void HandleMouseButtonDown(MouseButtonDownEventArgs args)
{
Input input = Input;
PhysicsWorld2D physicsWorld = scene.GetComponent <PhysicsWorld2D>();
RigidBody2D rigidBody = physicsWorld.GetRigidBody(input.MousePosition.X, input.MousePosition.Y, uint.MaxValue); // Raycast for RigidBody2Ds to pick
if (rigidBody != null)
{
pickedNode = rigidBody.Node;
//log.Info(pickedNode.name);
StaticSprite2D staticSprite = pickedNode.GetComponent <StaticSprite2D>();
staticSprite.Color = (new Color(1.0f, 0.0f, 0.0f, 1.0f)); // Temporary modify color of the picked sprite
// Create a ConstraintMouse2D - Temporary apply this constraint to the pickedNode to allow grasping and moving with the mouse
ConstraintMouse2D constraintMouse = pickedNode.CreateComponent <ConstraintMouse2D>();
constraintMouse.Target = GetMousePositionXY();
constraintMouse.MaxForce = 1000 * rigidBody.Mass;
constraintMouse.CollideConnected = true;
constraintMouse.OtherBody = dummyBody; // Use dummy body instead of rigidBody. It's better to create a dummy body automatically in ConstraintMouse2D
constraintMouse.DampingRatio = 0.0f;
}
mouseMoveEventToken = Input.SubscribeToMouseMoved(HandleMouseMove);
mouseButtonUpToken = Input.SubscribeToMouseButtonUp(HandleMouseButtonUp);
}
void HandleTouchBegin3(TouchBeginEventArgs args)
{
var graphics = Graphics;
PhysicsWorld2D physicsWorld = scene.GetComponent <PhysicsWorld2D>();
RigidBody2D rigidBody = physicsWorld.GetRigidBody(new Vector2(args.X, args.Y), uint.MaxValue); // Raycast for RigidBody2Ds to pick
if (rigidBody != null)
{
pickedNode = rigidBody.Node;
StaticSprite2D staticSprite = pickedNode.GetComponent <StaticSprite2D>();
staticSprite.Color = (new Color(1.0f, 0.0f, 0.0f, 1.0f)); // Temporary modify color of the picked sprite
rigidBody = pickedNode.GetComponent <RigidBody2D>();
// Create a ConstraintMouse2D - Temporary apply this constraint to the pickedNode to allow grasping and moving with touch
ConstraintMouse2D constraintMouse = pickedNode.CreateComponent <ConstraintMouse2D>();
Vector3 pos = camera.ScreenToWorldPoint(new Vector3((float)args.X / graphics.Width, (float)args.Y / graphics.Height, 0.0f));
constraintMouse.Target = new Vector2(pos.X, pos.Y);
constraintMouse.MaxForce = 1000 * rigidBody.Mass;
constraintMouse.CollideConnected = true;
constraintMouse.OtherBody = dummyBody; // Use dummy body instead of rigidBody. It's better to create a dummy body automatically in ConstraintMouse2D
constraintMouse.DampingRatio = 0;
}
touchMoveEventToken = Input.SubscribeToTouchMove(HandleTouchMove3);
touchEndEventToken = Input.SubscribeToTouchEnd(HandleTouchEnd3);
}
public override void Start()
{
// We setup our scene, main camera and viewport
_viewport = GetSubsystem <Renderer>().GetViewport(0);
_scene = new Scene();
_scene.CreateComponent <Octree>().SetSize(new BoundingBox(1, 100), 3);
_viewport.Scene = _scene;
_camera = _scene.CreateChild("Camera").CreateComponent <Camera>();
_camera.Node.Position = new Vector3(50, 10, -1);
_camera.Orthographic = true;
_camera.OrthoSize = 26;
_viewport.Camera = _camera;
// We create a sound source for the music and the music
SoundSource musicSource = _scene.CreateComponent <SoundSource>();
Sound music = Cache.Get <Sound>("music/Happy_Bee.ogg");
music.SetLooped(true);
musicSource.Play(music);
musicSource.SetSoundType("Music");
// We don't need a sound listener for the above, but we add one for the sounds and adjust the music gain
Audio audioSystem = GetSubsystem <Audio>();
audioSystem.SetListener(_camera.Node.CreateComponent <SoundListener>());
audioSystem.SetMasterGain("Music", 0.3f);
// We create a background node which is a child of the camera so it won't move relative to it
Node bg = _camera.Node.CreateChild("Background");
StaticSprite2D bgspr = bg.CreateComponent <StaticSprite2D>();
bgspr.SetSprite(Cache.Get <Sprite2D>("scenarios/grasslands/bg.png"));
bg.SetPosition(new Vector3(0, 0, 100));
bg.SetScale2D(Vector2.One * 5);
// We add a physics world so we can simulate physics, and enable CCD
PhysicsWorld2D pw = _scene.CreateComponent <PhysicsWorld2D>();
pw.SetContinuousPhysics(true);
// We create a terrain, vehicle and cloud system
_terrain = new Terrain(_scene);
_vehicle = CreateVehicle(new Vector2(50, 10));
_clouds = new Clouds(50, 5, 40, 16, 40);
// We subscribe to the PostUpdateEvent
SubscribeToEvent <PostUpdateEvent>(PostUpdate);
// If we're building a debug release, we draw debug data
#if DEBUG
DebugRenderer dbr = _scene.CreateComponent <DebugRenderer>();
pw.SetDrawCenterOfMass(true); pw.SetDrawJoint(true); pw.SetDrawPair(true); pw.SetDrawShape(true);
SubscribeToEvent <PostRenderUpdateEvent>(e => { _scene.GetComponent <PhysicsWorld2D>().DrawDebugGeometry(dbr, false); });
#endif
}
private void Awake()
{
if (instance == null)
{
instance = this;
}
else
{
Destroy(gameObject);
}
}
private void CreatePhysicsWorld(PhysicsWorld2D physicsWorld)
{
AABB worldAABB = new AABB();
worldAABB.LowerBound.Set(-10000, -10000);
worldAABB.UpperBound.Set(10000, 10000);
Vec2 gravity = physicsWorld.Gravity;
Box2DX.Dynamics.World world = new Box2DX.Dynamics.World(worldAABB, gravity, false);
physicsWorld.World = world;
physicsWorld.SetBulletListner();
}
public static void DefineBody(EntityID entity, Registry registry, PhysicsWorld2D physicsWorld, TransformComponent transform)
{
var rigidBody = registry.GetComponent <RigidBody2D>(entity);
BodyDef bodyDef = new BodyDef();
bodyDef.Position = Util.UtilFunctions.ToVec2(transform.Position / PhysicsWorld2D.PixelToMeter);
bodyDef.Angle = transform.Rotation.Z;
bodyDef.AngularDamping = rigidBody.AngularDamping;
bodyDef.LinearDamping = rigidBody.LinearDamping;
bodyDef.FixedRotation = rigidBody.FixedRotation;
bodyDef.IsSleeping = false;
bodyDef.IsBullet = rigidBody.IsBullet;
Body body = physicsWorld.World.CreateBody(bodyDef);
FixtureDef shapeDef = null;
if (registry.TryGetComponent(entity, out BoxCollider box))
{
shapeDef = new PolygonDef();
((PolygonDef)shapeDef).SetAsBox((box.Width / 2) / PhysicsWorld2D.PixelToMeter, (box.Height / 2) / PhysicsWorld2D.PixelToMeter);
}
else if (registry.TryGetComponent(entity, out CircleCollider circle))
{
shapeDef = new CircleDef();
((CircleDef)shapeDef).Radius = circle.Radius;
}
shapeDef.Density = rigidBody.Density;
shapeDef.Friction = rigidBody.Friction;
shapeDef.Restitution = rigidBody.Restitution;
body.CreateFixture(shapeDef);
if (rigidBody.Mass > 0)
{
MassData massData = new MassData();
massData.Mass = rigidBody.Mass;
massData.Center = body.GetLocalCenter();
body.SetMass(massData);
}
else
{
body.SetMassFromShapes();
}
body.SetUserData(entity);
if (rigidBody.StartVelocity != Vector2.Zero)
{
body.SetLinearVelocity(Util.UtilFunctions.ToVec2(rigidBody.StartVelocity));
}
rigidBody.SetBody(body);
}
void CreateScene()
{
scene = new Scene();
scene.CreateComponent <Octree>();
scene.CreateComponent <DebugRenderer>();
PhysicsWorld2D physicsWorld = scene.CreateComponent <PhysicsWorld2D>(); // Create 2D physics world component
physicsWorld.DrawJoint = true; // Display the joints (Note that DrawDebugGeometry() must be set to true to acually draw the joints)
drawDebug = true; // Set DrawDebugGeometry() to true
// Create camera
CameraNode = scene.CreateChild("Camera");
// Set camera's position
CameraNode.Position = (new Vector3(0.0f, 0.0f, 0.0f)); // Note that Z setting is discarded; use camera.zoom instead (see MoveCamera() below for example)
camera = CameraNode.CreateComponent <Camera>();
camera.Orthographic = true;
var graphics = Graphics;
camera.OrthoSize = (float)graphics.Height * PixelSize;
camera.Zoom = 1.2f * Math.Min((float)graphics.Width / 1280.0f, (float)graphics.Height / 800.0f); // Set zoom according to user's resolution to ensure full visibility (initial zoom (1.2) is set for full visibility at 1280x800 resolution)
// Set up a viewport to the Renderer subsystem so that the 3D scene can be seen
Viewport viewport = new Viewport(Context, scene, camera, null);
Renderer renderer = Renderer;
renderer.SetViewport(0, viewport);
Zone zone = renderer.DefaultZone;
zone.FogColor = (new Color(0.1f, 0.1f, 0.1f)); // Set background color for the scene
// Create 4x3 grid
for (uint i = 0; i < 5; ++i)
{
Node edgeNode = scene.CreateChild("VerticalEdge");
RigidBody2D edgeBody = edgeNode.CreateComponent <RigidBody2D>();
if (dummyBody == null)
{
dummyBody = edgeBody; // Mark first edge as dummy body (used by mouse pick)
}
CollisionEdge2D edgeShape = edgeNode.CreateComponent <CollisionEdge2D>();
edgeShape.SetVertices(new Vector2(i * 2.5f - 5.0f, -3.0f), new Vector2(i * 2.5f - 5.0f, 3.0f));
edgeShape.Friction = 0.5f; // Set friction
}
for (uint j = 0; j < 4; ++j)
{
Node edgeNode = scene.CreateChild("HorizontalEdge");
/*RigidBody2D edgeBody = */
edgeNode.CreateComponent <RigidBody2D>();
CollisionEdge2D edgeShape = edgeNode.CreateComponent <CollisionEdge2D>();
edgeShape.SetVertices(new Vector2(-5.0f, j * 2.0f - 3.0f), new Vector2(5.0f, j * 2.0f - 3.0f));
edgeShape.Friction = 0.5f; // Set friction
}
var cache = ResourceCache;
// Create a box (will be cloned later)
Node box = scene.CreateChild("Box");
box.Position = (new Vector3(0.8f, -2.0f, 0.0f));
StaticSprite2D boxSprite = box.CreateComponent <StaticSprite2D>();
boxSprite.Sprite = cache.GetSprite2D("Urho2D/Box.png");
RigidBody2D boxBody = box.CreateComponent <RigidBody2D>();
boxBody.BodyType = BodyType2D.Dynamic;
boxBody.LinearDamping = 0.0f;
boxBody.AngularDamping = 0.0f;
CollisionBox2D shape = box.CreateComponent <CollisionBox2D>(); // Create box shape
shape.Size = new Vector2(0.32f, 0.32f); // Set size
shape.Density = 1.0f; // Set shape density (kilograms per meter squared)
shape.Friction = 0.5f; // Set friction
shape.Restitution = 0.1f; // Set restitution (slight bounce)
// Create a ball (will be cloned later)
Node ball = scene.CreateChild("Ball");
ball.Position = (new Vector3(1.8f, -2.0f, 0.0f));
StaticSprite2D ballSprite = ball.CreateComponent <StaticSprite2D>();
ballSprite.Sprite = cache.GetSprite2D("Urho2D/Ball.png");
RigidBody2D ballBody = ball.CreateComponent <RigidBody2D>();
ballBody.BodyType = BodyType2D.Dynamic;
ballBody.LinearDamping = 0.0f;
ballBody.AngularDamping = 0.0f;
CollisionCircle2D ballShape = ball.CreateComponent <CollisionCircle2D>(); // Create circle shape
ballShape.Radius = 0.16f; // Set radius
ballShape.Density = 1.0f; // Set shape density (kilograms per meter squared)
ballShape.Friction = 0.5f; // Set friction
ballShape.Restitution = 0.6f; // Set restitution: make it bounce
// Create a polygon
Node polygon = scene.CreateChild("Polygon");
polygon.Position = (new Vector3(1.6f, -2.0f, 0.0f));
polygon.SetScale(0.7f);
StaticSprite2D polygonSprite = polygon.CreateComponent <StaticSprite2D>();
polygonSprite.Sprite = cache.GetSprite2D("Urho2D/Aster.png");
RigidBody2D polygonBody = polygon.CreateComponent <RigidBody2D>();
polygonBody.BodyType = BodyType2D.Dynamic;
CollisionPolygon2D polygonShape = polygon.CreateComponent <CollisionPolygon2D>();
polygonShape.VertexCount = 6; // Set number of vertices (mandatory when using SetVertex())
polygonShape.SetVertex(0, new Vector2(-0.8f, -0.3f));
polygonShape.SetVertex(1, new Vector2(0.5f, -0.8f));
polygonShape.SetVertex(2, new Vector2(0.8f, -0.3f));
polygonShape.SetVertex(3, new Vector2(0.8f, 0.5f));
polygonShape.SetVertex(4, new Vector2(0.5f, 0.9f));
polygonShape.SetVertex(5, new Vector2(-0.5f, 0.7f));
polygonShape.Density = 1.0f; // Set shape density (kilograms per meter squared)
polygonShape.Friction = 0.3f; // Set friction
polygonShape.Restitution = 0.0f; // Set restitution (no bounce)
// Create a ConstraintDistance2D
CreateFlag("ConstraintDistance2D", -4.97f, 3.0f); // Display Text3D flag
Node boxDistanceNode = box.Clone(CreateMode.Replicated);
Node ballDistanceNode = ball.Clone(CreateMode.Replicated);
RigidBody2D ballDistanceBody = ballDistanceNode.GetComponent <RigidBody2D>();
boxDistanceNode.Position = (new Vector3(-4.5f, 2.0f, 0.0f));
ballDistanceNode.Position = (new Vector3(-3.0f, 2.0f, 0.0f));
ConstraintDistance2D constraintDistance = boxDistanceNode.CreateComponent <ConstraintDistance2D>(); // Apply ConstraintDistance2D to box
constraintDistance.OtherBody = ballDistanceBody; // Constrain ball to box
constraintDistance.OwnerBodyAnchor = boxDistanceNode.Position2D;
constraintDistance.OtherBodyAnchor = ballDistanceNode.Position2D;
// Make the constraint soft (comment to make it rigid, which is its basic behavior)
constraintDistance.FrequencyHz = 4.0f;
constraintDistance.DampingRatio = 0.5f;
// Create a ConstraintFriction2D ********** Not functional. From Box2d samples it seems that 2 anchors are required, Urho2D only provides 1, needs investigation ***********
CreateFlag("ConstraintFriction2D", 0.03f, 1.0f); // Display Text3D flag
Node boxFrictionNode = box.Clone(CreateMode.Replicated);
Node ballFrictionNode = ball.Clone(CreateMode.Replicated);
boxFrictionNode.Position = (new Vector3(0.5f, 0.0f, 0.0f));
ballFrictionNode.Position = (new Vector3(1.5f, 0.0f, 0.0f));
ConstraintFriction2D constraintFriction = boxFrictionNode.CreateComponent <ConstraintFriction2D>(); // Apply ConstraintDistance2D to box
constraintFriction.OtherBody = ballFrictionNode.GetComponent <RigidBody2D>(); // Constraint ball to box
// Create a ConstraintGear2D
CreateFlag("ConstraintGear2D", -4.97f, -1.0f); // Display Text3D flag
Node baseNode = box.Clone(CreateMode.Replicated);
RigidBody2D tempBody = baseNode.GetComponent <RigidBody2D>(); // Get body to make it static
tempBody.BodyType = BodyType2D.Static;
baseNode.Position = (new Vector3(-3.7f, -2.5f, 0.0f));
Node ball1Node = ball.Clone(CreateMode.Replicated);
ball1Node.Position = (new Vector3(-4.5f, -2.0f, 0.0f));
RigidBody2D ball1Body = ball1Node.GetComponent <RigidBody2D>();
Node ball2Node = ball.Clone(CreateMode.Replicated);
ball2Node.Position = (new Vector3(-3.0f, -2.0f, 0.0f));
RigidBody2D ball2Body = ball2Node.GetComponent <RigidBody2D>();
ConstraintRevolute2D gear1 = baseNode.CreateComponent <ConstraintRevolute2D>(); // Apply constraint to baseBox
gear1.OtherBody = ball1Body; // Constrain ball1 to baseBox
gear1.Anchor = ball1Node.Position2D;
ConstraintRevolute2D gear2 = baseNode.CreateComponent <ConstraintRevolute2D>(); // Apply constraint to baseBox
gear2.OtherBody = ball2Body; // Constrain ball2 to baseBox
gear2.Anchor = ball2Node.Position2D;
ConstraintGear2D constraintGear = ball1Node.CreateComponent <ConstraintGear2D>(); // Apply constraint to ball1
constraintGear.OtherBody = ball2Body; // Constrain ball2 to ball1
constraintGear.OwnerConstraint = gear1;
constraintGear.OtherConstraint = gear2;
constraintGear.Ratio = 1.0f;
ball1Body.ApplyAngularImpulse(0.015f, true); // Animate
// Create a vehicle from a compound of 2 ConstraintWheel2Ds
CreateFlag("ConstraintWheel2Ds compound", -2.45f, -1.0f); // Display Text3D flag
Node car = box.Clone(CreateMode.Replicated);
car.Scale = new Vector3(4.0f, 1.0f, 0.0f);
car.Position = (new Vector3(-1.2f, -2.3f, 0.0f));
StaticSprite2D tempSprite = car.GetComponent <StaticSprite2D>(); // Get car Sprite in order to draw it on top
tempSprite.OrderInLayer = 0; // Draw car on top of the wheels (set to -1 to draw below)
Node ball1WheelNode = ball.Clone(CreateMode.Replicated);
ball1WheelNode.Position = (new Vector3(-1.6f, -2.5f, 0.0f));
Node ball2WheelNode = ball.Clone(CreateMode.Replicated);
ball2WheelNode.Position = (new Vector3(-0.8f, -2.5f, 0.0f));
ConstraintWheel2D wheel1 = car.CreateComponent <ConstraintWheel2D>();
wheel1.OtherBody = ball1WheelNode.GetComponent <RigidBody2D>();
wheel1.Anchor = ball1WheelNode.Position2D;
wheel1.Axis = new Vector2(0.0f, 1.0f);
wheel1.MaxMotorTorque = 20.0f;
wheel1.FrequencyHz = 4.0f;
wheel1.DampingRatio = 0.4f;
ConstraintWheel2D wheel2 = car.CreateComponent <ConstraintWheel2D>();
wheel2.OtherBody = ball2WheelNode.GetComponent <RigidBody2D>();
wheel2.Anchor = ball2WheelNode.Position2D;
wheel2.Axis = new Vector2(0.0f, 1.0f);
wheel2.MaxMotorTorque = 10.0f;
wheel2.FrequencyHz = 4.0f;
wheel2.DampingRatio = 0.4f;
// ConstraintMotor2D
CreateFlag("ConstraintMotor2D", 2.53f, -1.0f); // Display Text3D flag
Node boxMotorNode = box.Clone(CreateMode.Replicated);
tempBody = boxMotorNode.GetComponent <RigidBody2D>(); // Get body to make it static
tempBody.BodyType = BodyType2D.Static;
Node ballMotorNode = ball.Clone(CreateMode.Replicated);
boxMotorNode.Position = (new Vector3(3.8f, -2.1f, 0.0f));
ballMotorNode.Position = (new Vector3(3.8f, -1.5f, 0.0f));
ConstraintMotor2D constraintMotor = boxMotorNode.CreateComponent <ConstraintMotor2D>();
constraintMotor.OtherBody = ballMotorNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintMotor.LinearOffset = new Vector2(0.0f, 0.8f); // Set ballNode position relative to boxNode position = (0,0)
constraintMotor.AngularOffset = 0.1f;
constraintMotor.MaxForce = 5.0f;
constraintMotor.MaxTorque = 10.0f;
constraintMotor.CorrectionFactor = 1.0f;
constraintMotor.CollideConnected = true; // doesn't work
// ConstraintMouse2D is demonstrated in HandleMouseButtonDown() function. It is used to "grasp" the sprites with the mouse.
CreateFlag("ConstraintMouse2D", 0.03f, -1.0f); // Display Text3D flag
// Create a ConstraintPrismatic2D
CreateFlag("ConstraintPrismatic2D", 2.53f, 3.0f); // Display Text3D flag
Node boxPrismaticNode = box.Clone(CreateMode.Replicated);
tempBody = boxPrismaticNode.GetComponent <RigidBody2D>(); // Get body to make it static
tempBody.BodyType = BodyType2D.Static;
Node ballPrismaticNode = ball.Clone(CreateMode.Replicated);
boxPrismaticNode.Position = new Vector3(3.3f, 2.5f, 0.0f);
ballPrismaticNode.Position = new Vector3(4.3f, 2.0f, 0.0f);
ConstraintPrismatic2D constraintPrismatic = boxPrismaticNode.CreateComponent <ConstraintPrismatic2D>();
constraintPrismatic.OtherBody = ballPrismaticNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintPrismatic.Axis = new Vector2(1.0f, 1.0f); // Slide from [0,0] to [1,1]
constraintPrismatic.Anchor = new Vector2(4.0f, 2.0f);
constraintPrismatic.LowerTranslation = -1.0f;
constraintPrismatic.UpperTranslation = 0.5f;
constraintPrismatic.EnableLimit = true;
constraintPrismatic.MaxMotorForce = 1.0f;
constraintPrismatic.MotorSpeed = 0.0f;
// ConstraintPulley2D
CreateFlag("ConstraintPulley2D", 0.03f, 3.0f); // Display Text3D flag
Node boxPulleyNode = box.Clone(CreateMode.Replicated);
Node ballPulleyNode = ball.Clone(CreateMode.Replicated);
boxPulleyNode.Position = (new Vector3(0.5f, 2.0f, 0.0f));
ballPulleyNode.Position = (new Vector3(2.0f, 2.0f, 0.0f));
ConstraintPulley2D constraintPulley = boxPulleyNode.CreateComponent <ConstraintPulley2D>(); // Apply constraint to box
constraintPulley.OtherBody = ballPulleyNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintPulley.OwnerBodyAnchor = boxPulleyNode.Position2D;
constraintPulley.OtherBodyAnchor = ballPulleyNode.Position2D;
constraintPulley.OwnerBodyGroundAnchor = boxPulleyNode.Position2D + new Vector2(0.0f, 1.0f);
constraintPulley.OtherBodyGroundAnchor = ballPulleyNode.Position2D + new Vector2(0.0f, 1.0f);
constraintPulley.Ratio = 1.0f; // Weight ratio between ownerBody and otherBody
// Create a ConstraintRevolute2D
CreateFlag("ConstraintRevolute2D", -2.45f, 3.0f); // Display Text3D flag
Node boxRevoluteNode = box.Clone(CreateMode.Replicated);
tempBody = boxRevoluteNode.GetComponent <RigidBody2D>(); // Get body to make it static
tempBody.BodyType = BodyType2D.Static;
Node ballRevoluteNode = ball.Clone(CreateMode.Replicated);
boxRevoluteNode.Position = (new Vector3(-2.0f, 1.5f, 0.0f));
ballRevoluteNode.Position = (new Vector3(-1.0f, 2.0f, 0.0f));
ConstraintRevolute2D constraintRevolute = boxRevoluteNode.CreateComponent <ConstraintRevolute2D>(); // Apply constraint to box
constraintRevolute.OtherBody = ballRevoluteNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintRevolute.Anchor = new Vector2(-1.0f, 1.5f);
constraintRevolute.LowerAngle = -1.0f; // In radians
constraintRevolute.UpperAngle = 0.5f; // In radians
constraintRevolute.EnableLimit = true;
constraintRevolute.MaxMotorTorque = 10.0f;
constraintRevolute.MotorSpeed = 0.0f;
constraintRevolute.EnableMotor = true;
// Create a ConstraintRope2D
CreateFlag("ConstraintRope2D", -4.97f, 1.0f); // Display Text3D flag
Node boxRopeNode = box.Clone(CreateMode.Replicated);
tempBody = boxRopeNode.GetComponent <RigidBody2D>();
tempBody.BodyType = BodyType2D.Static;
Node ballRopeNode = ball.Clone(CreateMode.Replicated);
boxRopeNode.Position = (new Vector3(-3.7f, 0.7f, 0.0f));
ballRopeNode.Position = (new Vector3(-4.5f, 0.0f, 0.0f));
ConstraintRope2D constraintRope = boxRopeNode.CreateComponent <ConstraintRope2D>();
constraintRope.OtherBody = ballRopeNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintRope.OwnerBodyAnchor = new Vector2(0.0f, -0.5f); // Offset from box (OwnerBody) : the rope is rigid from OwnerBody center to this ownerBodyAnchor
constraintRope.MaxLength = 0.9f; // Rope length
constraintRope.CollideConnected = true;
// Create a ConstraintWeld2D
CreateFlag("ConstraintWeld2D", -2.45f, 1.0f); // Display Text3D flag
Node boxWeldNode = box.Clone(CreateMode.Replicated);
Node ballWeldNode = ball.Clone(CreateMode.Replicated);
boxWeldNode.Position = (new Vector3(-0.5f, 0.0f, 0.0f));
ballWeldNode.Position = (new Vector3(-2.0f, 0.0f, 0.0f));
ConstraintWeld2D constraintWeld = boxWeldNode.CreateComponent <ConstraintWeld2D>();
constraintWeld.OtherBody = ballWeldNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintWeld.Anchor = boxWeldNode.Position2D;
constraintWeld.FrequencyHz = 4.0f;
constraintWeld.DampingRatio = 0.5f;
// Create a ConstraintWheel2D
CreateFlag("ConstraintWheel2D", 2.53f, 1.0f); // Display Text3D flag
Node boxWheelNode = box.Clone(CreateMode.Replicated);
Node ballWheelNode = ball.Clone(CreateMode.Replicated);
boxWheelNode.Position = (new Vector3(3.8f, 0.0f, 0.0f));
ballWheelNode.Position = (new Vector3(3.8f, 0.9f, 0.0f));
ConstraintWheel2D constraintWheel = boxWheelNode.CreateComponent <ConstraintWheel2D>();
constraintWheel.OtherBody = ballWheelNode.GetComponent <RigidBody2D>(); // Constrain ball to box
constraintWheel.Anchor = ballWheelNode.Position2D;
constraintWheel.Axis = new Vector2(0.0f, 1.0f);
constraintWheel.EnableMotor = true;
constraintWheel.MaxMotorTorque = 1.0f;
constraintWheel.MotorSpeed = 0.0f;
constraintWheel.FrequencyHz = 4.0f;
constraintWheel.DampingRatio = 0.5f;
constraintWheel.CollideConnected = true; // doesn't work
}
void CreateScene()
{
scene = new Scene();
scene.CreateComponent <Octree>();
scene.CreateComponent <DebugRenderer>();
// Create camera node
CameraNode = scene.CreateChild("Camera");
// Set camera's position
CameraNode.Position = new Vector3(0.0f, 5.0f, -10.0f);
Camera camera = CameraNode.CreateComponent <Camera>();
camera.Orthographic = true;
var graphics = Graphics;
camera.OrthoSize = graphics.Height * 0.05f;
camera.Zoom = 1.5f * Math.Min(graphics.Width / 1280.0f, graphics.Height / 800.0f); // Set zoom according to user's resolution to ensure full visibility (initial zoom (1.5) is set for full visibility at 1280x800 resolution)
// Create 2D physics world component
PhysicsWorld2D physicsWorld = scene.CreateComponent <PhysicsWorld2D>();
physicsWorld.DrawJoint = (true);
// Create ground
Node groundNode = scene.CreateChild("Ground");
// Create 2D rigid body for gound
RigidBody2D groundBody = groundNode.CreateComponent <RigidBody2D>();
// Create edge collider for ground
CollisionEdge2D groundShape = groundNode.CreateComponent <CollisionEdge2D>();
groundShape.SetVertices(new Vector2(-40.0f, 0.0f), new Vector2(40.0f, 0.0f));
const float y = 15.0f;
RigidBody2D prevBody = groundBody;
for (uint i = 0; i < NumObjects; ++i)
{
Node node = scene.CreateChild("RigidBody");
// Create rigid body
RigidBody2D body = node.CreateComponent <RigidBody2D>();
body.BodyType = BodyType2D.Dynamic;
// Create box
CollisionBox2D box = node.CreateComponent <CollisionBox2D>();
// Set friction
box.Friction = 0.2f;
// Set mask bits.
box.MaskBits = 0xFFFF & ~0x0002;
if (i == NumObjects - 1)
{
node.Position = new Vector3(1.0f * i, y, 0.0f);
body.AngularDamping = 0.4f;
box.SetSize(3.0f, 3.0f);
box.Density = 100.0f;
box.CategoryBits = 0x0002;
}
else
{
node.Position = new Vector3(0.5f + 1.0f * i, y, 0.0f);
box.SetSize(1.0f, 0.25f);
box.Density = 20.0f;
box.CategoryBits = 0x0001;
}
ConstraintRevolute2D joint = node.CreateComponent <ConstraintRevolute2D>();
joint.OtherBody = prevBody;
joint.Anchor = new Vector2(i, y);
joint.CollideConnected = false;
prevBody = body;
}
ConstraintRope2D constraintRope = groundNode.CreateComponent <ConstraintRope2D>();
constraintRope.OtherBody = prevBody;
constraintRope.OwnerBodyAnchor = new Vector2(0.0f, y);
constraintRope.MaxLength = NumObjects - 1.0f + 0.01f;
}
public override void Start()
{
cache = GetSubsystem <ResourceCache>();
input = GetSubsystem <Input>();
Renderer renderer = GetSubsystem <Renderer>();
graphics = GetSubsystem <Graphics>();
viewport = renderer.GetViewport(0);
scene = new Scene();
scene.CreateComponent <Octree>().SetSize(new BoundingBox(1, 100), 3);
viewport.Scene = scene;
camera = scene.CreateChild("Camera").CreateComponent <Camera>();
camera.Node.Position = new Vector3(15, 0, -1);
camera.Orthographic = true;
camera.OrthoSize = 26;
viewport.Camera = camera;
Node bg = camera.Node.CreateChild("bg");
var bgspr = bg.CreateComponent <StaticSprite2D>();
bgspr.SetSprite(cache.GetResource <Sprite2D>("scenarios/grasslands/bg.png"));
bg.SetPosition(new Vector3(0, 0, 100));
bg.SetScale2D(Vector2.One * 5);
chunkmat = cache.GetResource <Material>("_DBG/Unlit.xml");
chunkmat.SetTexture(0, cache.GetResource <Texture2D>("scenarios/grasslands/ground.png"));
surfMat = cache.GetResource <Material>("_DBG/UnlitAlpha.xml");
surfMat.SetTexture(0, cache.GetResource <Texture2D>("scenarios/grasslands/surface.png"));
//surfMat.SetTexture(0, cache.GetResource<Texture2D>("_DBG/dbg.png"));
PhysicsWorld2D pw = scene.CreateComponent <PhysicsWorld2D>();
pw.SetContinuousPhysics(true);
#if DEBUG
scene.CreateComponent <DebugRenderer>();
SubscribeToEvent <PostRenderUpdateEvent>(e => RenderDebug());
#endif
SubscribeToEvent <UpdateEvent>(e => Update());
// decors quick crappy hack
decors.Add(GetSprite("scenarios/grasslands/Object/Bush (1).png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Bush (2).png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Bush (3).png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Bush (4).png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Mushroom_1.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Mushroom_2.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Stone.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Sign_2.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Tree_1.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Tree_2.png"));
decors.Add(GetSprite("scenarios/grasslands/Object/Tree_3.png"));
foreach (Sprite2D d in decors)
{
d.SetHotSpot(new Vector2(0.5f, 0.1f));
}
Sprite2D crateSprite = GetSprite("scenarios/grasslands/Object/Crate.png");
Sprite2D[] cloudSprites =
{
GetSprite("scenarios/cloud1.png"),
GetSprite("scenarios/cloud2.png"),
GetSprite("scenarios/cloud3.png"),
};
Random rng = new Random();
for (int i = 0; i < chunksize * 200; i += chunksize)
{
GenerateChunk(i);
//innefficient clouds :P
var n = CreateSpriteNode(scene, cloudSprites[rng.Next(3)], 5, false);
n.SetPosition(new Vector3(i + rng.Next(8), rng.Next(15) + 15, 15));
clouds.Add(n);
//boxes
if (rng.Next(10) == 0)
{
var c = CreateSpriteNode(scene, crateSprite, 2, true);
c.SetPosition(new Vector3(i + rng.Next(8), 20, -5));
var box = c.CreateComponent <CollisionBox2D>();
box.SetSize(.8f, .8f);
box.SetDensity(0.1f);
box.SetRestitution(0.2f);
box.SetFriction(0.05f);
}
}
//for (float i = 0; i < chunksize*200; i+=0.2f)
//{
// CreateDecor(i);
//}
//foreach (CollisionChain2D col in chunks)
//{
// col.SetEnabled(false);
//}
currentVehicle = CreateTruck(new Vector2(2, 3));
}
