playcanvas
Click event never fires in multi-touch scenarios
Please, evaluate if it is a bug.
Currently, the click event never fires on an element input, if there is already another finger touching the screen.
https://github.com/playcanvas/engine/blob/3a9e881f2dff74923076ec4497929c11fffe2c15/src/input/element-input.js#L648-L664
The event.touches.length will be more than zero, skipping the block.
Repro project: https://playcanvas.com/project/961849/overview Touch the screen somewhere first, then while holding it, use another finger to tap the button.
The original design is to mirror what the browser does for raw inputs. So if the browser doesn't do a click event in the same scenario, then by original design, it isn't a bug
I vote for it to be considered a bug. In many games we often use two fingers simultaneously for controlling the gameplay. If the browsers do it differently, I suppose, it is because it is not common to use 2 fingers to navigate a web page.
