C# is a multiparadigm, managed, garbage-collected, object-oriented programming language created by Microsoft in conjunction with the .NET platform.

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21
votes
1answer
11k views

Orienting a model to face a target

I have two objects (target and player), both have Position (Vector3) and Rotation (Quaternion). I want the target to rotate and be facing right at the player. The target, when it shoots something ...
8
votes
3answers
3k views

How do I make a 2D game resolution independent?

I'm working on a simple 2D game. I've finished the mobile phone version. However, my boss wants the game to works on his RT. I'm doing the "conversion" but my buttons are in the wrong places, because ...
19
votes
7answers
32k views

In Pong, how do you calculate the ball's direction when it bounces off the paddle?

I'm trying to wrap my head around this very Hello World-y problem in game development. I've created a TicTacToe game in XNA so I guess the next step would be a Breakout clone. Keep in mind that I ...
25
votes
3answers
8k views

How to properly implement message handling in a component based entity system?

I am implementing an entity system variant that has: An Entity class that is little more than an ID that binds components together A bunch of component classes that have no "component logic", only ...
2
votes
2answers
3k views

Arrive steering behavior

I bought a book called Programming game AI by example and I am trying to implement the arrive steering behavior. The problem I am having is that my objects oscillate around the target position; after ...
10
votes
2answers
5k views

Microsoft XNA Platformer Example, is the Collsion Detection implemented accurately?

The example provided by Microsoft seems as if the collision detection (from what I can see) will have a small error. When the user collides with an Unpassable tile, the depth of the intersection is ...
5
votes
1answer
1k views

Turning a sprite such that it rotates in the direction that's most efficient

I have a sprite that moves from waypoint to waypoint. It turns to face its velocity vector, but not instantly (there's a rotation speed). The problem I'm having is, from one direction to another, the ...
6
votes
3answers
4k views

XNA - Static classes from game libraries executing after content pipeline extensions, how to avoid the problem?

Alright, formulated this way I'm sure it sounds obscure, but I'll do my best to describe my problem. First, let me explain what's wrong with my real source code. I'm making a platformer, and here ...
50
votes
7answers
7k views

2D Platformer AABB collision problems

I have a problem with AABB collision resolution. I resolve AABB intersection by resolving the X axis first, then the Y axis. This is done to prevent this bug: http://i.stack.imgur.com/NLg4j.png ...
11
votes
2answers
12k views

How do I generate projectiles toward the mouse pointer? [duplicate]

I'm making a top-down space shooter where the player controls a ship and can aim and shoot using the mouse cursor. How can I fire bullets from the ship at the angle from the ship to the mouse cursor?
7
votes
2answers
6k views

How to determine collision direction between two rectangles?

I am trying to figure out how to determine the direction a collision occurs between two rectangles. One rectangle does not move. The other rectangle has a velocity in any direction. When a collision ...
54
votes
1answer
13k views

Using component based entity system practically

Yesterday, I've read a presentation from GDC Canada about Attribute / Behaviour entity system and I think it's pretty great. However, I'm not sure how to use it practially, not just in theory. First ...
8
votes
3answers
4k views

Is there a simple way to group two or more sprites, so all of them will be dependent on each other?

I think that this question is very similar to this one, but I'm not sure if the answers are universal. So, my goal is: Place two sprites in fixed position, for example player and his eyes Make ...
12
votes
7answers
11k views

What is a good way to store tilemap data?

I'm developing a 2D platformer with some uni friends. We've based it upon the XNA Platformer Starter Kit which uses .txt files to store the tile map. While this is simple it does not give us enough ...
2
votes
3answers
3k views

How do I check collision when firing bullet?

I'm currently creating 2D game from top perspective. I'm having problems with bullets. Yes, I currently simulate their movement so user can see them (about 2x ). Moving them with // this is static ...
53
votes
7answers
7k views

What are the dangers of self-teaching game development? [closed]

I am about to embark upon a journey into game development. Following answers to my last question, I will be using C# and XNA. However, I don't personally know any other game developers and I don't ...
56
votes
13answers
30k views

What C# libraries can be used to support game development? [closed]

As games are based on many different subsystems things like graphics (DirectX, OpenGL, ...), sound (OpenAL, Ogg Vorbis, ...) or physics (collisions, ...), what libraries do you know that are useful ...
28
votes
6answers
9k views

A way to store potentially infinite 2D map data?

I have a 2D platformer that currently can handle chunks with 100 by 100 tiles, with the chunk coordinates are stored as longs, so this is the only limit of maps (maxlong*maxlong). All entity positions ...
22
votes
6answers
7k views

What designs are there for a component based entity system that are user friendly but still flexible?

I've been interested in the component based entity system for a while, and read countless articles on it (The Insomiac games, the pretty standard Evolve Your Hierarchy, the T-Machine, Chronoclast ... ...
42
votes
9answers
8k views

How are deterministic games possible in the face of floating-point non-determinism?

To make a game like an RTS networked, I've seen a number of answers here suggest to make the game completely deterministic; then you only have to transfer the users' actions to each other, and lag ...
17
votes
4answers
8k views

How can I acheive a smooth 2D lighting effect?

I'm making a 2D tile based game in XNA. Currently my lightning looks like this. How can I get it to look like this? Instead of each block having its own tint, it has a smooth overlay. I'm assuming ...
11
votes
2answers
25k views

C# creating a simple snake game

I was thinking about creating a snake game with C#, so I ran ideas in my head, and some problems came up. How can I track and output in the correct location the blocks that run after the snake's head?...
15
votes
2answers
5k views

Inheritance vs Composition

I make my money in C# Generally in that language I like to decouple everything to the high heavens using interfaces. This has served me well in enterprise code but in writing games in C# I find myself ...
12
votes
7answers
7k views

How can I implement hexagonal tilemap picking in XNA?

I have a hexagon tiled map in which i need to check when a hexagon is clicked. The hexagons aren't actually touching, rather they have a slight gap in between each of them. Does anyone know how I ...
6
votes
1answer
2k views

How to chain actions/animations together and delay their execution?

I'm trying to build a simple game with a number of screens - 'TitleScreen', 'LoadingScreen', 'PlayScreen', 'HighScoreScreen' - each of which has it's own draw & update logic methods, sprites, ...
3
votes
2answers
4k views

Loading and unloading “chunks” of tiles in a 2d tile engine with 2d camera

I am making a 2d tile based game in C# and XNA 4.0. I am having trouble loading and unloading "chunks" of tiles(blocks). The whole world is randomly generated and is infinate on both axis. How would I ...
14
votes
2answers
9k views

How do I disable texture filtering for sprite scaling in XNA 4.0?

I have a sprite that I'm trying to scale up in XNA, but XNA is applying some sort of texture filtering that smooths it and makes it look ugly. I'd like it to just do pixel doubling instead of ...
12
votes
5answers
4k views

How to properly handle collision in a component-based game?

Trying to wrap my head around the ways to properly handle collision in a game designed around components. I see many examples have some sort of PhysicsComponent that gets added to the entity's list ...
5
votes
6answers
3k views

Making classes available to others

I'm currently working on a 2D game engine in XNA, and I am very interested in architecture, and how best to let my game objects communicate. I know a lot of people use a Singleton design but I ...
4
votes
2answers
5k views

How to get mouse position relative to the map?

I'm creating a game in XNA similar to Minecraft - Minecraft 2D It looks like this Here's how it works: All blocks are generated once with fixed x,y coordinates and just re-drawn. //generate ...
5
votes
3answers
617 views

Is a custom coordinate system possible in Unity

Is it possible to create a custom coordinate system (i.e the one using double for coordinates or the one dividing the world into 'chunks' of safe size) not constrained by the floating point precision ...
5
votes
2answers
785 views

Something other than Vertex Welding with Texture Atlas?

What options (in C# with XNA) would there be for texture usage in a procedural generated 3D world made of cubes to increase performance? Yes, it's like Minecraft. I've been doing a texture atlas and ...
1
vote
2answers
232 views

Help on transition from one position to another

I'm pretty sure I'm over thinking stuff, but I can't seem to figure this out. I want to move the object from one location to another. Here's what I got. I searched this up earlier here, and I found ...
4
votes
2answers
2k views

Unity prefab script “GameObjects” can't be ones on the scene?

Currently, I have an object on the scene, and one in prefab. I want the prefab's script to reference to the object on the scene through the public GameObject obj; code. However, when I tried to ...
3
votes
1answer
991 views

How do I make a jumping dolphin rotate realistically?

I want to program a dolphin that jumps and rotates like a real dolphin. Jumping is not the problem, but I don't know how to make the rotation. At the moment, my dolphin rotates a little weird. But I ...
8
votes
1answer
5k views

Where to start writing games, any tutorials or the like? [closed]

I'm actually an industrial systems developer with knowledge of .NET C# and VB.NET, C/C++, Delphi, and an intermediate knowledge of 80286 Intel assembly language. I would be interested to learn how to ...
15
votes
2answers
8k views

How can I implement lighting in a voxel engine?

I am creating the MC like terrain engine, and I have thought that lighting would make it look a whole lot nicer.The problem is that the blocks are not being lit properly when a block which emits light ...
15
votes
2answers
10k views

XNA 2d Camera Scrolling - why use matrix transform?

I am making a test game where I want the level to be constantly scrolling. To create this effect I have established a camera class which simply stores a vector2 position and an enum direction. It also ...
13
votes
1answer
14k views

Get position of point on circumference of circle, given an angle?

I would like to know how to get a specific point on the circumference of a circle, given an angle. The diameter of the circle is 1, and the center point of the circle is { X: 0.5, Y: 0.5 }.
15
votes
9answers
6k views

Dynamic pathing algorithm for tower defense game

I'm making a Tower Defense and I need a good pathing algorithm for it. I have thought about Dijkstra but I need one that can be dynamic; it must be able to update itself when one edge is removed or ...
16
votes
4answers
2k views

How to colorize certain parts of a model - like RTS games have those team colors?

I am in a need of implementing something we see in RTS games: team colors. Basically, I am looking for a way to colorize certain parts of a model. How would I achieve this? I have no idea where to ...
5
votes
2answers
2k views

How do I resolve a collision of a rectangle with two rectangular tiles at once?

I am having some problems with collision detection between a player and the environment in a tile-based game. I have a player objects, Tiles and what I call MapObjects. The tiles are all 16×16. The ...
5
votes
1answer
3k views

Mouse location is off due to camera

I'm building a top down shooter but I have a little issue with my camera and mouse. When I add the camera that I use to my game (see here) my mouse pointer seems to be in the wrong location. When I ...
3
votes
5answers
4k views

Scrolling background loop

I'm trying to scroll my background forever and so I'm using the background image twice. When the first one goes off screen, it should relocate to the end of the second one. However, there seems to be ...
10
votes
5answers
6k views

45° Slopes in a Tile based 2D platformer

I want to have simple 45° slopes in my tile based platformer, however I just cant seem to get the algorithm down. Please take a look at the code and video, maybe I'm missing the obvious? //...
8
votes
3answers
10k views

How to decompose sprite sheet

I have a lot of spritesheets that are poorly formatted that I want to decompose, or split out into many small images, one for each sprite. If I can do that, I can use my custom texture packer tool to ...
2
votes
1answer
346 views

Handling game-state updates in an MMO while the player is logged out

I have a plan to build MMO strategy game like Goodgame Empire or Travian for windows phone. I want program it in C# Monogame (because I have some good experiance with it). But I still can't figure ...
4
votes
1answer
4k views

Orbiting a specific point - Orbiting Camera

How would I create a camera that with the mouse, it allows you to orbit around a specifc position, with the camera always facing that point? I would also like it to be able to always be at a constant ...
3
votes
2answers
2k views

Depth buffer and render target

When I use this RenderTarget: renderTarget = new RenderTarget2D(GraphicsDevice, GraphicsDevice.Viewport.Width, GraphicsDevice.Viewport.Height, false, SurfaceFormat.Color, DepthFormat.Depth24); ...
2
votes
2answers
21k views

How do I have a camera follow my object in Unity?

I have an object that automatically moves by itself and I want the main camera to automatically follow it.(Like in games such as geometry dash and jetpack joyride) This is the code for the automatic ...