Tagged Questions

0
votes
0answers
54 views

Collision between the player , stairs, ramps etc

i am making a game 2D in XNA 4.0. I have already made gravity , animations and the jump. Now i need the collision between my character and the objects (obstacles , stairs etc.) How can i do that? ...
2
votes
2answers
128 views

Collision detection against large arbitrarily shaped textures

What is the most effecient way to do collision detection on strangely shaped textures in XNA? Here is an example texture: As you can see, it is far from a perfect square. I want the player to ...
0
votes
2answers
124 views

XNA 4.0 Plane size

Possibly a dumb question, but do planes stretch on to infinity? I can't define a spanning area for it, and would have to do some sort of check for collisions like if(x intersects BoundingBox and ...
0
votes
1answer
168 views

Creating A Bounding Box around each item in a list XNA 4.0

I have asked a similar question before except i am more experienced and have more understanding of XNA. I have bullets that shoot whenever you press RightTrigger. I am having trouble though creating ...
5
votes
2answers
132 views

How can I normalize a vector if I am handling movment of each axis seperatley?

I am writing a 2D tile based game engine in XNA, and I've recently fine-tuned my collision detection using the answers provided here and more specifically here. The tile based collision detection now ...
0
votes
1answer
150 views

How to make AABB collisions work? [closed]

I am unable to make efficient AABB collision in XNA 4. I am making a platformer, with tile based map. Here is what I do in my tile class : public virtual void Update(GameTime gameTime, ...
0
votes
1answer
117 views

Complex Models using bounding boxes in xna 4

I'm new to XNA, and have just started looking into collision detection. I've managed to get a bounding sphere around my first person camera object and i want to check the collision between that and ...
0
votes
2answers
149 views

3d to 2d Collision

I have a 3d model which rotates around my screen, it's always on the Z axis = 0 where everything of my 2d images are. My 2d images fly out of the center and get bigger to give the view as getting ...
1
vote
0answers
60 views

Alternate Collision Detection in XNA 4.0

Is there a better more efficent way for collision detection in XNA 4.0 besides Bounding boxes or circles? Like a way that would automatically wrap around the texture regardless of the textures shape.
0
votes
1answer
109 views

3D models and hit detection

I'm currently trying to create a game that involves the inside of a cube, which i will make in Maya. My question is what is the best way to create a model with hit detection in mind? For example my ...
1
vote
2answers
151 views

Per color collision is really expensive - can my approach be improved?

I've been working on adding a color based collision component which takes a list of colors and checks to see if an object is colliding with any of them. However, the operation seems to be extremely ...
3
votes
2answers
326 views

XNA 4.0 / C# Collision Response

Okay, this is really starting to annoy me. First of all, detecting collisions is nice and easy. I have a list of tiles, and a player. The player and each tile have their own rectangles. (The tiles ...
1
vote
1answer
111 views

this.BoundingBox.Intersects(Wall[0].BoundingBox) not working properly

I seem to be having this problem a lot, I'm still learning XNA / C# and well, trying to make a classic paddle and ball game. The problem I run into (and after debugging have no answer) is that ...
1
vote
3answers
382 views

Collision detection doesn't work for automated elements in XNA 4.0

I have a really weird problem. I made a 3D simulator of an "assembly line" as a part of a college project. Among other things it needs to be able to detect when a box object passes in front of sensor. ...
1
vote
2answers
401 views

XNA How to detect collision between 2d sprites and 3d primitives (not models)

My current status: I have already read some tutorials about 3d collision I know how ray trace works and how to convert mouse follow a vector to track the closest object that collides with out vector ...
0
votes
1answer
133 views

Binding BoundingSpheres to a world matrix in XNA

I made a program that loads the locations of items on the scene from a file like this: using (StreamReader sr = new StreamReader(OpenFileDialog1.FileName)) { ...
0
votes
1answer
395 views

Calculating 2D (screen) coordinates from 3D positions in XNA 4.0

I have a program that draws some items to the scene by loading their positions from a file. Now I want to place a Ray on the same location where the items are drawn. So my question is how can I ...
0
votes
2answers
2k views

Basic 3D Collision detection in XNA 4.0

I have a problem with detecting collision between 2 models using BoundingSpheres in XNA 4.0. The code I'm using i very simple: private bool IsCollision(Model model1, Matrix world1, Model model2, ...
2
votes
1answer
91 views

Question about BoundingSpheres and Ray intersections

I'm working on a XNA project (not really a game) and I'm having some trouble with picking algorithm. I have a few types of 3D models that I draw to the screen, and one of them is a switch. So I'm ...
1
vote
1answer
190 views

JigLibX collision detection only once

I try to implement collision detection in latest JiglibX using this example http://jiglibx.wikidot.com/catch-collisionevents . I choose creating callback. I try to detect collision only once. When ...
2
votes
3answers
4k views

2D Tile-based Collision Detection

I've been planning an indie game project for a while now. I'll summarise it for you so I can get right to the question. It's done entirely using the latest version of XNA through Visual Studio. ...
1
vote
1answer
121 views

Collision detected on only the latest added tile

I'm making a 2D platformer and I'm using tiles as the ground. I have a Tile class and I'm loading the tiles with the help of a list in the main game class: public static List<Tile> tiles = new ...
5
votes
1answer
2k views

Sidescroller variable terrain heightmap for walking/collision

I've been fooling around with moving on sloped tiles in XNA and it is semi-working but not completely satisfactory. I also have been thinking that having sets of predetermined slopes might not give me ...
1
vote
1answer
376 views

Collision detection not working

I realized I put this in the wrong forum, so here it is: I made a collision detection in the Update() section, and this is the code: if (player.playerRect.Intersects(turtleRect)) { ...
1
vote
1answer
687 views

Inaccurate 3D model collision using XNA

I am creating a classic game in 3D that deals with asteriods and you have to shoot them and avoid being hit from them. I can generate the asteroids just fine and the ship can shoot bullets just fine. ...
2
votes
1answer
440 views

Collision with half of a semi-circle

I am trying to port a game I made using Flash/AS3, to the Windows Phone using C#/XNA 4.0. You can see it here: http://goo.gl/gzFiE In the flash version I used a pixel-perfect collision between ...