Release Healer Man 0.1.9

src/input/controller.ts

@@ -25,6 +25,8 @@ const INITIAL_REPEAT_MS = 280;
 const REPEAT_MS = 90;
 const AXIS_THRESHOLD = 0.55;
 const AXIS_STEPS = 128;
+const GAMEPAD_DISCOVERY_INTERVAL_MS = 500;
+const REPEATABLE_BUTTON_TOKENS = new Set(["Button12", "Button13", "Button14", "Button15"]);
 
 const listeners = new Set<TokenListener>();
 const movementListeners = new Set<MovementListener>();
@@ -39,26 +41,38 @@ let stopService: (() => void) | null = null;
 function connectedGamepad(): Gamepad | null {
   const gamepads = navigator.getGamepads?.();
   if (!gamepads) return null;
-  return Array.from(gamepads).find((gamepad): gamepad is Gamepad => gamepad !== null) ?? null;
+  for (let index = 0; index < gamepads.length; index += 1) {
+    const gamepad = gamepads[index];
+    if (gamepad) return gamepad;
+  }
+  return null;
 }
 
 function tokensFor(gamepad: Gamepad, tokens: Set<string>): void {
   tokens.clear();
-  gamepad.buttons.forEach((button, index) => {
+  for (let index = 0; index < gamepad.buttons.length; index += 1) {
+    const button = gamepad.buttons[index];
     if (button.pressed || button.value > 0.65) tokens.add(`Button${index}`);
-  });
-  gamepad.axes.forEach((value, index) => {
+  }
+  for (let index = 0; index < gamepad.axes.length; index += 1) {
+    const value = gamepad.axes[index];
     if (value <= -AXIS_THRESHOLD) tokens.add(`Axis${index}-`);
     if (value >= AXIS_THRESHOLD) tokens.add(`Axis${index}+`);
-  });
+  }
 }
 
 function canRepeat(token: string): boolean {
-  return ["Button12", "Button13", "Button14", "Button15"].includes(token)
+  return REPEATABLE_BUTTON_TOKENS.has(token)
     || token.startsWith("Axis0")
     || token.startsWith("Axis1");
 }
 
+function tokenSetsMatch(left: ReadonlySet<string>, right: ReadonlySet<string>): boolean {
+  if (left.size !== right.size) return false;
+  for (const token of left) if (!right.has(token)) return false;
+  return true;
+}
+
 function isLayerModifier(token: string): boolean {
   return token === "Button4" || token === "Button6";
 }
@@ -114,14 +128,17 @@ function normalizedAxis(value: number): number {
 }
 
 export function setExternalControllerMovement(next: ControllerMovement): void {
-  const normalized = {
-    moveX: normalizedAxis(next.moveX),
-    moveY: normalizedAxis(next.moveY),
-    lookX: normalizedAxis(next.lookX),
-    lookY: normalizedAxis(next.lookY),
-  };
-  if (Object.keys(normalized).every((key) => normalized[key as keyof ControllerMovement] === movement[key as keyof ControllerMovement])) return;
-  movement = normalized;
+  const moveX = normalizedAxis(next.moveX);
+  const moveY = normalizedAxis(next.moveY);
+  const lookX = normalizedAxis(next.lookX);
+  const lookY = normalizedAxis(next.lookY);
+  if (
+    moveX === movement.moveX
+    && moveY === movement.moveY
+    && lookX === movement.lookX
+    && lookY === movement.lookY
+  ) return;
+  movement = { moveX, moveY, lookX, lookY };
   for (const listener of movementListeners) listener(movement);
 }
 
@@ -141,6 +158,8 @@ export function resetControllerState(): void {
 export function startControllerInput(): () => void {
   if (stopService) return stopService;
 
+  const webGamepadPolling = !Capacitor.isNativePlatform();
+
   const onNativeToken = (event: Event) => {
     const detail = (event as CustomEvent<ControllerTokenEvent>).detail;
     if (!detail?.token) return;
@@ -157,25 +176,63 @@ export function startControllerInput(): () => void {
     if (detail) setExternalControllerMovement(detail);
   };
   const onReset = () => resetControllerState();
-  const onVisibility = () => {
-    if (document.visibilityState !== "visible") resetControllerState();
-  };
   window.addEventListener(NATIVE_TOKEN_EVENT, onNativeToken);
   window.addEventListener(NATIVE_MOTION_EVENT, onNativeMotion);
   window.addEventListener(NATIVE_RESET_EVENT, onReset);
-  document.addEventListener("visibilitychange", onVisibility);
 
   let frame = 0;
+  let discoveryTimer: ReturnType<typeof setTimeout> | null = null;
   let hadGamepad = false;
+  let activeGamepadIndex: number | null = null;
+
+  const canPollGamepads = () => document.visibilityState === "visible"
+    && (typeof document.hasFocus !== "function" || document.hasFocus());
+
+  const cancelScheduledPoll = () => {
+    if (frame) cancelAnimationFrame(frame);
+    frame = 0;
+    if (discoveryTimer !== null) clearTimeout(discoveryTimer);
+    discoveryTimer = null;
+  };
+
+  const suspendPolling = () => {
+    cancelScheduledPoll();
+    if (hadGamepad) resetControllerState();
+    hadGamepad = false;
+    activeGamepadIndex = null;
+  };
+
+  const scheduleFrame = () => {
+    if (!webGamepadPolling || frame || !canPollGamepads()) return;
+    if (discoveryTimer !== null) clearTimeout(discoveryTimer);
+    discoveryTimer = null;
+    frame = requestAnimationFrame(poll);
+  };
+
+  const scheduleDiscovery = () => {
+    if (!webGamepadPolling || frame || discoveryTimer !== null || !canPollGamepads()) return;
+    discoveryTimer = setTimeout(() => {
+      discoveryTimer = null;
+      scheduleFrame();
+    }, GAMEPAD_DISCOVERY_INTERVAL_MS);
+  };
+
   const poll = (now: number) => {
-    const gamepad = typeof document.hasFocus === "function" && !document.hasFocus()
-      ? null
-      : connectedGamepad();
+    frame = 0;
+    if (!canPollGamepads()) {
+      suspendPolling();
+      return;
+    }
+
+    const gamepad = connectedGamepad();
     if (!gamepad) {
       if (hadGamepad) resetControllerState();
       hadGamepad = false;
+      activeGamepadIndex = null;
+      scheduleDiscovery();
     } else {
       hadGamepad = true;
+      activeGamepadIndex = gamepad.index;
       setExternalControllerMovement({
         moveX: gamepad.axes[0] ?? 0,
         moveY: gamepad.axes[1] ?? 0,
@@ -183,9 +240,11 @@ export function startControllerInput(): () => void {
         lookY: gamepad.axes[3] ?? 0,
       });
       tokensFor(gamepad, currentTokens);
-      for (const transition of orderedControllerTokenTransitions(previousTokens, currentTokens)) {
-        emitControllerToken(transition);
-        if (transition.pressed) repeatAt.set(transition.token, now + INITIAL_REPEAT_MS);
+      if (!tokenSetsMatch(previousTokens, currentTokens)) {
+        for (const transition of orderedControllerTokenTransitions(previousTokens, currentTokens)) {
+          emitControllerToken(transition);
+          if (transition.pressed) repeatAt.set(transition.token, now + INITIAL_REPEAT_MS);
+        }
       }
       for (const token of currentTokens) {
         if (!previousTokens.has(token) || !canRepeat(token)) continue;
@@ -199,17 +258,51 @@ export function startControllerInput(): () => void {
       const scratch = previousTokens;
       previousTokens = currentTokens;
       currentTokens = scratch;
+      scheduleFrame();
     }
-    frame = requestAnimationFrame(poll);
   };
-  if (!Capacitor.isNativePlatform()) frame = requestAnimationFrame(poll);
+
+  const onGamepadConnected = () => scheduleFrame();
+  const onGamepadDisconnected = (event: Event) => {
+    const disconnectedIndex = (event as GamepadEvent).gamepad?.index;
+    if (disconnectedIndex === undefined || disconnectedIndex === activeGamepadIndex) {
+      resetControllerState();
+      hadGamepad = false;
+      activeGamepadIndex = null;
+    }
+    scheduleFrame();
+  };
+  const onVisibility = () => {
+    if (document.visibilityState === "visible") scheduleFrame();
+    else {
+      suspendPolling();
+      if (!webGamepadPolling) resetControllerState();
+    }
+  };
+  const onFocus = () => scheduleFrame();
+  const onBlur = () => suspendPolling();
+
+  document.addEventListener("visibilitychange", onVisibility);
+  if (webGamepadPolling) {
+    window.addEventListener("gamepadconnected", onGamepadConnected);
+    window.addEventListener("gamepaddisconnected", onGamepadDisconnected);
+    window.addEventListener("focus", onFocus);
+    window.addEventListener("blur", onBlur);
+    scheduleFrame();
+  }
 
   stopService = () => {
     window.removeEventListener(NATIVE_TOKEN_EVENT, onNativeToken);
     window.removeEventListener(NATIVE_MOTION_EVENT, onNativeMotion);
     window.removeEventListener(NATIVE_RESET_EVENT, onReset);
     document.removeEventListener("visibilitychange", onVisibility);
-    if (frame) cancelAnimationFrame(frame);
+    if (webGamepadPolling) {
+      window.removeEventListener("gamepadconnected", onGamepadConnected);
+      window.removeEventListener("gamepaddisconnected", onGamepadDisconnected);
+      window.removeEventListener("focus", onFocus);
+      window.removeEventListener("blur", onBlur);
+    }
+    cancelScheduledPoll();
     resetControllerState();
     stopService = null;
   };