void CreateBoxOffMeshConnections(DynamicNavigationMesh navMesh, Node boxGroup)
{
foreach (var box in boxGroup.GetChildren())
{
var boxPos = box.Position;
float boxHalfSize = box.Scale.X / 2;
var connectionStart = box.CreateChild("ConnectionStart");
connectionStart.SetWorldPosition(navMesh.FindNearestPoint(boxPos + new Vector3(boxHalfSize, -boxHalfSize, 0), Vector3.One));
var connectionEnd = box.CreateChild("ConnectionEnd");
connectionEnd.SetWorldPosition(navMesh.FindNearestPoint(boxPos + new Vector3(boxHalfSize, boxHalfSize, 0), Vector3.One));
OffMeshConnection connection = connectionStart.CreateComponent<OffMeshConnection>();
connection.EndPoint = connectionEnd;
}
}
void CreateScene()
{
var cache = GetSubsystem <ResourceCache>();
scene = new Scene();
// Create octree, use default volume (-1000, -1000, -1000) to (1000, 1000, 1000)
// Also create a DebugRenderer component so that we can draw debug geometry
scene.CreateComponent <Octree>();
scene.CreateComponent <DebugRenderer>();
// Create scene node & StaticModel component for showing a static plane
Node planeNode = scene.CreateChild("Plane");
planeNode.Scale = new Vector3(100.0f, 1.0f, 100.0f);
StaticModel planeObject = planeNode.CreateComponent <StaticModel>();
planeObject.Model = (cache.Get <Model>("Models/Plane.mdl"));
planeObject.SetMaterial(cache.Get <Material>("Materials/StoneTiled.xml"));
// Create a Zone component for ambient lighting & fog control
Node zoneNode = scene.CreateChild("Zone");
Zone zone = zoneNode.CreateComponent <Zone>();
zone.SetBoundingBox(new BoundingBox(-1000.0f, 1000.0f));
zone.AmbientColor = new Color(0.15f, 0.15f, 0.15f);
zone.FogColor = new Color(0.5f, 0.5f, 0.7f);
zone.FogStart = 100.0f;
zone.FogEnd = 300.0f;
// Create a directional light to the world. Enable cascaded shadows on it
Node lightNode = scene.CreateChild("DirectionalLight");
lightNode.SetDirection(new Vector3(0.6f, -1.0f, 0.8f));
Light light = lightNode.CreateComponent <Light>();
light.LightType = LightType.LIGHT_DIRECTIONAL;
light.CastShadows = true;
light.ShadowBias = new BiasParameters(0.00025f, 0.5f);
// Set cascade splits at 10, 50 and 200 world units, fade shadows out at 80% of maximum shadow distance
light.ShadowCascade = new CascadeParameters(10.0f, 50.0f, 200.0f, 0.0f, 0.8f);
// Create randomly sized boxes. If boxes are big enough, make them occluders
const uint numBoxes = 20;
Node boxGroup = scene.CreateChild("Boxes");
for (uint i = 0; i < numBoxes; ++i)
{
Node boxNode = boxGroup.CreateChild("Box");
float size = 1.0f + NextRandom(10.0f);
boxNode.Position = (new Vector3(NextRandom(80.0f) - 40.0f, size * 0.5f, NextRandom(80.0f) - 40.0f));
boxNode.SetScale(size);
StaticModel boxObject = boxNode.CreateComponent <StaticModel>();
boxObject.Model = (cache.Get <Model>("Models/Box.mdl"));
boxObject.SetMaterial(cache.Get <Material>("Materials/Stone.xml"));
boxObject.CastShadows = true;
if (size >= 3.0f)
{
boxObject.Occluder = true;
}
}
// Create a DynamicNavigationMesh component to the scene root
DynamicNavigationMesh navMesh = scene.CreateComponent <DynamicNavigationMesh>();
// Set the agent height large enough to exclude the layers under boxes
navMesh.AgentHeight = 10.0f;
navMesh.CellHeight = 0.05f;
navMesh.DrawObstacles = true;
navMesh.DrawOffMeshConnections = true;
// Create a Navigable component to the scene root. This tags all of the geometry in the scene as being part of the
// navigation mesh. By default this is recursive, but the recursion could be turned off from Navigable
scene.CreateComponent <Navigable>();
// Add padding to the navigation mesh in Y-direction so that we can add objects on top of the tallest boxes
// in the scene and still update the mesh correctly
navMesh.Padding = new Vector3(0.0f, 10.0f, 0.0f);
// Now build the navigation geometry. This will take some time. Note that the navigation mesh will prefer to use
// physics geometry from the scene nodes, as it often is simpler, but if it can not find any (like in this example)
// it will use renderable geometry instead
navMesh.Build();
// Create an off-mesh connection to each box to make them climbable (tiny boxes are skipped). A connection is built from 2 nodes.
// Note that OffMeshConnections must be added before building the navMesh, but as we are adding Obstacles next, tiles will be automatically rebuilt.
// Creating connections post-build here allows us to use FindNearestPoint() to procedurally set accurate positions for the connection
CreateBoxOffMeshConnections(navMesh, boxGroup);
// Create some mushrooms
const uint numMushrooms = 100;
for (uint i = 0; i < numMushrooms; ++i)
{
CreateMushroom(new Vector3(NextRandom(90.0f) - 45.0f, 0.0f, NextRandom(90.0f) - 45.0f));
}
// Create a CrowdManager component to the scene root
crowdManager = scene.CreateComponent <CrowdManager>();
var parameters = crowdManager.GetObstacleAvoidanceParams(0);
// Set the params to "High (66)" setting
parameters.VelBias = 0.5f;
parameters.AdaptiveDivs = 7;
parameters.AdaptiveRings = 3;
parameters.AdaptiveDepth = 3;
crowdManager.SetObstacleAvoidanceParams(0, parameters);
// Create some movable barrels. We create them as crowd agents, as for moving entities it is less expensive and more convenient than using obstacles
CreateMovingBarrels(navMesh);
// Create Jack node that will follow the path
SpawnJack(new Vector3(-5.0f, 0.0f, 20.0f), scene.CreateChild("Jacks"));
// Create the camera. Limit far clip distance to match the fog
CameraNode = new Node();
Camera camera = CameraNode.CreateComponent <Camera>();
camera.FarClip = 300.0f;
// Set an initial position for the camera scene node above the plane
CameraNode.Position = new Vector3(0.0f, 50.0f, 0.0f);
Pitch = 80.0f;
CameraNode.Rotation = new Quaternion(Pitch, Yaw, 0.0f);
}
void CreateMovingBarrels(DynamicNavigationMesh navMesh)
{
var cache = GetSubsystem<ResourceCache>();
Node barrel = scene.CreateChild("Barrel");
StaticModel model = barrel.CreateComponent<StaticModel>();
model.Model = cache.Get<Model>("Models/Cylinder.mdl");
Material material = cache.Get<Material>("Materials/StoneTiled.xml");
model.SetMaterial(material);
material.SetTexture(TextureUnit.TU_DIFFUSE, cache.Get<Texture2D>("Textures/TerrainDetail2.dds"));
model.CastShadows = true;
for (int i = 0; i < 20; ++i)
{
Node clone = barrel.Clone(CreateMode.REPLICATED);
float size = 0.5f + NextRandom(1.0f);
clone.Scale = new Vector3(size / 1.5f, size * 2.0f, size / 1.5f);
clone.Position = navMesh.FindNearestPoint(new Vector3(NextRandom(80.0f) - 40.0f, size * 0.5f, NextRandom(80.0f) - 40.0f), Vector3.One);
CrowdAgent agent = clone.CreateComponent<CrowdAgent>();
agent.Radius = clone.Scale.X * 0.5f;
agent.Height = size;
agent.NavigationQuality = NavigationQuality.NAVIGATIONQUALITY_LOW;
}
barrel.Remove();
}
void OnGestureTapped(int argsX, int argsY)
{
// 3 touches at the same time kill everybody :-)
if (Input.NumTouches == 3)
{
KillAll();
}
if (surfaceIsValid && !positionIsSelected)
{
UI.Root.RemoveChild(loadingLabel);
loadingLabel = null;
PlaneDetectionEnabled = false;
//hide planes:
foreach (var node in anchorsNode.Children.ToArray())
{
// if surface is higher than floor - mark as Obstacle
if (Math.Abs(node.WorldPosition.Y - LastHitTest.Value.Y) >= 0.1f)
{
node.CreateComponent <Obstacle>();
}
var model = node.GetChild("SubPlane").GetComponent <StaticModel>();
model.Material.SetShaderParameter("MeshColor", Color.Transparent);
}
var music = ResourceCache.GetSound("Sounds/theme.ogg");
music.Looped = true;
themeSoundSource.Play(music);
ContinuesHitTestAtCenter = false;
var hitPos = cursorNode.Position; // - Vector3.UnitZ * 0.01f;
positionIsSelected = true;
navMesh = Scene.CreateComponent <DynamicNavigationMesh>();
Scene.CreateComponent <Navigable>();
navMesh.CellSize = 0.01f;
navMesh.CellHeight = 0.05f;
navMesh.DrawOffMeshConnections = true;
navMesh.DrawNavAreas = true;
navMesh.TileSize = 1;
navMesh.AgentRadius = 0.1f;
navMesh.Build();
crowdManager = Scene.CreateComponent <CrowdManager>();
var parameters = crowdManager.GetObstacleAvoidanceParams(0);
parameters.VelBias = 0.5f;
parameters.AdaptiveDivs = 7;
parameters.AdaptiveRings = 3;
parameters.AdaptiveDepth = 3;
crowdManager.SetObstacleAvoidanceParams(0, parameters);
armyNode = Scene.CreateChild();
SubscribeToEvents();
int mutantIndex = 1;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
SpawnMutant(new Vector3(hitPos.X + 0.15f * i, hitPos.Y, hitPos.Z + 0.13f * j), "Mutant " + mutantIndex++);
}
}
return;
}
if (positionIsSelected)
{
var hitPos = Raycast((float)argsX / Graphics.Width, (float)argsY / Graphics.Height);
if (hitPos == null)
{
return;
}
cursorNode.Position = hitPos.Value + Vector3.UnitY * 0.1f;
Vector3 pathPos = navMesh.FindNearestPoint(hitPos.Value, new Vector3(0.1f, 0.1f, 0.1f) * 5);
Scene.GetComponent <CrowdManager>().SetCrowdTarget(pathPos, Scene);
var sound = ResourceCache.GetSound($"Sounds/go{rand.Next(1, 6)}.wav");
actionSoundSource.Play(sound);
actionSoundSource.Gain = 0.4f;
}
}
