2D refers to two dimensional space where coordinates are represented with X and Y values.

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3
votes
2answers
172 views

Retro Racing Renderer

While I have a lot of experience with coding SW&HW 3D rasterizers across multiple platforms and eras, I never got to coding a 2D renderer for a non-polygonal racing game with multiple rolling ...
0
votes
1answer
54 views

current value of x for vector2 game object

I just need to push my game object in y direction not in of its x position,I need to assign it a new position but unable to access its current x position value so that can make it fix on its x ...
3
votes
2answers
215 views

How to calculate faces involved in collision (Separating Axis Theorem)

I have a game engine created in javascript (https://jsfiddle.net/4gqsq8wf/) which uses collision detection via the Separating Axis Theorem. Currently, it does not have any means of resolving velocity ...
0
votes
2answers
2k views

What are the steps to instantiate a button in Unity?

Given a Canvas test_canvas containing a Button test_button and an empty GameObject that manages instantiation and scripts and the like called test_manager, what are the steps to instantiate this ...
1
vote
0answers
36 views

Weapon index sets index values to the same

i've got a question about my unreal blueprints. I've been trying to get this right for almost a month now, but i don't know how to fix this. These are my are down below and a small video to explain my ...
1
vote
1answer
118 views

How do you make a Pong slider using touch events for mobiles?

I am stuck with an issue of moving the slider on android mobiles with finger touch event while developing pong game in unity 3D, though its working fine for pc. This game is developed in 2D ...
0
votes
2answers
116 views

Rotate coordinates back after rotating game context (geometry)

To achieve something similar to the image below using HTML5 canvas one can simply write the following: var TO_RADIANS = 0.0174532925; context.translate(30, 20); context.rotate(30 * TO_RADIANS); ...
2
votes
0answers
66 views

How can I simulate these two droplet? [duplicate]

Below is a two droplet merging together,in 2d. I want to simulate the behavior when I exert combination force(through mouse or fling force on touch screen) on one of them to make them to be a larger ...
-1
votes
1answer
129 views

Using Physics.Raycast inside OnCollisionEnter2D function

void OnCollisionEnter2D(Collision2D collision) { foreach(ContactPoint2D contact in collision.contacts) { RaycastHit raycastInfo; ...
3
votes
2answers
739 views

How do I determine the draw order of isometric 2D objects occupying multiple tiles?

My current sorting method works only for objects that occupy 1 tile and fails for multi-tile objects. For examle, the bed in the above picture occupies 1×2 tiles, and the sorting fails. Also that ...
2
votes
2answers
398 views

Unreal Engine for 2d in c++ [closed]

I was about to start my journey on unreal engine but currently all of the tutorials we're all about blueprints in 2D games. I really want to make 2d games since I am not good at 3d (not yet). My ...
1
vote
1answer
166 views

How to detect collision position and that position's texture color in Unity?

I have a prefab and I use Circlecollider2D for physics operations. I want to detect the color of the contact position of the collided objects ? Is is possible by using Unity's collider classes ?
-1
votes
1answer
413 views

How can I set up a pixel-perfect camera using OpenGL and orthographic projection?

I am creating a 2D game using OpenGL and orthographic projection. For sprites, I use textured quads (actually two triangles). I want the pixel art textures for the sprites to be displayed in a ...
0
votes
1answer
50 views

How to display three dimensional Objects in a 2D Game using OpenGL and orthographic Projection?

I am creating a 2D (2.5D) game using OpenGL and orthographic projection. It is simple to have relatively flat objects, e.g. characters. I simply use a quad with a texture of the character and move ...
0
votes
1answer
149 views

Monogame / XNA - Multple 2D Cameras (Rectangle) on screen

I recently started building a simple 2D roguelike game using Monogame 3.4. I was keen on building the game "engine" myself as I saw it as a fun learning curve. Monogame was pretty much the best option ...
3
votes
1answer
186 views

Why does Unity increase the size of image when I use the image in Unity?

I try to make a game in Unity 2d. But when I drop the image in Unity the image size increases 3 or 4 times. Can I fix that or is this normal?
2
votes
1answer
81 views

Using world coordinates instead of pixels

I've been told that having a set pixels-per-world unit number is bad practice because it will not look the same at different resolutions. Because of this, I am trying to learn about using abstract ...
1
vote
1answer
52 views

Double Jump causing problems?

Here is my code. I have an empty Gameobject directly underneath the child with a small radius checking the ground every thing seems to be correctly covered, but for some reason the jumping mechanic is ...
2
votes
0answers
95 views

LibGDX - ShapeRenderer as principal game entity renderer

I am trying to make a 2D game that is just a bunch of default figures like circles, arcs and quadrilaterals with no textures (similar to Super Hexagon), and for that I was using C# and XNA long time ...
0
votes
0answers
117 views

Transition Idle to Running not smooth

http://gyazo.com/441ba7f4962cf1470692b437b8ae47a4 Hello, I'm following the unity tutorial for 3D character movement and, I'm trying to make the transition to idle and running but for some reason the ...
0
votes
0answers
78 views

Bad / clipped pixel rendering of a 2d sprite

I'm testing things in unity but I've run into this problem and i can't solve it... I have the following configuration: Images of the problem: As we can see in the problem images the pixels ...
1
vote
1answer
959 views

Unity 2D Graphics Optimization For Mobile Devices

I want some advices on how to create graphical assets for mobile devices so that the game will have a good performance and not lag on mobile devices. I had 3 issues with my games and that is they ...
0
votes
1answer
202 views

Touchscript: multiple overlapping colliders

Im building a tower defense game on unity and would like to allow the player to pan the camera on a large map. I am using touchscript to handle the touches. I made a testing project with the ...
-2
votes
1answer
67 views

Optimal trajectory of area exploration

I've got next problem. There is three objects: first one, with next characteristics: circular area of view, speed, drag coefficient; wind (or water current, doesn't matter; some sort of resistance) ...
1
vote
1answer
101 views

Why is Unity 2D Alpha-Blurring my pixel sprite?

So I have just brought in a place holder block for the ground in unity 2D, and it's 16 by 16 pixel image, and for some reason unity is automatically blurring the image. So I was wondering if there was ...
0
votes
0answers
110 views

Unity Quality Reduction only reduces my player sprite quality

I created a small map in tiled then imported it into Unity. A small sprite character is controlled by the player to roam about the map. I am experimenting with this for University and wanted to see ...
1
vote
2answers
489 views

Testing Unity 2D Physics

I am looking to push the 2D physics in Unity to the extent where when so much is going on that there becomes noticeable lag in a game. This is for testing purposes, so that when so much is going on ...
0
votes
1answer
116 views

Random Y Axis Movement Within Set Limits (C#)

I've searched everywhere for this answer but everything I find is in Javascript and a lot of it doesn't help/work in my situation since most of it is Vector3's and using each axis, and my game is 2D. ...
0
votes
0answers
90 views

how to move an object to the mouse in Java

I have just recently started using Java, literally 2 days ago, and I have run into an issue. While I have been easily able to figure out most of the syntax and methods, because I have used multiple ...
2
votes
1answer
293 views

2D Camera sizing and movement

Apologies if this is a basic question, or been asked a 1,000 times in the past... I'm new to Unity, and having problems understanding some of the basics to do with 2D cameras (orthographic), and ...
4
votes
1answer
342 views

2D Collision response - rotating, moving polygon hitting a wall

I'm trying to bounce a polygon that has both velocity and angular velocity off a (immovable) wall when one of the vertices collides with it. I can detect the collision, and I've worked out how to ...
2
votes
1answer
63 views

Short distances from reference point

I would like to compute short distance from reference point in 2d grid. To expose: 0, 0: not penetrable 0, 1: not penetrable ... 1, 1: penetrable ... I search an algorithm who return: 1, 1: 1 ...
1
vote
0answers
140 views

2D Parallax Scrolling

I'm trying to implement parallax scrolling and have a partially working equation (from a book I've read) but it doesn't fully align to the screen. I also want to stick purely to integer maths. I've ...
-1
votes
2answers
136 views

2D C# Collecting Item For Acceleration Unity

I have an issue regarding acceleration for Unity in C#, I'm trying to have my player collect an item and gain speed from it. Now, I have this working, but I need it to be a gradual acceleration, I ...
1
vote
1answer
226 views

Accessing the child sprites of a sprite sheet in unity?

I have a spritesheet set up with the individual sprite regions named in unity. I haven't been able to find out how to access these sprites by name?
1
vote
1answer
302 views

Making a zoom out/in space map in Unity

I'm new to unity, I was wondering how would one go into implementing a dynamic 2d space map. Let me give you an example what i mean. You see our solar system on the map, if you zoom out at a treshold ...
2
votes
2answers
497 views

C# 2D Enemy Follow Y Axis Only While Rotating to Look At Player (Unity)

I have a 2D game where the player can move up and down on the y axis, I need the enemy to rotate to look at my player (which I have working, but probably isn't the best method) while also moving up ...
0
votes
1answer
376 views

Efficient modification of Texture2D at runtime for a 2D painting game in Unity3D

I have spent some time looking for different solutions to be implemented in a mobile painting game I'm creating. At this time, everything is working but I have some serious performance problems on ...
0
votes
1answer
110 views

Working but flawed bullet spread (vector math)

I'm trying to implement random bullet spread into my game, and I've managed something that works, but is consistently flawed. The spread doesn't vary depending on the distance the mouse is from the ...
1
vote
1answer
92 views

Box2D No Gravity when moving against wall

I use Box2D in my current project and I have a problem with the gravity.. You can see my problem here: https://www.youtube.com/watch?v=2_kv9LkKwN4&feature=youtu.be when i jump normal everything ...
0
votes
2answers
253 views

How do I make sure the player model only moves 1 unit?

I am doing a school assignment based off of the Unity3D tutorial 2D RogueLike (all code available here) In my version though, the movement is not turnbased and I am having some trouble figuring it ...
0
votes
2answers
61 views

Calculate land center on grid

I have a grid based game. The main map is 2d array with land ids, something like this (here are 2 lands on the map, one formed where the 1's are and one formed by where the 2's are): [ 1 , 2 , 2 ] [ ...
1
vote
0answers
142 views

How do I create this type of mixed 2D/3D character model?

I'm interested in how this little Lively Hamster Flash game's character is modelled and animated. The head seems 3D. The back always shows a black outline, so I assume it is 2D. Is this a ...
2
votes
2answers
132 views

2D Simplex Smooth Cave Generation

So I'm creating a system of caves below my random terrain generation, and I'm using 2D Simplex Noise to do so and I have a pretty good grasp on generating the random caves. However, the cutoff from ...
1
vote
1answer
80 views

1D Simplex Noise Returns Same Generation

I've been using 1D Simplex Noise to create a random world surface, and it keeps generating with the same looking surface terrain, with some minor variations. Here is my sample code- Tile[][] tiles = ...
0
votes
3answers
153 views

How to change the gravity with a click

How to change the gravity of a ball upward with a click Then change it again downward with another click And so on In unity
0
votes
0answers
50 views

Is resource management a good idea when dealing with animations?

New to the Unity environment here and I have a question concerning how to efficiently manage computer resources in a top down 2D game. I have a large area that looks like a 2d rpg from the 90's and ...
5
votes
1answer
172 views

QuadTree-based pathfinding for a volume body

I want to make a game where a player follows a mouse pointer. The game is not tile-based. I use quadtree for a collision detection and everything works fine. But now I want to develop a player ...
8
votes
3answers
465 views

Using full resolution of depth buffer for 2D rendering

I'm working on a front-to-back renderer for a 2D engine using an orthographic projection. I want to use the depth buffer to avoid overdraw. I have a 16-bit depth buffer, a camera at Z=100 looking at ...
3
votes
5answers
2k views

Trying to implement gun cooldowns in C#

My aim is to allow my player to shoot 3 bullets at a time. Between shooting these 3 bullets the player should wait a very small interval (so that they don't all get fired at the same time) - call this ...