So we’ll define each (keyboard) key by their ke圜ode and use that ke圜ode as a (JavaScript) key in the controller object.Įach key needs to be able to do two things: Tell us if they’re pressed, and tell us which function to execute if they are pressed. Each key-value pair will represent one key that we want the users to be able to press down to be able to accomplish something. We’ll start by building the controller, a Plain Old JavaScript Object. Now when I then press the up key on my keyboard (ke圜ode 38): This will simply print out whatever’s being pressed to the console. I’m going to add this quick bit of code to the Chrome Dev Tools: document.addEventListener(“keydown”, (e) => console.log(e.ke圜ode)) (Note: Hitting two keys exactly simultaneously isn’t a thing, and is definitely not the solution to this problem.) It forgets about the other finger until you lift its counterpart back up. continues to fire while the key’s being held down) on the last one to be pressed. You, my friend, have become a victim of a weird habit of JavaScript’s keydown handler: When two keys are being pressed at the same time, it only acknowledges key repeat (ie. My character refuses to move diagonally, like a castle in chess.My pong paddle keeps stopping once my friend’s pong paddle starts moving.My sprite freezes every time it has to shoot a laser.On second thought, maybe Flash should stay dead.īut at some point, you spun up a new index.html, wrote some code, requested some animation frames, and eventually, even got something to move along a screen.īut then you ended up at my blog, because suddenly you realized something like:
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