/// <summary>
/// This method draws the Shell as a small white circle.
/// </summary>
public override void Step()
{
for (int i = 0; i < 10; i++)
{
x += xVelocity;
y += yVelocity;
x += game.WindSpeed() / 1000.0f;
//if we go out of bounds, cancel the whole thing
if (x > Battlefield.WIDTH || x < 0 || y > Battlefield.HEIGHT)
{
game.CancelEffect(this);
}
// if we detect a collision hit the tank
else if (game.CheckCollidedTank(x, y))
{
player.ReportHit(x, y); //used for the computer player
explosion.Detonate(x, y);
game.AddWeaponEffect(explosion);
game.CancelEffect(this);
return;
}
yVelocity += gravity;
}
}
/// <summary>
/// moves the given projectile across the battelfeild
/// </summary>
public override void Tick()
{
// each tick occures ten times in a frame
//loop procedure 10 times
for (int Loop = 0; Loop < 10; Loop++)
{
// increase the location of bullet by velocity
bulletX = bulletX + velocityX;
bulletY = bulletY + velocityY;
// move the bullet according to the current wind
// get windspeed
float wind = this.currrentGame.GetWind() / 1000.0f;
// move bullet's horizontal postion by adding the wind
bulletX = bulletX + (wind);
//check to see if bullet has moved outside game bounds
if (bulletX > Battlefield.WIDTH | bulletY > Battlefield.HEIGHT | bulletX < 0)
{
//destroy bullet as its gone too far
this.currrentGame.RemoveWeaponEffect(this);
return; //exit function as bullet doesnt exist anymore
}
else // bullet inside bounds
{
// check to see if a bullet has hit a tank or collision
if (this.currrentGame.CheckCollidedTank(bulletX, bulletY))
{
//record the hit if the owner's tank isnt at location
if (!CheckPlayerOwner(bulletOwner, (int)bulletX))
{
bulletOwner.ReportHit(bulletX, bulletY);
}
//cause explosion
bulletExplosion.Explode(bulletX, bulletY);
//add the explosion to effects
this.currrentGame.AddEffect(bulletExplosion);
//destroy this bullet
this.currrentGame.RemoveWeaponEffect(this);
return; // exit function as bullet doesnt exist anymore
}
}
// calucalte fall due to gravity on next frame
velocityY = velocityY + bulletGravity;
}//end loop
// function end
}
/// <summary>
/// moves the given projectile according to its angle, power, gravity and the wind.
/// </summary>
public override void Tick()
{
// each tick occures ten times in a frame
//loop procedure 10 times
for (int Loop = 0; Loop < 10; Loop++)
{
// increase the location of bullet by velocity
bulletX = bulletX + velocityX;
bulletY = bulletY + velocityY;
// move the bullet according to the current wind
// get windspeed
float wind = this.currrentGame.GetWind() / 1000.0f;
// move bullet's horizontal postion by adding the wind
bulletX = bulletX + (wind);
//check to see if bullet has moved outside game bounds
if (bulletX > Battlefield.WIDTH | bulletY > Battlefield.HEIGHT | bulletX < 0)
{
//destroy bullet as its gone too far
this.currrentGame.RemoveWeaponEffect(this);
return; //exit function as bullet doesnt exist anymore
}
else // bullet inside bounds
{
// check to see if a bullet has hit a tank or collision
if (this.currrentGame.CheckCollidedTank(bulletX, bulletY))
{
//record the hit if the owner's tank isnt at location
if (!CheckPlayerOwner(bulletOwner, (int)bulletX))
{
bulletOwner.ReportHit(bulletX, bulletY);
}
//cause explosion
bulletExplosion.Explode(bulletX, bulletY);
//add the explosion to effects
this.currrentGame.AddEffect(bulletExplosion);
//destroy this bullet
this.currrentGame.RemoveWeaponEffect(this);
//create a new bullet and explosion for the inner shell
//add it to the environment
InnerShell();
return; // exit function as bullet doesnt exist anymore
}
}
// calucalte fall due to gravity on next frame
velocityY = velocityY + bulletGravity;
////work out the new bullet angle
//// in the constructor we have a formula to work out the velocity from the angle
//// to find the angle we just reverse the formula
//// velocityY = Math.Sin(angleRadians) * -bulletPower
//// velocityY/-bulletPower = Math.Sin(angleRadians)
//// Math.Asin(velocityY/-bulletPower) = angleRadians
////now we can get the radians on the angle for the bullet
//bulletAngle =-1f*(float)Math.Asin( (Math.Abs(velocityY) / bulletPower)) ;
//// use the radians to get the using the formula in the constructor
//// radians = (90 - angle) * (float)Math.PI / 180
//// radians/(Math.PI/180) = 90-angle
//// (radians/(Math.PI/180))-90 = -angle
////-1 * ( (radians/ (Math.PI/180) ) -90 ) = angle
//bulletAngle = -1f * ((bulletAngle / (float)(Math.PI / 180f)) - 90f);
//end loop
}
// function end
}