/// <summary>
/// Creates all the initial game objects
/// </summary>
private void CreateGameObjects()
{
ActiveGameObjects = new List<GameObject>();
int index = 0;
foreach (PlayerInfo player in activePlayers)
{
//Create a Game Object for every active player
GameObject playerShip;
playerShip = new GameObject();
playerShip.Scale = new Vector3(0.25f, 0.25f, 0.25f);
playerShip.Yaw = 1.5f;
playerShip.Pitch = 0f;
playerShip.Roll = 1.5f;
playerShip.Health = 30;
playerShip.UpdateRotationByYawPitchRoll();
playerShip.Player_Information = player;
playerShip.Name = "Player Ship";
playerShip.shootingSound = soundBank.GetCue("missile");
playerShip.explosionSound = soundBank.GetCue("explosion");
Material shipMaterial = new Material();
shipMaterial.Diffuse = new Vector4(0, 0, 0, 1);
shipMaterial.SpecularPower = 10;
if (index == 0)
{
shipMaterial.Specular = Color.Red.ToVector4();
}
else
{
shipMaterial.Specular = Color.Green.ToVector4();
}
GeometryNode playerShipNode = new GeometryNode("Player Ship");
playerShipNode.Model = player.Player_Ship.Player_Ship_Model;
playerShipNode.Material = shipMaterial;
playerShip.Geometry = playerShipNode;
playerShipNode.AddToPhysicsEngine = true;
playerShipNode.Physics.Shape = ShapeType.Box;
scene.RootNode.AddChild(playerShip);
ActiveGameObjects.Add(playerShip);
if (index == 0)
{
playerShip.Translation = new Vector3(-25, 20, -100);
}
else if (index == 1)
{
playerShip.Translation = new Vector3(25,-25, -100);
playerShip.Pitch = 9.5f;
playerShip.UpdateRotationByYawPitchRoll();
}
index++;
}
}
/// <summary>
/// Updates the rotation of an object based on it's target position
/// </summary>
/// <param name="player"></param>
/// <param name="targetPosition"></param>
private void UpdateRotation(GameObject player, Vector3 targetPosition)
{
Matrix rotation = Matrix.CreateFromYawPitchRoll(player.Yaw, player.Pitch, player.Roll);
Vector3 pos = player.Translation + rotation.Backward;
double slope = findSlope(player.Translation.X,player.Translation.Y,pos.X,pos.Y);
double slopeDiff = findSlope(player.Translation.X, player.Translation.Y, targetPosition.X, targetPosition.Y);
float angleDirection = (float)Math.Atan(slope);
angleDirection = MathHelper.ToDegrees(angleDirection);
float angleTarget = (float)Math.Atan(slopeDiff);
angleTarget = MathHelper.ToDegrees(angleTarget);
if (pos.X < player.Translation.X && pos.Y > player.Translation.Y)
angleDirection += 180;
if (pos.X < player.Translation.X && pos.Y < player.Translation.Y)
angleDirection += 180;
if (pos.X > player.Translation.X && pos.Y < player.Translation.Y)
angleDirection += 360;
if (targetPosition.X < player.Translation.X && targetPosition.Y > player.Translation.Y)
angleTarget += 180;
if (targetPosition.X < player.Translation.X && targetPosition.Y < player.Translation.Y)
angleTarget += 180;
if (targetPosition.X > player.Translation.X && targetPosition.Y < player.Translation.Y)
angleTarget += 360;
if (angleTarget < 1)
angleTarget += 360;
if (angleDirection < 1)
angleDirection += 360;
if ( Math.Abs(angleDirection - angleTarget) < 5)
{
player.turnCounter = 0;
return;
}
else
{
if (player.turnCounter == 60 || player.turnCounter == -60)
{
player.turnCounter = 0;
}
if (player.turnCounter > 0)
{
player.Pitch += 0.1f;
player.turnCounter++;
}
else if ( player.turnCounter < 0)
{
player.Pitch -= 0.1f;
player.turnCounter--;
}
else if ( Math.Abs(angleDirection - angleTarget) <= 180.0f)
{
player.Pitch += 0.1f;
player.turnCounter++;
}
else
{
player.Pitch -= 0.1f;
player.turnCounter--;
}
}
player.UpdateRotationByYawPitchRoll();
}