Examples with CircleShape com.badlogic.gdx.physics.box2d.CircleShape used on opensource projects

Example 6 with CircleShape

use of com.badlogic.gdx.physics.box2d.CircleShape in project commons-gdx by gemserk.

the class FixtureDefBuilder method circleShape.

public FixtureDefBuilder circleShape(Vector2 center, float radius) {
    CircleShape shape = new CircleShape();
    shape.setRadius(radius);
    shape.setPosition(center);
    fixtureDef.shape = shape;
    return this;
}

Example 7 with CircleShape

use of com.badlogic.gdx.physics.box2d.CircleShape in project libgdx by libgdx.

the class SimpleTest method createWorld.

@Override
protected void createWorld(World world) {
    // next we create a static ground platform. This platform
    // is not moveable and will not react to any influences from
    // outside. It will however influence other bodies. First we
    // create a PolygonShape that holds the form of the platform.
    // it will be 100 meters wide and 2 meters high, centered
    // around the origin
    PolygonShape groundPoly = new PolygonShape();
    groundPoly.setAsBox(50, 1);
    // next we create the body for the ground platform. It's
    // simply a static body.
    BodyDef groundBodyDef = new BodyDef();
    groundBodyDef.type = BodyType.StaticBody;
    groundBody = world.createBody(groundBodyDef);
    // finally we add a fixture to the body using the polygon
    // defined above. Note that we have to dispose PolygonShapes
    // and CircleShapes once they are no longer used. This is the
    // only time you have to care explicitly for memomry managment.
    groundBody.createFixture(groundPoly, 10);
    groundPoly.dispose();
    // next we create 50 boxes at random locations above the ground
    // body. First we create a nice polygon representing a box 2 meters
    // wide and high.
    PolygonShape boxPoly = new PolygonShape();
    boxPoly.setAsBox(1, 1);
    // body. Note that we reuse the polygon for each body fixture.
    for (int i = 0; i < 20; i++) {
        // Create the BodyDef, set a random position above the
        // ground and create a new body
        BodyDef boxBodyDef = new BodyDef();
        boxBodyDef.type = BodyType.DynamicBody;
        boxBodyDef.position.x = -24 + (float) (Math.random() * 48);
        boxBodyDef.position.y = 10 + (float) (Math.random() * 100);
        Body boxBody = world.createBody(boxBodyDef);
        // add the boxPoly shape as a fixture
        boxBody.createFixture(boxPoly, 10);
    }
    // we are done, all that's left is disposing the boxPoly
    boxPoly.dispose();
    // next we add a few more circles
    CircleShape circleShape = new CircleShape();
    circleShape.setRadius(1);
    for (int i = 0; i < 10; i++) {
        BodyDef circleBodyDef = new BodyDef();
        circleBodyDef.type = BodyType.DynamicBody;
        circleBodyDef.position.x = -24 + (float) (Math.random() * 48);
        circleBodyDef.position.y = 10 + (float) (Math.random() * 100);
        Body circleBody = world.createBody(circleBodyDef);
        // add the boxPoly shape as a fixture
        circleBody.createFixture(circleShape, 10);
    }
    circleShape.dispose();
}

Example 8 with CircleShape

use of com.badlogic.gdx.physics.box2d.CircleShape in project libgdx by libgdx.

the class VerticalStack method keyDown.

@Override
public boolean keyDown(int keyCode) {
    if (keyCode == Input.Keys.COMMA) {
        if (m_bullet != null) {
            world.destroyBody(m_bullet);
            m_bullet = null;
        }
        {
            CircleShape shape = new CircleShape();
            shape.setRadius(0.25f);
            FixtureDef fd = new FixtureDef();
            fd.shape = shape;
            fd.density = 20.0f;
            fd.restitution = 0.05f;
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.bullet = true;
            bd.position.set(-31, 5);
            m_bullet = world.createBody(bd);
            m_bullet.createFixture(fd);
            m_bullet.setLinearVelocity(new Vector2(400, 0));
        }
    }
    return false;
}

Example 9 with CircleShape

use of com.badlogic.gdx.physics.box2d.CircleShape in project libgdx by libgdx.

the class Bridge method createWorld.

@Override
protected void createWorld(World world) {
    Body ground;
    {
        BodyDef bd = new BodyDef();
        ground = world.createBody(bd);
        EdgeShape shape = new EdgeShape();
        shape.set(new Vector2(-40, 0), new Vector2(40.0f, 0));
        ground.createFixture(shape, 0);
        shape.dispose();
    }
    {
        PolygonShape shape = new PolygonShape();
        shape.setAsBox(0.5f, 0.125f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 20.0f;
        fd.friction = 0.2f;
        RevoluteJointDef jd = new RevoluteJointDef();
        Body prevBody = ground;
        for (int i = 0; i < e_count; i++) {
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.position.set(-14.5f + 1.0f * i, 5.0f);
            Body body = world.createBody(bd);
            body.createFixture(fd);
            Vector2 anchor = new Vector2(-15.0f + 1.0f * i, 5.0f);
            jd.initialize(prevBody, body, anchor);
            world.createJoint(jd);
            prevBody = body;
        }
        Vector2 anchor = new Vector2(-15.0f + 1.0f * e_count, 5.0f);
        jd.initialize(prevBody, ground, anchor);
        world.createJoint(jd);
        shape.dispose();
    }
    for (int i = 0; i < 2; i++) {
        Vector2[] vertices = new Vector2[3];
        vertices[0] = new Vector2(-0.5f, 0);
        vertices[1] = new Vector2(0.5f, 0);
        vertices[2] = new Vector2(0, 1.5f);
        PolygonShape shape = new PolygonShape();
        shape.set(vertices);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 1.0f;
        BodyDef bd = new BodyDef();
        bd.type = BodyType.DynamicBody;
        bd.position.set(-8.0f + 8.0f * i, 12.0f);
        Body body = world.createBody(bd);
        body.createFixture(fd);
        shape.dispose();
    }
    for (int i = 0; i < 3; i++) {
        CircleShape shape = new CircleShape();
        shape.setRadius(0.5f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 1.0f;
        BodyDef bd = new BodyDef();
        bd.type = BodyType.DynamicBody;
        bd.position.set(-6.0f + 6.0f * i, 10.0f);
        Body body = world.createBody(bd);
        body.createFixture(fd);
        shape.dispose();
    }
}

Example 10 with CircleShape

use of com.badlogic.gdx.physics.box2d.CircleShape in project libgdx by libgdx.

the class Cantilever method createWorld.

@Override
protected void createWorld(World world) {
    Body ground;
    {
        BodyDef bd = new BodyDef();
        ground = world.createBody(bd);
        EdgeShape shape = new EdgeShape();
        shape.set(new Vector2(-40, 0), new Vector2(40, 0));
        ground.createFixture(shape, 0);
        shape.dispose();
    }
    {
        PolygonShape shape = new PolygonShape();
        shape.setAsBox(0.5f, 0.125f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 20.0f;
        WeldJointDef jd = new WeldJointDef();
        Body prevBody = ground;
        for (int i = 0; i < e_count; i++) {
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.position.set(-14.5f + 1.0f * i, 5.0f);
            Body body = world.createBody(bd);
            body.createFixture(fd);
            Vector2 anchor = new Vector2(-15.0f + 1 * i, 5.0f);
            jd.initialize(prevBody, body, anchor);
            world.createJoint(jd);
            prevBody = body;
        }
        shape.dispose();
    }
    {
        PolygonShape shape = new PolygonShape();
        shape.setAsBox(0.5f, 0.125f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 20.0f;
        WeldJointDef jd = new WeldJointDef();
        Body prevBody = ground;
        for (int i = 0; i < e_count; i++) {
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.position.set(-14.5f + 1.0f * i, 15.0f);
            bd.gravityScale = 10.0f;
            Body body = world.createBody(bd);
            body.createFixture(fd);
            Vector2 anchor = new Vector2(-15.0f + 1.0f * i, 15.0f);
            jd.initialize(prevBody, body, anchor);
            world.createJoint(jd);
            prevBody = body;
        }
        shape.dispose();
    }
    {
        PolygonShape shape = new PolygonShape();
        shape.setAsBox(0.5f, 0.125f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 20.0f;
        WeldJointDef jd = new WeldJointDef();
        Body prevBody = ground;
        for (int i = 0; i < e_count; i++) {
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.position.set(-4.5f + 1.0f * i, 5.0f);
            Body body = world.createBody(bd);
            body.createFixture(fd);
            if (i > 0) {
                Vector2 anchor = new Vector2(-5.0f + 1.0f * i, 5.0f);
                jd.initialize(prevBody, body, anchor);
                world.createJoint(jd);
            }
            prevBody = body;
        }
        shape.dispose();
    }
    {
        PolygonShape shape = new PolygonShape();
        shape.setAsBox(0.5f, 0.125f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 20.0f;
        WeldJointDef jd = new WeldJointDef();
        Body prevBody = ground;
        for (int i = 0; i < e_count; i++) {
            BodyDef bd = new BodyDef();
            bd.type = BodyType.DynamicBody;
            bd.position.set(5.5f + 1.0f * i, 10.0f);
            bd.gravityScale = 10.0f;
            Body body = world.createBody(bd);
            body.createFixture(fd);
            if (i > 0) {
                Vector2 anchor = new Vector2(5.0f + 1.0f * i, 10.0f);
                jd.initialize(prevBody, body, anchor);
                world.createJoint(jd);
            }
            prevBody = body;
        }
        shape.dispose();
    }
    for (int i = 0; i < 2; i++) {
        Vector2[] vertices = new Vector2[3];
        vertices[0] = new Vector2(-0.5f, 0);
        vertices[1] = new Vector2(0.5f, 0);
        vertices[2] = new Vector2(0, 1.5f);
        PolygonShape shape = new PolygonShape();
        shape.set(vertices);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 1.0f;
        BodyDef bd = new BodyDef();
        bd.type = BodyType.DynamicBody;
        bd.position.set(-8.0f + 8.0f * i, 12.0f);
        Body body = world.createBody(bd);
        body.createFixture(fd);
        shape.dispose();
    }
    for (int i = 0; i < 2; i++) {
        CircleShape shape = new CircleShape();
        shape.setRadius(0.5f);
        FixtureDef fd = new FixtureDef();
        fd.shape = shape;
        fd.density = 1.0f;
        BodyDef bd = new BodyDef();
        bd.type = BodyType.DynamicBody;
        bd.position.set(-6.0f + 6.0f * i, 10.0f);
        Body body = world.createBody(bd);
        body.createFixture(fd);
        shape.dispose();
    }
}