void rotate_body_to(FarseerPhysics.Dynamics.Body body, float desiredAngle)
{
float DEGTORAD = Mathf.PI / 180f;
float bodyAngle = body.Rotation;
float nextAngle = bodyAngle + body.AngularVelocity * Time.deltaTime;
float totalRotation = desiredAngle - nextAngle;
while (totalRotation < -180 * DEGTORAD)
{
totalRotation += 360 * DEGTORAD;
}
while (totalRotation > 180 * DEGTORAD)
{
totalRotation -= 360 * DEGTORAD;
}
float desiredAngularVelocity = totalRotation * 60;
float impulse = body.Inertia * desiredAngularVelocity; // disregard time factor
body.ApplyAngularImpulse(impulse / 5f);
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0f, 10f);
HasCursor = false;
EnableCameraControl = true;
HasVirtualStick = true;
_hzFront = 8.5f;
_hzBack = 5.0f;
_zeta = 0.85f;
_maxSpeed = 50.0f;
#if WINDOWS_PHONE
_scale = 2f / 3f;
#else
_scale = 1f;
#endif
// terrain
_ground = new Body(World);
{
Vertices terrain = new Vertices();
terrain.Add(new Vector2(-20f, -5f));
terrain.Add(new Vector2(-20f, 0f));
terrain.Add(new Vector2(20f, 0f));
terrain.Add(new Vector2(25f, -0.25f));
terrain.Add(new Vector2(30f, -1f));
terrain.Add(new Vector2(35f, -4f));
terrain.Add(new Vector2(40f, 0f));
terrain.Add(new Vector2(45f, 0f));
terrain.Add(new Vector2(50f, 1f));
terrain.Add(new Vector2(55f, 2f));
terrain.Add(new Vector2(60f, 2f));
terrain.Add(new Vector2(65f, 1.25f));
terrain.Add(new Vector2(70f, 0f));
terrain.Add(new Vector2(75f, -0.3f));
terrain.Add(new Vector2(80f, -1.5f));
terrain.Add(new Vector2(85f, -3.5f));
terrain.Add(new Vector2(90f, 0f));
terrain.Add(new Vector2(95f, 0.5f));
terrain.Add(new Vector2(100f, 1f));
terrain.Add(new Vector2(105f, 2f));
terrain.Add(new Vector2(110f, 2.5f));
terrain.Add(new Vector2(115f, 1.3f));
terrain.Add(new Vector2(120f, 0f));
terrain.Add(new Vector2(160f, 0f));
terrain.Add(new Vector2(159f, 10f));
terrain.Add(new Vector2(201f, 10f));
terrain.Add(new Vector2(200f, 0f));
terrain.Add(new Vector2(240f, 0f));
terrain.Add(new Vector2(250f, -5f));
terrain.Add(new Vector2(250f, 10f));
terrain.Add(new Vector2(270f, 10f));
terrain.Add(new Vector2(270f, 0));
terrain.Add(new Vector2(310f, 0));
terrain.Add(new Vector2(310f, -5));
for (int i = 0; i < terrain.Count - 1; ++i)
{
FixtureFactory.AttachEdge(terrain[i], terrain[i + 1], _ground);
}
_ground.Friction = 0.6f;
}
// teeter board
{
_board = new Body(World);
_board.BodyType = BodyType.Dynamic;
_board.Position = new Vector2(140.0f, -1.0f);
PolygonShape box = new PolygonShape(1f);
box.SetAsBox(10.0f, 0.25f);
_teeter =
new Sprite(ScreenManager.Assets.TextureFromShape(box, MaterialType.Pavement, Color.LightGray, 1.2f));
_board.CreateFixture(box);
RevoluteJoint teeterAxis = JointFactory.CreateRevoluteJoint(_ground, _board, Vector2.Zero);
teeterAxis.LowerLimit = -8.0f * Settings.Pi / 180.0f;
teeterAxis.UpperLimit = 8.0f * Settings.Pi / 180.0f;
teeterAxis.LimitEnabled = true;
World.AddJoint(teeterAxis);
_board.ApplyAngularImpulse(-100.0f);
}
// bridge
{
_bridgeSegments = new List<Body>();
const int segmentCount = 20;
PolygonShape shape = new PolygonShape(1f);
shape.SetAsBox(1.0f, 0.125f);
_bridge =
new Sprite(ScreenManager.Assets.TextureFromShape(shape, MaterialType.Dots, Color.SandyBrown, 1f));
Body prevBody = _ground;
for (int i = 0; i < segmentCount; ++i)
{
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(161f + 2f * i, 0.125f);
Fixture fix = body.CreateFixture(shape);
fix.Friction = 0.6f;
JointFactory.CreateRevoluteJoint(World, prevBody, body, -Vector2.UnitX);
prevBody = body;
_bridgeSegments.Add(body);
}
JointFactory.CreateRevoluteJoint(World, _ground, prevBody, Vector2.UnitX);
}
// boxes
{
_boxes = new List<Body>();
PolygonShape box = new PolygonShape(1f);
box.SetAsBox(0.5f, 0.5f);
_box =
new Sprite(ScreenManager.Assets.TextureFromShape(box, MaterialType.Squares, Color.SaddleBrown, 2f));
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -0.5f);
body.CreateFixture(box);
_boxes.Add(body);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -1.5f);
body.CreateFixture(box);
_boxes.Add(body);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -2.5f);
body.CreateFixture(box);
_boxes.Add(body);
}
// car
{
Vertices vertices = new Vertices(8);
vertices.Add(new Vector2(-2.5f, 0.08f));
vertices.Add(new Vector2(-2.375f, -0.46f));
vertices.Add(new Vector2(-0.58f, -0.92f));
vertices.Add(new Vector2(0.46f, -0.92f));
vertices.Add(new Vector2(2.5f, -0.17f));
vertices.Add(new Vector2(2.5f, 0.205f));
vertices.Add(new Vector2(2.3f, 0.33f));
vertices.Add(new Vector2(-2.25f, 0.35f));
PolygonShape chassis = new PolygonShape(vertices, 2f);
_car = new Body(World);
_car.BodyType = BodyType.Dynamic;
_car.Position = new Vector2(0.0f, -1.0f);
_car.CreateFixture(chassis);
_wheelBack = new Body(World);
_wheelBack.BodyType = BodyType.Dynamic;
_wheelBack.Position = new Vector2(-1.709f, -0.78f);
Fixture fix = _wheelBack.CreateFixture(new CircleShape(0.5f, 0.8f));
fix.Friction = 0.9f;
_wheelFront = new Body(World);
_wheelFront.BodyType = BodyType.Dynamic;
_wheelFront.Position = new Vector2(1.54f, -0.8f);
_wheelFront.CreateFixture(new CircleShape(0.5f, 1f));
Vector2 axis = new Vector2(0.0f, -1.2f);
_springBack = new LineJoint(_car, _wheelBack, _wheelBack.Position, axis);
_springBack.MotorSpeed = 0.0f;
_springBack.MaxMotorTorque = 20.0f;
_springBack.MotorEnabled = true;
_springBack.Frequency = _hzBack;
_springBack.DampingRatio = _zeta;
World.AddJoint(_springBack);
_springFront = new LineJoint(_car, _wheelFront, _wheelFront.Position, axis);
_springFront.MotorSpeed = 0.0f;
_springFront.MaxMotorTorque = 10.0f;
_springFront.MotorEnabled = false;
_springFront.Frequency = _hzFront;
_springFront.DampingRatio = _zeta;
World.AddJoint(_springFront);
_carBody = new Sprite(ScreenManager.Content.Load<Texture2D>("Samples/car"),
AssetCreator.CalculateOrigin(_car) / _scale);
_wheel = new Sprite(ScreenManager.Content.Load<Texture2D>("Samples/wheel"));
}
Camera.MinRotation = -0.05f;
Camera.MaxRotation = 0.05f;
Camera.TrackingBody = _car;
Camera.EnableTracking = true;
}
private CarTest()
{
_hz = 4.0f;
_zeta = 0.7f;
_speed = 50.0f;
Body ground = new Body(World);
{
EdgeShape shape = new EdgeShape(new Vector2(-20.0f, 0.0f), new Vector2(20.0f, 0.0f));
ground.CreateFixture(shape);
float[] hs = new[] { 0.25f, 1.0f, 4.0f, 0.0f, 0.0f, -1.0f, -2.0f, -2.0f, -1.25f, 0.0f };
float x = 20.0f, y1 = 0.0f;
const float dx = 5.0f;
for (int i = 0; i < 10; ++i)
{
float y2 = hs[i];
FixtureFactory.AttachEdge(new Vector2(x, y1), new Vector2(x + dx, y2), ground);
y1 = y2;
x += dx;
}
for (int i = 0; i < 10; ++i)
{
float y2 = hs[i];
FixtureFactory.AttachEdge(new Vector2(x, y1), new Vector2(x + dx, y2), ground);
y1 = y2;
x += dx;
}
FixtureFactory.AttachEdge(new Vector2(x, 0.0f), new Vector2(x + 40.0f, 0.0f), ground);
x += 80.0f;
FixtureFactory.AttachEdge(new Vector2(x, 0.0f), new Vector2(x + 40.0f, 0.0f), ground);
x += 40.0f;
FixtureFactory.AttachEdge(new Vector2(x, 0.0f), new Vector2(x + 10.0f, 5.0f), ground);
x += 20.0f;
FixtureFactory.AttachEdge(new Vector2(x, 0.0f), new Vector2(x + 40.0f, 0.0f), ground);
x += 40.0f;
FixtureFactory.AttachEdge(new Vector2(x, 0.0f), new Vector2(x, 20.0f), ground);
ground.Friction = 0.6f;
}
// Teeter
{
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(140.0f, 1.0f);
PolygonShape box = new PolygonShape(1);
box.SetAsBox(10.0f, 0.25f);
body.CreateFixture(box);
RevoluteJoint jd = JointFactory.CreateRevoluteJoint(ground, body, Vector2.Zero);
jd.LowerLimit = -8.0f * Settings.Pi / 180.0f;
jd.UpperLimit = 8.0f * Settings.Pi / 180.0f;
jd.LimitEnabled = true;
World.AddJoint(jd);
body.ApplyAngularImpulse(100.0f);
}
//Bridge
{
const int N = 20;
PolygonShape shape = new PolygonShape(1);
shape.SetAsBox(1.0f, 0.125f);
Body prevBody = ground;
for (int i = 0; i < N; ++i)
{
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(161.0f + 2.0f * i, -0.125f);
Fixture fix = body.CreateFixture(shape);
fix.Friction = 0.6f;
Vector2 anchor = new Vector2(-1, 0);
JointFactory.CreateRevoluteJoint(World, prevBody, body, anchor);
prevBody = body;
}
Vector2 anchor2 = new Vector2(1.0f, 0);
JointFactory.CreateRevoluteJoint(World, ground, prevBody, anchor2);
}
// Boxes
{
PolygonShape box = new PolygonShape(0.5f);
box.SetAsBox(0.5f, 0.5f);
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(230.0f, 0.5f);
body.CreateFixture(box);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(230.0f, 1.5f);
body.CreateFixture(box);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(230.0f, 2.5f);
body.CreateFixture(box);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(230.0f, 3.5f);
body.CreateFixture(box);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(230.0f, 4.5f);
body.CreateFixture(box);
}
// Car
{
Vertices vertices = new Vertices(8);
vertices.Add(new Vector2(-1.5f, -0.5f));
vertices.Add(new Vector2(1.5f, -0.5f));
vertices.Add(new Vector2(1.5f, 0.0f));
vertices.Add(new Vector2(0.0f, 0.9f));
vertices.Add(new Vector2(-1.15f, 0.9f));
vertices.Add(new Vector2(-1.5f, 0.2f));
PolygonShape chassis = new PolygonShape(vertices, 1);
CircleShape circle = new CircleShape(0.4f, 1);
_car = new Body(World);
_car.BodyType = BodyType.Dynamic;
_car.Position = new Vector2(0.0f, 1.0f);
_car.CreateFixture(chassis);
_wheel1 = new Body(World);
_wheel1.BodyType = BodyType.Dynamic;
_wheel1.Position = new Vector2(-1.0f, 0.35f);
Fixture fix = _wheel1.CreateFixture(circle);
fix.Friction = 0.9f;
_wheel2 = new Body(World);
_wheel2.BodyType = BodyType.Dynamic;
_wheel2.Position = new Vector2(1.0f, 0.4f);
_wheel2.CreateFixture(circle);
Vector2 axis = new Vector2(0.0f, 1.0f);
_spring1 = new WheelJoint(_car, _wheel1, _wheel1.Position, axis);
_spring1.MotorSpeed = 0.0f;
_spring1.MaxMotorTorque = 20.0f;
_spring1.MotorEnabled = true;
_spring1.Frequency = _hz;
_spring1.DampingRatio = _zeta;
World.AddJoint(_spring1);
_spring2 = new WheelJoint(_car, _wheel2, _wheel2.Position, axis);
_spring2.MotorSpeed = 0.0f;
_spring2.MaxMotorTorque = 10.0f;
_spring2.MotorEnabled = false;
_spring2.Frequency = _hz;
_spring2.DampingRatio = _zeta;
World.AddJoint(_spring2);
}
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2( 0f, 10f );
HasCursor = false;
EnableCameraControl = true;
HasVirtualStick = true;
_hzFront = 9.5f;
_hzBack = 6.0f;
_zeta = 1f;
_maxSpeed = 150.0f;
#if WINDOWS_PHONE
_scale = 2f / 3f;
#else
_scale = 1f;
#endif
_mapScale = 2;
_groundTex = ContentHelper.GetTexture( "tutorial" );
var terrain = GetVertsFromMapImage( _groundTex, _mapScale, out _groundOrigin );
// terrain
_ground = BodyFactory.CreateCompoundPolygon( World, terrain, 1f, BodyType.Static );
_ground.Friction = 1f;
// teeter board
{
_board = new Body( World );
_board.BodyType = BodyType.Dynamic;
_board.Position = new Vector2( 140.0f, -1.0f );
var box = new PolygonShape( 1f );
box.SetAsBox( 10.0f, 0.25f );
_teeter =
new PrimitiveSprite( ScreenManager.Assets.TextureFromShape( box, MaterialType.Pavement, Color.LightGray, 1.2f ) );
_board.CreateFixture( box );
RevoluteJoint teeterAxis = JointFactory.CreateRevoluteJoint( _ground, _board, Vector2.Zero );
teeterAxis.LowerLimit = -8.0f * Settings.Pi / 180.0f;
teeterAxis.UpperLimit = 8.0f * Settings.Pi / 180.0f;
teeterAxis.LimitEnabled = true;
World.AddJoint( teeterAxis );
_board.ApplyAngularImpulse( -100.0f );
}
// bridge
{
_bridgeSegments = new List<Body>();
const int segmentCount = 20;
var shape = new PolygonShape( 1f );
shape.SetAsBox( 1.0f, 0.125f );
_bridge =
new PrimitiveSprite( ScreenManager.Assets.TextureFromShape( shape, MaterialType.Dots, Color.SandyBrown, 1f ) );
Body prevBody = _ground;
for ( int i = 0; i < segmentCount; ++i ) {
var body = new Body( World );
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2( 161f + 2f * i, 0.125f );
Fixture fix = body.CreateFixture( shape );
fix.Friction = 0.6f;
JointFactory.CreateRevoluteJoint( World, prevBody, body, -Vector2.UnitX );
prevBody = body;
_bridgeSegments.Add( body );
}
JointFactory.CreateRevoluteJoint( World, _ground, prevBody, Vector2.UnitX );
}
// boxes
{
_boxes = new List<Body>();
var box = new PolygonShape( 1f );
box.SetAsBox( 0.5f, 0.5f );
_box =
new PrimitiveSprite( ScreenManager.Assets.TextureFromShape( box, MaterialType.Squares, Color.SaddleBrown, 2f ) );
var body = new Body( World );
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2( 220f, -0.5f );
body.CreateFixture( box );
_boxes.Add( body );
body = new Body( World );
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2( 220f, -1.5f );
body.CreateFixture( box );
_boxes.Add( body );
body = new Body( World );
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2( 220f, -2.5f );
body.CreateFixture( box );
_boxes.Add( body );
}
// car
{
var vertices = new Vertices( 8 );
vertices.Add( new Vector2( -2.5f, 0.08f ) );
vertices.Add( new Vector2( -2.375f, -0.46f ) );
vertices.Add( new Vector2( -0.58f, -0.92f ) );
vertices.Add( new Vector2( 0.46f, -0.92f ) );
vertices.Add( new Vector2( 2.5f, -0.17f ) );
vertices.Add( new Vector2( 2.5f, 0.205f ) );
vertices.Add( new Vector2( 2.3f, 0.33f ) );
vertices.Add( new Vector2( -2.25f, 0.35f ) );
var chassis = new PolygonShape( vertices, 1f );
_car = new Body( World );
_car.BodyType = BodyType.Dynamic;
_car.Position = new Vector2( 0.0f, -1.0f );
_car.CreateFixture( chassis );
//_car.AngularDamping = 24f;
_wheelBack = new Body( World );
_wheelBack.BodyType = BodyType.Dynamic;
_wheelBack.Position = new Vector2( -1.709f, -0.78f );
Fixture fix = _wheelBack.CreateFixture( new CircleShape( 0.5f, .2f ) );
fix.Friction = 1f;
_wheelFront = new Body( World );
_wheelFront.BodyType = BodyType.Dynamic;
_wheelFront.Position = new Vector2( 1.54f, -0.8f );
_wheelFront.CreateFixture( new CircleShape( 0.5f, .2f ) ).Friction = 1f;
var axis = new Vector2( 0.0f, -1.2f );
_springBack = new LineJoint( _car, _wheelBack, _wheelBack.Position, axis );
_springBack.MotorSpeed = 0.0f;
_springBack.MaxMotorTorque = 90.0f;
_springBack.MotorEnabled = true;
_springBack.Frequency = _hzBack;
_springBack.DampingRatio = _zeta;
World.AddJoint( _springBack );
_springFront = new LineJoint( _car, _wheelFront, _wheelFront.Position, axis );
_springFront.MotorSpeed = 0.0f;
_springFront.MaxMotorTorque = 60.0f;
_springFront.MotorEnabled = false;
_springFront.Frequency = _hzFront;
_springFront.DampingRatio = _zeta;
World.AddJoint( _springFront );
_carBody = new PrimitiveSprite( ContentHelper.GetTexture( "car" ),
AssetCreator.CalculateOrigin( _car ) / _scale );
_wheel = new PrimitiveSprite( ContentHelper.GetTexture( "wheel" ) );
}
Camera.MinRotation = -0.01f;
Camera.MaxRotation = 0.01f;
Camera.TrackingBody = _car;
Camera.EnableTracking = true;
//Just for preview stuff
_car.Position -= ConvertUnits.ToSimUnits( 3600, 300 );
_wheelBack.Position -= ConvertUnits.ToSimUnits( 3600, 300 );
_wheelFront.Position -= ConvertUnits.ToSimUnits( 3600, 300 );
Camera.Position -= new Vector2( 0, 300 );
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0f, 10f);
HasCursor = false;
EnableCameraControl = true;
_hzFront = 8.5f;
_hzBack = 5.0f;
_zeta = 0.85f;
_maxSpeed = 50.0f;
// terrain
_ground = new Body(World);
{
Vertices terrain = new Vertices();
terrain.Add(new Vector2(-20f, -5f));
terrain.Add(new Vector2(-20f, 0f));
terrain.Add(new Vector2(20f, 0f));
terrain.Add(new Vector2(25f, -0.25f));
terrain.Add(new Vector2(30f, -1f));
terrain.Add(new Vector2(35f, -4f));
terrain.Add(new Vector2(40f, 0f));
terrain.Add(new Vector2(45f, 0f));
terrain.Add(new Vector2(50f, 1f));
terrain.Add(new Vector2(55f, 2f));
terrain.Add(new Vector2(60f, 2f));
terrain.Add(new Vector2(65f, 1.25f));
terrain.Add(new Vector2(70f, 0f));
terrain.Add(new Vector2(75f, -0.3f));
terrain.Add(new Vector2(80f, -1.5f));
terrain.Add(new Vector2(85f, -3.5f));
terrain.Add(new Vector2(90f, 0f));
terrain.Add(new Vector2(95f, 0.5f));
terrain.Add(new Vector2(100f, 1f));
terrain.Add(new Vector2(105f, 2f));
terrain.Add(new Vector2(110f, 2.5f));
terrain.Add(new Vector2(115f, 1.3f));
terrain.Add(new Vector2(120f, 0f));
terrain.Add(new Vector2(160f, 0f));
terrain.Add(new Vector2(159f, 10f));
terrain.Add(new Vector2(201f, 10f));
terrain.Add(new Vector2(200f, 0f));
terrain.Add(new Vector2(240f, 0f));
terrain.Add(new Vector2(250f, -5f));
terrain.Add(new Vector2(250f, 10f));
terrain.Add(new Vector2(270f, 10f));
terrain.Add(new Vector2(270f, 0));
terrain.Add(new Vector2(310f, 0));
terrain.Add(new Vector2(310f, -5));
for (int i = 0; i < terrain.Count - 1; ++i)
{
FixtureFactory.AttachEdge(terrain[i], terrain[i + 1], _ground);
}
_ground.Friction = 0.6f;
}
// teeter board
{
_board = new Body(World);
_board.BodyType = BodyType.Dynamic;
_board.Position = new Vector2(140.0f, -1.0f);
PolygonShape box = new PolygonShape(1f);
box.Vertices = PolygonTools.CreateRectangle(10.0f, 0.25f);
_teeter = new Sprite(ContentWrapper.TextureFromShape(box, "Stripe", ContentWrapper.Gold, ContentWrapper.Black, ContentWrapper.Black, 1f));
_board.CreateFixture(box);
RevoluteJoint teeterAxis = JointFactory.CreateRevoluteJoint(World, _ground, _board, Vector2.Zero);
teeterAxis.LowerLimit = -8.0f * Settings.Pi / 180.0f;
teeterAxis.UpperLimit = 8.0f * Settings.Pi / 180.0f;
teeterAxis.LimitEnabled = true;
_board.ApplyAngularImpulse(-100.0f);
}
// bridge
{
_bridgeSegments = new List<Body>();
const int segmentCount = 20;
PolygonShape shape = new PolygonShape(1f);
shape.Vertices = PolygonTools.CreateRectangle(1.0f, 0.125f);
_bridge = new Sprite(ContentWrapper.TextureFromShape(shape, ContentWrapper.Gold, ContentWrapper.Black));
Body prevBody = _ground;
for (int i = 0; i < segmentCount; ++i)
{
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(161f + 2f * i, 0.125f);
Fixture fix = body.CreateFixture(shape);
fix.Friction = 0.6f;
JointFactory.CreateRevoluteJoint(World, prevBody, body, -Vector2.UnitX);
prevBody = body;
_bridgeSegments.Add(body);
}
JointFactory.CreateRevoluteJoint(World, _ground, prevBody, Vector2.UnitX);
}
// boxes
{
_boxes = new List<Body>();
PolygonShape box = new PolygonShape(1f);
box.Vertices = PolygonTools.CreateRectangle(0.5f, 0.5f);
_box = new Sprite(ContentWrapper.TextureFromShape(box, "Square", ContentWrapper.Sky, ContentWrapper.Sunset, ContentWrapper.Black, 1f));
Body body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -0.5f);
body.CreateFixture(box);
_boxes.Add(body);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -1.5f);
body.CreateFixture(box);
_boxes.Add(body);
body = new Body(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(220f, -2.5f);
body.CreateFixture(box);
_boxes.Add(body);
}
// car
{
Vertices vertices = new Vertices(8);
vertices.Add(new Vector2(-2.5f, 0.08f));
vertices.Add(new Vector2(-2.375f, -0.46f));
vertices.Add(new Vector2(-0.58f, -0.92f));
vertices.Add(new Vector2(0.46f, -0.92f));
vertices.Add(new Vector2(2.5f, -0.17f));
vertices.Add(new Vector2(2.5f, 0.205f));
vertices.Add(new Vector2(2.3f, 0.33f));
vertices.Add(new Vector2(-2.25f, 0.35f));
PolygonShape chassis = new PolygonShape(vertices, 2f);
_car = new Body(World);
_car.BodyType = BodyType.Dynamic;
_car.Position = new Vector2(0.0f, -1.0f);
_car.CreateFixture(chassis);
_wheelBack = new Body(World);
_wheelBack.BodyType = BodyType.Dynamic;
_wheelBack.Position = new Vector2(-1.709f, -0.78f);
Fixture fix = _wheelBack.CreateFixture(new CircleShape(0.5f, 0.8f));
fix.Friction = 0.9f;
_wheelFront = new Body(World);
_wheelFront.BodyType = BodyType.Dynamic;
_wheelFront.Position = new Vector2(1.54f, -0.8f);
_wheelFront.CreateFixture(new CircleShape(0.5f, 1f));
Vector2 axis = new Vector2(0.0f, -1.2f);
_springBack = new WheelJoint(_car, _wheelBack, _wheelBack.Position, axis, true);
_springBack.MotorSpeed = 0.0f;
_springBack.MaxMotorTorque = 20.0f;
_springBack.MotorEnabled = true;
_springBack.Frequency = _hzBack;
_springBack.DampingRatio = _zeta;
World.AddJoint(_springBack);
_springFront = new WheelJoint(_car, _wheelFront, _wheelFront.Position, axis, true);
_springFront.MotorSpeed = 0.0f;
_springFront.MaxMotorTorque = 10.0f;
_springFront.MotorEnabled = false;
_springFront.Frequency = _hzFront;
_springFront.DampingRatio = _zeta;
World.AddJoint(_springFront);
// GFX
_carBody = new Sprite(ContentWrapper.GetTexture("Car"), ContentWrapper.CalculateOrigin(_car));
_wheel = new Sprite(ContentWrapper.GetTexture("Wheel"));
}
Camera.MinRotation = -0.05f;
Camera.MaxRotation = 0.05f;
Camera.TrackingBody = _car;
Camera.EnableTracking = true;
}