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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0answers
37 views

What is the technique for complete the background of ground (2D) [on hold]

What is the technique on programming for complete the ground with a background repeated. See that image for understand: (Image from Chariot, game for xbox one) In that image, you can see an example ...
2
votes
1answer
49 views

2D collision of thrown objects in Unity

I am currently working on a game inspired by traditional 2D Zelda games ("Link To The Past", etc.) in Unity using the 2D settings. I am looking for the best way to handle objects that the character ...
3
votes
2answers
2k views

2D Collision masks for handling slopes

I've been looking at the example at: http://create.msdn.com/en-US/education/catalog/tutorial/collision_2d_perpixel and am trying to figure out how to adjust the sprite once a collision has been ...
0
votes
0answers
23 views

rotate to movement direction [duplicate]

If I have a player character that can move 8-directionally, I can set the rotation of the player to face the direction of movement. But if I want to smoothly rotate to a direction, sometimes the ...
-1
votes
0answers
17 views

LibGDX/Java - IllegalArgumentException causes my game to crash whenever my main character touches a Coin [on hold]

Trying to figure out why my Android game crashes whenever the player touches an animated coin. I have attached an image of the LogCat and my code is below (NOTE: all game objects in ![Renderer] are in ...
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2answers
49 views

How to draw a textured 2D square using OpenGL

I am attempting to get started using OpenGL, and have learned how to open a window and draw basic shapes. However, I do not know how to texture them and have been unable to find any tutorials on how ...
1
vote
1answer
174 views

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

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 ...
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votes
1answer
877 views

Slope polygon collider 2D causing box collider 2D to 'bump' while sliding on it

I'm doing procedural terrain generation. So far I've created the mesh, and attached a 2D polygon collider to it. The terrain is made up of hills going up and down. After doing so, I put a 2D rigid ...
3
votes
1answer
100 views

Isometric graphics with fake perspective

Diablo 2 is a game with isometric graphics. However, unlike other isometric games, D2 has the option to activate perspective. Obviously, the D2 developers found a clever trick to convincingly fake ...
0
votes
2answers
51 views

XNA - Card Game - 3D vs 2D vs Primitives [on hold]

I'm starting a new project in XNA which will be a card game. What is the best way to implement my cards? Since I want to rotate these, they'd have to be somehow displayed 3D. The game itself will be ...
3
votes
1answer
66 views

Sending Client Input to Server (which way?)

I am trying to get networking working for my game, I've read several sources of information about this subject but one thing is still unclear for me. The way I process client input is by executing a ...
-1
votes
0answers
32 views

LibGDX - Is it worth making a World class for my game? [on hold]

Right now I pretty much have a World class across 3 classes (Player, Game, Renderer) if that makes sense? Game is where game objects are initialised, and Renderer just draws the objects onto the ...
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votes
1answer
77 views

How to show my XNA game in form C#

I have a game in XNA, I want to connect this game with WindowForm to show for example the distance and the position. I tried to apply many tutorials that talking about this. but here is my problem : ...
0
votes
1answer
38 views

How do I split a button graphic into a 9 patch?

I understand what a nine patch is but I don't understand how to create one with code. I've made an image with a 1-pixel black border, but how do I turn that into a nine patch? How do I make a nine ...
1
vote
2answers
47 views

Collision between Mesh Plane and 2D Sprite

I've just recently started programming using Unity and made a couple of games with it, I'm trying out more and more advanced stuff as I do more games, but right now... I'm trying to make a game ...
5
votes
1answer
616 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 ...
1
vote
1answer
118 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 ...
1
vote
1answer
80 views

Resolving penentration after collision using Separating Axis Thereom

I implemented collision detection in my game using SAT. The detection works, but I'm trying to use the algorithm to figure out the penetration vector of the two OBBs and push them apart (before doing ...
3
votes
2answers
106 views

Bevel outline algorithm in 2D

I'm writing a program that creates animated blobs in 2D, to simulate cells. In order to beautify these objects, I'd like to give them a 3D look by adding a bevel-effect. How can this be achieved? ...
1
vote
1answer
47 views

Simplified aerodynamics for 2d (top-down) airplane

I am writing a top-down 2d game, in which the player can control an airplane via the WASD keys. The W key should move the plane upwards (north), the A key to the west, and so on. Now I need a ...
0
votes
1answer
41 views

Dealing with multiple 2d sprite animations for the same object

I am using libGDX for a 2d game. Some of my in-game objects have animations, for example a soldier in top-down view that has a walking animation. That is working fine. Now, while walking, this ...
0
votes
1answer
23 views

Javascript 'camera' following object vertically without use of engine like Phaser or canvas [on hold]

So I have to make a JS game for school (I'm an absolute novice when it comes to JS) in Adobe Edge without the use of a game engine. I've been attempting to make something like this game and so far ...
0
votes
1answer
163 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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votes
1answer
53 views

Yeild waitForSeconds(5.0) is not working

I am trying to call another function continuously from my Update() function. So, I have used yield WaitForSeconds(5.0); but, the it stops for the first 5 seconds and it does not stop the next time it ...
0
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1answer
52 views

Why does this code not update my object's position?

I am trying to move the object in my frame in Time.deltaTime. I have not taken care the speed yet but the problem is, the object is almost at position (0,0) after I have multiplied the x & y axis ...
-1
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0answers
61 views

Why does this code update my object's position so fast? [on hold]

I was working on make my object appearing in the screen in random position. So I used Vector3.Lerp as it was mentioned in this question. I modified the code a bit as I was getting too much error and ...
0
votes
2answers
60 views

What is the best practice for handling touch events on different GameObjects in Unity2D?

First of all I want to describe what I have in my scene. 1. Joystick. 2. Main character that has link to joystick and handles touch events from joystick. 2. Buttons. 3. Other GameObjects that must ...
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0answers
35 views

How Do I Implement Modern Smooth Animation Methods and Shapes? [closed]

I have noticed new methods of animation and drawing arising, while I can explain some or come up with algorithms for others. For example, I was watching a video by pewdiepie and I noticed the ...
0
votes
2answers
147 views

Can the GUI be used to create game objects?

I want to be able to position 10 various game objects (sprites) within the area of the screen which will be dynamically sized accordingly to the screen size of the device. The area in which I want to ...
1
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0answers
103 views

How can I modify my procedural shadows to also show some of the walls?

I'm rendering shadows in Libgdx with the method from this tutorial. I think it's a nice and easy method. I render all my shadows in a framebuffer, then invert it. Before invert: After Invert: ...
0
votes
2answers
82 views

32 bit or 16 bit textures

I'm trying to build some 2d character with Photoshop and Spine. By now, I have created some of my characters using 16 bit color depth images in Photoshop. Now, I wonder whether I have to use 32 bit or ...
1
vote
0answers
33 views

Setting the main camera's size to be equivalent to the device's width and height

Making a 2D game with Unity. I need a way to set the main camera's width and height to be equal to the mobile device's resolution. So if you're using an iPad Mini 3, then the main camera will be 2048 ...
0
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2answers
94 views

How to reverse gravity in Unity

I'm trying to figure out how script gravity reversal on collision with an object. How can I reverse gravity?
3
votes
1answer
220 views

How do I handle rope physics with fixed ends and a sliding weight?

I've been interested in rope physics recently—I've successfully implemented a simple Verlet rope with moveable ends. Now I am trying something a little different: I want to start by recreating the ...
1
vote
1answer
45 views

How do you save Path2D data?

I am making a java game using path geometry. Is there any way to save the data stored in a Path2D to a file?
0
votes
2answers
1k 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? ...
61
votes
9answers
5k views

How does one prevent homing missiles from orbiting their targets?

I am developing a 2D space game with no friction, and I am finding it very easy to make a homing missile orbit its target. I am curious about anti-orbiting strategies. A simple example is a homing ...
0
votes
1answer
62 views

Best way to go about collision between rectangle and bool array containing pixel data?

Basically, if I have an array along the lines of bool[] collision; Filled with a value for each pixel in the sprite I am checking collision against (pixel 1 = true, pixel 2 = false etc), how do ...
0
votes
1answer
268 views

Issues with Sine Wave Generation and Rotation

I'm working on generating objects in sine wave that lets you specify parameters that are start x, end x, start y, and end y position. Below is the method that I used to generate the debris void ...
0
votes
2answers
1k views

How do I calculate the z-coordinate for a perspective-camera in 2D?

I'm new to LibGDX and trying to use DecalBatch with PerspectiveCamera, simply to have Z-coordinate for my sprites, as SpriteBatch does not offer that. However, I don't know how to calculate the ...
1
vote
1answer
185 views

How to keep player in the center of the screen but let him move to the edge of the map without moving camera there? [duplicate]

In my rpg-styled (top-down perspective) 2d game, I want my player to be at the center of the screen, while the entire world moves, giving the effect of player movement. I can make that, but my problem ...
0
votes
1answer
33 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
votes
1answer
24 views

Destroy a single list member

im trying to destroy a single game object using the following script but it destroys all of them , not the ones I want. I want to destroy the ones that the transform that holds this script collides ...
0
votes
1answer
172 views

Grid collision - finding the location of an entity in each box

I am trying to implement grid-based collision in a 2d game with moving circles. The canvas is 400x400 pixels. Below you can see the code for my Grid class. What I want it to do is check inside which ...
3
votes
3answers
444 views

Procedurally Generated Top View 2D RPG Map Generation

Procedural generation is a fascinating concept and is gaining popularity in the gaming industry. The thought of playing a game that has new content every-time the game is played is very exciting to ...
1
vote
1answer
101 views

How to draw a diagonal fade-in and fade-out?

How to draw a diagonal fade-in/fade-out in 2D using MonoGame draw API? For a simple (non-directional) fade-in/out drawing the background with alpha variation do the tricks, but what is the standard ...
0
votes
1answer
54 views

Bounding Box not rotating based on draw rotation (Java)

In the process of developing a 2D game and am having some issues with translating coordinates on rotation. The object being rotated is a sword that is attached to the player. The player currently ...
0
votes
1answer
64 views

Java 2d Gaming, best practice to update random falling objects

I'm new to game development. I do have basic knowledge in Java and also have moderately good experience in OOP from other languages. I started developing this simple 2D game as my first project. The ...
1
vote
1answer
64 views

Getting normal map of an image

I'm trying to achieve the results in this tutorial: Link So far, I was be able to do that; with these; public PixelMap GetNormalMap(double strength) { var newMap = new ...
1
vote
1answer
34 views

Positioning of AABB / Rectangles

I am wondering what is the best way to position rectangles, the ways I have thought of are: Have an x and y at upper left, then have a width and height Have an x and y at upper left, and an x and y ...