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feat: added fun example
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‎examples/FunShootingGallery.java‎

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///usr/bin/env jbang "$0" "$@" ; exit $?
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//DEPS org.codejive.miniterm:miniterm${miniterm.ffm:}:${miniterm.version:0.1.5}
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//DEPS org.codejive.miniterm:ansiparser:${miniterm.version:0.1.5}
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//DEPS org.codejive.miniterm:mousetrack:${miniterm.version:0.1.5}
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package examples;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.util.*;
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import java.util.function.BiFunction;
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import org.codejive.miniterm.Terminal;
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import org.codejive.miniterm.ansiparser.AnsiReader;
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import org.codejive.miniterm.mousetrack.MouseEvent;
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import org.codejive.miniterm.mousetrack.MouseTracking;
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public class FunShootingGallery {
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// ── ANSI constants ────────────────────────────────────────────────────────
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private static final String ESC = "\033";
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private static final String CSI = ESC + "[";
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private static final String RESET = CSI + "0m";
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// ── Target definition ─────────────────────────────────────────────────────
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// Background colours for target layers (foreground stays default/white)
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private static final String CY = CSI + "106m"; // bright cyan bg — outer ring (10 pts each)
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private static final String YL = CSI + "103m"; // bright yellow bg — middle ring (25 pts each)
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private static final String RD = CSI + "1;101m"; // bold bright red bg — bullseye (50 pts)
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/**
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* Visual lines of the target (5 visible chars wide × 5 lines tall).
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* ANSI colour codes are embedded; only the visible characters count for positioning.
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*
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* ...
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* .###.
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* .#*#.
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* .###.
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* ...
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*/
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private static final String[] TARGET_VISUAL = {
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" " + CY + " " + RESET,
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CY + " " + RD + " " + CY + " " + RESET,
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CY + " " + RD + " " + YL + " " + RESET + RD + " " + CY + " " + RESET,
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CY + " " + RD + " " + CY + " " + RESET,
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" " + CY + " " + RESET
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};
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/**
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* Hit-box for the target — same visible dimensions as TARGET_VISUAL.
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* ' ' = miss (0 pts)
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* '.' = 10 pts
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* '#' = 25 pts
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* '*' = 50 pts
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*/
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private static final String[] TARGET_HITBOX = {
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" ... ",
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".###.",
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".#*#.",
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".###.",
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" ... "
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};
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private static final String[] PLAY_BUTTON_VISUAL = {
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"╔════════════╗",
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"║ Play Again ║",
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"╚════════════╝"
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};
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private static final String[] EXIT_BUTTON_VISUAL = {
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"╔════════════╗",
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"║ Exit Game ║",
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"╚════════════╝"
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};
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// ── Game constants ────────────────────────────────────────────────────────
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private static final int MAX_TARGETS = 5;
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private static final long MIN_LIFE_MS = 1_000;
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private static final long MAX_LIFE_MS = 3_000;
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private static final long SPAWN_EVERY_MS = 800;
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// ── Game state ────────────────────────────────────────────────────────────
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private static final class ActiveTarget {
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final int x, y;
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final int width, height;
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final String[] visual;
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final long expiresAt;
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final BiFunction<Integer, Integer, Boolean> onHit;
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ActiveTarget(int x, int y, int width, int height, String[] visual, long expiresAt,
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BiFunction<Integer, Integer, Boolean> onHit) {
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this.x = x;
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this.y = y;
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this.width = width;
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this.height = height;
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this.visual = visual;
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this.expiresAt = expiresAt;
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this.onHit = onHit;
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}
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}
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private static final int MAX_MISSES = 10;
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private static Terminal terminal;
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private static int cols, rows;
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private static final List<ActiveTarget> targets = new ArrayList<>();
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private static int score = 0;
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private static int misses = 0;
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private static int hits = 0;
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private static long lastSpawn = 0;
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private static boolean gameOver = false;
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private static boolean restart = false;
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private static boolean breakLoop = false;
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private static final Random rng = new Random();
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// Speed scales up with each hit: targets live shorter, spawn faster
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private static long spawnInterval() { return Math.max(200, SPAWN_EVERY_MS - hits * 20L); }
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private static long minLife() { return Math.max(400, MIN_LIFE_MS - hits * 20L); }
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private static long maxLife() { return Math.max(800, MAX_LIFE_MS - hits * 40L); }
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// ── Entry point ───────────────────────────────────────────────────────────
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public static void main(String[] args) throws Exception {
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try (Terminal term = Terminal.create()) {
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terminal = term;
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var sz = terminal.size();
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cols = sz.width;
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rows = sz.height;
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terminal.enableRawMode();
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terminal.onResize(s -> { cols = s.width; rows = s.height; });
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// Button-click mouse tracking with SGR extended coordinates
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MouseTracking.enable(terminal, MouseTracking.Protocol.BUTTON_MOTION);
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MouseTracking.enableEncoding(terminal, MouseTracking.Encoding.SGR);
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// Enter alternate screen, hide cursor
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terminal.write(CSI + "?1049h" + CSI + "?25l");
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try {
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do {
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// Reset state for (re)start
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gameOver = false; restart = false; breakLoop = false;
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score = 0; misses = 0; hits = 0; lastSpawn = 0;
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targets.clear();
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terminal.write(CSI + "2J");
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drawScore();
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// terminal.read(50) returns -2 on timeout and -1 on EOF.
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// AnsiReader maps -2 (timeout) → "" and -1 (EOF) → null.
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AnsiReader reader = new AnsiReader(() -> terminal.read(50));
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String token;
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while ((token = reader.read()) != null) {
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long now = System.currentTimeMillis();
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// ── Handle input ─────────────────────────────────────────
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if (!token.isEmpty()) {
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if (!token.startsWith(ESC) && token.charAt(0) == 3) break; // Ctrl+C
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if (MouseTracking.isMouseEvent(token)) {
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MouseEvent ev = MouseTracking.parse(token);
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if (ev.type() == MouseEvent.Type.PRESS) {
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handleClick(ev);
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if (breakLoop) break;
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}
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}
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}
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if (!gameOver) {
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// ── Expire old targets ────────────────────────────────────
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Iterator<ActiveTarget> it = targets.iterator();
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while (it.hasNext()) {
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ActiveTarget t = it.next();
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if (now >= t.expiresAt) {
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eraseTarget(t);
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it.remove();
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score -= 5;
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drawScore();
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}
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}
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// ── Spawn a new target every spawnInterval() ──────────────
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if (now - lastSpawn >= spawnInterval()) {
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lastSpawn = now;
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if (targets.size() < MAX_TARGETS) {
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spawnTarget();
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}
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}
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}
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}
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} while (restart);
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} finally {
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MouseTracking.disableEncoding(terminal, MouseTracking.Encoding.SGR);
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MouseTracking.disable(terminal, MouseTracking.Protocol.BUTTON_MOTION);
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// Exit alternate screen, restore cursor
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terminal.write(CSI + "?1049l" + CSI + "?25h");
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}
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}
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System.out.println("Final score: " + score);
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}
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// ── Game logic ────────────────────────────────────────────────────────────
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private static void handleClick(MouseEvent ev) throws IOException {
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int cx = ev.x();
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int cy = ev.y();
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Iterator<ActiveTarget> it = targets.iterator();
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while (it.hasNext()) {
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ActiveTarget t = it.next();
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int lx = cx - t.x; // column within target (0-based)
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int ly = cy - t.y; // row within target (0-based)
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if (lx >= 0 && lx < t.width && ly >= 0 && ly < t.height) {
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if (t.onHit.apply(lx, ly)) {
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eraseTarget(t);
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it.remove();
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return;
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}
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}
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}
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// No target was hit — count as miss
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if (!gameOver) {
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misses++;
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drawScore();
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if (misses >= MAX_MISSES) {
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gameOver = true;
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drawGameOver();
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}
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}
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}
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private static int scoreForChar(char c) {
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if (c == '.') return 10;
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if (c == '#') return 25;
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if (c == '*') return 50;
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return 0; // space = miss
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}
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private static void spawnTarget() throws IOException {
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int width = TARGET_HITBOX[0].length();
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int height = TARGET_HITBOX.length;
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int minX = 1, maxX = cols - width;
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int minY = 3, maxY = rows - height; // rows 1-2 are the status bar
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if (maxX < minX || maxY < minY) return; // terminal too small
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for (int attempt = 0; attempt < 20; attempt++) {
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int nx = minX + rng.nextInt(maxX - minX + 1);
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int ny = minY + rng.nextInt(maxY - minY + 1);
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boolean overlaps = false;
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for (ActiveTarget t : targets) {
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// Add a 1-cell gap so targets are visually separated
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if (nx < t.x + t.width + 1 && nx + width + 1 > t.x
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&& ny < t.y + t.height + 1 && ny + height + 1 > t.y) {
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overlaps = true;
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break;
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}
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}
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if (!overlaps) {
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long life = minLife() + rng.nextInt((int)(maxLife() - minLife()) + 1);
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ActiveTarget t = new ActiveTarget(nx, ny, width, height, TARGET_VISUAL, System.currentTimeMillis() + life,
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(lx, ly) -> {
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int pts = scoreForChar(TARGET_HITBOX[ly].charAt(lx));
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if (pts > 0) {
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score += pts;
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hits++;
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drawScore();
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return true;
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}
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return false;
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});
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targets.add(t);
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drawTarget(t);
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return;
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}
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}
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}
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// ── Rendering ─────────────────────────────────────────────────────────────
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private static void drawTarget(ActiveTarget t) throws IOException {
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for (int i = 0; i < t.height; i++) {
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terminal.write(moveTo(t.x, t.y + i) + t.visual[i]);
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}
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terminal.write(RESET);
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}
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private static void eraseTarget(ActiveTarget t) throws IOException {
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String blank = " ".repeat(t.width);
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for (int i = 0; i < t.height; i++) {
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terminal.write(moveTo(t.x, t.y + i) + blank);
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}
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}
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private static void drawScore() {
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String scoreStr = " SCORE: " + score + " ";
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String missStr = " MISSES: " + misses + "/" + MAX_MISSES + " ";
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String help = " Click targets to score! Ctrl+C to quit ";
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int missCol = scoreStr.length() + 1;
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int helpCol = Math.max(missCol + missStr.length() + 1, cols - help.length() + 1);
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try {
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terminal.write(
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moveTo(1, 1) + CSI + "1;33m" + scoreStr + RESET +
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moveTo(missCol, 1) + CSI + "1;91m" + missStr + RESET +
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moveTo(helpCol, 1) + CSI + "90m" + help + RESET);
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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private static void drawGameOver() {
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String[] lines = {
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" ██████╗ █████╗ ███╗ ███╗███████╗ ",
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" ██╔════╝ ██╔══██╗████╗ ████║██╔════╝ ",
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" ██║ ███╗███████║██╔████╔██║█████╗ ",
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" ██║ ██║██╔══██║██║╚██╔╝██║██╔══╝ ",
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" ╚██████╔╝██║ ██║██║ ╚═╝ ██║███████╗ ",
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" ╚═════╝ ╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ",
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" ",
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" ██████╗ ██╗ ██╗███████╗██████╗ ",
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" ██╔═══██╗██║ ██║██╔════╝██╔══██╗ ",
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" ██║ ██║██║ ██║█████╗ ██████╔╝ ",
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" ██║ ██║╚██╗ ██╔╝██╔══╝ ██╔══██╗ ",
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" ╚██████╔╝ ╚████╔╝ ███████╗██║ ██║ ",
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" ╚═════╝ ╚═══╝ ╚══════╝╚═╝ ╚═╝ ",
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" ",
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" Score: " + score + " Misses: " + misses
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};
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int startRow = Math.max(1, (rows - lines.length) / 2);
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int maxLen = 0;
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for (String l : lines) maxLen = Math.max(maxLen, l.length());
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int startCol = Math.max(1, (cols - maxLen) / 2);
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try {
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terminal.write(CSI + "1;31m");
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for (int i = 0; i < lines.length; i++) {
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terminal.write(moveTo(startCol, startRow + i) + lines[i]);
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}
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terminal.write(RESET);
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// Clear remaining game targets and show button choices
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//for (ActiveTarget t : targets) eraseTarget(t);
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targets.clear();
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int btnRow = startRow + lines.length + 2;
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int btnWidth = PLAY_BUTTON_VISUAL[0].length();
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int btnHeight = PLAY_BUTTON_VISUAL.length;
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int gap = 4;
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int playCol = Math.max(1, (cols - btnWidth * 2 - gap) / 2);
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int exitCol = playCol + btnWidth + gap;
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ActiveTarget playBtn = new ActiveTarget(playCol, btnRow, btnWidth, btnHeight,
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PLAY_BUTTON_VISUAL, Long.MAX_VALUE,
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(lx, ly) -> { restart = true; breakLoop = true; return true; });
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targets.add(playBtn);
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drawTarget(playBtn);
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ActiveTarget exitBtn = new ActiveTarget(exitCol, btnRow, btnWidth, btnHeight,
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EXIT_BUTTON_VISUAL, Long.MAX_VALUE,
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(lx, ly) -> { breakLoop = true; return true; });
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targets.add(exitBtn);
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drawTarget(exitBtn);
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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private static String moveTo(int col, int row) {
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return CSI + row + ";" + col + "H";
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}
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}

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