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

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How does orbital math work?

I'm writing a 2d space game, and I want the players to be able to 'orbit' objects and other players (if they're fast enough, of course), but I'm having trouble coming up with the right way to think ...
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110 views

Faking Perspective/Depth using 3D images converted to 2D sprites - Can't work it out!

after a lot of searching/reading/viewing old school game videos I am still unable to work out how to achieve the effect I am after. I am currently working on a 2D "overhead view" sci-fi RPG, using a ...
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0answers
44 views

2D sprite making tool for huge project?

I recently bought spriter 2D but it was a disaster, it is not a finished product at all and i encountered so many bugs and crashes with it, so please don't suggest it. I am looking for a 2D sprite ...
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1answer
479 views

How to create 2D shadows and lighting?

How do I create shadows and lights in a 2D top down perspective game? I want to achieve an effect similar to this game (also made in unity) where some objects like a torch, different sprites, and the ...
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2answers
242 views

2D Coordinate Based Game [duplicate]

I want to make a game for Android that has a 10x10 Grid Plane as UI.In this game users going to touch on a grid and tihs grid will be painted. My question is how do I understand which gird or tile ...
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2answers
164 views

Determine facing direction mecanim 2d movement

I'm using this script to move my character in my 2d world: public float speed; //Movementspeed public Rigidbody2D rbody; Animator anim; void Start () { rbody = GetComponentInChildren<...
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1answer
591 views

Why do my game objects jitter when moving the camera?

I'm moving from Qt Widgets' QGraphicsScene to Qt Quick's QQuickItem for rendering my game objects. One of the things this involves is setting up a scene and the view onto that scene, as this was ...
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1answer
92 views

Find alternate shortest paths in Unity

I'm developing a game in Unity. It's a simple game where the rocket has to reach the point where the player touches on the screen. The movement of the rocket is physics based. When the rocket goes off ...
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1answer
377 views

Unity tiles with wierd border flickering when moving horizontal 2D

I recently made some Tiles using a program called Pyxel Edit to create some placeholder graphics. The problem I'm having is that when I move the camera horizontal the edge of the tiles starts to ...
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2answers
245 views

How to check if an GameObject exists in Unity2D? (Javascript)

Im making an AI that checks if the player exists or not. How do I check if a certain object exists and put it in a boolean variable?
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1answer
146 views

Pathing for 2D, sprite-based game

I'm making a 2D, oblique-styled sprite based RPG. My game does not live in a 2D matrix (like Tetris), rather it's sprites animating over a tilemap. I am trying to set pathing rules for NPCs. I've ...
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2answers
560 views

Proper way to handle Movement/Animation/AI functions of an AI character in Unity3D

My team is currently building a 2D game in Unity and we've run into some workflow/script organization blockades for many of our game's characters. For example, we're not sure what the standard method ...
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1answer
128 views

Unity: “Find” can only be called from the main thread, but moving variables to the Start() function causes other errors

#pragma strict var collided = false; var thrust: float; var pizza = GameObject.Find("pizza-small").GetComponent.<Rigidbody2D>(); function Start() { } //hand + pizza ...
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2answers
79 views

On key press, spawn a collider where my player is facing?

I'm trying to create an attack mechanic to my player hero in my 2D Tower Defense game. When I press the Q button I want my hero to do an animation and spawn a temporary collider shaped as a cone at ...
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2answers
1k views

I need an object to move towards an moving object in Unity2D (javascript)

I am trying to make an AI that tries to move towards the player but I don't know how. I tried using Vector2.MoveTowards() but it just mimics my movements instead of moving towards the player. I tried ...
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1answer
104 views

How to get a Vector2 location of an object? (Unity2D javascript)

I need to make an "AI" that makes a ball try to touch the player. But Vector2.MoveTowards()needs a Vector2 variable but how do i get the location of an object?
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1answer
41 views

How to use rigitbody2d.AddTorque() in JavaScript? (unity2D)

I just want to know how to use rigitbody2d.AddTorque() and an example script would be great :D. I am trying to rotate a cube forever using it as a test.
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2answers
461 views

Generate static 2D Tilemap from array

How do I generate a 2D tile map from an array like in this tutorial for XNA ? I basicly want to generate a static map based on my tile prefabs.
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1answer
175 views

How should I store dynamic game entities for efficient area-based selection?

In my 2d block-based game I'm trying to implement a data structure that would store entities entities in a way that's capable of: Direct selection based on coordinate. Iteration Iteration limited ...
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3answers
230 views

Pathfinding to find the route to nearest resource in 2D grid

The setting is a game in a 2D gridlike labyrinth/maze. I'm looking at pathfinding algorithms such as A* and Dijkstra. I can't figure out how to have my game characters find the nearest resources. All ...
2
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1answer
666 views

JS Canvas - Creating 2D Game lighting effect like Terraria

I just started working with canvas in HTML5 and with javascript. I'm pretty satisfied with my game so far: http://xenopal.dk/game-v1.1/. But I'd like to implement lighting as well in the style of ...
10
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1answer
313 views

How can I implement lights & shadows in a multi-layer 2d tilemap?

I am in the process of writing an isometric game from scratch, and I'd like to know how/if I can add lights and shadows. The code I have so far can be found here, but it should be enough to know that ...
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1answer
93 views

Libgdx how to add popup interaction

I am looking for someone to point me in the right direction. I am working in libgdx. I have a game where a player will approach an object on a map and then interact with it. On interaction a new ...
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0answers
136 views

How to change colors where two boxcollider2d objects intersect (Unity 5 2D)

I'm creating a 2D game in Unity that relies on combining colors. For instance, if the yellow sprite in in a position, and the player slides a magenta sprite partly over it, the area where the two ...
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1answer
64 views

Unity3D (2D) - Make sure Item Dragged Is Top Item Visually

I am using Unity 5 and making a 2D game in which many sprites will be stacked on top of each other and can then be moved by dragging. Sometimes when the users goes to drag from a pile, ones that aren'...
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1answer
110 views

How to implement angled surface?

I'am trying to implement 2D platformer game inspired by N game. But the problem is I have no idea how to implement something like this: I have two ideas of how this could be implemented but i don'...
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1answer
333 views

How To Program a fully controllable spring (Damped) motion

i'm working on a project that needs realistic 2D Animation, none linear motion you might say, i have tried many things such as Hermite Curve and a few other motions and in the end Spring Motion. ...
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1answer
173 views

XNA 2D rotation Matrix offset/origin

I'm currently struggling with finding the offset for my original camera translation after I have applied a rotation for it. transform = Matrix.CreateScale(new Vector3(1, 0.75f, 1)) ...
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2answers
89 views

Amount of Data Calculated in a Game [closed]

So... I am theorizing the development of a 2d living persistent fullsized world with simulated ecossystem, etc..., and many, many objects, but how can I handle the giant amount of data that will be ...
2
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1answer
969 views

Creating Fog Of View in 2D game with lighting method

I'm creating 2D side scrolling game with Unity, and i want to add feature where the player come into a cave, then all going dark, the player turn on the flash light, so the player can see around ( ...
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2answers
261 views

Spaceship Shield Flare

I'm trying to implement a system whereby a "shield flare" will be shown whenever a projectile impacts the shield. The shield itself is one like in Star Wars, where it's more like a skin around the ...
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3answers
222 views

2D Rendering Based On Y Coordinates

I'm trying to build an RPG worldbuilder. I have seperate classes for images. Like this. Object1::Object1(int x, int y, CSDL_Setup *sdl_set, int *p_CamX, int *p_CamY) { X_pos = x; Y_pos = y; ...
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3answers
299 views

Collision Detection/Response Issues in Unity

Sprite A: Box Collider 2D and Rigidbody 2D. Sprite B: Box Collider 2D. Both sprites have a Sprites/Default material with Pixel Snap enabled. The textures being used are set to Truecolor Format and ...
4
votes
1answer
219 views

Calculation correct position of object after collision (2d)

I have a circle, that bounces of walls. The circle is traveling at the speed defined by px/s for x and y. I have collision detection implemented and I use vectors to calculate the new x/y speed (and ...
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3answers
741 views

2D Physics friction on a moving platform?

I have a few basic platforming mechanics going on in this scene. I have a prefab platform with an animation that loops back and forth between two different x positions, but does not begin looping ...
2
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1answer
66 views

Why are my Hello World Box2D project's collisions off by twice the size of my boxes?

I've been implementing Box2D into my engine but have run into a snag. I decided to rebuild the helloworld project inside of my own engine (it is almost identical), of which I will snip here in a ...
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1answer
222 views

How to make smooth 2-d zooming in Processing

I am making a 2d game with camera zooming using Processing. Currently, my program reduces the size of each block by one. This works very well when there are only a few blocks on-screen, but not when ...
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2answers
243 views

DDS files with DirectX Tk, Some work, some don't

I am learning DirectX with the DirectX Tool Kit library and everything seems to be going smoothly but I have run in to a tiny little hiccup. I am currently trying to load DDS textures from file ...
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0answers
172 views

How to target moving object in 2D game

I am working on targeting system for 2D game. Two objects move in space. Each one have Position and Velocity vector. Ship object shoots moving objects in space. Ship can shoot in any direction, but ...
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1answer
233 views

Best way to manage weapons as GameObject on a script in Unity with C#

I have a player game-object with a script Player. In the Player script I have a public properties weapons. I want to have to just drag in this properties a script/prefabs. And the Player script must ...
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3answers
76 views

Need help with physics 2D Unity

I'm making a 2D game in Unity. Basically there's just a rocket that goes where ever the user touches. With the code that i have right now, the rocket instantly rotates towards the point and moves ...
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2answers
766 views

Vision Cone for Enemy AI in Unity 2d

I am trying to develop an Enemy AI with vision cone in unity 2d top down game, can you please suggest me some approach or sample script, so I can get an idea.
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1answer
45 views

Rotating 2D-Projectile towards mouse, hides the projectile (Maybe changes the layer)

I want to shoot towards my mouse, which is working fine now. After this was solved, I wanted to rotate the projectile, so that it's looking to the mouse. This is my code: projectile.transform.LookAt (...
2
votes
1answer
100 views

My bullet changes the velocity depending on where I click

I want to build a little 2D-Sidescrolling shooter and I'm now at the shooting script. I already figured out how to shoot a bullet towards my mouse pointer. I got something like this : Vector3 ...
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vote
3answers
397 views

Orthographic Camera settings for a 2D game

I'm starting out a 2D wrestling game in Unity 5 and i need some help. The default resolution of game needs to be 320x240. The background sprite that i would be using is 640x480. The camera would move ...
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3answers
226 views

Procedural generation of stars in the background with given random seed

I want to generate stars (actually a 2d vector) in the background. The player is moving left and right endlessly. When the player moves the stars, which aren't in sight anymore, should be deleted from ...
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2answers
215 views

How to access Collider in c# script with its tag name

I want to access a Collider in c# script file with its tag name I Tried this if (Collider2D == Physics2D.OverlapPoint(touchPos)) { Some Code to be Performed } I want to access this Collider2D ...
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1answer
207 views

2D World - How to represent my Game Objects graphically?

I want to code my own topdown 2D game with SFML+C++ that later shall have multiplayer functionality. Therefor I want to seperate the graphical and logical Parts of my game. All of my ingame Objects ...
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1answer
3k views

Change sprite to animation in unity 5 2d (c#)

I want to do the same as this older post with one change: Change the sprite of a Object in Unity I want to use a .anim animation (created with unity) after the space key is pressed instead of ...
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1answer
206 views

Isometric Terrain Editor

I am trying to make an isometric terrain editor. My problem is not to do with making isometric graphics or rendering them, rather it is to do with indexing of tiles. Let's say I'm making a hill at ...