bool CheckParticleCollision(Collision sprite1, ParticleManager particles)
{
for (int particle = 0; particle < particles.particles.Count; particle++)
{
sprite2 = particles.GetCollider(particle);
if (sprite1.visiblePixelCollision(sprite2))
{
particles.Kill(particle);
particles.Update();
particle--;
return(true);
}
}
return(false);
}
void UpdateList(List <SpriteStripManager> list, SpriteStripManager item, GameTime gameTime)
{
for (int i = 0; i < list.Count; i++)
{
int hit = 0;
if (list[i].myID == 2)
{
// if the item in the list is an alien it reduces the shotcooldown and allows the ai to control it.
list[i].shotcooldown -= (float)gameTime.ElapsedGameTime.TotalSeconds;
if (myShip.Scale == 1)
{
ai.Think(list[i], myShip, controller, EnemyBulletParticles, soundlistinstance[0]);
}
}
controller.Update(list[i]);
list[i].Update();
sprite1 = list[i].GetCollider();
if (list[i].isCollectable == false)
{
//these checks are for when the player hits objects with it's bullets
for (int particle = 0; particle < PlayerBulletParticles.particles.Count; particle++)
{
sprite2 = PlayerBulletParticles.GetCollider(particle);
if (CheckParticleCollision(sprite1, PlayerBulletParticles))
{
//create 2 small asteroids when a large one is destroyed
if (list[i].Scale >= 0.5 && list[i].myID == 1)
{
spawner.SpawnChildren(item, list, asteroidIdle, i, (int)Difficulty.difficulty / 2, ranGen);
numAsteroid += (int)Difficulty.difficulty / 2;
}
if (list[i].Scale > 0.5 && list[i].myID == 2)
{
//spawns 0 aliens at difficulties 0-2, 1 alien from 3-5 and 2 aliens on the other difficulties when an alien is destroyed
spawner.SpawnChildren(item, list, alienIdle, i, (int)Difficulty.difficulty / 3, ranGen);
numAliens += (int)Difficulty.difficulty / 3;
}
//remove asteroid when hit by player shot
GenerateParticleEffects(list[i]);
if (list[i].myID == 1)
{
if (list[i].Scale == 1)
{
soundlist[1].Play();
}
else if (list[i].Scale == 0.5)
{
soundlist[2].Play();
}
else
{
soundlist[3].Play();
}
hud.score += 50;
extralifecounter += 50;
numAsteroid--;
}
else
{
numAliens--;
hud.score += 100;
extralifecounter += 100;
soundlist[4].Play();
}
list.RemoveAt(i);
hit = 1;
}
}
}
//if the player has been hit before than the following is skipped
if (hit == 0)
{
//these checks are for when the player collides with other objects.
if (timesincelasthit > 2 || list[i].isCollectable)
{
sprite2 = myShip.GetCollider();
if (sprite1.visiblePixelCollision(sprite2))
{
if (list[i].Scale >= 0.5 && list[i].myID == 1)
{
spawner.SpawnChildren(item, list, asteroidIdle, i, (int)Difficulty.difficulty / 2, ranGen);
numAsteroid += (int)Difficulty.difficulty / 2;
}
if (list[i].Scale > 0.5 && list[i].myID == 2)
{
//spawns 0 aliens at difficulties 0-2, 1 alien from 3-5 and 2 aliens on the other difficulties when an alien is destroyed
spawner.SpawnChildren(item, list, alienIdle, i, (int)Difficulty.difficulty / 3, ranGen);
numAliens += (int)Difficulty.difficulty / 3;
}
//remove asteroid when hit by player shot
if (list[i].myID == 1)
{
numAsteroid--;
hud.score += 25;
extralifecounter += 25;
if (list[i].Scale == 1)
{
soundlist[1].Play();
}
else if (list[i].Scale == 0.5)
{
soundlist[2].Play();
}
else
{
soundlist[3].Play();
}
}
else if (list[i].myID == 2)
{
numAliens--;
hud.score += 50;
extralifecounter += 50;
soundlist[4].Play();
}
else
{
numStars--;
hud.score += 100;
extralifecounter += 50;
soundlist[5].Play();
}
if (!list[i].isCollectable)
{
//if the item collided with is not a collectable then the player is destroyed.
GenerateParticleEffects(list[i]);
GenerateParticleEffects(myShip);
hud.lives--;
myShip.Scale = 0;
timesincelasthit = 0;
soundlist[1].Play();
}
list.RemoveAt(i);
}
}
}
}
}
void UpdateGameplay(GameTime gameTime)
{
//if (soundlistinstance[10].State != SoundState.Playing)
//{
// soundlistinstance[10].Volume = 0.1f;
// soundlistinstance[10].IsLooped = true;
// soundlistinstance[10].Play();
//}
//main gameplay loop for each gametype
elapsedtime += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (CheckObjectiveComplete())
{
RemoveEnemies();
if (hud.objective == "")
{
InitializeNewGame();
}
else
{
myPortal.Scale = 1;
}
}
if (extralifecounter > 10000)
{
extralifecounter = 0;
hud.lives++;
soundlist[6].Play();
}
if (hud.lives <= 0)
{
//soundlistinstance[10].Stop();
_state = GameState.HighScores;
RemoveEnemies();
Update(gameTime);
}
Respawn();
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
if (myShip.Scale == 1)
{
//if the ships scale isn't one that means that the player is currently dead so inputs aren't needed.
input.Update();
if (input.UpdateThumbStickAngle() != 0)
{
controller.RotateTo(myShip, input.UpdateThumbStickAngle());
}
if (input.IsKeyDown(Keys.Left))
{
controller.Rotate(myShip, -0.05f);
}
if (input.IsKeyDown(Keys.Right))
{
controller.Rotate(myShip, 0.05f);
}
if (input.IsKeyDown(Keys.Up) || input.IsButtonDown(Buttons.RightTrigger))
{
soundlistinstance[6].IsLooped = true;
soundlistinstance[6].Play();
myShip.setCurrentAction("Moving");
controller.Move(myShip);
}
else if (input.isMouseButtonDown(1))
{
soundlistinstance[6].IsLooped = true;
soundlistinstance[6].Play();
myShip.setCurrentAction("Moving");
Vector2 mouse = input.getMousePos();
float angle = (float)((Math.Atan2(mouse.Y - myShip.YPos, mouse.X - myShip.XPos) + MathHelper.Pi / 2));
controller.RotateTo(myShip, angle);
controller.Move(myShip);
}
else
{
soundlistinstance[6].Pause();
myShip.setCurrentAction("Idle");
controller.Stop(myShip);
}
if (input.isMouseButtonDown(2))
{
Vector2 mouse = input.getMousePos();
float angle = (float)((Math.Atan2(mouse.Y - myShip.YPos, mouse.X - myShip.XPos) + MathHelper.Pi / 2));
controller.RotateTo(myShip, angle);
}
if (input.WasKeyPressed(Keys.Space) || input.WasButtonPressed(Buttons.A))
{
controller.Shoot(myShip, PlayerBulletParticles, soundlistinstance[0]);
}
else if (input.isMouseButtonClick(2))
{
Vector2 mouse = input.getMousePos();
float angle = (float)((Math.Atan2(mouse.Y - myShip.YPos, mouse.X - myShip.XPos) + MathHelper.Pi / 2));
controller.RotateTo(myShip, angle);
controller.Shoot(myShip, PlayerBulletParticles, soundlistinstance[0]);
}
}
controller.Update(myShip);
myShip.Update();
PlayerBulletParticles.Update();
EnemyBulletParticles.Update();
ParticleEffects.Update();
//this causes the game to pause for 2 seconds before starting each time it changes gametype
if (elapsedtime > 2)
{
if (hud.objective != "DESTROY ALL ASTEROIDS" && hud.objective != "DESTROY ALL ALIENS")
{
if (elapsedtime % (10 - Difficulty.difficulty) < gameTime.ElapsedGameTime.TotalSeconds)
{
//spawns asteroids every 10 seconds to begin with and increases the spawning rate as time goes on
spawner.NewItem(newobject, objectlist, asteroidIdle, 1, ranGen);
numAsteroid++;
if (hud.objective == "")
{
//everytime an asteroid is spawned in the tutorial the difficulty increases
Difficulty.difficulty++;
}
}
if (elapsedtime % (12 - Difficulty.difficulty) < gameTime.ElapsedGameTime.TotalSeconds)
{
//spawns aliens every 12 seconds to begin with and increases the spawning rate as time goes on
spawner.NewItem(newobject, objectlist, alienIdle, 2, ranGen);
numAliens++;
if (ranGen.Next(1, 4) > 3)
{
//25% chance of spawning a small alien.
objectlist[objectlist.Count - 1].Scale = 0.5f;
}
}
}
timesincelasthit += (float)gameTime.ElapsedGameTime.TotalSeconds;
UpdateList(objectlist, newobject, gameTime);
sprite1 = myShip.GetCollider();
if (timesincelasthit > 2)
{
//the player is invincble for 2 seconds after being hit
if (CheckParticleCollision(sprite1, EnemyBulletParticles))
{
GenerateParticleEffects(myShip);
hud.lives--;
myShip.Scale = 0;
timesincelasthit = 0;
soundlist[2].Play();
}
}
if (myPortal.Scale == 1)
{
//after the objective is completed a portal spawns and sucks the player into it.
if (lastPlayed == 7 && soundlistinstance[7].State == SoundState.Stopped)
{
soundlistinstance[8].Play();
lastPlayed = 8;
}
else if (soundlistinstance[8].State == SoundState.Stopped)
{
soundlistinstance[7].Play();
lastPlayed = 7;
}
controller.Move(myShip, (float)(Math.Atan2(myShip.YPos - myPortal.YPos, myShip.XPos - myPortal.XPos) + MathHelper.Pi / 2), -1);
myPortal.Update();
sprite2 = myPortal.GetCollider();
if (sprite1.visiblePixelCollision(sprite2))
{
soundlistinstance[8].Stop();
myPortal.Scale = 0;
InitializeNewGame();
}
}
}
if (hud.objective == "DESTROY ALL ALIENS")
{
hud.objectivenumber = numAliens;
}
if (hud.objective == "DESTROY ALL ASTEROIDS")
{
hud.objectivenumber = numAsteroid;
}
if (hud.objective == "COLLECT")
{
hud.objectivenumber = numStars;
}
hud.Update(gameTime);
}
