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package sample3d;
import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.scene.text.TextAlignment;
import my3d._math3d;
import my3d._math3d.*;
import my3d._shape3d;
import my3d._viewer3d2;
import my3d._viewport3d;
public class _sample06 extends _viewer3d2 {
public static void main(String... args) {
Application.launch(args);
}
@Override
public int get_view_width() { return 640; }
@Override
public int get_view_height() { return 480; }
private static final double
LEN = 600,
WIDTH = 100, HEIGHT = 5, DEPTH = 200, BORDER = -0.75 * DEPTH,
BALL_R = HEIGHT,
FIELD_W = WIDTH - 2 * BALL_R, FIELD_D = DEPTH - 2 * BALL_R,
RACKET_W = WIDTH / 4, RACKET_Z = BORDER - 2 * BALL_R;
private _shape3d table, field, ball, racket;
private _transform tf_ball, tf_racket;
@Override
public void init_scene(_viewport3d vp) {
vp.scene_transform.position.set(0, 0, LEN);
set_vert_slider_range(-90, -30);
set_horz_slider_range(45, -45);
table = new _shape3d();
_vector[] vertices = new _vector[16];
for (int i = 0; i < 8; i++) {
vertices[i] = new _vector(
(i % 4 == 0 || i % 4 == 1) ? WIDTH : -WIDTH,
(i < 4) ? HEIGHT : -HEIGHT,
(i % 4 == 0 || i % 4 == 3) ? DEPTH : -DEPTH);
vertices[i + 8] = new _vector(
(i % 4 == 0 || i % 4 == 1) ? FIELD_W : -FIELD_W,
(i < 4) ? HEIGHT : -BALL_R,
(i % 4 == 0 || i % 4 == 3) ? FIELD_D : -FIELD_D);
}
table.vertices = vertices;
for (int i = 0; i < 4; i++) {
int j = (i + 1) % 4;
table.add_face(i, i + 4, j + 4, j);
}
table.add_face(0, 1, 2, 10, 9, 8);
table.add_face(2, 3, 0, 8, 11, 10);
table.set_color(Color.BROWN);
field = new _shape3d();
field.vertices = vertices;
for (int i = 8; i < 12; i++) {
int j = (i + 1) % 4 + 8;
field.add_face(i, j, j + 4, i + 4);
}
field.add_face(12, 13, 14, 15);
field.set_color(Color.GREEN);
ball = _shape3d.create_ball(BALL_R, 2);
tf_ball = new _transform(new _vector(0, 0, BORDER));
racket = _shape3d.create_tube(BALL_R, RACKET_W, 4);
tf_racket = new _transform(new _vector(0, 0, RACKET_Z));
_matrix.rot_z(Math.PI / 2, tf_racket.orientation);
racket.set_color(Color.RED);
_transform tf_camera = new _transform();
_vector ray = new _vector();
view.setOnMouseMoved((evt) -> {
_math3d.inv(vp.scene_transform, tf_camera);
_vector pos = tf_camera.position;
_math3d.mul(
tf_camera.orientation,
vp.get_ray(evt.getX(), evt.getY(), ray),
ray);
double racket_x = pos.x - ray.x * pos.y / ray.y;
racket_x = Math.min(racket_x, FIELD_W - RACKET_W);
racket_x = Math.max(racket_x, -FIELD_W + RACKET_W);
tf_racket.position.set(racket_x, 0, RACKET_Z);
});
AnimationTimer timer = new AnimationTimer() {
private long prev_t;
@Override
public void handle(long t) {
if (!move_ball((t - prev_t) / 1.0e+9))
this.stop();
repaint();
prev_t = t;
}
};
view.setOnMouseClicked((evt) -> {
timer.start();
});
}
@Override
public void render(_viewport3d vp) {
vp.render_shape(field);
vp.push_transform(tf_ball);
vp.render_shape(ball);
vp.pop_transform();
vp.push_transform(tf_racket);
vp.render_shape(racket);
vp.pop_transform();
vp.render_shape(table);
}
private static final double
RIGHT = FIELD_W - BALL_R, LEFT = -RIGHT,
BACK = FIELD_D - BALL_R, FRONT = -BACK,
SPEED = 400;
private double ball_x = 0, ball_z = FRONT;
private double dir_x, dir_z;
private int score = 0;
private boolean move_ball(double dt) {
if (ball_z == FRONT) { // ゲーム開始
tf_ball.position.set(ball_x = 0, 0, ball_z = BORDER);
score = 0;
get_move_dir();
return true;
}
// ゲーム中
double dv = Math.min(dt, 0.5) * SPEED;
double dx = dv * dir_x, dz = dv * dir_z;
double prev_dir_x = dir_x, prev_dir_z = dir_z;
ball_x += dx; ball_z += dz;
if (ball_x < LEFT) { ball_x = 2 * LEFT - ball_x; dir_x = -dir_x; }
else if (ball_x > RIGHT) { ball_x = 2 * RIGHT - ball_x; dir_x = -dir_x; }
if (ball_z > BACK) { ball_z = 2 * BACK - ball_z; dir_z = -dir_z; }
else if (ball_z < BORDER) {
double k = (ball_z - BORDER) / dz;
if (k < 1) {
double x = ball_x - dx * k;
if (Math.abs(x - tf_racket.position.x) < RACKET_W) {
get_move_dir();
dx = dv * dir_x; dz = dv * dir_z;
ball_x = x + dx * (1 - k);
ball_z = BORDER + dz * (1 - k);
}
}
}
if (prev_dir_x != dir_x || prev_dir_z != dir_z) score += 10;
if (ball_z < FRONT) {
ball_x -= dx / dz * (ball_z - FRONT);
ball_z = FRONT;
}
tf_ball.position.set(ball_x, 0, ball_z);
return (ball_z != FRONT);
}
private void get_move_dir() {
double t = Math.random() * Math.PI / 4 + Math.PI / 12;
if (dir_x < 0) t = -t;
dir_z = Math.cos(t);
dir_x = Math.sin(t);
}
@Override
public void draw(GraphicsContext gc) {
gc.setFill(Color.BLACK);
gc.setTextAlign(TextAlignment.CENTER);
gc.fillText(String.format("SCORE: %02d", score),
get_view_width() / 2, 20);
}
}