本文整理汇总了C#中Box2D.Collision.Shapes.b2PolygonShape.Set方法的典型用法代码示例。如果您正苦于以下问题：C# b2PolygonShape.Set方法的具体用法？C# b2PolygonShape.Set怎么用？C# b2PolygonShape.Set使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Box2D.Collision.Shapes.b2PolygonShape的用法示例。
在下文中一共展示了b2PolygonShape.Set方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CreatePlatform
void CreatePlatform() {
// Define the dynamic body.
var bodyDef = new b2BodyDef();
bodyDef.type = b2BodyType.b2_staticBody; //or you could use b2_staticBody
bodyDef.position.Set(initialLocation.X/Constants.PTM_RATIO, initialLocation.Y/Constants.PTM_RATIO);
var shape = new b2PolygonShape();
var num = 4;
b2Vec2[] vertices = {
new b2Vec2(-102.0f / Constants.PTM_RATIO, -49.5f / Constants.PTM_RATIO),
new b2Vec2(-113.0f / Constants.PTM_RATIO, -81.5f / Constants.PTM_RATIO),
new b2Vec2(113.0f / Constants.PTM_RATIO, -84.5f / Constants.PTM_RATIO),
new b2Vec2(106.0f / Constants.PTM_RATIO, -47.5f / Constants.PTM_RATIO)
};
shape.Set(vertices, num);
// Define the dynamic body fixture.
var fixtureDef = new b2FixtureDef();
fixtureDef.shape = shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution = 0.1f;
CreateBodyWithSpriteAndFixture(theWorld, bodyDef, fixtureDef, spriteImageName);
//CONTINUING TO ADD BODY SHAPE....
// THIS IS THE Sling base....
//row 1, col 1
var num2 = 4;
b2Vec2[] vertices2 = {
new b2Vec2(41.0f / Constants.PTM_RATIO, -6.5f / Constants.PTM_RATIO),
new b2Vec2(35.0f / Constants.PTM_RATIO, -57.5f / Constants.PTM_RATIO),
new b2Vec2(57.0f / Constants.PTM_RATIO, -65.5f / Constants.PTM_RATIO),
new b2Vec2(49.0f / Constants.PTM_RATIO, -7.5f / Constants.PTM_RATIO)
};
shape.Set(vertices2, num2);
fixtureDef.shape = shape;
body.CreateFixture(fixtureDef);
}示例2: CreateGround
private void CreateGround()
{
// Define the dynamic body.
var bodyDef = new b2BodyDef();
bodyDef.type = b2BodyType.b2_staticBody; //or you could use b2_staticBody
bodyDef.position.Set(initialLocation.X/Constants.PTM_RATIO, initialLocation.Y/Constants.PTM_RATIO);
b2PolygonShape shape = new b2PolygonShape();
int num = 4;
b2Vec2[] vertices = {
new b2Vec2(-1220.0f / Constants.PTM_RATIO, 54.0f / Constants.PTM_RATIO),
new b2Vec2(-1220.0f / Constants.PTM_RATIO, -52.0f / Constants.PTM_RATIO),
new b2Vec2(1019.0f / Constants.PTM_RATIO, -52.0f / Constants.PTM_RATIO),
new b2Vec2(1019.0f / Constants.PTM_RATIO, 54.0f / Constants.PTM_RATIO)
};
shape.Set(vertices, num);
// Define the dynamic body fixture.
var fixtureDef = new b2FixtureDef();
fixtureDef.shape = shape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 1.0f;
fixtureDef.restitution = 0.1f;
CreateBodyWithSpriteAndFixture(theWorld, bodyDef, fixtureDef, spriteImageName);
if (!TheLevel.SharedLevel.IS_RETINA)
{
//non retina adjustment
sprite.ScaleX = 1.05f;
} else {
// retina adjustment
sprite.ScaleX = 2.05f;
sprite.ScaleY = 2.0f;
}
}示例3: Car
public Car()
{
m_hz = 4.0f;
m_zeta = 0.7f;
m_speed = 50.0f;
b2Body ground = null;
{
b2BodyDef bd = new b2BodyDef();
ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 0.0f;
fd.friction = 0.6f;
shape.Set(new b2Vec2(-20.0f, 0.0f), new b2Vec2(20.0f, 0.0f));
ground.CreateFixture(fd);
float[] hs = {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, dx = 5.0f;
for (int i = 0; i < 10; ++i)
{
float y2 = hs[i];
shape.Set(new b2Vec2(x, y1), new b2Vec2(x + dx, y2));
ground.CreateFixture(fd);
y1 = y2;
x += dx;
}
for (int i = 0; i < 10; ++i)
{
float y2 = hs[i];
shape.Set(new b2Vec2(x, y1), new b2Vec2(x + dx, y2));
ground.CreateFixture(fd);
y1 = y2;
x += dx;
}
shape.Set(new b2Vec2(x, 0.0f), new b2Vec2(x + 40.0f, 0.0f));
ground.CreateFixture(fd);
x += 80.0f;
shape.Set(new b2Vec2(x, 0.0f), new b2Vec2(x + 40.0f, 0.0f));
ground.CreateFixture(fd);
x += 40.0f;
shape.Set(new b2Vec2(x, 0.0f), new b2Vec2(x + 10.0f, 5.0f));
ground.CreateFixture(fd);
x += 20.0f;
shape.Set(new b2Vec2(x, 0.0f), new b2Vec2(x + 40.0f, 0.0f));
ground.CreateFixture(fd);
x += 40.0f;
shape.Set(new b2Vec2(x, 0.0f), new b2Vec2(x, 20.0f));
ground.CreateFixture(fd);
}
// Teeter
{
b2BodyDef bd = new b2BodyDef();
bd.position.Set(140.0f, 1.0f);
bd.type = b2BodyType.b2_dynamicBody;
b2Body body = m_world.CreateBody(bd);
b2PolygonShape box = new b2PolygonShape();
box.SetAsBox(10.0f, 0.25f);
body.CreateFixture(box, 1.0f);
b2RevoluteJointDef jd = new b2RevoluteJointDef();
jd.Initialize(ground, body, body.Position);
jd.lowerAngle = -8.0f * b2Settings.b2_pi / 180.0f;
jd.upperAngle = 8.0f * b2Settings.b2_pi / 180.0f;
jd.enableLimit = true;
m_world.CreateJoint(jd);
body.ApplyAngularImpulse(100.0f);
}
// Bridge
{
int N = 20;
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(1.0f, 0.125f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
fd.friction = 0.6f;
b2RevoluteJointDef jd = new b2RevoluteJointDef();
b2Body prevBody = ground;
for (int i = 0; i < N; ++i)
{
//.........这里部分代码省略.........
示例4: CreateEnemy
void CreateEnemy()
{
// Define the dynamic body.
var bodyDef = b2BodyDef.Create();
bodyDef.type = b2BodyType.b2_dynamicBody; //or you could use b2_staticBody
bodyDef.fixedRotation = isRotationFixed;
bodyDef.position.Set(initialLocation.X/Constants.PTM_RATIO, initialLocation.Y/Constants.PTM_RATIO);
b2PolygonShape shape = new b2PolygonShape();
b2CircleShape shapeCircle = new b2CircleShape();
if (shapeCreationMethod == CreationMethod.DiameterOfImageForCircle) {
var tempSprite = new CCSprite(spriteImageName);
float radiusInMeters = (tempSprite.ContentSize.Width / Constants.PTM_RATIO) * 0.5f;
shapeCircle.Radius = radiusInMeters;
}
else if ( shapeCreationMethod == CreationMethod.ShapeOfSourceImage) {
var tempSprite = new CCSprite(spriteImageName);
var num = 4;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top left corner
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 )/ Constants.PTM_RATIO), //bottom right corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO) //top right corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.ShapeOfSourceImageButSlightlySmaller ) {
var tempSprite = new CCSprite(spriteImageName);
var num = 4;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) *.8f / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 )*.8f / Constants.PTM_RATIO), //top left corner
new b2Vec2( (tempSprite.ContentSize.Width / -2 )*.8f / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 )*.8f / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 )*.8f / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 )*.8f / Constants.PTM_RATIO), //bottom right corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 )*.8f / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 )*.8f / Constants.PTM_RATIO) //top right corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Triangle) {
var tempSprite = new CCSprite(spriteImageName);
var num = 3;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom right corner
new b2Vec2( 0.0f / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 )/ Constants.PTM_RATIO) // top center of image
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.TriangleRightAngle) {
var tempSprite = new CCSprite(spriteImageName);
var num = 3;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top right corner
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top left corner
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 )/ Constants.PTM_RATIO) //bottom left corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Trapezoid) {
var tempSprite = new CCSprite(spriteImageName);
var num = 4;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / 4 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top of image, 3/4's across
new b2Vec2( (tempSprite.ContentSize.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top of image, 1/4's across
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom right corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Hexagon) {
var tempSprite = new CCSprite(spriteImageName);
var num = 6;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.ContentSize.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / 2 ) / Constants.PTM_RATIO), //top of image, 1/4 across
new b2Vec2( (tempSprite.ContentSize.Width / -2 ) / Constants.PTM_RATIO, 0.0f / Constants.PTM_RATIO), // left, center
new b2Vec2( (tempSprite.ContentSize.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom of image, 1/4 across
new b2Vec2( (tempSprite.ContentSize.Width / 4 ) / Constants.PTM_RATIO, (tempSprite.ContentSize.Height / -2 ) / Constants.PTM_RATIO), //bottom of image, 3/4's across
new b2Vec2( (tempSprite.ContentSize.Width / 2 ) / Constants.PTM_RATIO, 0.0f / Constants.PTM_RATIO), // right, center
//.........这里部分代码省略.........
示例5: Revolute
public Revolute()
{
b2Body ground;
{
b2BodyDef bd = new b2BodyDef();
ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-40.0f, 0.0f), new b2Vec2(40.0f, 0.0f));
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
//fd.filter.categoryBits = 2;
ground.CreateFixture(fd);
}
{
b2CircleShape shape = new b2CircleShape();
shape.Radius = 0.5f;
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
b2RevoluteJointDef rjd = new b2RevoluteJointDef();
bd.position.Set(-10.0f, 20.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(shape, 5.0f);
float w = 100.0f;
body.AngularVelocity = w;
body.LinearVelocity = new b2Vec2(-8.0f * w, 0.0f);
rjd.Initialize(ground, body, new b2Vec2(-10.0f, 12.0f));
rjd.motorSpeed = 1.0f * b2Settings.b2_pi;
rjd.maxMotorTorque = 10000.0f;
rjd.enableMotor = false;
rjd.lowerAngle = -0.25f * b2Settings.b2_pi;
rjd.upperAngle = 0.5f * b2Settings.b2_pi;
rjd.enableLimit = true;
rjd.CollideConnected = true;
m_joint = (b2RevoluteJoint) m_world.CreateJoint(rjd);
}
{
b2CircleShape circle_shape = new b2CircleShape();
circle_shape.Radius = 3.0f;
b2BodyDef circle_bd = new b2BodyDef();
circle_bd.type = b2BodyType.b2_dynamicBody;
circle_bd.position.Set(5.0f, 30.0f);
b2FixtureDef fd = new b2FixtureDef();
fd.density = 5.0f;
fd.filter.maskBits = 1;
fd.shape = circle_shape;
m_ball = m_world.CreateBody(circle_bd);
m_ball.CreateFixture(fd);
b2PolygonShape polygon_shape = new b2PolygonShape();
polygon_shape.SetAsBox(10.0f, 0.2f, new b2Vec2(-10.0f, 0.0f), 0.0f);
b2BodyDef polygon_bd = new b2BodyDef();
polygon_bd.position.Set(20.0f, 10.0f);
polygon_bd.type = b2BodyType.b2_dynamicBody;
polygon_bd.bullet = true;
b2Body polygon_body = m_world.CreateBody(polygon_bd);
polygon_body.CreateFixture(polygon_shape, 2.0f);
b2RevoluteJointDef rjd = new b2RevoluteJointDef();
rjd.Initialize(ground, polygon_body, new b2Vec2(20.0f, 10.0f));
rjd.lowerAngle = -0.25f * b2Settings.b2_pi;
rjd.upperAngle = 0.0f * b2Settings.b2_pi;
rjd.enableLimit = true;
m_world.CreateJoint(rjd);
}
// Tests mass computation of a small object far from the origin
{
b2BodyDef bodyDef = new b2BodyDef();
bodyDef.type = b2BodyType.b2_dynamicBody;
b2Body body = m_world.CreateBody(bodyDef);
b2PolygonShape polyShape = new b2PolygonShape();
b2Vec2[] verts = new b2Vec2[3];
verts[0].Set(17.63f, 36.31f);
verts[1].Set(17.52f, 36.69f);
verts[2].Set(17.19f, 36.36f);
polyShape.Set(verts, 3);
b2FixtureDef polyFixtureDef = new b2FixtureDef();
polyFixtureDef.shape = polyShape;
polyFixtureDef.density = 1;
body.CreateFixture(polyFixtureDef); //assertion hits inside here
}
//.........这里部分代码省略.........
示例6: CreateObject
void CreateObject()
{
// Define the dynamic body.
var bodyDef = new b2BodyDef();
bodyDef.type = b2BodyType.b2_dynamicBody; //or you could use b2_staticBody
bodyDef.position.Set(initialLocation.X/Constants.PTM_RATIO, initialLocation.Y/Constants.PTM_RATIO);
var shape = new b2PolygonShape();
var shapeCircle = new b2CircleShape();
if (shapeCreationMethod == CreationMethod.DiameterOfImageForCircle) {
var tempSprite = new CCSprite(spriteImageName);
var radiusInMeters = (tempSprite.Texture.ContentSizeInPixels.Width / Constants.PTM_RATIO) * 0.5f;
shapeCircle.Radius = radiusInMeters;
}
else if ( shapeCreationMethod == CreationMethod.ShapeOfSourceImage) {
var tempSprite = new CCSprite(spriteImageName);
var num = 4;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top left corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 )/ Constants.PTM_RATIO), //bottom right corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO) //top right corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Triangle) {
var tempSprite = new CCSprite(spriteImageName);
var num = 3;
b2Vec2[] vertices = {
new b2Vec2((tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom right corner
new b2Vec2( 0.0f / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 )/ Constants.PTM_RATIO) // top center of image
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.TriangleRightAngle) {
var tempSprite = new CCSprite(spriteImageName);
var num = 3;
b2Vec2[] vertices = {
new b2Vec2((tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top right corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top left corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 )/ Constants.PTM_RATIO) //bottom left corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Trapezoid) {
var tempSprite = new CCSprite(spriteImageName);
var num = 4;
b2Vec2[] vertices = {
new b2Vec2((tempSprite.Texture.ContentSizeInPixels.Width / 4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top of image, 3/4's across
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top of image, 1/4's across
new b2Vec2((tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom left corner
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom right corner
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Hexagon) {
var tempSprite = new CCSprite(spriteImageName);
var num = 6;
b2Vec2[] vertices = {
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO), //top of image, 1/4 across
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -2 ) / Constants.PTM_RATIO, 0.0f / Constants.PTM_RATIO), // left, center
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / -4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom of image, 1/4 across
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / -2 ) / Constants.PTM_RATIO), //bottom of image, 3/4's across
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 2 ) / Constants.PTM_RATIO, 0.0f / Constants.PTM_RATIO), // right, center
new b2Vec2( (tempSprite.Texture.ContentSizeInPixels.Width / 4 ) / Constants.PTM_RATIO, (tempSprite.Texture.ContentSizeInPixels.Height / 2 ) / Constants.PTM_RATIO) //top of image, 3/4's across
};
shape.Set(vertices, num);
}
else if ( shapeCreationMethod == CreationMethod.Pentagon) {
var tempSprite = new CCSprite(spriteImageName);
var num = 5;
//.........这里部分代码省略.........
示例7: CompoundShapes
public CompoundShapes()
{
{
b2BodyDef bd = new b2BodyDef();
bd.position.Set(0.0f, 0.0f);
b2Body body = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(50.0f, 0.0f), new b2Vec2(-50.0f, 0.0f));
body.CreateFixture(shape, 0.0f);
}
{
b2CircleShape circle1 = new b2CircleShape();
circle1.Radius = 0.5f;
circle1.Position = new b2Vec2(-0.5f, 0.5f);
b2CircleShape circle2 = new b2CircleShape();
circle2.Radius = 0.5f;
circle2.Position = new b2Vec2(0.5f, 0.5f);
for (int i = 0; i < 10; ++i)
{
float x = Rand.RandomFloat(-0.1f, 0.1f);
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(x + 5.0f, 1.05f + 2.5f * i);
bd.angle = Rand.RandomFloat(-b2Settings.b2_pi, b2Settings.b2_pi);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(circle1, 2.0f);
body.CreateFixture(circle2, 0.0f);
}
}
{
b2PolygonShape polygon1 = new b2PolygonShape();
polygon1.SetAsBox(0.25f, 0.5f);
b2PolygonShape polygon2 = new b2PolygonShape();
polygon2.SetAsBox(0.25f, 0.5f, new b2Vec2(0.0f, -0.5f), 0.5f * b2Settings.b2_pi);
for (int i = 0; i < 10; ++i)
{
float x = Rand.RandomFloat(-0.1f, 0.1f);
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(x - 5.0f, 1.05f + 2.5f * i);
bd.angle = Rand.RandomFloat(-b2Settings.b2_pi, b2Settings.b2_pi);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(polygon1, 2.0f);
body.CreateFixture(polygon2, 2.0f);
}
}
{
b2Transform xf1 = new b2Transform();
xf1.q.Set(0.3524f * b2Settings.b2_pi);
xf1.p = xf1.q.GetXAxis();
b2Vec2[] vertices = new b2Vec2[3];
b2PolygonShape triangle1 = new b2PolygonShape();
vertices[0] = b2Math.b2Mul(xf1, new b2Vec2(-1.0f, 0.0f));
vertices[1] = b2Math.b2Mul(xf1, new b2Vec2(1.0f, 0.0f));
vertices[2] = b2Math.b2Mul(xf1, new b2Vec2(0.0f, 0.5f));
triangle1.Set(vertices, 3);
b2Transform xf2 = new b2Transform();
xf2.q.Set(-0.3524f * b2Settings.b2_pi);
xf2.p = -xf2.q.GetXAxis();
b2PolygonShape triangle2 = new b2PolygonShape();
vertices[0] = b2Math.b2Mul(xf2, new b2Vec2(-1.0f, 0.0f));
vertices[1] = b2Math.b2Mul(xf2, new b2Vec2(1.0f, 0.0f));
vertices[2] = b2Math.b2Mul(xf2, new b2Vec2(0.0f, 0.5f));
triangle2.Set(vertices, 3);
for (int i = 0; i < 10; ++i)
{
float x = Rand.RandomFloat(-0.1f, 0.1f);
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(x, 2.05f + 2.5f * i);
bd.angle = 0.0f;
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(triangle1, 2.0f);
body.CreateFixture(triangle2, 2.0f);
}
}
{
b2PolygonShape bottom = new b2PolygonShape();
bottom.SetAsBox(1.5f, 0.15f);
b2PolygonShape left = new b2PolygonShape();
left.SetAsBox(0.15f, 2.7f, new b2Vec2(-1.45f, 2.35f), 0.2f);
b2PolygonShape right = new b2PolygonShape();
right.SetAsBox(0.15f, 2.7f, new b2Vec2(1.45f, 2.35f), -0.2f);
//.........这里部分代码省略.........
示例8: CreateLeg
public void CreateLeg(float s, b2Vec2 wheelAnchor)
{
b2Vec2 p1 = new b2Vec2(5.4f * s, -6.1f);
b2Vec2 p2 = new b2Vec2(7.2f * s, -1.2f);
b2Vec2 p3 = new b2Vec2(4.3f * s, -1.9f);
b2Vec2 p4 = new b2Vec2(3.1f * s, 0.8f);
b2Vec2 p5 = new b2Vec2(6.0f * s, 1.5f);
b2Vec2 p6 = new b2Vec2(2.5f * s, 3.7f);
b2FixtureDef fd1 = new b2FixtureDef();
b2FixtureDef fd2 = new b2FixtureDef();
fd1.filter.groupIndex = -1;
fd2.filter.groupIndex = -1;
fd1.density = 1.0f;
fd2.density = 1.0f;
b2PolygonShape poly1 = new b2PolygonShape();
b2PolygonShape poly2 = new b2PolygonShape();
if (s > 0.0f)
{
b2Vec2[] vertices = new b2Vec2[3];
vertices[0] = p1;
vertices[1] = p2;
vertices[2] = p3;
poly1.Set(vertices, 3);
vertices[0] = b2Vec2.Zero;
vertices[1] = p5 - p4;
vertices[2] = p6 - p4;
poly2.Set(vertices, 3);
}
else
{
b2Vec2[] vertices = new b2Vec2[3];
vertices[0] = p1;
vertices[1] = p3;
vertices[2] = p2;
poly1.Set(vertices, 3);
vertices[0] = b2Vec2.Zero;
vertices[1] = p6 - p4;
vertices[2] = p5 - p4;
poly2.Set(vertices, 3);
}
fd1.shape = poly1;
fd2.shape = poly2;
b2BodyDef bd1 = new b2BodyDef();
b2BodyDef bd2 = new b2BodyDef();
bd1.type = b2BodyType.b2_dynamicBody;
bd2.type = b2BodyType.b2_dynamicBody;
bd1.position = m_offset;
bd2.position = p4 + m_offset;
bd1.angularDamping = 10.0f;
bd2.angularDamping = 10.0f;
b2Body body1 = m_world.CreateBody(bd1);
b2Body body2 = m_world.CreateBody(bd2);
body1.CreateFixture(fd1);
body2.CreateFixture(fd2);
b2DistanceJointDef djd = new b2DistanceJointDef();
// Using a soft distance constraint can reduce some jitter.
// It also makes the structure seem a bit more fluid by
// acting like a suspension system.
djd.dampingRatio = 0.5f;
djd.frequencyHz = 10.0f;
djd.Initialize(body1, body2, p2 + m_offset, p5 + m_offset);
m_world.CreateJoint(djd);
djd.Initialize(body1, body2, p3 + m_offset, p4 + m_offset);
m_world.CreateJoint(djd);
djd.Initialize(body1, m_wheel, p3 + m_offset, wheelAnchor + m_offset);
m_world.CreateJoint(djd);
djd.Initialize(body2, m_wheel, p6 + m_offset, wheelAnchor + m_offset);
m_world.CreateJoint(djd);
b2RevoluteJointDef rjd = new b2RevoluteJointDef();
rjd.Initialize(body2, m_chassis, p4 + m_offset);
m_world.CreateJoint(rjd);
}示例9: ApplyForce
public ApplyForce()
{
m_world.Gravity = new b2Vec2(0.0f, 0.0f);
float k_restitution = 0.4f;
b2Body ground;
{
b2BodyDef bd = new b2BodyDef();
bd.position = new b2Vec2(0.0f, 20.0f);
ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
b2FixtureDef sd = new b2FixtureDef();
sd.shape = shape;
sd.density = 0.0f;
sd.restitution = k_restitution;
// Left vertical
shape.Set(new b2Vec2(-20.0f, -20.0f), new b2Vec2(-20.0f, 20.0f));
ground.CreateFixture(sd);
// Right vertical
shape.Set(new b2Vec2(20.0f, -20.0f), new b2Vec2(20.0f, 20.0f));
ground.CreateFixture(sd);
// Top horizontal
shape.Set(new b2Vec2(-20.0f, 20.0f), new b2Vec2(20.0f, 20.0f));
ground.CreateFixture(sd);
// Bottom horizontal
shape.Set(new b2Vec2(-20.0f, -20.0f), new b2Vec2(20.0f, -20.0f));
ground.CreateFixture(sd);
}
{
b2Transform xf1;
xf1.q = new b2Rot(0.3524f * b2Settings.b2_pi);
xf1.p = xf1.q.GetXAxis();
b2Vec2[] vertices = new b2Vec2[3];
vertices[0] = b2Math.b2Mul(xf1, new b2Vec2(-1.0f, 0.0f));
vertices[1] = b2Math.b2Mul(xf1, new b2Vec2(1.0f, 0.0f));
vertices[2] = b2Math.b2Mul(xf1, new b2Vec2(0.0f, 0.5f));
b2PolygonShape poly1 = new b2PolygonShape();
poly1.Set(vertices, 3);
b2FixtureDef sd1 = new b2FixtureDef();
sd1.shape = poly1;
sd1.density = 4.0f;
b2Transform xf2 = new b2Transform();
xf2.q.Set(-0.3524f * b2Settings.b2_pi);
xf2.p = -xf2.q.GetXAxis();
vertices[0] = b2Math.b2Mul(xf2, new b2Vec2(-1.0f, 0.0f));
vertices[1] = b2Math.b2Mul(xf2, new b2Vec2(1.0f, 0.0f));
vertices[2] = b2Math.b2Mul(xf2, new b2Vec2(0.0f, 0.5f));
b2PolygonShape poly2 = new b2PolygonShape();
poly2.Set(vertices, 3);
b2FixtureDef sd2 = new b2FixtureDef();
sd2.shape = poly2;
sd2.density = 2.0f;
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.angularDamping = 5.0f;
bd.linearDamping = 0.1f;
bd.position.Set(0.0f, 2.0f);
bd.angle = b2Settings.b2_pi;
bd.allowSleep = false;
m_body = m_world.CreateBody(bd);
m_body.CreateFixture(sd1);
m_body.CreateFixture(sd2);
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(0.5f, 0.5f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
fd.friction = 0.3f;
for (int i = 0; i < 10; ++i)
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position = new b2Vec2(0.0f, 5.0f + 1.54f * i);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
//.........这里部分代码省略.........
示例10: Bridge
public Bridge()
{
b2Body ground = null;
{
b2BodyDef bd = new b2BodyDef();
ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-40.0f, 0.0f), new b2Vec2(40.0f, 0.0f));
ground.CreateFixture(shape, 0.0f);
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
fd.friction = 0.2f;
b2RevoluteJointDef jd = new b2RevoluteJointDef();
b2Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position = new b2Vec2(-14.5f + 1.0f * i, 5.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
b2Vec2 anchor = new b2Vec2(-15.0f + 1.0f * i, 5.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
if (i == (e_count >> 1))
{
m_middle = body;
}
prevBody = body;
}
b2Vec2 anchor1 = new b2Vec2(-15.0f + 1.0f * e_count, 5.0f);
jd.Initialize(prevBody, ground, anchor1);
m_world.CreateJoint(jd);
}
for (int i = 0; i < 2; ++i)
{
b2Vec2[] vertices = new b2Vec2[3];
vertices[0].Set(-0.5f, 0.0f);
vertices[1].Set(0.5f, 0.0f);
vertices[2].Set(0.0f, 1.5f);
b2PolygonShape shape = new b2PolygonShape();
shape.Set(vertices, 3);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position = new b2Vec2(-8.0f + 8.0f * i, 12.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
}
for (int i = 0; i < 3; ++i)
{
b2CircleShape shape = new b2CircleShape();
shape.Radius = 0.5f;
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(-6.0f + 6.0f * i, 10.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
}
}示例11: CollisionFiltering
public CollisionFiltering()
{
// Ground body
{
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-40.0f, 0.0f), new b2Vec2(40.0f, 0.0f));
b2FixtureDef sd = new b2FixtureDef();
sd.shape = shape;
sd.friction = 0.3f;
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
ground.CreateFixture(sd);
}
// Small triangle
b2Vec2[] vertices = new b2Vec2[3];
vertices[0].Set(-1.0f, 0.0f);
vertices[1].Set(1.0f, 0.0f);
vertices[2].Set(0.0f, 2.0f);
b2PolygonShape polygon = new b2PolygonShape();
polygon.Set(vertices, 3);
b2FixtureDef triangleShapeDef = new b2FixtureDef();
triangleShapeDef.shape = polygon;
triangleShapeDef.density = 1.0f;
triangleShapeDef.filter.groupIndex = k_smallGroup;
triangleShapeDef.filter.categoryBits = k_triangleCategory;
triangleShapeDef.filter.maskBits = k_triangleMask;
b2BodyDef triangleBodyDef = new b2BodyDef();
triangleBodyDef.type = b2BodyType.b2_dynamicBody;
triangleBodyDef.position.Set(-5.0f, 2.0f);
b2Body body1 = m_world.CreateBody(triangleBodyDef);
body1.CreateFixture(triangleShapeDef);
// Large triangle (recycle definitions)
vertices[0] *= 2.0f;
vertices[1] *= 2.0f;
vertices[2] *= 2.0f;
polygon.Set(vertices, 3);
triangleShapeDef.filter.groupIndex = k_largeGroup;
triangleBodyDef.position.Set(-5.0f, 6.0f);
triangleBodyDef.fixedRotation = true; // look at me!
b2Body body2 = m_world.CreateBody(triangleBodyDef);
body2.CreateFixture(triangleShapeDef);
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(-5.0f, 10.0f);
b2Body body = m_world.CreateBody(bd);
b2PolygonShape p = new b2PolygonShape();
p.SetAsBox(0.5f, 1.0f);
body.CreateFixture(p, 1.0f);
b2PrismaticJointDef jd = new b2PrismaticJointDef();
jd.BodyA = body2;
jd.BodyB = body;
jd.enableLimit = true;
jd.localAnchorA.Set(0.0f, 4.0f);
jd.localAnchorB.SetZero();
jd.localAxisA.Set(0.0f, 1.0f);
jd.lowerTranslation = -1.0f;
jd.upperTranslation = 1.0f;
m_world.CreateJoint(jd);
}
// Small box
polygon.SetAsBox(1.0f, 0.5f);
b2FixtureDef boxShapeDef = new b2FixtureDef();
boxShapeDef.shape = polygon;
boxShapeDef.density = 1.0f;
boxShapeDef.restitution = 0.1f;
boxShapeDef.filter.groupIndex = k_smallGroup;
boxShapeDef.filter.categoryBits = k_boxCategory;
boxShapeDef.filter.maskBits = k_boxMask;
b2BodyDef boxBodyDef = new b2BodyDef();
boxBodyDef.type = b2BodyType.b2_dynamicBody;
boxBodyDef.position.Set(0.0f, 2.0f);
b2Body body3 = m_world.CreateBody(boxBodyDef);
body3.CreateFixture(boxShapeDef);
// Large box (recycle definitions)
polygon.SetAsBox(2.0f, 1.0f);
boxShapeDef.filter.groupIndex = k_largeGroup;
boxBodyDef.position.Set(0.0f, 6.0f);
b2Body body4 = m_world.CreateBody(boxBodyDef);
body4.CreateFixture(boxShapeDef);
//.........这里部分代码省略.........
示例12: Cantilever
public Cantilever()
{
b2Body ground = null;
{
b2BodyDef bd = new b2BodyDef();
ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-40.0f, 0.0f), new b2Vec2(40.0f, 0.0f));
ground.CreateFixture(shape, 0.0f);
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
b2WeldJointDef jd = new b2WeldJointDef();
b2Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(-14.5f + 1.0f * i, 5.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
b2Vec2 anchor = new b2Vec2(-15.0f + 1.0f * i, 5.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
prevBody = body;
}
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(1.0f, 0.125f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
b2WeldJointDef jd = new b2WeldJointDef();
jd.frequencyHz = 5.0f;
jd.dampingRatio = 0.7f;
b2Body prevBody = ground;
for (int i = 0; i < 3; ++i)
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(-14.0f + 2.0f * i, 15.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
b2Vec2 anchor = new b2Vec2(-15.0f + 2.0f * i, 15.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
prevBody = body;
}
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
b2FixtureDef fd = new b2FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
b2WeldJointDef jd = new b2WeldJointDef();
b2Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
bd.position.Set(-4.5f + 1.0f * i, 5.0f);
b2Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
if (i > 0)
{
b2Vec2 anchor = new b2Vec2(-5.0f + 1.0f * i, 5.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
}
prevBody = body;
}
}
{
b2PolygonShape shape = new b2PolygonShape();
//.........这里部分代码省略.........
示例13: j2b2Fixture
//.........这里部分代码省略.........
if (edgeShape.HasVertex0)
edgeShape.Vertex0 = jsonToVec("vertex0", edgeValue);
if (edgeShape.HasVertex3)
edgeShape.Vertex3 = jsonToVec("vertex3", edgeValue);
fixtureDef.shape = edgeShape;
fixture = body.CreateFixture(fixtureDef);
}
else if (null != fixtureValue["loop"])
{// support old
// format (r197)
JObject chainValue = (JObject)fixtureValue["loop"];
b2ChainShape chainShape = new b2ChainShape();
int numVertices = ((JArray)chainValue["x"]).Count;
b2Vec2[] vertices = new b2Vec2[numVertices];
for (int i = 0; i < numVertices; i++)
vertices[i] = jsonToVec("vertices", chainValue, i);
chainShape.CreateLoop(vertices, numVertices);
fixtureDef.shape = chainShape;
fixture = body.CreateFixture(fixtureDef);
}
else if (null != fixtureValue["chain"])
{
// FPE. See http://www.box2d.org/forum/viewtopic.php?f=4&t=7973&p=35363
JObject chainValue = (JObject)fixtureValue["chain"];
b2ChainShape chainShape = new b2ChainShape();
int numVertices = ((JArray)chainValue["vertices"]["x"]).Count;
var vertices = new b2Vec2[numVertices];
for (int i = 0; i < numVertices; i++)
vertices[i] = jsonToVec("vertices", chainValue, i);
chainShape.CreateChain(vertices, numVertices);
chainShape.HasPrevVertex = chainValue["hasPrevVertex"] == null ? false : (bool)chainValue["hasPrevVertex"];
chainShape.HasNextVertex = chainValue["hasNextVertex"] == null ? false : (bool)chainValue["hasNextVertex"];
if (chainShape.HasPrevVertex)
chainShape.PrevVertex = (jsonToVec("prevVertex", chainValue));
if (chainShape.HasNextVertex)
chainShape.NextVertex = (jsonToVec("nextVertex", chainValue));
fixtureDef.shape = chainShape;
fixture = body.CreateFixture(fixtureDef);
}
else if (null != fixtureValue["polygon"])
{
JObject polygonValue = (JObject)fixtureValue["polygon"];
b2Vec2[] vertices = new b2Vec2[b2Settings.b2_maxPolygonVertices];
int numVertices = ((JArray)polygonValue["vertices"]["x"]).Count;
if (numVertices > b2Settings.b2_maxPolygonVertices)
{
Console.WriteLine("Ignoring polygon fixture with too many vertices.");
}
else if (numVertices < 2)
{
Console.WriteLine("Ignoring polygon fixture less than two vertices.");
}
else if (numVertices == 2)
{
Console.WriteLine("Creating edge shape instead of polygon with two vertices.");
b2EdgeShape edgeShape = new b2EdgeShape();
edgeShape.Vertex1 = jsonToVec("vertices", polygonValue, 0);
edgeShape.Vertex2 = jsonToVec("vertices", polygonValue, 1);
fixtureDef.shape = edgeShape;
fixture = body.CreateFixture(fixtureDef);
}
else
{
b2PolygonShape polygonShape = new b2PolygonShape();
for (int i = 0; i < numVertices; i++)
vertices[i] = jsonToVec("vertices", polygonValue, i);
polygonShape.Set(vertices, numVertices);
fixtureDef.shape = polygonShape;
fixture = body.CreateFixture(fixtureDef);
}
}
String fixtureName = fixtureValue["name"] == null ? "" : fixtureValue["name"].ToString();
if (fixtureName != "")
{
SetFixtureName(fixture, fixtureName);
}
return fixture;
}示例14: CharacterCollision
public CharacterCollision()
{
// Ground body
{
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-20.0f, 0.0f), new b2Vec2(20.0f, 0.0f));
ground.CreateFixture(shape, 0.0f);
}
// Collinear edges with no adjacency information.
// This shows the problematic case where a box shape can hit
// an internal vertex.
{
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-8.0f, 1.0f), new b2Vec2(-6.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
shape.Set(new b2Vec2(-6.0f, 1.0f), new b2Vec2(-4.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
shape.Set(new b2Vec2(-4.0f, 1.0f), new b2Vec2(-2.0f, 1.0f));
ground.CreateFixture(shape, 0.0f);
}
// Chain shape
{
b2BodyDef bd = new b2BodyDef();
bd.angle = 0.25f * b2Settings.b2_pi;
b2Body ground = m_world.CreateBody(bd);
b2Vec2[] vs = new b2Vec2[4];
vs[0].Set(5.0f, 7.0f);
vs[1].Set(6.0f, 8.0f);
vs[2].Set(7.0f, 8.0f);
vs[3].Set(8.0f, 7.0f);
b2ChainShape shape = new b2ChainShape();
shape.CreateChain(vs, 4);
ground.CreateFixture(shape, 0.0f);
}
// Square tiles. This shows that adjacency shapes may
// have non-smooth collision. There is no solution
// to this problem.
{
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(1.0f, 1.0f, new b2Vec2(4.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
shape.SetAsBox(1.0f, 1.0f, new b2Vec2(6.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
shape.SetAsBox(1.0f, 1.0f, new b2Vec2(8.0f, 3.0f), 0.0f);
ground.CreateFixture(shape, 0.0f);
}
// Square made from an edge loop. Collision should be smooth.
{
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
b2Vec2[] vs = new b2Vec2[4];
vs[0].Set(-1.0f, 3.0f);
vs[1].Set(1.0f, 3.0f);
vs[2].Set(1.0f, 5.0f);
vs[3].Set(-1.0f, 5.0f);
b2ChainShape shape = new b2ChainShape();
shape.CreateLoop(vs, 4);
ground.CreateFixture(shape, 0.0f);
}
// Edge loop. Collision should be smooth.
{
b2BodyDef bd = new b2BodyDef();
bd.position.Set(-10.0f, 4.0f);
b2Body ground = m_world.CreateBody(bd);
b2Vec2[] vs = new b2Vec2[10];
vs[0].Set(0.0f, 0.0f);
vs[1].Set(6.0f, 0.0f);
vs[2].Set(6.0f, 2.0f);
vs[3].Set(4.0f, 1.0f);
vs[4].Set(2.0f, 2.0f);
vs[5].Set(0.0f, 2.0f);
vs[6].Set(-2.0f, 2.0f);
vs[7].Set(-4.0f, 3.0f);
vs[8].Set(-6.0f, 2.0f);
vs[9].Set(-6.0f, 0.0f);
b2ChainShape shape = new b2ChainShape();
shape.CreateLoop(vs, 10);
ground.CreateFixture(shape, 0.0f);
}
// Square character 1
{
b2BodyDef bd = new b2BodyDef();
//.........这里部分代码省略.........
示例15: CollisionProcessing
public CollisionProcessing()
{
// Ground body
{
b2EdgeShape shape = new b2EdgeShape();
shape.Set(new b2Vec2(-50.0f, 0.0f), new b2Vec2(50.0f, 0.0f));
b2FixtureDef sd = new b2FixtureDef();
sd.shape = shape;
b2BodyDef bd = new b2BodyDef();
b2Body ground = m_world.CreateBody(bd);
ground.CreateFixture(sd);
}
float xLo = -5.0f, xHi = 5.0f;
float yLo = 2.0f, yHi = 35.0f;
// Small triangle
b2Vec2[] vertices = new b2Vec2[3];
vertices[0].Set(-1.0f, 0.0f);
vertices[1].Set(1.0f, 0.0f);
vertices[2].Set(0.0f, 2.0f);
b2PolygonShape polygon = new b2PolygonShape();
polygon.Set(vertices, 3);
b2FixtureDef triangleShapeDef = new b2FixtureDef();
triangleShapeDef.shape = polygon;
triangleShapeDef.density = 1.0f;
b2BodyDef triangleBodyDef = new b2BodyDef();
triangleBodyDef.type = b2BodyType.b2_dynamicBody;
triangleBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body1 = m_world.CreateBody(triangleBodyDef);
body1.CreateFixture(triangleShapeDef);
// Large triangle (recycle definitions)
vertices[0] *= 2.0f;
vertices[1] *= 2.0f;
vertices[2] *= 2.0f;
polygon.Set(vertices, 3);
triangleBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body2 = m_world.CreateBody(triangleBodyDef);
body2.CreateFixture(triangleShapeDef);
// Small box
polygon.SetAsBox(1.0f, 0.5f);
b2FixtureDef boxShapeDef = new b2FixtureDef();
boxShapeDef.shape = polygon;
boxShapeDef.density = 1.0f;
b2BodyDef boxBodyDef = new b2BodyDef();
boxBodyDef.type = b2BodyType.b2_dynamicBody;
boxBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body3 = m_world.CreateBody(boxBodyDef);
body3.CreateFixture(boxShapeDef);
// Large box (recycle definitions)
polygon.SetAsBox(2.0f, 1.0f);
boxBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body4 = m_world.CreateBody(boxBodyDef);
body4.CreateFixture(boxShapeDef);
// Small circle
b2CircleShape circle = new b2CircleShape();
circle.Radius = 1.0f;
b2FixtureDef circleShapeDef = new b2FixtureDef();
circleShapeDef.shape = circle;
circleShapeDef.density = 1.0f;
b2BodyDef circleBodyDef = new b2BodyDef();
circleBodyDef.type = b2BodyType.b2_dynamicBody;
circleBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body5 = m_world.CreateBody(circleBodyDef);
body5.CreateFixture(circleShapeDef);
// Large circle
circle.Radius *= 2.0f;
circleBodyDef.position.Set(Rand.RandomFloat(xLo, xHi), Rand.RandomFloat(yLo, yHi));
b2Body body6 = m_world.CreateBody(circleBodyDef);
body6.CreateFixture(circleShapeDef);
}