Tagged Questions

0
votes
0answers
17 views

What's the idea on the base of rendering camera on 2D platformers games?

I'm programming a platformer 2D game, and I'm just wondering about how is done the right-left scrolling of the camera in a game like this. I mean, there is a background that need to change, there ...
-4
votes
2answers
78 views

2D Graphics in CMD in C#

So, almost every programmer used Doom as inspiration for new Projects, right? So Doom and other classic MS-DOS game were played on something like Command Prompt. How do you display images in Command ...
1
vote
2answers
66 views

XNA spritebatch.Draw: Which part gets colored by the color parameter?

Which part gets colored and how can I control it? I have a rounded block and my goal is to have the center filled with a certain color chosen by that parameter. Here's the picture: ...
2
votes
2answers
62 views

What's involved in resetting the graphics device?

I'm playing with XNA 4.0, VS2010. I've created a window (not maximized) and drawn some sprites. All is good until I resize the window, after which the sprites stop displaying or only partially ...
1
vote
3answers
162 views

Splitting tileset into individual tiles

I'm trying to split a tileset (from here) into individual tiles. For debugging purposes I wrote some code to split the tileset into individual tiles and display them on screen, but some aren't being ...
1
vote
2answers
139 views

Resolving 2D Collision with Rectangles

For about a week I've been trying to grasp the basics of collision, but I've been driven to the point of wanting to just give up on everything when it comes to collision. I just don't understand it. ...
0
votes
1answer
56 views

Putting a 2d camera into a gamestatemanagement sample [closed]

Hello everyone i am new to xna and i am trying to implement a simple 2d camera that follows my sprite around the level i am using a gamestatemanagement so i have the basic platformer with screen ...
1
vote
3answers
132 views

Creating an update “Tick” on tiles for simulating growth of plants

In my 2D tile based platformer I have added plants to be able to farm such as the simplest, grass, to other things like corn. Now each of these speacial tiles must be updated to show how much it has ...
7
votes
1answer
292 views

Implementing water effects (splashes) into XNA 4.0 game

I am creating a 2D XNA game and came across a tutorial on adding water effects (splashes) to an XNA game but after implementing it into my game I can't get it to scale down. Currently it takes up the ...
-3
votes
1answer
339 views

2D XNA Shooting Game [closed]

im doing a XNA game for a school project but im having trouble with the bullets. I can´t find any way to draw them or "invoque" them went i want. It is a modified Space Invaders that im trying to do. ...
-2
votes
3answers
333 views

Why use textures that are Power of Two? [duplicate]

Possible Duplicate: Why are textures always square powers of two? What if they aren’t? I am using C# and XNA (also MonoGame for other platforms than Windows) to create a game in 2D. ...
4
votes
2answers
237 views

Ball bouncing infinitely and constantly

Alright, so I've got hold of some simple physics mechanics, and am currently trying to implement bouncing. Based on the first answer of this question, I've developed the following algorithm: ...
3
votes
1answer
136 views

Figuring out which direction my object is facing on a 2D plane?

My friend and I were messing around in XNA 4.0 making a 2D racing game. Kind of like this one: Ivan “Ironman” Stewart’s Super Off Road. The problem we are having is knowing which direction the car is ...
0
votes
0answers
142 views

Rotating towards thumbstick - XNA - Xbox360 controller

I'm doing a topdown shooter game where I controll my character with an Xbox controller. The problem I'm having right now is that when I'm rotating the character it feels like it sticks at 0, 90, 180 ...
0
votes
1answer
88 views

Separating Axis Theorem fails at certain angles

I'm currently attempting to add an overlap tester for an axis aligned and orientated bounding box but the solution only seems to work accurately when the OBB's angle is between -10 and +10. As the ...
0
votes
1answer
163 views

Iterating 1D array and getting 2D tile position

I know I'm missing something very obvious here, but I have a 1D array that contains integers.I have a map that is 30 x 30 and the center coordinate is 0,0 (This is actually 3D, but I'm essentially ...
0
votes
0answers
80 views

Managing shots of the player [closed]

I'm currently developing a 2D Jump'n'Run and the situation is the following: The player has different weapons he can collect and is then able to shoot the weapon's projectiles (laser, rockets, ...
25
votes
3answers
3k views

2D water with dynamic waves

New Super Mario Bros has really cool 2D water that I'd like to learn how to create. Here's a video showing it. When something hits the water, it creates a wave. There are also constant "background" ...
0
votes
1answer
117 views

Storing large array of tiles, but allowing easy access to data

I've been thinking about this for a while. I have a 2D tile bases platformer in XNA with a large array of tile data, I've been running into memory problems with large maps. (I will add chunks soon!) ...
2
votes
2answers
317 views

2D Selective Gaussian Blur

I am attempting to use Gaussian blur on a 2D platform game, selectively blurring specific types of platforms with different amounts. I am currently just messing around with simple test code, trying to ...
1
vote
3answers
275 views

Making an AI walk on a NavigationMesh (2D/Top-Down game)

For some time I have been working on a framework which should make it possible to generate 2D levels based on a set of rules specified by level designers. You can read more about it here as I won't go ...
1
vote
1answer
113 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 ...
4
votes
1answer
605 views

2D Tile Game - Smooth Biome Terrain Transitions

While working on my 2D tile based game, I encountered a problem. I use Perlin Noise to generate the terrain. Some biomes (Desert, Forest, etc) have different flatness values depending on terrain, ...
-3
votes
2answers
291 views

Realistic Jumping [duplicate]

Possible Duplicate: How can I implement gravity? I want to make the jumping that my character does more realistic. This is what I've tried so far but it doesn't seem very realistic when the ...
-2
votes
1answer
271 views

C# XNA 2D Multiple boxes collision detection and movement

Hi, I've been making simple game where you shoot boxes that are coming towards you. All game objects are simple rectangles. Now I have problem with collision detection; how to check where the ...
1
vote
0answers
123 views

Beginner C# image loading woes - NullReferenceException [closed]

I keep getting a "NullReferenceExeption was unhandled" with "Object reference not set to an instance of an object." written under it. I have all of the images (png) correct with names and added to ...
1
vote
2answers
320 views

Rotating multiple points at once in 2D

I currently have an editor that creates shapes out of (X, Y) coordinates and then triangulate that to make up a shape of those points. What will I have to do to rotate all of those points ...
3
votes
3answers
343 views

How to design 2D collision callback methods?

In a 2D game where you have a lot of possible combination of collision between objects, such as: object A vs object B => object B vs A; object A vs object C => object C vs A; object A vs object D ...
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
0answers
172 views

Outline Shader Effect for Orthogonal Geometry in XNA

I just recently started learning the art of shading, but I can't give an outline width to 2D, concave geometry when restrained to a single vertex/pixel shader technique (thanks to XNA). the shape I ...
1
vote
1answer
196 views

How would I be able to get a game over screen using the pause function?

I am having problems with my snake game, when the snake collides with itself it draws a "game over" image in the background, but only while it's colliding with itself. I want it to behave like the ...
1
vote
1answer
322 views

default xna 4.0 gametime don´t works well for 2D physics

I am developing a game using Visual Studio 2010 and XNA 4.0, after advancing to some extent with the project (a platform based 2d platformer msdn starter kit) I got to test it on different computers ...
0
votes
0answers
110 views

Rendering light rays that intersect the viewport but have off-screen sources (XNA)

I am creating a very simple 2D navigation app in XNA. The grid/world starts at (1,1) and carries on to infinity in the East and South directions. The view-port shows the world without any scaling ...
2
votes
1answer
123 views

Multiple images written and read from one meta-file?

Short version: I need a way to store multiple image files in one bigger file, to be used using C#, preferably easily compatible with XNA. The files will be read, written to, but also adaitional files ...
0
votes
0answers
213 views

Freedrag a sprite from a spritesheet around the screen (Windows Phone) [closed]

Hi I'm having trouble using the gesture freedrag, when I drag my displayImage rectangle which is the rectangle that display my sub-image, its just couldn't be drag, help is greatly appreciate, below ...
3
votes
3answers
396 views

Tile based platformer, using larger tiles?

So for my tile based platformer, It has a grid of tiles Occupying 1x1 block for each one. However, What if I want larger tiles? Maybe doors, tables, etc. They wouldnt fit in a 1x1 tile, so what I ...
0
votes
2answers
173 views

Implementing a multishot powerup for a top down shooter

I have a top down shooter wherein I generate a projectile on each mouse click at the player's position and translate it in a straight line until it reaches the edge of the screen. I also have ...
4
votes
1answer
179 views

Create shape from points / lines in editor and mathematically calculate nearest points within shape

If I want an editor that accepts "points" of a minimum of three (a triangle) and I just add some points first, like this: how can I mathematically connect these corners (points) into an object of ...
2
votes
0answers
1k views

Why is my deferred lighting implementation so expensive?

I've implemented deferred lighting and I tried to put about 20-26 lights on the viewable space of my map, and it brings down the FPS from 61 to 28-31. It also makes my VGA temperature to go from 68°C ...
4
votes
2answers
613 views

How to create biomes

I am creating an 2D XNA Tile Based Platformer. I have a tile engine and a world/terrain generator. However, I am trying to create biomes or areas, For example, Desert in one part of the world, ocean ...
0
votes
0answers
748 views

Random terrain generation with caves

I am currently working on a small game that will generate a world with caves and entrances to the caves, something like Terraria if you will. Today I reached some trouble on the world/cave generation ...
1
vote
1answer
506 views

Drawing 2D Grid in 3D View - Need help with method

I'm trying to draw a simple 2D grid for an editor, to able to navigate more clearly around the 3D space, but I can't render it: Grid2D class, creates a grid of a certain size at a location and should ...
2
votes
1answer
422 views

Why use 3d matrix and camera in 2D world for 2d geometric figures?

I'm working in XNA on a 2d isometric world/game and I'm using DrawUserPrimitives to draw some geometric figures... I saw some tutorials about creating dynamic shadows but I didn't understood why they ...
3
votes
4answers
692 views

Higher Performance With Spritesheets Than With Rotating Using C# and XNA 4.0?

I would like to know what the performance difference is between using multiple sprites in one file (sprite sheets) to draw a game-character being able to face in 4 directions and using one sprite ...
4
votes
2answers
457 views

Detecting collision on a grid with a fast-moving object

I am working in a 2D collision system where I need to detect a collision of a rectangle on a grid, but since the rectangle may be fast enough to jump more than one of the grid squares (sometimes ...
5
votes
2answers
3k views

C# Perlin noise - generating “endless” terrain chunks?

I'm currently writing a little side scroller in C#, to both learn C# and have fun. Right now I have a simple random number generator generating the world but it isn't exactly all that great - so with ...
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) { ...
5
votes
1answer
651 views

Infinite 2D Terrain

I was wondering how to create infinite 2D platform terrain. I've read about perlin noise and I have an idea I'd like to illustrate below. However, I have no idea how to achieve this. Are there any ...
0
votes
1answer
1k views

How to make a top down shooter? [closed]

I want to know is with XNA 4.0 (and C#) How do I exactly make a top down shooter? I have been looking for ages, but have been unable to find out how. If someone could tell me how to get started with ...
2
votes
4answers
768 views

What should I use (controls, methods) to make a 2D tile based map editor?

I'm making a 2d game where each tile is a square and it's viewed at straight angle, no skewing, no rotation, it's pretty simple. Two weeks ago I tried using DataGridView, but as the number of rows ...

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