/// <summary>
/// Constructor for platform
/// </summary>
/// <param name="a_world"></param>World in which the platform is created and drawn
/// <param name="a_leftPoint"></param>Left end point of the platform
/// <param name="a_rightPoint"></param>Right end point of the platform
/// <param name="a_texture"></param>Platform texture
public Platform(World a_world, Vector2 a_leftPoint, Vector2 a_rightPoint, Texture2D a_texture)
{
m_world = a_world;
m_leftPoint = a_leftPoint;
m_rightPoint = a_rightPoint;
// Initializing platform position and dimensions
float width = MathX.LineLength(a_leftPoint, a_rightPoint);
Vector2 midPoint = MathX.Midpoint(a_leftPoint, a_rightPoint);
m_sprite = new Sprite(a_world, a_texture, new Vector2(width, 10), 0.0f, midPoint);
m_rotation = MathX.GetAngleBetween(a_leftPoint, a_rightPoint) * (float)(Math.PI / 180);
m_sprite.m_body.Rotation = m_rotation;
m_sprite.m_body.BodyType = BodyType.Static;
m_sprite.m_body.UserData = "platform";
m_currentState = PlatformState.ROOF;
// Initializing normal vector
Vector2 difference = a_leftPoint - a_rightPoint;
m_normalVector = new Vector2(-difference.Y, difference.X);
m_normalVector.Normalize();
m_connection = new Sprite(a_world, ContentLibrary.circleTexture, 5, 0.0f, a_leftPoint);
m_connection.m_body.BodyType = BodyType.Static;
m_connection2 = new Sprite(a_world, ContentLibrary.circleTexture, 5, 0.0f, a_rightPoint);
m_connection2.m_body.BodyType = BodyType.Static;
//m_connection.m_body.UserData = "platform";
}
/// <summary>
/// Updates the turret tracking and shooting
/// </summary>
/// <param name="a_gameTime"></param>
public void Update(GameTime a_gameTime)
{
Vector2 projection;
float projectionLength = 0;
projectionLength = MathX.LineLength(m_player.m_body.Position, m_top.m_body.Position) / 3.5f;
projection = (Vector2.Normalize(-m_state.m_world.Gravity) * projectionLength) + m_player.m_body.Position;
m_angle = projection - m_top.m_body.Position;
float rot = (float)(Math.Atan2(m_angle.Y, m_angle.X) - (Math.PI / 2));
if (rot > 2 * Math.PI)
{
rot = 0;
}
m_top.m_body.Rotation = rot;
m_cooldown -= (float)a_gameTime.ElapsedGameTime.TotalSeconds;
if (m_cooldown >= 0)
{
m_cooldown -= (float)a_gameTime.ElapsedGameTime.TotalSeconds;
}
else
{
//check distance between turret and player
if (MathX.LineLength(m_player.m_body.Position, m_top.m_body.Position) < 3)
{
//check if the target is within rotation range
float upperRange = m_base.m_body.Rotation + (float)(Math.PI / 3);
float lowerRange = m_base.m_body.Rotation - (float)(Math.PI / 3);
if (upperRange > (float)(Math.PI / 2) && m_top.m_body.Rotation < 0)
{
upperRange -= 2 * (float)Math.PI;
lowerRange -= 2 * (float)Math.PI;
}
if (lowerRange < (float)(-3 * (Math.PI / 2)) && m_top.m_body.Rotation > 0)
{
lowerRange += 2 * (float)Math.PI;
upperRange += 2 * (float)Math.PI;
}
if (m_top.m_body.Rotation > lowerRange && m_top.m_body.Rotation < upperRange)
{
List <Fixture> collision = m_state.m_world.RayCast(ConvertUnits.ToSimUnits(m_top.Position), m_player.m_body.Position);
Fixture platformFound = collision.Find(x => (string)x.Body.UserData == "platform");
if (platformFound == null)
{
Shoot(m_state.m_world);
m_cooldown = 2;
}
}
}
}
}
