Tagged Questions

0
votes
3answers
95 views

Staggered Isometric Map: Calculate map coordinates for point on screen

I know there are already a lot of resources about this, but I haven't found one that matches my coordinate system and I'm having massive trouble adjusting any of those solutions to my needs. What I ...
14
votes
7answers
455 views

Do I need a Point and a Vector object? Or just using a Vector object to represent a Point is ok?

Structuring the components of an engine that I am developing along with a friend (learning purposes), I came to this doubt. Initially we had a Point constructor, like the following: var Point = ...
2
votes
2answers
525 views

Rotate sphere in Javascript / three.js while moving along x/z plane

I have a sphere/ball in three.js which I want to "roll" around on the x/z plane. For the z axis I could simply do this no matter what the current x and y rotation is: sphere.roll_z = ...
0
votes
2answers
324 views

Calculating angle between two vectors to steer towards a target

I have been trying to implement a path following steering behaviour for AI in a 2D racing game. I have two vectors: futurePosition represents the predicted future position given the car's current ...
1
vote
1answer
178 views

Recreating Doodle Jump in Canvas - Platforms spawning out of reach

I have started to recreate Doodle Jump in HTML using Canvas. Here's my current progress. As you can see, if you play it for a few seconds, some platforms will be out of the player's reach. I don't ...
2
votes
1answer
147 views

Detect mouse click on a bezier curve's neighborhood

I'm developing a game in HTML5 and JavaScript using Canvas API for drawing graphics. I want to detect if the user has clicked on a bezier curve which has the line width of 20 pixels (something like ...
2
votes
2answers
166 views

how to transform child elements position into a world position

I'm making a 2d space game in Javascript with canvas. In this game there's a bunch of spaceships, positioned in world space, with turrets, positioned relative to their parent ships. These objects also ...
1
vote
1answer
178 views

Isometric Optimization in javascript

I'm having some issues with my optimization of my game. I have a simple tile map looped like this in my case the images are 64 by 64 pixels: for (i=0; i < 50; i++){ //horizontal for (j=0; ...
3
votes
1answer
130 views

Make an object slide around an obstacle

I have path areas set up in a game I'm making for canvas/html5 and have got it working to keep the player within these areas. I have a function isOut(boundary, x, y) that returns true if the point is ...
0
votes
2answers
300 views

Check if an object is facing another based on angles

I already have something that calculates the bearing angle to get one object to face another. You give it the positions and it returns the angle to get one to face the other. Now I need to figure out ...
1
vote
1answer
171 views

How can I center a circle around a point on an HTML canvas?

I've got a job to make an engine and light game for canvas in HTML5. I like the things I make to be centered on the x,y positions I give it, I don't know why, it just helps me think about them ...
7
votes
2answers
1k views

Is there a simple way to do true isometric projection with an HTML5 canvas?

Is there a simple way to get a true isometric projection with the HTML5 canvas element?
1
vote
2answers
439 views

Simple Math Multiplayer game - is Ajax sufficient?

I'm planning to create a simple math multiplayer game and I plan to just use Ajax for the server/client communication but I'm not sure if this is sufficient or if I need a socket server. The game ...
5
votes
2answers
743 views

Arrays for a heightmap tile-based map

I'm making a game that uses a map which have tiles, corners and borders. Here's a graphical representation: I've managed to store tiles and corners in memory but I'm having troubles to get ...
9
votes
8answers
3k views

How should I sort images in an isometric game so that they appear in the correct order?

This seems like a rather simple problem but I am having a lot of difficulty with it. What should I do to properly sort images in an isometric game? In a normal 2d top-down game one could use the ...