Thanks for the suggestion. I have changed the graph accordingly and now get “almost” correct coordinates.
What I’m testing is to get “x,y” from the clicks/touches then simulate a tap on this position via “adb” on an android phone.
The “y” value used by “adb” to trigger a tap is very close to what’s from the mouse down event in UE. However the “x” value used by “adb” is about 120 larger than that from the mouse down event. This android phone has a camera hole on the top and the UE app UI stops at the edge of the camera hole. I suspect that’s why the width of the screen used by UE is a bit less than the screen width.
If so, is there a way to calculate how much that offset is, or a way to force UE game to occupy the whole screen even if the UI covers the camera hole?