);
AddGraphic(EnemyImage);
}
/// <summary>
/// Handles enemy movement.
/// </summary>
void UpdateMovement()
{
MainScene scene = Program.game.GetScene <MainScene>();
List <Enemy> enemies = Scene.GetEntities <Enemy>();
SetPosition(Position + MoveDir);
// Check if enemy has moved 24p in Y axis, if true moves them in the X axis
if (HeightToMove <= 0)
{
MoveDir = NextMoveDir;
HeightToMove = 24;
hasMoved = true;
}
// Check if enemy is on the right side of the screen, if true moves them lower
if (Position.X > scene.GetPlayArea().X)
{
SetPosition(Position - MoveDir);
MoveDir = new Vector2(0.0f, MoveSpeed);
NextMoveDir = new Vector2(-1.0f * MoveSpeed, 0.0f);
}
// Check if enemy is on the left side of the screen, if true moves them lower
if (Position.X < scene.PlayPosition.X)
{
SetPosition(Position - MoveDir);
MoveDir = new Vector2(0.0f, MoveSpeed);
NextMoveDir = new Vector2(1.0f * MoveSpeed, 0.0f);
}
// Check if enemy is in the end of the level, if true ends game
if (Position.Y >= scene.GetPlayArea().Y - 100)
{
Game.SwitchScene(new HighScoresScene());
}
// Moves enemy
HeightToMove -= MoveDir.Y / enemies.Count;
}
/// <summary>
/// Check if bullet collides with barricade.
/// </summary>
/// <param name="scene">scene</param>
void CheckBarricade(MainScene scene)
{
Barricade barricade = (Barricade)Collider.CollideEntity(X, Y, Tags.Barricade);
if (barricade != null)
{
// Check if player bullet hits barricade
if (Collider.Tags[0] == (int)Tags.Player)
{
barricade.TakeDamage();
Visible = false;
Collidable = false;
}
// Check if enemy bullet hits barricade
else
{
barricade.TakeDamage();
RemoveSelf();
}
}
}
static void Main(string[] args)
{
// Creates game window
game = new Game("Space Invader", 800, 600, 60, false);
game.Color = Color.Black;
FreeConsole();
// Creates game scene
MainScene scene = new MainScene();
game.AddScene(scene);
var a = game.Scenes;
scene.Initialize();
//Change window variables
game.WindowResize = false;
game.SetIcon("Assets/windowPicture.png");
// Starts the game
game.Start();
}
/// <summary>
/// Check if player bullet collides with entities.
/// </summary>
/// <param name="scene">scene</param>
void CheckPlayerBullet(MainScene scene)
{
// Check if bullet is player bullet
if (Collider.Tags[0] == (int)Tags.Player)
{
// Check if bullet collides with player tags
if (Collider.CollideEntity(X, Y, Tags.Enemy) != null)
{
// Check if bullet hits bullet
if ((Collider.CollideEntities(X, Y, Tags.Enemy)[0].GetType() == typeof(Bullet)))
{
Collider.CollideEntities(X, Y, Tags.Enemy)[0].RemoveSelf();
Visible = false;
Collidable = false;
}
// Check if bullet hits enemy
else
{
Enemy enemy = (Enemy)Collider.CollideEntities(X, Y, Tags.Enemy)[0];
enemy.RemoveSelf();
Visible = false;
Collidable = false;
if (scene.GetEntities <Enemy>().Count <= 1)
{
scene.NextLevel();
}
scene.player.ScoreAmount += enemy.Score;
scene.curScoreTxt.String = scene.player.ScoreAmount.ToString();
Program.curScoreTxt = scene.player.ScoreAmount.ToString();
scene.curScoreTxt.Refresh();
}
}
}
}
/// <summary>
/// Called to initialize the game
/// Note: must be added to Game.FirstScene before calling
/// </summary>
public void Initialize()
{
OnBegin = delegate
{
Enemy.Initialize();
Barricade.Initialize();
MainScene scene = Program.game.GetScene <MainScene>();
Ufo = new UFO();
Program.game.GetScene <MainScene>().Add(Ufo);
// Create player and add to scene
player = new Player();
Add(player);
// Gametext for the entire game pretty much
#region gameText
var background = new Image("Assets/background.png");
background.Alpha = 0.4f;
scene.AddGraphic(background);
//Setting a default config file for the RichText to use
var txtConfig = new RichTextConfig()
{
TextAlign = TextAlign.Center,
CharColor = Color.Green,
FontSize = 18,
SineAmpX = 1,
SineAmpY = 2,
SineRateX = 1,
Font = new Font("Assets/VCR_OSD_MONO.ttf"),
};
// Writing the text graphics and setting position
var livesLeftTxtLabel = new RichText("Lives", txtConfig);
livesLeftTxtLabel.SetPosition(50, 16);
scene.livesLeftTxt = new RichText(scene.player.playerLives.ToString(), txtConfig);
scene.livesLeftTxt.Name = "livesLeftTxt";
scene.livesLeftTxt.SetPosition(70, 32);
var highScoreTxtLabel = new RichText("Highscore", txtConfig);
highScoreTxtLabel.SetPosition(350, 15);
highScoreTxt = new RichText(ReadXML.MainScreenXML(), txtConfig);
highScoreTxt.Name = "highScoreTxt";
highScoreTxt.SetPosition(380, 30);
var curScoreTxtLabel = new RichText("Score", txtConfig);
curScoreTxtLabel.SetPosition(650, 15);
scene.curScoreTxt = new RichText(scene.player.ScoreAmount.ToString(), txtConfig);
scene.curScoreTxt.Name = "curScoreTxt";
scene.curScoreTxt.SetPosition(670, 32);
// Adds Graphic to Scene
scene.AddGraphic(livesLeftTxtLabel);
scene.AddGraphic(highScoreTxtLabel);
scene.AddGraphic(curScoreTxtLabel);
scene.AddGraphic(scene.livesLeftTxt);
scene.AddGraphic(scene.highScoreTxt);
scene.AddGraphic(scene.curScoreTxt);
#endregion gameText
};
}
