@Override
public void create() {
Arrays.fill(heights, defaultHeight);
Core.interval(.0005).onEvent(this::step).addChild(this);
// onUpdate(dt -> {
// Util.repeat(detail, i -> heights[i] += dt * speeds[i]);
// Util.repeat(detail - 1, i -> {
// deltas[i] = heights[i + 1] - heights[i];
// speeds[i] += deltas[i] * dt * 3000;
// speeds[i + 1] -= deltas[i] * dt * 3000;
// });
// Util.repeat(detail, i -> speeds[i] = speeds[i] * Math.pow(.1, dt * dt) + dt * 10 *
// (defaultHeight - heights[i]));
// Util.repeat(detail - 1, i -> {
// heights[i] += deltas[i] * dt;
// heights[i + 1] -= deltas[i] * dt;
// });
// });
onRender(
() -> {
glDisable(GL_TEXTURE_2D);
glBegin(GL_TRIANGLE_STRIP);
Util.repeat(
detail,
i -> {
double x = position.x + width * (2. * i / detail - 1);
new Color4(0, 0, .6).glColor();
new Vec2(x, bottom).glVertex();
new Color4(0, .2, 1).glColor();
new Vec2(x, heights[i]).glVertex();
});
glEnd();
});
Core.renderLayer(1)
.onEvent(
() -> {
glDisable(GL_TEXTURE_2D);
glBegin(GL_TRIANGLE_STRIP);
Util.repeat(
detail,
i -> {
double x = position.x + width * (2. * i / detail - 1);
new Color4(0, 0, .6, .5).glColor();
new Vec2(x, bottom).glVertex();
new Color4(0, .2, 1, .5).glColor();
new Vec2(x, heights[i]).glVertex();
});
glEnd();
})
.addChild(this);
}
public void step() {
Util.repeat(detail, i -> heights[i] += .01 * speeds[i]);
Util.repeat(
detail - 1,
i -> {
deltas[i] = heights[i + 1] - heights[i];
speeds[i] += deltas[i];
speeds[i + 1] -= deltas[i];
});
Util.repeat(
detail,
i -> speeds[i] = speeds[i] * Math.pow(.5, .001) + .01 * (defaultHeight - heights[i]));
Util.repeat(
detail - 1,
i -> {
heights[i] += deltas[i] * .01;
heights[i + 1] -= deltas[i] * .01;
});
}
public void splash(double x, double strength, ParticleEmitter drops) {
int index = indexOf(x);
speeds[index] = strength * strength / 500;
Util.repeat(
(int) (strength * strength) / 2000,
() -> {
Vec2 dir = Vec2.fromPolar(Math.random(), Math.random() * Math.PI);
drops.particles.add(
new Particle(
new Vec2(x, heights[index]).add(dir), dir.multiply(50 * Math.sqrt(strength))));
});
}
public static void addParticle(int num, Supplier<Particle> s) {
Util.repeat(num, () -> ALL.add(s.get()));
}