void OnTriggerEnter2D(Collider2D collider)
{
Laser missile = collider.gameObject.GetComponent <Laser>();
Meteor meteor = collider.gameObject.GetComponent <Meteor>();
Powerup powerup = collider.gameObject.GetComponent <Powerup>();
// Laser was fired and collides with player
if (missile)
{
// If shield is hit, negate the damage and destroy the missile
if (Powerup.GetShield())
{
ShieldDown();
missile.Hit();
}
// Else take damage
else
{
health -= missile.GetDamage();
missile.Hit();
HealthCheck();
}
}
// Meteor collides with player
if (meteor)
{
// If shield is hit, negate the damage and destroy the meteor
if (Powerup.GetShield())
{
ShieldDown();
meteor.Hit();
}
// Else take damage
else
{
health -= meteor.GetDamage();
meteor.Hit();
HealthCheck();
}
}
// If player collects a shield powerup
if (powerup && collider.gameObject.name.Contains("shieldPowerup"))
{
ShieldUp(powerup);
}
// If player collects a speed powerup
if (powerup && collider.gameObject.name.Contains("speedPowerup"))
{
SpeedBoostOn(powerup);
}
}
void ShieldUp(Powerup powerup)
{
// Only display shield image if there isn't one active already (prevents duplicates)
if (!Powerup.GetShield())
{
shieldImage = Instantiate(shieldPrefab, transform.position, Quaternion.identity) as GameObject;
}
Powerup.SetShield(true);
AudioSource.PlayClipAtPoint(shieldUp, transform.position);
powerup.Collected();
}
void Update()
{
// Restrict player to game space
float newx = Mathf.Clamp(transform.position.x, xmin, xmax);
transform.position = new Vector3(newx, transform.position.y, transform.position.z);
// Move left and right
if (Input.GetKey(KeyCode.LeftArrow))
{
transform.position += Vector3.left * speed * Time.deltaTime;
}
else if (Input.GetKey(KeyCode.RightArrow))
{
transform.position += Vector3.right * speed * Time.deltaTime;
}
// If space is held down, fire lasers at a set rate
// "Fire" refers to the method above via string
if (Input.GetKeyDown(KeyCode.Space))
{
InvokeRepeating("Fire", 0.000001f, fireRate);
}
// If space is released, cease firing lasers
if (Input.GetKeyUp(KeyCode.Space))
{
CancelInvoke("Fire");
}
// If speed boost expired, set speed and fire rate back to normal
if (Powerup.GetSpeedBoost() && Time.time - globalTime >= 20f)
{
SpeedBoostOff();
}
// Set position of shield to be the same as the player
if (Powerup.GetShield())
{
shieldImage.transform.position = transform.position;
}
}