Infiltration rework (#1010)

Infiltration 2

src/Infiltration/ui/KeyHandler.tsx

@@ -0,0 +1,13 @@
+import React, { useEffect } from 'react';
+
+interface IProps {
+    onKeyDown: (event: React.KeyboardEvent<HTMLElement>) => void;
+}
+
+export function KeyHandler(props: IProps): React.ReactElement {
+    let elem: any;
+    useEffect(() => elem.focus());
+
+    // invisible autofocused element that eats all the keypress for the minigames.
+    return (<div tabIndex={1} ref={c => elem = c} onKeyDown={props.onKeyDown} />)
+}