15
votes
3answers
2k views

Best way to store game-wide variables

I have an options Screen for things like Difficulty, Resolution, Full Screen, etc but I'm struggling to find the best way to store/obtain these variables at game time. The way I've currently decided ...
0
votes
1answer
61 views

Detecting Hitbox Collisions (Rectangle)

So I have some Hitboxes set up on 2 classes, HealthPickup and Player. public static Rectangle Hitbox; public override void Initialize() { Hitbox = new Rectangle(Pos.X, Pos.Y, 32, 32); } That's ...
1
vote
1answer
132 views

How to compress Unity apk output?

I made a game with Unity but the size of .apk file got so large, it is about 70mb... Is there some way that I can compress my apk file?
0
votes
0answers
113 views

Zelda-style Top-down RPG. Storing data for each tile type

I'm creating a Zelda-style RPG using Tiled, C#, and MonoGame. When my code parses the .tmx file, it will get a number to associate with each tile type based off of their position in the tile sheet. If ...
4
votes
1answer
229 views

Unity falling body pendulum behaviour

I wonder if someone could provide some guidance. Im attempting to create a pendulum like behaviour in 2D space in Unity without using a hinge joint. Essentially I want to affect a falling body to ...
0
votes
1answer
183 views

How to properly handle top down 2D collision?

I can never seem to get this right, well polished at least. I'm creating a top down game in XNA, and collision has always been an issue for me to do properly. Detecting collision is fine, but ...
1
vote
1answer
127 views

How to correctly handle multiple movement key presses resulting in double the speed?

I am trying to implement acceleration and drag into my top-down 2D game. The player can move using the WASD keys. Acceleration works fine, but the way I handle the directional velocity causes the ...
2
votes
1answer
90 views

Issues with 2D Body/Limb system [closed]

In my game I have programmed Body and Limb classes. The Body is guaranteed to have an origin in the center of its sprite. The Body class has a List of children Limbs, each with their own offset. Every ...
1
vote
1answer
105 views

How to rotate vertices of 2D shape using a transform matrix?

I am making a top-down 2D game and am currently working on implementing improved collision using SAT. I programmed a Shape class with a Vector2 center that is its position in world space. On top of ...
1
vote
1answer
173 views

How do you make a bullet ricochet off a vertical wall?

First things first. I am using C# with XNA. My game is top-down and the player can shoot bullets. I've managed to get the bullets to ricochet correctly off horizontal walls. Yet, despite using similar ...
2
votes
2answers
83 views

How to use camera transformation without depending on (1,-1) scale during spriteBatch.draw()

I am creating a 2D platformer type game in XNA. I currently have a camera object, with a position/rotation/zoomlevel that I use to generate a transformation matrix to pass to SpriteBatch.Begin(). ...
0
votes
1answer
2k views

Change the sprite of a Object in Unity

Inside the script code of the the hero(object) I want add the possibility to change its sprite. So the player hits the space button and the sprite changes into the other sprite already added to the ...
0
votes
1answer
110 views

Tile System with moving Platforms

I am using a tile based system where the level is stored in a char: char[,] Level2 = {{'.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.'}, ...
1
vote
2answers
2k views

Unity 2d: How stop movement when object hit a wall

I created a square that slides on a flat ground. public class PlayerMoveScript : MonoBehaviour { float move = 0; void Start (){} void FixedUpdate () { if (move == 0) { ...
2
votes
2answers
124 views

XNA: Non-overlapping shadows

I want to create an effect similar to the following in XNA / MonoGame: There's a background and a semi-transparent shadow consisting of several objects (two circles in this example). However, the ...
0
votes
1answer
2k views

Switch character to play animation() in Unity3D using c# [closed]

I have two or more 2D character (Character A, B, n..). I made an animation on the character using the Animator class "AnimCharacter.cs". if i press the 'PgUp' character 'A' can call the function ...
1
vote
1answer
247 views

Unity seperation of prefabs with two dimensional terrain generation

I have the following function: public void Spawn () { GameObject g = ((GameObject)Instantiate (hills [Random.Range (0, hills.Length)], new Vector3 (0.0f, ...
1
vote
1answer
204 views

Strange collision behaviour in 2D game even though the collision is very basic [closed]

I have a player ship (cube) and some enemy laser projectiles. When the player ship has position X values greater than 1, collision with the enemy projectiles occur but when it has lower X values, the ...
1
vote
2answers
167 views

XNA blurring moving images

Why does XNA blurs the images which moves less than 1px in between two draws? It is quite annoying, because everything looks really blurry. Is there a way to disable it? I have tried to set the ...
2
votes
1answer
194 views

Unity Get corners of camera in world space

I'm making a 2D game and i need to get the corners of the camera in world cordinates. Is this possible in unity?
0
votes
1answer
241 views

XNA 2D Camera, zoom into player

My 2D camera follows the character fine without any zooming. However, when I tried adding a zoom feature using the Matrix.CreateScale(), the camera no longer follows the character properly. public ...
2
votes
1answer
128 views

2D lighting causes black rings to appear

A year ago I implemented 2d lighting in XNA using sprites. The sprites I used were created by placing a soft white photoshop brush on a transparant background. The result was this: (lights only) ...
2
votes
1answer
126 views

How to smoothly track and draw player movement?

I am currently using C# XNA Framework to simply connect some development concepts that I've learned/used over the past few months. Right now I have a Web Service that keeps track of connected clients ...
1
vote
1answer
101 views

Better way to handle ordering and visibility of renderable objects?

I'm just wondering whether there is a more effective way to handle the ordering and visibility of renderable components that fits into the design of my already existing engine. How I do it now: In ...
0
votes
1answer
55 views

Farseer Circle Body Problems, Please help!

I have created a circle body class, but in game my player body just passes through it. the circle will not move, only rotate. however when i create the circle body just straight up, raw in the game1 ...
5
votes
2answers
1k 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 ...
1
vote
1answer
227 views

Lighting Covering Up Sky ( XNA / C# )

I have a 2D tile-based lighting system which is drawn onto a Render Target. I am also drawing a background which involves mountains, sun/moon, and clouds. There is also the unlit game; blocks, ...
0
votes
1answer
160 views

Efficient approaches to updating adjacent grid tiles when one tile is disabled?

I'm trying to update the surrounding grid of tiles if one of them is disabled (not removed). For example, imagine we have a grid of tiles each with x representing one texture: x, x, x, x, x, x x, x, ...
2
votes
2answers
1k views

Algorithm for continuously generating a tile map for a topdown 2D game? [duplicate]

In essence, what I'm looking for is a procedural 2D tilemap continuously generated in a fashion like Minecraft - which is to say generated as the player approaches the edges of the already explored ...
0
votes
1answer
110 views

Why do I get an exception when accessing my sprite members in this fashion?

I'm getting a NullReferenceException error on the line where I do new Vector2(...). I think the problem is with the variables I'm using even though they're working to control the player sprite, so ...
1
vote
1answer
340 views

Grid-Based 2D Lighting Problems

I am aware this question has been asked before, but unfortunately I am new to the language, so the complicated explanations I've found do not help me in the least. I need a lighting engine for my ...
0
votes
1answer
169 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 ...
1
vote
1answer
185 views

How could I figure out the shortest way to turn, and whats the angle? [duplicate]

I'm creating some robots for my tank game. I want them to find each other and shoot each other down, so I'm trying to implement a way for them to turn towards each other, and turn the shortest way. ...
2
votes
2answers
254 views

Large resolution differences

I want to develop a game on multiple devices such as PC, Android or IOS. Want it to be in 1080p, but that means a massive scale down for the smartphones. I know how to do that, just render everything ...
0
votes
1answer
146 views

Formula throwing a ball to destination [duplicate]

I am throwing a ball using this: double v, vx, vy, alpha, t2 = 0; if (Keyboard.GetState().IsKeyDown(Keys.Up)) { alpha = MathHelper.ToRadians(60f); v = ...
-4
votes
2answers
449 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
251 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: ...
4
votes
2answers
154 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
361 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
674 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. ...
1
vote
3answers
197 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
720 views

Implementing water effects (splashes) into XNA 4.0 game [closed]

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
535 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
781 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. ...
5
votes
2answers
481 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
189 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
1answer
138 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
252 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 ...
39
votes
3answers
8k 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
172 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!) ...