XNA Game Studio 4.0 is a programming environment that allows you to use Visual Studio to create games for Windows Phone, the Xbox 360 console, and Windows-based computers.
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0answers
33 views
Different ways to pass Textures into HLSL shaders
The GraphicsDevice class of xna 4 has the properties Textures and VertexTextures.
What is the exact difference? I don't really understand what MSDN tells me about this.
I usually use Effect ...
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1answer
68 views
2D collision resolving
I've just worked out an AABB collision algorithm for my 2D game and I was very satisfied until I found out it only works properly with movements of 1 in X and 1 in Y... here it is:
public bool ...
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1answer
42 views
Obtain rectangle indicating 2D world space camera can see
I have a 2D tile based game in XNA, with a moveable camera that can scroll around and zoom.
I'm trying to obtain a rectangle which indicates the area, in world space, that my camera is looking at, so ...
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4answers
164 views
The physics equation for a perpetual seesaw
I am trying to create a game that involves two or more people jumping on a seesaw and propelling each other in the air. I need help with the physics equations
Assume no friction and no air ...
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1answer
70 views
Changing enum in a different class for screen
I'm trying to make a start menu for my game and my code uses Enum's to moniter the screen state.
Now i want to change the screenstate declared in the main class, in my Background class
Screen screen ...
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1answer
107 views
How do I make a health bar that drains when the player takes damage? C#/XNA
I've drawn a Health Bar before and had it drain/refill on a button press using if statements and rectangles.
First I loaded the image, then I set a new rectangle to be equal to the image's height and ...
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1answer
83 views
XNA - Where should I start playing a song?
I am just wondering where is the best place to start playing the background song for a game. In the loadContent() method, Draw(), or Update() methods or when I initialize it?
I am trying to make it ...
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2answers
43 views
Collide with rotation of the object
I'm developing a mirror for lazer beam(Ball sprite). There I'm trying to redirect the laze beam according to the ration degree of the mirror(Rectangle). How can I collide the ball to the correct angle ...
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0answers
32 views
I am getting zero in my int x() when using Mouse.getstate().X?
Ok I have a Function int x(), which is used in
new Rectangle(x(),a,a,a);
in DrawMethod in XNA
but when I use it I get x() = 0 as as the answer.Here is my CODE:
int x()
{
int px ...
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vote
1answer
91 views
Parallax scrolling with 2D camera
I'm developing a 2D Platform game, I have a 2D camera, some backgrounds, and everything is working good. Now I want to implement parallax scrolling to give the illusion of depth in my game, but i ...
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1answer
80 views
XNA Arcball and moving model - the model is altered instead of the camera
I'm trying to implement an arcball type camera, I've got all controls working very nicely.
I can rotate the X/Y axis with my mouse and zoom in and out with the Z/X keys.
The problem is, that the ...
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0answers
68 views
XNA 4.0 - stretch full screen window?
I have an issue with resolution in XNA 4.0.
I'm running fullscreen. The game runs standard at 1920x1080, and can be scaled down to 1280x720.
The resolutions are both 16:9 (1920/1,5 = 1280, 1080/1,5 ...
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votes
1answer
95 views
Resize texture in code
I need to change texture size from for example 800x600 to 80x60. I have two ideas of how to do that, but i have problems with both approaches.
1) changre render target then draw and save resized. the ...
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votes
1answer
65 views
render sprites with a transparent background (XNA)
For my game I want to make a map of the world. Per country I made a file with the border of the country and the rest of background is transparent. This way all my files have the same width and height. ...
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0answers
43 views
What's the function to Stretch a sprite?
My goal is to find the function to stretch a sprite like my example below, and then get it to animate during a certain time. It is like an interpolation, where the starting point is the original ...
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1answer
87 views
What does Rectangle.Intersect means/do?
Ok I have two rectangles
one is the ball and other is the paddle.
1. if(ball.rectangle.intersects(paddle.rectangle))
y = -Math.Abs(y);
and
2. ...
2
votes
1answer
122 views
How to use elapsed game time for timing
I want that my ship shoots beam after every 2 seconds. How do I make that happen? and also I want that after 50 shots I want to give 10 seconds to reload the gun. I know both of my problems can be ...
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vote
1answer
47 views
Shared Texture2D in XNA
I am trying to define texture2d objects as shared. The reason of why I am trying to do is, I made an xna user control and my project loads unlimited (as much as the user wants) my XNA User Control. ...
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1answer
69 views
Texture2D can't find my sprite - how to setup the content directory in XNA
So I keep getting told that spr_lives can't be found. I'm working out of a book and using the samples given to me (have not changed the code or folder structure, so it /should/ work) but nothing's ...
2
votes
0answers
74 views
Monogame working with Krypton
I am trying to make a simple 2D game engine using Monogame and the Krypton 2.0 lighting engine. So far I have succeeded in rendering a light but I am unable to generate any shadows from any hull's. ...
0
votes
1answer
55 views
Mouse input not updating in custom XNA/Winforms panel
I have a custom Panel residing within my WinForm. the custom Panel holds the XNA rendering. So far, I've rendered an 3D test model. What I'm doing now is trying to handle the input.Using a camera from ...
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1answer
166 views
Collision Issues
When I run the collision code, there are no errors, but when I shoot the enemy nothing happens..... Any problems that are blindingly obvious?
Class Level Variables
public Model model { get; ...
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1answer
99 views
First person shooter camera movement
I am making an FPS in XNA. I cannot seem to make a FPS camera that I can move Forward, Back, Side to Side using the keyboard. How do I do that?
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votes
1answer
60 views
What is the best way to follow this book using XNA 4.0 instead of XNA 2.0
I found a reference to this book on the Microsofot Indie games forums: http://www.amazon.com/dp/1430209798/ref=pe_385040_30332200_pe_309540_26725410_item
I'm really interested in it, because the ...
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1answer
98 views
C# XNA4 2D Collision Detection
I am working on a 2D engine in Xna and am running in a bit of trouble with Collision implementation.
What I want to do is have an interface ICollidable that I can add to GameObjects that are ...
5
votes
2answers
208 views
Where to put Entity Death Events in a Component/System Design
Entities in my game are nothing more than a collection of components, tied together with an entityID. I have (near) data-only components, and systems that work on the data.
One of these components is ...
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1answer
74 views
Using a Vertex Buffer and DrawUserIndexedPrimitives?
Let's say I have a large but static world and only a single moving object on said world.
To increase performance I wish to use a vertex and index buffer for the static part of the world.
I set them ...
0
votes
1answer
82 views
How to control in the vertex shader where pixel ends up in the renderTarget?
What if I have an arbitrary renderTarget, that is smaller than the screen (say it is 1x1 pixel) and I want to make sure in the VertexShaderFunction that all my pixels end up exactly in that 1 pixel ...
2
votes
3answers
132 views
Should Draw method calculate the element's screen location?
Should Update take care of calculating the drawing position of element or should it be done exlusively in Draw method?
If I calculate the drawing position of element in Update and then store it as ...
2
votes
0answers
46 views
DepthStencilState System.ObjectDisposedException
I developed a Windows Phone 7 & 8 game and released it already. Having integrated BugSense, I received a handful of errors mainly from specific versions of Windows Phone 8 OS (mainly ...
