From 204822ed452036f7be8e51d67f624720874abb87 Mon Sep 17 00:00:00 2001
From: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>
Date: Sun, 12 Sep 2021 18:13:54 +0200
Subject: [HTML5] Implement Pointer Lock API in JS library.

Removes more emscripten HTML5 library dependencies.
---
 .../javascript/js/libs/library_godot_display.js    | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'platform/javascript/js')

diff --git a/platform/javascript/js/libs/library_godot_display.js b/platform/javascript/js/libs/library_godot_display.js
index a254c92d4d..fa129f0e56 100644
--- a/platform/javascript/js/libs/library_godot_display.js
+++ b/platform/javascript/js/libs/library_godot_display.js
@@ -376,6 +376,20 @@ const GodotDisplayCursor = {
 				delete GodotDisplayCursor.cursors[key];
 			});
 		},
+		lockPointer: function () {
+			const canvas = GodotConfig.canvas;
+			if (canvas.requestPointerLock) {
+				canvas.requestPointerLock();
+			}
+		},
+		releasePointer: function () {
+			if (document.exitPointerLock) {
+				document.exitPointerLock();
+			}
+		},
+		isPointerLocked: function () {
+			return document.pointerLockElement === GodotConfig.canvas;
+		},
 	},
 };
 mergeInto(LibraryManager.library, GodotDisplayCursor);
@@ -850,6 +864,20 @@ const GodotDisplay = {
 		}
 	},
 
+	godot_js_display_cursor_lock_set__sig: 'vi',
+	godot_js_display_cursor_lock_set: function (p_lock) {
+		if (p_lock) {
+			GodotDisplayCursor.lockPointer();
+		} else {
+			GodotDisplayCursor.releasePointer();
+		}
+	},
+
+	godot_js_display_cursor_is_locked__sig: 'i',
+	godot_js_display_cursor_is_locked: function () {
+		return GodotDisplayCursor.isPointerLocked() ? 1 : 0;
+	},
+
 	/*
 	 * Listeners
 	 */
-- 
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