The physical location of an entity inside the game space, be it visible or invisible, absolute or relative.

learn more… | top users | synonyms

0
votes
2answers
1k views

XNA - positioning after rotation

I have a turret with a 2 gunbarrels. The turret rotates towards my mouse. So far no problem. When it creates a few bullets and positions them at the end of the gun barrels. Here is the problem. It ...
2
votes
1answer
440 views

Position Reconstruction from Depth by inverting Perspective Projection

I had some trouble reconstructing position from depth sampled from the depth buffer. I use the equivalent of gluPerspective in GLM. The code in GLM is: template GLM_FUNC_QUALIFIER detail::tmat4x4 ...
1
vote
1answer
1k views

Positioning a sprite in XNA: Use ClientBounds or BackBuffer?

I'm reading a book called "Learning XNA 4.0" written by Aaron Reed. Throughout most of the chapters, whenever he calculates the position of a sprite to use in his call to SpriteBatch.Draw, he uses ...
3
votes
1answer
340 views

Retrieving model position after applying modeltransforms in XNA

For this method that the goingBeyond XNA tutorial provides, it would be really convenient if I could retrieve the new position of the model after I apply all the transforms to the mesh. I have edited ...
3
votes
2answers
189 views

Camera placement sphere for an always fully visible object

Given an object: With the bounds [x, y, z, width, height, depth] And an orthographic projection [left, right, bottom, top, near, far] I want to determine the radius of a sphere which allows me to ...
2
votes
1answer
577 views

multiply matrix by vector: what to do if need to change y-up to z-up?

I multiply a matrix with a position vector to get a new position, however, now I need to change my matrix from y-up coordinate space to z-up. Changing only the matrix won't work: how to apply the ...
0
votes
1answer
286 views

Why set the position of both b2Body and Box2DSprite?

In a game, we add a body for each sprite, the method is: createBodyAtLocation:(CGPoint) forSprite:(Box2DSprite*)sprite In which we create the body and we attach it to the sprite in parameter: ...
3
votes
2answers
1k views

Positional sound with headphones?

I've have read this interesting question, where is explained how to simulate positional sound with the left and right channel; but still I wonder: is it possible to simulate positional sound (with ...
2
votes
2answers
881 views

Making mouse pos realtive to a moving object

I'm coding my first actual game, trying without following tutorials, just trying to use my knowledge so far to make something playable. I'm creating (attempting) a simple side-scrolling shooter. I ...
1
vote
1answer
5k views

Looking at the mouse position in a top down Unity game?

I'm trying to make a simple top down game where the player looks at wherever the mouse is pointed. The player is only going to rotate on the Y axis. Here's what I have so far but I can't seem to get ...
2
votes
1answer
334 views

delay camera xna

I read this tutorial http://www.riemers.net/eng/Tutorials/XNA/Csharp/Series2/Camera_delay.php but i didnot unsterstand it. Is there another way to delay the camera position movement without this ...
0
votes
1answer
228 views

How to move the camera in XNA only after few moments?

I made the camera position 10 units from an object, but not behind it. I dont want the camera position behind the object right away when it rotates, I want that when I will rotate the object, the ...
0
votes
1answer
331 views

How to compute tile offset for different isometric angles?

I am working on an isometric game and the designers want to use a different isometric angle than the default one, where I simply had to do a 2/1 offset based on tile size. I know what the new ...
3
votes
3answers
5k views

Find Point with only angle and distance

I'm working on a school project and we have to create a tank team with the programming game Robocode (tank battle with self programmed bots in Java). I have to program a scout bot that scans, finds ...
3
votes
1answer
322 views

Entity position: In map or in script?

I'd like to know how others have handled the issue of storing the entity's position. (Or maybe it's not an issue and I just make it too complicated.) I'm undecided on whether to store the position of ...
1
vote
1answer
410 views

Scene graphs vs in-game representation

This is a general question which aim is to allow me to start digging on the subject by myself. As I noticed the general opinion is that scene graphs are good for describing the scene in a level ...
11
votes
9answers
2k views

How to implement time traveling into a game?

I was wondering how to implement time travel into a game. Nothing super complex, just time-reversal like what's in Braid, where the user can rewind/fast forward time by 30 seconds or whatever. I ...
7
votes
2answers
637 views

How should one handle positions in a tile-based world?

I have a simple Tower Defense game using a tiled world. Creep and towers are on a tile at all times. How should I represent the position of creeps in code? (Do creeps know their current tile and ...
2
votes
1answer
543 views

Why are my 2D positions “off” after adding a camera transformation in XNA?

My game's source is on github. I am following this tutorial to create a 2D camera. After I adding the transformation to the SpriteBatch, all of my positions seem to be "off" when I move the ship (and ...
6
votes
3answers
1k views

Kepler orbit : get position on the orbit over time

I'm developing a space-simulation related game, and I am having some trouble implementing the movement of binary stars, like this: The two stars orbit their centroid, and their trajectories are ...
6
votes
4answers
1k views

Determing an object's position along a curve over time

I have some objects in my game which are "thrown". At the moment I am trying to implement this by having these objects follow a parabolic curve. I know the start point, the end point, the vertex and ...
6
votes
4answers
418 views

What data should I use to track the player position on a world at the same size of the earth in a multiplayer game?

I guess this kind of game or simulator already exist somewhere, but I'm not sure... Let's imagine I'm making a game where the proportions of the planet earth and the humans beings on it are the same ...
6
votes
3answers
2k views

How would one determine the position of a participant in a racing game?

Now, for the record, I'm currently not implementing any racing game whatsoever, but this problem just popped into my mind and now I'm curious. So how would one go about finding out which participant ...