big refactor

static/js/input.js

@@ -0,0 +1,45 @@
+function handleInput(action, active) {
+    if (isGameOver) { if(active) location.reload(); return; }
+
+    const relativeTick = currentTick - lastSentTick;
+
+    if (action === "JUMP" && active) {
+        if (player.grounded && !isCrouching) {
+            player.vy = JUMP_POWER;
+            player.grounded = false;
+            inputLog.push({ t: relativeTick, act: "JUMP" });
+        }
+    }
+    if (action === "DUCK") { isCrouching = active; }
+}
+
+// Event Listeners
+window.addEventListener('keydown', (e) => {
+    if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
+
+    if (e.code === 'Space' || e.code === 'ArrowUp') handleInput("JUMP", true);
+    if (e.code === 'ArrowDown' || e.code === 'KeyS') handleInput("DUCK", true);
+});
+window.addEventListener('keyup', (e) => {
+    if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
+
+    if (e.code === 'ArrowDown' || e.code === 'KeyS') handleInput("DUCK", false);
+});
+window.addEventListener('mousedown', (e) => {
+    if (e.target === canvas && e.button === 0) handleInput("JUMP", true);
+});
+
+// Touch Logic
+let touchStartY = 0;
+window.addEventListener('touchstart', (e) => {
+    if(e.target === canvas) { e.preventDefault(); touchStartY = e.touches[0].clientY; }
+}, { passive: false });
+window.addEventListener('touchend', (e) => {
+    if(e.target === canvas) {
+        e.preventDefault();
+        const diff = e.changedTouches[0].clientY - touchStartY;
+        if (diff < -30) handleInput("JUMP", true);
+        else if (diff > 30) { handleInput("DUCK", true); setTimeout(() => handleInput("DUCK", false), 800); }
+        else if (Math.abs(diff) < 10) handleInput("JUMP", true);
+    }
+});