2D games are drawn in a two-dimensional space using two-dimensional objects. To represent its position, each game object will have an `x` and a `y` coordinate.

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Making a 2d sidescroller RPG with GameMaker Studio [on hold]

Is is possible to make a 2d sidescroller RPG with GameMaker Studio?
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0answers
10 views

Unity 2D detect if swipe goes through an object

I am developing a game in unity with flying arrows that the user tries to deflect by swiping through them (changing their direction). I can get the arrows to move with the swipes, but they move no ...
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1answer
22 views

Slick2d - state change problem

In my slick-based game, I have 4 states - introState, gameState, pauseState and menuState. From the gameState, I want player to go to either menuState or pauseState. To do that, I did this in ...
2
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2answers
189 views

Problem loading level layout from file in Breakout clone

I'm working on a Breakout clone and I decide to use files as method to load level layouts. The file is something like this: N,N,N,N,N N,N,N N,N,N Only indicates what type of brick I'll ...
3
votes
4answers
499 views

Algorithm to verify if a shape is inside another

I have a rectangular canvas and I need to verify whether a shape is totally inside that canvas or not. The shape can be lines, ellipses, arcs, rectangles and arbitrary polygons. Does anyone know a ...
3
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2answers
160 views

How do I mask graphics in Unity to create a searchlight effect?

I'm trying to make a searchlight-style punchout mask effect in Unity 2D. This is the effect I'm looking for: That animation is made in Fireworks, using a white to black gradient circle masked on ...
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1answer
134 views

Spritekit - gradually apply force vector in different direction (space ship turning)

I have a space ship that I'm applying a force vector to using a joystick for control. I would like this to smoothly fly around when I'm switching directions.. Exactly like minisquadron if you've ...
-1
votes
1answer
49 views

GLSL- How to change a certain color of a sprite, to another color passed into the shader?

I have been googling for over an hour, trying to find out how to do something very simple, which I see in tons of games. I tried to understand GLSL, but it seems like a ton of learning for a single, ...
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1answer
31 views

View Rigidbody 2D Wire Frame

Simple question. When I prototype game ideas I like to create objects without having to attach sprites. Is it possible to create a Rigidbody 2D in unity, set its size and render its wire frame? I am ...
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1answer
226 views

Sorting for 2D Drawing

okie, looked through quite a few similar questions but still feel the need to ask mine specifically (I know, crazy). Anyhoo: I am drawing a game in 2D (isometric) My objects have their own arrays. ...
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0answers
22 views

need 2D/3D sprites [on hold]

I'm developing a game and need some sprites for it. What would be the best way to go about it? Can anyone suggest some person or site where I can get these done for free? Or in the worst case I can ...
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2answers
57 views

Weird GLM perspective problems with my 2D Game

I am trying to create the graphics system of a 2D game using OpenGL 3.3. To help me in this task I am using the GLM math libraries. However I am having some trouble. When my objects (for now they ...
-1
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0answers
35 views

How is PokeMMO made (2D) or how they did it? [duplicate]

PokeMMO is a 2D Java Game, i wonder how they made it does some know how they did it?
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1answer
54 views

Dealing with back to front drawing with alpha blending and z buffer for a list of 2d quads

I'm using depth buffer as a layering system for my 2d render and I have to draw them from back to front to make semi-transparent quads work out. The problem is I have to sort my quads vector based on ...
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2answers
39 views

How to move an object uniformly from one point to another at a fixed angle? [duplicate]

In my 2d java game, I need to move Point objects (as projectiles) from Enemy object to Player object in a straight line. I did some research and found out that I can use atan2(x, y) method of Math ...
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1answer
239 views

Scaling background without scaling foreground in platformer?

I'm currently developing a platform game and I've run into a problem with scaling resolutions. I want a different resolution of the game to still display the foreground unscaled (characters, tiles, ...
0
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1answer
211 views

Is there a standard way to track 2D tile positions both locally and on screen?

I'm building a 2D engine based on 32x32 tiles with OpenGL. OpenGL draws from the top left, so Y coordinates go down the screen as they increase. Obviously this is different than a standard graph ...
-1
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0answers
32 views

C# XNA 4.0 2D Tilemap based detection [closed]

So, the first thing I want to mention that I seem to do differently than others is I don't use a velocity, I just increment the player's position by 2 px every keystroke. What I am trying to achieve ...
0
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0answers
18 views

What would be a good engine to build an area-based TBS/choose-your-own advanture hybrid in? [closed]

I am looking for some beginner oriented software (on the level of Game Maker Studio) that would allow me to build a TBS/choose your own adventure hybrid. I want it to be part area based (to look like ...
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0answers
29 views

Very strange trigger behavior in Unity2D (4.5)

I am developing 2d platformer and I've faced with a very strange triggers behaviour in Unity. I have made the enemy that can throw objects into main player. So I have made two empty GameObjects with ...
1
vote
1answer
71 views

Help finding time of collision

I am making a simple game right now and am struggling with collision response. My goal is to someday be able to turn it into a 2D platformer but I have a long way to go. I am currently making this in ...
1
vote
1answer
291 views

2D map/plane with nodes overlayed that supports panning, scaling and clicking on nodes

I'm trying my hand at Android development and seem to be running into an invisible ceiling in trying to get what I want accomplished. Basically I'm trying to create an app that renders a 2D surface ...
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0answers
19 views

Direct X 11 2D Books/Resources [closed]

I would like to learn Direct X 11 (coming from XNA) but I cannot find any good resources. All the resources I found either focus exclusively on 3D, or use so many third-party solutions it does not ...
59
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5answers
9k views

Implementing a 2D destructible landscape (like Worms)

What steps would be involved in constructing a destructible 2D landscape, like in Worms? Ideally, What are some ways that this process could be made efficient as possible?
5
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3answers
496 views

Solving 2D Collision Detection Issues with Relative Velocities

Imagine you have a situation where two objects are moving parallel to one-another and are both within range to collide with a static wall, like this: => 20m/s => 40m/s +==========+ ...
3
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3answers
146 views

Obstacle Avoidance steering behavior: how can an entity avoid an obstacle while other forces are acting on the entity?

I'm trying to implement the Obstacle Avoidance steering behavior in my 2D game. Currently my approach is to apply a force on the entity, in the direction of the normal of the heading, scaled by a ...
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0answers
28 views

Phaser / PIXI: World size vs. Stage size

I am using Phaser to build a "zoomable / pannable" 2D galaxy with the intended functionality being that the player's home planet is always in the middle of the World coordinates. I have a problem ...
2
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0answers
91 views

How to properly do top-down aRPG melee attacks?

I'm reposting this from my own thread in reddit's gamedev community, since there were too few responses: I've been looking for some info on that, but I mostly find articles on the design of such ...
7
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4answers
1k views

Is a multiplayer game in JavaScript a bad idea?

What are the possible downsides to using (client side) JavaScript when creating a multiplayer game? Game description: It's an MMORPG/RTS. That means players actively contribute to structures in the ...
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1answer
67 views

Warp GameObject Size When Entering/Leaving Area

Below I have an image describing the desired functionality I am going for. Let's say you control a square and when you move this square into a given area, any part of your rigidbody/model inside of ...
1
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1answer
99 views

Libgdx 2D Game, Random generated World of random size, how to get mouse coordinates?

I'm a noob and English is not my mothertongue, so please bear with me! I'm generating a map for a Sidescroller out of a 2D-array. That is, the array holds different values and I create blocks based ...
2
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4answers
269 views

Is moving entities between sectors of a grid spatial partitioning inefficient?

I'm using a grid system for spacial partitioning. If I have moving entities, will I have to reassign every entity to its correct section every frame? Surely this is inefficient. Have I got the wrong ...
5
votes
1answer
422 views

Unity3D - How to tessellate 2D sprites?

I use dynamic vertex lighting on 2D sprites. On larger sprites the lighting is uglier than on smaller ones. This is because every sprite is just a quad of two triangles. Not enough vertices there for ...
3
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2answers
162 views

What is the pixels to units property in Unity sprites used for?

I'm starting to learn Unity for 2D development. So, I am importing several sprites into the game, and I couldn't help but notice that there is a "pixels to units" property, by default on 100. I ...
1
vote
1answer
58 views

Correct multiplication order for a 2D Matrix

I'm currently trying to create a camera and entity/model matrix for my 2D game similar to that of Unity3D. I've already tried to find answers to this question on stackoverflow/gamedev but i couldn't ...
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2answers
134 views

Simultaneous Animation for a GameObject - Unity3D

Its my second week with Unity. I am doing a 2D game and I have a small GameObject which should change its sprite along with following a definite path defined in Animation Curves. I did both of them ...
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0answers
31 views

Unity - 2D - Scaling to fit between two objects

The game is a top down 2d shooter and I'm facing trouble in doing this : - I got a player 2D ship - The player fires laser, which is a long thin image with box collider attached. - What I want is that ...
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1answer
57 views

I can load new tiles but how do I load new chunks?

I have successfully been able to add new tiles and place random trees on a 2d map grid however I haven't used chunks. I just load a new tile when the player moves and save it to the map array. But I ...
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0answers
45 views

2D Vector Graphics in XNA

I'm here today to ask about Vector graphics in XNA, my first question being whether it is possible or not. The only other question on here that I have seen in relation to this is simply asking which ...
7
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2answers
185 views

How to avoid subpixel values in a resolution independent 2D game with orthographic projection?

I'm trying to do resolution independent rendering of moving sprites in a 2D game. My plan is work in a fixed coordinate system in my world (for example 960x540) and use orthographic projection to ...
2
votes
3answers
144 views

Are Tilesets more efficient than single pictures?

i want to program a 2D game and as i did lots of tutorials and read books about creating simple 2D games, nearly always tilesets were used for the graphics. But are tilesets really more efficient ...
54
votes
8answers
7k views

2D graphics - why use spritesheets?

I have seen many examples of how to render sprites from a spritesheet but I havent grasped why it is the most common way of dealing with sprites in 2d games. I have started out with 2d sprite ...
0
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2answers
338 views

How do I add an image inside a rectangle or a circle in JavaFX?

Suppose we have a rectangle called r Rectangle r = new Rectangle(40, 20); and an image called image Image image = new Image("...src for image"); How do I fit the image inside the rectangle? ...
2
votes
1answer
265 views

Fine-tuning parallaxing objects in 2D games

I'm making a 2D platformer game and I'm having a hard time figuring out how to fine-tune parallaxing objects in-game quickly enough. Problem is I don't even know how to make it faster, so I'm ...
2
votes
1answer
102 views

How can I dynamically load the correct sprite from a sprite sheet?

I am making a simple card game in unity. The game is based on a standard 52-card pack, with identical backs for unique faces. In my particular game different cards are worth different values and have ...
0
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1answer
263 views

Java 2D World: Convert from mouse screen co-ords to screen co-ordinates?

I have a 2D world background made up of a Grid of graphics, which I display on screen with a viewport (800x600) and it all works. My question is I have the following code to convert the mouse ...
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4answers
104 views

How to handle a negative coordinate 2d map with a growing map size

I love this procedural generation theory and have been messing around with it. However I'm having trouble wrapping my head around how to store my map data. Usually I store my map data in a 2d array ...
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0answers
53 views

Cubic bezier polygon clipping

I have a large cubic bezier defined 2D polygon area which I need to render in DX11 real-time to create as many 4096x4096 textures as needed. An average control point count would be around the 12k and ...
0
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1answer
21 views

Align SpriteText position

i have this function which aligns text. static function AlignTxt(obj : GameObject, txtAnchor : SpriteText.Anchor_Pos, txtAlign : SpriteText.Alignment_Type) { ...
0
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0answers
18 views

Implementing Normal Maps with Unreal 4 Flipbooks

I'm new to Unreal 4 and just started using 2D. I have normal maps for my sprite that I'd like to put in so that the sprite responds to light as if all the details were modeled in 3D. How should I do ...