125 lines
3.8 KiB
Dart
125 lines
3.8 KiB
Dart
// 输入：IWBT 经典键位（Shift 跳 / Z 跳 / X 射击 / R 重来）。
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// 与 web 版 input.js 1:1 对应。键码沿用 Web 的 KeyboardEvent.code 字符串，
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// 由 UI 层的键盘监听器把 Flutter 按键翻译成 code 后喂给 onKey()。
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import 'dart:convert';
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class Input {
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/// 动作 -> 默认绑定的按键 code 列表。
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static final Map<String, List<String>> bind = {
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'left': ['ArrowLeft', 'KeyA'],
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'right': ['ArrowRight', 'KeyD'],
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'up': ['ArrowUp', 'KeyW'],
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'down': ['ArrowDown', 'KeyS'],
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'jump': ['ShiftLeft', 'ShiftRight', 'Space', 'KeyZ', 'KeyN'],
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'shoot': ['KeyX', 'KeyJ', 'KeyC', 'KeyM'],
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'suicide': ['KeyR'], // IWBT 标准：自杀并回到最近存档点
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'restart': ['Backspace'], // 整关从头再来（放弃所有存档点）
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'pause': ['Escape', 'KeyP'],
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'menu': ['KeyQ'],
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};
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static final List<String> actions =
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bind.keys.toList(); // ['left','right',...]
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static final Map<String, List<String>> _defaultBind = {
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for (final e in bind.entries) e.key: List<String>.from(e.value),
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};
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static final Set<String> down = {}; // 当前按住的原始 code
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static final Map<String, bool> now = {for (final a in bind.keys) a: false};
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static final Map<String, bool> prev = {for (final a in bind.keys) a: false};
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static final Map<String, bool> touch = {}; // 触屏虚拟按键 action -> bool
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static bool enabled = true;
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static bool held(String a) => now[a] ?? false;
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static bool hit(String a) => (now[a] ?? false) && !(prev[a] ?? false);
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static bool released(String a) => !(now[a] ?? false) && (prev[a] ?? false);
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static bool raw(String c) => down.contains(c);
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static bool anyHit() {
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for (final k in now.keys) {
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if (now[k]! && !(prev[k] ?? false)) return true;
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}
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return false;
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}
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static void clear() {
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down.clear();
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for (final k in now.keys) now[k] = false;
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for (final k in prev.keys) prev[k] = false;
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}
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/// 每逻辑帧末尾调用。
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static void endFrame() {
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for (final k in now.keys) prev[k] = now[k]!;
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}
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static void _refresh() {
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for (final act in bind.keys) {
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bool v = false;
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for (final c in bind[act]!) {
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if (down.contains(c)) {
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v = true;
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break;
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}
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}
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if (touch[act] ?? false) v = true;
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now[act] = enabled ? v : false;
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}
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}
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/// 原始键盘事件（Web code 字符串）。
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static void onKey(String code, bool isDown) {
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if (isDown) {
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down.add(code);
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} else {
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down.remove(code);
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}
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_refresh();
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}
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// ---------------- 触屏虚拟按键 ----------------
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static void setTouch(String action, bool on) {
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touch.putIfAbsent(action, () => false);
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if (touch[action] == on) return;
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touch[action] = on;
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_refresh();
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}
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static void clearTouch() {
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bool any = false;
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for (final k in touch.keys) {
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if (touch[k]!) {
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touch[k] = false;
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any = true;
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}
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}
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if (any) _refresh();
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}
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// ---------------- 键位自定义（设置界面调用）----------------
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static Map<String, List<String>> defaultBindings() =>
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{for (final e in bind.entries) e.key: List<String>.from(e.value)};
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static Map<String, List<String>> snapshotBindings() =>
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{for (final e in bind.entries) e.key: List<String>.from(e.value)};
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static void applyBindings(Map<String, List<String>>? map) {
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if (map == null) return;
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for (final act in map.keys) {
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if (bind.containsKey(act)) bind[act] = List<String>.from(map[act]!);
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}
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}
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/// 持久化用：转 JSON 字符串。
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static String toJson() => jsonEncode(bind);
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static void fromJson(String? s) {
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if (s == null) return;
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try {
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final m = (jsonDecode(s) as Map).cast<String, dynamic>();
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final decoded = m.map((k, v) => MapEntry(k, List<String>.from(v as List)));
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applyBindings(decoded);
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} catch (_) {}
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}
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}
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