From 21e98a7eb58a17202a2f9f47a61c803d26b0fe22 Mon Sep 17 00:00:00 2001
From: casavaca <96765450+casavaca@users.noreply.github.com>
Date: Sat, 13 Jan 2024 00:11:45 -0800
Subject: [PATCH] Add comments

---
 src/platforms/rcore_web.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/platforms/rcore_web.c b/src/platforms/rcore_web.c
index d039bffe5..b83ee72ad 100644
--- a/src/platforms/rcore_web.c
+++ b/src/platforms/rcore_web.c
@@ -1635,6 +1635,10 @@ static EM_BOOL EmscriptenTouchCallback(int eventType, const EmscriptenTouchEvent
         else if (eventType == EMSCRIPTEN_EVENT_TOUCHEND) CORE.Input.Touch.currentTouchState[i] = 0;
     }
 
+    // Update mouse position if we detect a single touch.
+    // This is essential for raylib to work on touchscreen.
+    // Otherwise, mouse position will always be 0,0, so that
+    // things such as raygui and examples/shapes/shapes_lines_bezier.c won't work
     if (CORE.Input.Touch.pointCount == 1) {
         CORE.Input.Mouse.currentPosition.x = CORE.Input.Touch.position[0].x;
         CORE.Input.Mouse.currentPosition.y = CORE.Input.Touch.position[0].y;