CODEWITHSUNDEEP
javascriptperformancep5.js
Canatron
Canatron

Reputation: 85

JavaScript - Drawing objects off the screen and other game optimizations

In my game a large map exists, and I am wondering if not drawing shapes (average 250+ at a time) when the player cant see them would make any difference in the game's performance.

Also, every frame I am checking the distance of the player to about 500+ other position vectors (used for enemies, food, bullet interactions), which takes a lot of square rooting. If I make a raw estimate just using the X and Y components combined, would that significantly boost game performance?

Upvotes: 1

Views: 40

Answers (1)

Kevin Workman
Kevin Workman

Reputation: 42176

The only way to answer these questions is to try it and see what happens. You have to weigh the cost of calculating whether something is on the screen against the cost of drawing it. Again, you're going to have to measure both and decide for yourself.

As for measuring distance, you could try using the distance squared to avoid the square root.

Or you could try storing your objects in a data structure like a quadtree, which allow you to you only check the distance of nearby objects. Or putting it simpler: do you really need all 500 vectors active all of the time? Why not store them and only activate them when you need them?

But again, the only way to answer your question is to try it. We can't tell you whether this will vastly improve performance in your game. Only you can answer that, by trying things out. Good luck.

Upvotes: 1

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