// Laser's methods
// Fires a laser if the laser rate of 'flier' allows it, if 'flier' is a Boss, he fires twice more
protected void FireLaser(GameTime gameTime, ref TimeSpan prev, TimeSpan rate, IFlier flier)
{
// if we CAN fire a laser, we fire it
if (gameTime.TotalGameTime - prev > rate)
{
prev = gameTime.TotalGameTime;
AddLaser(flier,0f); // see below the process of spawning a laser
// Bosses are badasses and shoot three shots, at an angle
if (flier is BossEnemy)
{
AddLaser(flier, 3f);
AddLaser(flier, -3f);
}
}
}
// Handles the spawn of the laser and adding it to the active lasers lists
protected void AddLaser(IFlier flier, float shotDirection)
{
// declaration of locals variables
Texture2D loc_texture;
Vector2 loc_flierPosition;
Vector2 loc_laserPostion;
Laser laser;
// we set the laser position to the position of the flier
loc_flierPosition = flier.GetPosition();
loc_laserPostion = loc_flierPosition;
// each flier has it's offset to make the laser come out of the gun
Vector2 loc_laserFlier = flier.GetGunOffset();
loc_laserPostion += loc_laserFlier; // we adjust the laser position with the offset
// we spawn the laser, standard laser for the player
// boss-specific is handled in the FireLaser(), a bit of player tracking for the enemies
if ((flier is Player))
{
loc_texture = t2d_laserTexture;
laser = new Laser();
}
else if ((flier is BossEnemy))
{
loc_texture = t2d_enemyLaserTexture;
laser = new EnemyLaser(shotDirection);
}
else if ((flier is Enemy))
{
loc_texture = t2d_enemyLaserTexture;
// Enemies track the player's position and adjust aim very slightly
float a = 0f;
if (player.v2_playerPosition.Y < loc_flierPosition.Y) { a = -2f; }
else if (player.v2_playerPosition.Y > loc_flierPosition.Y) { a = 2f; }
laser = new EnemyLaser(a);
}
else { // DEFAULT because C# knows what is good better than us :-)
loc_texture = t2d_laserTexture;
laser = new Laser();
}
Animation laserAnimation = new Animation();
// initlize the laser animation
laserAnimation.Initialize(loc_texture, loc_flierPosition, 46, 16, 1, 30,
Color.White, 1f, true);
// init the laser
laser.Initialize(laserAnimation, loc_laserPostion);
// add the laser to the proper list
if(laser is EnemyLaser) {
list_enemiesLasers.Add(laser);
}
else {
list_lasers.Add(laser);
}
}
