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POCollision detection for one frame in JavaScript
 

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  1. POCollision detection for one frame in JavaScript
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    <p>I'm playing around with the <a href="http://craftyjs.com/" rel="nofollow">Crafty.js</a> game engine. I have a small game where the player is a ball and he drops down to platforms. Every time he hits the next platform, he gains a point. The score is stored as a variable and displayed on screen. I'm using Crafty's collision detection to detect when the player hits a new platform. If you're not familiar with Crafty, it's pretty simple, whenever the player hits the new platform, an event is fired and I can add one to the score.</p> <p><strong>My problem:</strong> The game is running around 60fps. Every time the canvas reloads, Crafty will detect whether or not the player is actually touching the platform. This results in my score variable incrementing by one every single frame the player is touching a level. This is far from what I want. I want the score to be incremented <em>ONCE</em> per platform. This is a problem that I don't know how to fix.</p> <p><strong>Other things I've tried to solve it:</strong> I also considered constantly measuring the distance that the player is from the starting point then I could tell (by division) what platform the player is on (since the platforms are equally vertically spaced). This was a problem however since Crafty was having issues giving me the current location of the player.</p> <p><strong>What I think would work:</strong> I think if I could have an event fired on the first frame that the player hits each platform, then that might work. (side note, If the player stays on one platform and jumps up and lands on the same platform a second time, I only want <em>ONE</em> point to be added. Not double jumping)</p> <p><strong>What I need from you guys:</strong> Have you ever had this issue? I really need to finish this game. And This minor technical problem is preventing me from finishing it. I'd love somebodys input.</p>
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    1. USShmiddty
    1. USKyle Morgan
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    1. COSo if I'm on a platform and I jump and land back on the same platform, do I get another point?
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      1. POCollision detection for one frame in JavaScript
      1. USTaymon
    2. CO@Taymon Nope. One point per platform. I might also note that the user will be landing on each platform. The way the levels are setup, he couldn't skip a platform.
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      1. USKyle Morgan
 

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