public TanksOnAHeightmapGame()
{
graphics = new GraphicsDeviceManager(this);
device = GraphicsDevice;
Content.RootDirectory = "Content";
music = Content.Load<Song>("Sound/windbell");
// Light Manager
lightManager = new LightManager();
lightManager.AmbientLightColor = new Vector3(0.2f, 0.2f, 0.2f);
Services.AddService(typeof(LightManager), lightManager);
// Light 1
lightManager.Add("Light1", new PointLight(new Vector3(0, 1000.0f, 0), Vector3.One));
//tank = new Tank(this, Content, graphics);
terrain = new TanksOnAHeightmap.GameBase.Shapes.Terrain(this, Content, graphics);
//InputHelper
inputHelper = new InputHelper(PlayerIndex.One);
Services.AddService(typeof(InputHelper), inputHelper);
// Create the chase camera
camera = new ChaseCamera(this);
// Set the camera offsets
//camera.DesiredPositionOffset = new Vector3(0.0f, 600.0f, 800.0f);//150,150
//camera.LookAtOffset = new Vector3(0.0f, 80.0f, 0.0f);//80
camera.DesiredPositionOffset = new Vector3(0.0f, 45.0f, 20.0f);//150,150
camera.LookAtOffset = new Vector3(0.0f, 35.0f, -50.0f);//80
// Set camera perspective
camera.NearPlaneDistance = 10.0f;
camera.FarPlaneDistance = 4000.0f;
this.Services.AddService(typeof(TanksOnAHeightmap.GameBase.Shapes.Terrain), terrain);
this.Services.AddService(typeof(ChaseCamera), camera);
rand = new Random(0);
// Construct our particle system components.
explosionParticles = new ExplosionParticleSystem(this, Content);
ParticleSettings settings = new ParticleSettings();
this.Services.AddService(typeof(ExplosionParticleSystem), explosionParticles);
explosionSmokeParticles = new ExplosionSmokeParticleSystem(this, Content);
this.Services.AddService(typeof(ExplosionSmokeParticleSystem), explosionSmokeParticles);
projectileTrailParticles = new ProjectileTrailParticleSystem(this, Content);
//Trees
trees = new Trees[NUMBER_OF_TREES];
for (int i = 0; i < trees.Length; i++)
{
trees[i] = new Trees(this, Content, graphics);
//Components.Add(trees[i]);
}
explosionSmokeParticles.DrawOrder = 200;
projectileTrailParticles.DrawOrder = 300;
explosionParticles.DrawOrder = 400;
terrain.DrawOrder = 102;
//Trees
this.graphics.PreferredBackBufferWidth = 1024;
this.graphics.PreferredBackBufferHeight = 768;
start();
}
public Vector3 FindNextObstacle(List<Trees> nearTrees)
{
Matrix inverseTransformation = Matrix.Invert(tank.WorldMatrix);
var localPosition = new Vector3[nearTrees.Count];
int i = -1;
foreach (Trees tree in nearTrees)
{
i += 1;
localPosition[i] = Vector3.Transform(tree.Position, inverseTransformation);
}
float objectRadius;
float DistToClosestIP = float.MaxValue;
int closest = -1;
Vector3 boundingMax;
Vector3 boundingMin;
for (i = 0; i < localPosition.Length; i++)
{
if (localPosition[i].Z <= 100)
{
//1
boundingMax = nearTrees[i].BoundingBox.Max;
boundingMin = nearTrees[i].BoundingBox.Min;
boundingMax.Y = 0;
boundingMin.Y = 0;
objectRadius = (boundingMax - boundingMin).Length()/2.0f;
float ExpandedRadius = objectRadius + (DetectionBox.Max.X - DetectionBox.Min.X)/2.0f;
if (Math.Abs(localPosition[i].X) < ExpandedRadius)
{
float cX = -localPosition[i].Z;
float cY = localPosition[i].X;
var SqrtPart = (float) Math.Sqrt(ExpandedRadius*ExpandedRadius - cY*cY);
float ip = cX - SqrtPart;
if (ip <= 0.0) //!
{
ip = cX + SqrtPart;
}
if (ip < DistToClosestIP)
{
DistToClosestIP = ip;
closest = i;
}
}
}
}
var SteeringForce = new Vector3(0, 0, 0);
if (closest != -1)
{
//the closer the agent is to an object, the stronger the
//steering force should be
boundingMax = nearTrees[closest].BoundingBox.Max;
boundingMin = nearTrees[closest].BoundingBox.Min;
boundingMax.Y = 0;
boundingMin.Y = 0;
objectRadius = (boundingMax - boundingMin).Length()/2.0f;
float multiplier = 1.0f + (DetectionDistance - localPosition[closest].Z)/
DetectionDistance;
//calculate the lateral force ClosestIntersectingObstacle->BRadius()
//SteeringForce.X = (objectRadius - localPosition[closest].X) * multiplier * 0.01f;
//SteeringForce.X = -1.0f/(localPosition[closest].X) * multiplier*10;
//SteeringForce.X = -1.0f / (localPosition[closest].X) * multiplier * 10;
SteeringForce.X = ((DetectionBox.Max.X - DetectionBox.Min.X)/2.0f) + objectRadius;
if (localPosition[closest].X < 0.0f)
{
SteeringForce.X = SteeringForce.X + localPosition[closest].X;
}
else
{
SteeringForce.X = -1.0f*(SteeringForce.X - localPosition[closest].X);
}
SteeringForce.X *= multiplier*0.05f;
//apply a braking force proportional to the obstacles distance from
//the vehicle.
//float BrakingWeight = 0.1f;
// SteeringForce.Z = (objectRadius -
// localPosition[closest].Z) *
// BrakingWeight;
//System.Console.WriteLine(SteeringForce);
//return Vector3.Transform(SteeringForce, tank.Orientation * Transformation);
//return SteeringForce;
tank.SteeringForce = Vector3.Transform(SteeringForce, tank.Orientation);
closesdObstacle = nearTrees[closest];
return tank.SteeringForce;
}
else
{
//return Vector3.Zero;
tank.SteeringForce = Vector3.Zero;
closesdObstacle = null;
return Vector3.Zero;
}
}
