Tagged Questions

C#/XNA port of the Box2D physics engine.

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0
votes
1answer
21 views

Farseer: RemoveBody is not working

I want to remove bodies after they touched the character(playerrect). But the bodies get not removed. I set a breakpoint in the following line but it doesn't get yellow: ...
1
vote
1answer
41 views

Farseer: How can I remove a body?

I have many sensors(coins) in each level and I want to remove the sensors(coins) when the player rectangle(Mario) touches them. I check in OnCollision if Mario touches a coin, if he touches it, it ...
0
votes
1answer
21 views

Farseer: Difficulties with ContactListener

How can I register the ContactListener in XNA? In the box2d manual is written: 9.4 Contact Listener ... At run-time you can create an instance of the listener and register it with ...
-3
votes
0answers
37 views

Farseer: Character jumps weird [closed]

I have a little problem with jumping. For example, the character(Mario) jumps from the top of a tile. The character is now in the air and not touching a tile. After that, he touches the right or left ...
3
votes
1answer
115 views

How do I make a tile passable in one direction only?

I want that my character can jump through some of the tiles, like Mario does in this video: http://www.youtube.com/watch?v=zIPYzbNrNhc In this video, Mario jumps up through orange platforms, but ...
-3
votes
0answers
36 views

Farseer: Difficulties with polygons [closed]

I want to create a polygon but I get many error messages. I don't know what to change. What is wrong? The size of my texture(polygonTexture) is 350x150 pixel. ...
-2
votes
1answer
34 views

Farseer: are you missing a using directive or an assembly reference?

I want to create a polygon in Farseer. I found an example in the documentation but it's not working because I get this error message: The type or namespace name 'Vertices' could not be found (are you ...
0
votes
1answer
48 views

Farseer: Ball is not getting slower

The ball is not getting slower when it rolls over a straight platform. I added friction but that changed nothing, the ball still gets not slower. I want that the ball gets slower and slower and stops ...
0
votes
1answer
66 views

Farseer: Ball is not bouncing realistically

I created a ball that is rolling over platforms. When it falls from one platform to another, it should bounce just like in real life, but the ball keeps bouncing constantly and I don't know how to ...
2
votes
0answers
66 views

Getting a uint color array from a portion of a Texture2D

I'm currently using the Farseer tools to create a body from a Texture2D. However, my texture is a spritesheet and I need to get the uint array containing the colors from a portion of the full ...
21
votes
6answers
2k views

Implementing a wrapping wire (like the Worms Ninja Rope) in a 2D physics engine

I've been trying out some rope-physics recently, and I've found that the "standard" solution - making a rope from a series of objects strung together with springs or joints - is unsatisfying. ...
0
votes
0answers
38 views

Fixture position

I want to apply force in center of specific fixture (engine of ship build from more fixtures), but I can't find any position property. I looked at samples and I found this: World.QueryAABB(fixture ...
-4
votes
1answer
75 views

My 2d Shader in XNA falls apart the second I put it into Farseer [closed]

I wrote a simple light shader that I tested in a simple 2d spaceship shooter and it worked fine. Once I imported it into my friend's farseer project with rotatable shapes, it doesn't seem to work ...
2
votes
2answers
96 views

Texturing 2D vectorial terrain (or simply masking texture)

I have a procedurally generated terrain, as follows: It is generated and then built using Farseer Physics, however I haven't found a way to create and apply a mask to texture it properly, I have ...
2
votes
2answers
86 views

Farseer Physics: How to create shape from Verticies?

As you can understand from the title, I'm pretty new to game development. I'm doing this for fun. Anyway here's my question. I have this Farseer Physics samples and I've been studying them for a few ...
1
vote
1answer
101 views

How do I draw a texture to a MSTerrain object?

I'm using Farseer to make a game in XNA and I can't seem to figure this out. I've decided to use MSTerrain for making my game's terrain because I wanted destructible terrain and MSTerrain seemed like ...
2
votes
1answer
89 views

Developing an interactive book for Windows-Runtime

My three year old loves playing with the interactive books on our iPad, and I love playing with code and I love my Surface RT... So I thought I'd try and make a basic animated book using WinRT, I've ...
0
votes
1answer
91 views

farseer physics xbox samples not working

I have downloaded a few of the sample projects from the official farseer physics website and i just cant get them to run on my xbox. -My connection to the xbox is fine, other xbox projects debug ...
5
votes
2answers
2k views

XNA C# Platformer - physics engine or tile based?

I would like to get some opinions on whether i should develop my game using a physics engine (farseer physics seems to be the best option) or follow the traditional tile-based method. Quick ...
2
votes
1answer
315 views

360+ degree rotation skips back to 0 degrees when using Math.Atan2(y, x)

I'm new to XNA and this is my first actual project, so forgive my noobness. I'm using jointAngle = System.Math.Atan2(RightStick.Y, RightStick.X); in order to set an angle of a joint (farseer) so ...
1
vote
0answers
51 views

Farseer circle hangs where it's spawned

I'm currently trying to simply spawn a circle in Farseer. However, it's stuck wherever I spawn it! The game is updating fine, as I can see the circle spinning in place when I spawn it because of how I ...
-1
votes
1answer
79 views

Farseer Physics Engine and the Ms-PL License [closed]

Am I able to produce code for a game which uses the Farseer engine and release my code under an open source license other than the Ms-PL? My concern is with the following section from the license: ...
2
votes
1answer
270 views

Implementing a wheeled character controller

I'm trying to implement Boxycraft's character controller in XNA (with Farseer), as Bryan Dysmas did (minus the jumping part, yet). My current implementation seems to sometimes glitch in between two ...
1
vote
1answer
112 views

Farseer Physics Samples and Krypton how to reference game

I'm sure this is totally simple and yes I am new at this. I am trying to set up Krypton inside farseer. 1. create a new Krypton engine in my sub screen aka AdvancedDemo1 : PhysicsGameScreen, ...
0
votes
1answer
110 views

InvalidCastException in Farseer's raycasting when trying to use the built-in explosion class?

I'm trying to create an explosion at the point that two entities collide, but whenever explosion.Activate() is called, it causes an InvalidCastException to be thrown in Raycast(), on the line that ...
2
votes
2answers
85 views

Is there any quick and easy way to make all bodies visible with Farseer physics engine for XNA?

I just want to be able to see all my bodies on the screen for debugging purposes and i cant think of an easy way, for example i have make some edge fixtures with curved arcs attached and i just want ...
3
votes
3answers
363 views

Moving a body in a specific direction using XNA with Farseer Physics

I have a custom polygon attached to a body, which looks like this: What I am trying to accomplish is getting the body to move according to wherever the tip of the body is. So far this is what I've ...
1
vote
1answer
143 views

2D Physics Engine to Handle Shapes Composed of Multiple Densities XNA

The game I'm working on involves shapes that might be composed of multiple materials in a variety of ways. Let's just take for example a wooden rod with and sizable tip of iron or say a block composed ...
5
votes
1answer
754 views

Correct way to use Farseer Physics in XNA

I am using Farseer Physics for my 2D sidescroller game and I'm not sure how to proceed with it. I currently have a Sprite class (handles nothing but graphics), a GameObject class (contains specific ...
4
votes
3answers
535 views

IndexOutOfRangeException on World.Step after enabling/disabling a Farseer physics body?

Earlier, I posted a question asking how to swap fixtures on the fly in a 2D side-scroller using Farseer Physics Engine. The ultimate goal being that the player's physical body changes when the player ...
5
votes
1answer
443 views

Farseer Physics: Ways to create a Body?

I want to create something similar to this using farsser and Kinect: https://vimeo.com/33500649 This is my implementation until now: http://www.youtube.com/watch?v=GlIvJRhco4U I have the outline ...
9
votes
3answers
359 views

Why does Farseer 2.x store temporaries as members and not on the stack? (.NET)

UPDATE: This question refers to Farseer 2.x. The newer 3.x doesn't seem to do this. I'm using Farseer Physics Engine quite extensively at the moment, and I've noticed that it seems to store a lot of ...
8
votes
5answers
510 views

What should I do to prevent my monsters from walking off platforms?

I have a question that is driving me crazy because I think it should be fairly easy to find a tutorial on it. I'm currently using XNA and Farseer to create a simple platformer game. I'm about to be ...
0
votes
0answers
132 views

Farseer non-colliding bodies affect eachother

I'm trying to use Farseer to make a tile engine, but bodies that are not colliding with a sprite are still having an effect on it. In this image there is a single sprite(the green box) and a single ...
5
votes
2answers
467 views

Detect Open Space in Farseer [duplicate]

Possible Duplicate: How do I detect ledges? I'm working on a 2D platformer using XNA and Farseer. I would like the player's character to be able to grab and climb up ledges. Detecting a ...
1
vote
2answers
648 views

How do I determine which side of the player has collided with an object?

I have some static bodies (platforms) and a dynamic body (the player) in my world. The collision between them works great, but I would like to know which side of the player (rectangle) collides with ...
1
vote
2answers
248 views

Building a shape out of two rectangles

I would like to build a body with Farseer out of two rectangles so it looks like this: I am a real beginner, so please describe it carefully. Thanks in advance!
2
votes
2answers
486 views

Farseer: Only allow the collision one time with the object

I have there serveral platforms. I would like to allow the player to collide only one time with the object! Hope you can help me
0
votes
1answer
293 views

Building a shape out of an Texture with Farseer

I have already looked at the Documentation on there Website, but the code provieded to create a shape out of an Texture is outdated for the newest version. The body is very simple so maybe i can do it ...
1
vote
2answers
2k views

Create a body of an irregular 2D sprite in Farseer

I'm trying to create a body of a irregular 2D sprite Farseer 3.3.1. The regular shapes that BodyFactory provides are not that I want. Is there a way that one can create irregular objects? Could it be ...
0
votes
1answer
262 views

Multiplayer Game Data Serialization Problems

I want to create a simple game that can be played with one to two player. I plan on using TCP sockets, Farseer Physics, XNA, a BinaryFormater and a Memorystream. as far as i know i can't do the ...
-2
votes
1answer
304 views

Fix my Farseer collision detection code

The collision is not working correctly! The collision is in the "open-word" and not when it collides! Here my code: Platform code(static): body = BodyFactory.CreateRectangle(world, ...
0
votes
1answer
165 views

Farseer: ApplyForce problem

I just tried Farseer and everything is working great. My problem is, that on touch the player should get an force up. Although the touch event works well, the player did not get an force! Here my ...
5
votes
3answers
686 views

Can I swap out Farseer physics fixtures at runtime?

I am working on a 2D side-scroller using Farseer Physics Engine v3.3.1. In order to create a realistic physical skeleton for the player, I am using a method similar to the one explained here (See ...
2
votes
1answer
324 views

Odd offset bug in Farseer/XNA/C#

So I'm using Farseer to create an immovable object: [...] private Body body; public Immovable(World world, ContentManager c, String s, int posx, int posy, int w, int h, String user_data) { ...
0
votes
0answers
76 views

Farseer physics not working

I have just started to port a load of projects from FPE2.x to FPE 3.3.1 and i am having some problems with all my physics. This is a sample of what i am doing which demonstrates my problem ...
1
vote
0answers
138 views

Farseer Physics EndContact events don't fire for all registered delegates

Here's my situation: I have several objects that contain a body and a fixture. They are set to sensor = true; atmosphere = BodyFactory.CreateCircle(world, atmosphereRadius / Level.METER_IN_PIXELS, ...
1
vote
3answers
660 views

Unable to find good parameters for behavior of a puck in Farseer

EDIT: I have tried all kinds of variations now. The last one was to adjust the linear velocity in each step: newVel = oldVel * 0.9f - all of this including your proposals kind of work, however in the ...
0
votes
1answer
1k views

How do I reset a game level

I have managed to implement a screen state system which I use to access the game. When the the character has collided with an enemy tile the game ends by going to a seperate game over screen. After ...
1
vote
1answer
147 views

How to pin a body in case of collision in Box2D or Farseer?

I'm trying to get an understanding for the Box2D/Farseer physics engine by implementing a small air hockey simulation. There, I have the problem that the CPU player attacks the puck, kicks it, but ...

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