List of usage examples for com.badlogic.gdx.math Vector2 len
@Override
public float len()
From source file:at.juggle.games.counting.screens.MenuScreen.java
License:Apache License
@Override public void render(float delta) { handleInput();//from w ww . ja v a2s . c o m // camera: cam.update(); batch.setProjectionMatrix(cam.combined); Gdx.gl.glClearColor(0.3f, 0.3f, 0.3f, 1); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); batch.begin(); // draw bgImage ... batch.draw(backgroundImage, 0, 0, CountingGame.GAME_WIDTH, CountingGame.GAME_HEIGHT); for (int i = 0; i < background.length; i++) { for (int j = 0; j < background.length; j++) { if (i != j && background[i] != null && background[j] != null) { Vector2 dist = background[j].dist(background[i]); if (dist.len() < background[j].getHeight()) { float d = (background[i].getHeight() - dist.len()) / background[i].getHeight(); background[j].setPosition(background[j].getX() + dist.x * d, background[j].getY() + dist.y * d); background[i].setPosition(background[i].getX() - dist.x * d, background[i].getY() - dist.y * d); } } } background[i].setY(background[i].getY() + delta * 100f * background[i].getSpeed()); background[i].draw(batch, delta); if (background[i].getY() > CountingGame.GAME_HEIGHT * 1.1f) background[i].setPosition( CountingGame.GAME_WIDTH / 2f + ((float) (Math.random() * CountingGame.GAME_WIDTH / 2f)), -((float) (Math.random() * CountingGame.GAME_HEIGHT))); } // draw buttons ... startMengen.draw(batch); startZaehlen.draw(batch); // draw Strings ... for (int i = 2; i < menuStrings.length; i++) { if (i == currentMenuItem) menuFont.setColor(0.2f, 0.2f, 0.8f, 1f); else menuFont.setColor(0f, 0f, 0f, 1f); String menuString = menuStrings[i]; if (menuString.startsWith(ballons)) menuString += ": " + getNumberOfBallons() + " max."; else if (menuString.startsWith(difficulty)) menuString += ": " + ((CountingGame.difficulty == 0) ? "einfach" : ((CountingGame.difficulty == 1) ? "mittel" : "schwer")); menuFont.draw(batch, menuString, offsetLeft, CountingGame.GAME_HEIGHT - offsetTop - i * offsetY); } batch.end(); }
From source file:com.agateau.pixelwheels.bonus.MissileGuidingSystem.java
License:Open Source License
private void move() { Vector2 velocity = mBody.getLinearVelocity(); float speed = velocity.len(); float delta = MAX_SPEED - speed; float impulse = delta * mBody.getMass(); mTmp.set(impulse, 0).rotateRad(mBody.getAngle()); mBody.applyLinearImpulse(mTmp, mBody.getWorldCenter(), true); Vector2 latImpulse = Box2DUtils.getLateralVelocity(mBody).scl(-mBody.getMass()); mBody.applyLinearImpulse(latImpulse, mBody.getWorldCenter(), true); }
From source file:com.agateau.pixelwheels.racer.Wheel.java
License:Open Source License
private void updateFriction() { // Kill lateral velocity Vector2 impulse = Box2DUtils.getLateralVelocity(mBody).scl(-mBody.getMass()).scl(mMaterial.getGrip()); float maxImpulse = (float) GamePlay.instance.maxLateralImpulse / (mVehicle.isBraking() ? 0.2f : 1); if (mMaterial != Material.ICE && mCanDrift && impulse.len() > maxImpulse) { // Drift// www. java 2s .c om mDrifting = true; if (mSkidmarkCount == 0) { mSkidmarks.add().init(mBody.getWorldCenter()); } mSkidmarkCount = (mSkidmarkCount + 1) % SKIDMARK_INTERVAL; maxImpulse = Math.max(maxImpulse, impulse.len() - DRIFT_IMPULSE_REDUCTION); impulse.limit(maxImpulse); } else if (mDrifting) { mSkidmarks.add().initAsEnd(); mDrifting = false; } mBody.applyLinearImpulse(impulse, mBody.getWorldCenter(), true); // Kill angular velocity mBody.applyAngularImpulse(0.1f * mBody.getInertia() * -mBody.getAngularVelocity(), true); }
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 av a 2 s .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); if (playerVelocityLen < 20) if (playerVelocityBefore < playerVelocityLen && playerVelocityLen > 2) changeZoom(0.27f * delta); else changeZoom(-0.27f * delta); playerVelocityBefore = playerVelocityLen; return cameraTranslation; }
From source file:com.kotcrab.vis.editor.module.physicseditor.util.trace.TextureConverter.java
License:Apache License
public static float DistanceBetweenPointAndPoint(Vector2 point1, Vector2 point2) { Vector2 v = TextureConverter.vectorSub(point1, point2); return v.len(); }
From source file:com.mygdx.game.model.Polygon.java
/** * Project the polygon onto an axis/*from w ww . java2 s .c o m*/ * @param axis the axis onto which the polygon is to be projected. * @return the polygon's projection onto the axis. */ public Vector2 projectPolygon(Vector2 axis) { // set the minimum projection length to the first vertex float min = vertices[0].dot(axis); // the max will be the min for now float max = min; // At first, only the dot products will be compared and stored float dot = 0f; // Start at the second vertex since the first one was already checked for (int i = 1; i < vertices.length; i++) { dot = vertices[i].dot(axis); // Adjust max/min if (dot < min) { min = dot; } if (dot > max) { max = dot; } } // Now that the max and min dot product have been calculated, they can be converted into vector projections, thereby providing the bounds of the polygon's projection the given axis return new Vector2(min / axis.len(), max / axis.len()); }
From source file:com.stercore.code.net.dermetfan.utils.libgdx.box2d.Autopilot.java
License:Apache License
/** calculates the force to continuously {@link Body#applyForce(Vector2, Vector2, boolean) apply} to reach the given {@code destination} and interpolates it based on distance * @param destination the destination to go to * @param force the force to apply/*from ww w . jav a 2 s. c o m*/ * @param distanceScalar the distance at which the given force should be fully applied * @param interpolation the interpolation used to interpolate the given {@code force} based on the {@code distanceScalar} * @return the force to {@link Body#applyForce(Vector2, Vector2, boolean) apply} to navigate to the given {@code destination} * @see #calculateForce(Vector2, Vector2) */ public static Vector2 calculateForce(Vector2 destination, Vector2 force, float distanceScalar, Interpolation interpolation) { return calculateForce(destination, force).scl(interpolation.apply(destination.len() / distanceScalar)); }
From source file:com.tnf.ptm.common.CommonDrawer.java
License:Apache License
public void drawLine(TextureRegion tex, Vector2 p1, Vector2 p2, Color col, float width, boolean precise) { Vector2 v = PtmMath.getVec(p2); v.sub(p1);/*from w w w . ja v a 2 s. co m*/ drawLine(tex, p1.x, p1.y, PtmMath.angle(v, precise), v.len(), col, width); PtmMath.free(v); }
From source file:com.tnf.ptm.common.PtmMath.java
License:Apache License
/** * @return a length of a projection of a vector onto a line defined by angle *///w ww.j a v a 2s . co m public static float project(Vector2 v, float angle) { float angleDiff = angle - PtmMath.angle(v); return v.len() * cos(angleDiff); }
From source file:com.tnf.ptm.common.PtmMath.java
License:Apache License
public static boolean canAccelerate(float accAngle, Vector2 spd) { return spd.len() < Const.MAX_MOVE_SPD || angleDiff(angle(spd), accAngle) > 90; }