Example usage for com.badlogic.gdx.math Vector2 mul

Introduction

In this page you can find the example usage for com.badlogic.gdx.math Vector2 mul.

Prototype

public Vector2 mul(Matrix3 mat) 

Source Link

Document

Left-multiplies this vector by the given matrix

Usage

From source file:com.hajnar.GravityShip.GameObjects.GameCamera.java

License:Apache License

public Vector2 follow(Player player) {
    Vector2 playerVelocity = player.getBody().getLinearVelocity();
    offset.add(-offset.x / 20f, -offset.y / 20f);
    offset.add(playerVelocity.mul(1.2f));
    if (offset.x > 200)
        offset.x = 200;//from   w w  w  .j a va2s .  co m
    else if (offset.x < -200)
        offset.x = -200;
    if (offset.y > 150)
        offset.y = 150;
    else if (offset.y < -150)
        offset.y = -150;
    cameraTranslation.set(player.getBody().getPosition().mul(Helper.BOX_TO_WORLD).sub(position.x - offset.x,
            position.y - offset.y));
    translate(cameraTranslation);
    return cameraTranslation;
}

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From source file:com.hajnar.GravityShip.GameObjects.GameCamera.java

License:Apache License

public Vector2 followWithZooming(Player player, float delta) {
    Vector2 playerVelocity = player.getBody().getLinearVelocity();
    float playerVelocityLen = playerVelocity.len();
    offset.add(-offset.x / 20f, -offset.y / 20f);
    offset.add(playerVelocity.mul(1.2f));
    if (offset.x > 200)
        offset.x = 200;//w  ww. j  a v a2  s  .  c  o m
    else if (offset.x < -200)
        offset.x = -200;
    if (offset.y > 150)
        offset.y = 150;
    else if (offset.y < -150)
        offset.y = -150;
    cameraTranslation.set(player.getBody().getPosition().mul(Helper.BOX_TO_WORLD).sub(position.x - offset.x,
            position.y - offset.y));
    translate(cameraTranslation);
    if (playerVelocityLen < 20)
        if (playerVelocityBefore < playerVelocityLen && playerVelocityLen > 2)
            changeZoom(0.27f * delta);
        else
            changeZoom(-0.27f * delta);
    playerVelocityBefore = playerVelocityLen;
    return cameraTranslation;

}

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From source file:com.hajnar.GravityShip.GameWorld.java

License:Apache License

public void updateBlackHoles(float delta) {
    int len = blackHoles.size();
    for (int i = 0; i < len; i++) {
        blackHoles.get(i).update(delta);
        Vector2 playerPosition = player.getBody().getPosition();
        Vector2 holePosition = blackHoles.get(i).getBody().getPosition();
        Vector2 gravityVector = (holePosition.sub(playerPosition));
        float gravityForce = blackHoles.get(i).getStrength() / gravityVector.len2();
        gravityVector.nor();/*  w w  w  .j  av a 2 s  .c  o  m*/
        gravityVector.mul(gravityForce);
        player.getBody().applyForceToCenter(gravityVector);
    }
}

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From source file:com.sertaogames.cactus2d.components.BoxCollider.java

License:Open Source License

public BoxCollider(Vector2 size, Vector2 offset) {
    this.offset = offset;
    size.mul(Cactus2DApplication.INV_PHYSICS_SCALE * 0.5f);
    PolygonShape poly = new PolygonShape();
    poly.setAsBox(size.x, size.y);//from   w ww.j  ava2  s .  c om
    shape = poly;
}

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From source file:com.sertaogames.cactus2d.components.TileMapPhysics.java

License:Open Source License

private void createBodyFromObject(Vector2 pos, Vector2 size) {
    Body rigidbody;//from  www . ja  v a  2 s .  co  m
    PolygonShape groundPoly = new PolygonShape();

    size.mul(Cactus2DApplication.INV_PHYSICS_SCALE * 0.5f);
    groundPoly.setAsBox(size.x, size.y);

    BodyDef groundBodyDef = new BodyDef();
    groundBodyDef.fixedRotation = true;
    groundBodyDef.type = BodyType.StaticBody;
    rigidbody = gameObject.world.createBody(groundBodyDef);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = groundPoly;
    fixtureDef.filter.groupIndex = 0;
    fixtureDef.filter.categoryBits = 0x4;
    rigidbody.createFixture(fixtureDef);
    groundPoly.dispose();

    pos.add(transform.getPosition());
    pos.mul(Cactus2DApplication.INV_PHYSICS_SCALE);
    rigidbody.setTransform(pos, transform.getAngle());
    rigidbody.setUserData(gameObject);
    bodies.add(rigidbody);
}

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From source file:com.sertaogames.cactus2d.components.TileMapPhysics.java

License:Open Source License

private void createBodyFromBlocks(int begin, int last, int i) {
    Vector2 tileSize = new Vector2(tm.tilemap.tileWidth, tm.tilemap.tileHeight);

    Body rigidbody;//from  w  ww  .  j ava 2 s . c  om
    PolygonShape groundPoly = new PolygonShape();
    int width = last - begin + 1;
    float height = tileSize.y;
    width *= tileSize.x;
    // System.out.println("i: "+i+" width: "+width);
    Vector2 temp = new Vector2(width, tileSize.y);
    temp.mul(Cactus2DApplication.INV_PHYSICS_SCALE * 0.5f);
    groundPoly.setAsBox(temp.x, temp.y);

    BodyDef groundBodyDef = new BodyDef();
    groundBodyDef.fixedRotation = true;
    groundBodyDef.type = BodyType.StaticBody;
    rigidbody = gameObject.world.createBody(groundBodyDef);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = groundPoly;
    fixtureDef.filter.groupIndex = 0;
    fixtureDef.filter.categoryBits = 0x4;
    rigidbody.createFixture(fixtureDef);
    groundPoly.dispose();

    temp.set(
            new Vector2(begin * tileSize.x + width / 2, (tm.tilemap.height - i) * tileSize.y - tileSize.y / 2));
    temp.add(transform.getPosition());
    temp.mul(Cactus2DApplication.INV_PHYSICS_SCALE);
    rigidbody.setTransform(temp, transform.getAngle());
    rigidbody.setUserData(gameObject);
    bodies.add(rigidbody);
}

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From source file:fr.plnech.igem.game.AbstractGameActivity.java

License:Open Source License

public void setPhysicsCoeff(float coeff) {
    final Vector2 gravity = physicsWorld.getGravity();
    final Vector2 physicsVector = currentGame.getPhysicsVector();
    final float minCoeff = 0.5f;
    if (gravity.x < physicsVector.x * minCoeff || gravity.y < physicsVector.y * minCoeff) {
        return;/*from w  ww  . j a v a2s  .  c o m*/
    }
    physicsWorld.setGravity(gravity.mul(coeff));
}

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