@Override
public void render() {
Gdx.gl.glViewport(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
Gdx.gl.glClearColor(0.2f, 0.2f, 0.2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
if (Gdx.input.isTouched()) {
stage.screenToStageCoordinates(stageCoords.set(Gdx.input.getX(), Gdx.input.getY()));
Actor actor = stage.hit(stageCoords.x, stageCoords.y, true);
if (actor instanceof Image)
((Image) actor)
.setColor(
(float) Math.random(),
(float) Math.random(),
(float) Math.random(),
0.5f + 0.5f * (float) Math.random());
}
Array<Actor> actors = stage.getActors();
int len = actors.size;
if (rotateSprites) {
for (int i = 0; i < len; i++) actors.get(i).rotateBy(Gdx.graphics.getDeltaTime() * 10);
}
scale += vScale * Gdx.graphics.getDeltaTime();
if (scale > 1) {
scale = 1;
vScale = -vScale;
}
if (scale < 0.5f) {
scale = 0.5f;
vScale = -vScale;
}
len = images.size();
for (int i = 0; i < len; i++) {
Image img = images.get(i);
if (rotateSprites) img.rotateBy(-40 * Gdx.graphics.getDeltaTime());
else img.setRotation(0);
if (scaleSprites) {
img.setScale(scale);
} else {
img.setScale(1);
}
img.invalidate();
}
stage.draw();
renderer.begin(ShapeType.Point);
renderer.setColor(1, 0, 0, 1);
len = actors.size;
for (int i = 0; i < len; i++) {
Group group = (Group) actors.get(i);
renderer.point(group.getX() + group.getOriginX(), group.getY() + group.getOriginY(), 0);
}
renderer.end();
fps.setText(
"fps: "
+ Gdx.graphics.getFramesPerSecond()
+ ", actors "
+ images.size()
+ ", groups "
+ actors.size);
ui.draw();
}
@Override
public void render() {
// first we update the world. For simplicity
// we use the delta time provided by the Graphics
// instance. Normally you'll want to fix the time
// step.
long start = TimeUtils.nanoTime();
world.step(Gdx.graphics.getDeltaTime(), 8, 3);
float updateTime = (TimeUtils.nanoTime() - start) / 1000000000.0f;
// next we clear the color buffer and set the camera
// matrices
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
camera.update();
// next we render the ground body
renderBox(groundBody, 50, 1);
// next we render each box via the SpriteBatch.
// for this we have to set the projection matrix of the
// spritebatch to the camera's combined matrix. This will
// make the spritebatch work in world coordinates
batch.getProjectionMatrix().set(camera.combined);
batch.begin();
for (int i = 0; i < boxes.size(); i++) {
Body box = boxes.get(i);
Vector2 position = box.getPosition(); // that's the box's center position
float angle =
MathUtils.radiansToDegrees * box.getAngle(); // the rotation angle around the center
batch.draw(
textureRegion,
position.x - 1,
position.y - 1, // the bottom left corner of the box, unrotated
1f,
1f, // the rotation center relative to the bottom left corner of the box
2,
2, // the width and height of the box
1,
1, // the scale on the x- and y-axis
angle); // the rotation angle
}
batch.end();
// next we use the debug renderer. Note that we
// simply apply the camera again and then call
// the renderer. the camera.apply() call is actually
// not needed as the opengl matrices are already set
// by the spritebatch which in turn uses the camera matrices :)
debugRenderer.render(world, camera.combined);
// finally we render all contact points
renderer.setProjectionMatrix(camera.combined);
renderer.begin(ShapeType.Point);
renderer.setColor(0, 1, 0, 1);
for (int i = 0; i < world.getContactCount(); i++) {
Contact contact = world.getContactList().get(i);
// we only render the contact if it actually touches
if (contact.isTouching()) {
// get the world manifold from which we get the
// contact points. A manifold can have 0, 1 or 2
// contact points.
WorldManifold manifold = contact.getWorldManifold();
int numContactPoints = manifold.getNumberOfContactPoints();
for (int j = 0; j < numContactPoints; j++) {
Vector2 point = manifold.getPoints()[j];
renderer.point(point.x, point.y, 0);
}
}
}
renderer.end();
// finally we render the time it took to update the world
// for this we have to set the projection matrix again, so
// we work in pixel coordinates
batch
.getProjectionMatrix()
.setToOrtho2D(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
batch.begin();
font.draw(
batch, "fps: " + Gdx.graphics.getFramesPerSecond() + " update time: " + updateTime, 0, 20);
batch.end();
}