1 files changed, 70 insertions, 0 deletions
diff --git a/client/src/net/input.ts b/client/src/net/input.ts
new file mode 100644
index 0000000..75be3e6
--- /dev/null
+++ b/client/src/net/input.ts
@@ -0,0 +1,70 @@
+import { Key, KeyMap, PlayerInput } from "../types.js"
+
+let pressed = {}
+
+const updateRecent = (keymap: KeyMap) => {
+    let max = -1
+    let key = undefined
+    for (let code in pressed) {
+        let weight = pressed[code]
+        if (weight < max) continue
+        max = weight
+        key = keymap[code]
+    }
+
+    return key
+}
+
+export const startInputListener = (keymap: KeyMap): () => PlayerInput => {
+	let key: Key = Key.NOTHING;
+	let start = false;
+	
+    document.getElementById("start").onclick = function() {
+        start = true
+    }
+
+	window.addEventListener("keydown", ev => {
+		if(ev.repeat) {
+			return;
+		}
+		if(!(ev.code in keymap)) {
+			return;
+		}
+		pressed[ev.code] = Object.keys(pressed).length
+        key = updateRecent(keymap)
+	});
+
+    window.addEventListener("keyup", ev => {
+        if (ev.repeat) {
+            return;
+        }
+        if (!(ev.code in keymap)) {
+            return
+        }
+        delete pressed[ev.code]
+        key = updateRecent(keymap)
+    })
+
+	let last = {
+		key: Key.NOTHING,
+	}
+	
+	return (): PlayerInput => {
+
+		if(key === last.key && !start) {
+			return;
+		}
+
+		last = {
+			key,
+		};
+
+		let s = start;
+		start = false;
+
+		return {
+            key,
+			start: s,
+		}
+	}
+}