Flat two-dimensional space. Positions represented with `x`, `y` coordinates.

learn more… | top users | synonyms

1
vote
0answers
89 views

Why does my texture-based object picking detect the wrong object? [closed]

I am a LibGDX beginner implementing a RISK-like game. I want to let the player select territories by clicking on them, but for some reason, the wrong territory is sometimes detected. The clicked ...
1
vote
1answer
415 views

Beginner: How do I calculate a vector?

I am trying to wrap my head around some concepts in a side project I'm working on. I'm struggling with how I can calculate a vector based on my character movement logic. Here are the relevant details ...
3
votes
5answers
393 views

Is it bad practise to have an object for every tile?

In the game I am working on, many of my tiles must have special attributes (such as triggers when the player steps on them). I was wondering if it would be bad practise to create an object for every ...
1
vote
1answer
89 views

Design question: best way to model and visualize a long grid of data [closed]

Perhaps some noob questions for a scientific application that you can assist with: I am trying to render a large, evenly spaced grid of data in 2D. The full data set dimensions could be anywhere from ...
0
votes
2answers
285 views

Why does my A* implementation overflow the stack?

I'm fairly new to game dev and working on my first ever attempt at 2D pathfinding. I'm using the A* algorithm as detailed here. For the most part, it seems to be working correctly and as intended. ...
1
vote
1answer
186 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
189 views

2D animated sprite jumping and gravity physics [duplicate]

I'm currently writing a Megaman clone for my school project. So far all I did was making the character run and stay put when needed. Know I want to be able to make him jump using the 'X' button. I ...
1
vote
1answer
147 views

Is it Possible to create one equipment piece, and handle the manipulation programatically

I have a 2D game made in XNA-4.0. I am brainstorming on how to implement a system of equipment where I can draw one Texture, and rotate/scale it to my character's current animation without haveing to ...
2
votes
2answers
224 views

How to deform 2D tileable texture in XNA/MonoGame

I'm looking for a way to deform tillable texture in a 2D game I'm building using MonoGame but I'm not sure how this effect is called and searching the internet for "deforming textures" gives me mostly ...
1
vote
3answers
104 views

Handle many objects to draw in XNA

in my 2D engine - using XNA 4.0 - I´ve an issue with handling many objects. The way my engine works is that I only draw visible sprites (base objects) and ignore those sprites out of the current ...
0
votes
1answer
106 views

Trigger an event when a game object touches a non-solid game object

For a 2d game, I are currently making an AI and I want it to jump when it touches a invisible cube, which isn't solid, how do I do this?
4
votes
2answers
1k views

How to design a drag and drop inventory system with transition from icons to game objects?

I’m trying to write a simple 2D game in Unity with an inventory where the user can drag and drop different objects on the screen. I need the inventory to contain icons which on drag will become ...
1
vote
1answer
288 views

Animation-based Collision Boxes

Background I'm currently working on a top-down 2D game, roughly similar to something like Zelda for the SNES. Certain game entities such as the player or a typical enemy will consist of multiple ...
2
votes
1answer
577 views

Unity 2D detect if swipe goes through an object [closed]

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 ...
1
vote
1answer
204 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
votes
1answer
286 views

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

There are sprites, with certain pixels being bright pink, and a shader dyes these pink or grayscale pixels to a custom color determined by the player. For example, a character looks normal except for ...
0
votes
1answer
111 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 ...
4
votes
4answers
1k 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 ...
0
votes
2answers
431 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 ...
1
vote
2answers
621 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 ...
2
votes
2answers
216 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 ...
0
votes
0answers
93 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
0answers
48 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 ...
1
vote
0answers
515 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 ...
4
votes
2answers
878 views

How to properly do top-down aRPG melee attacks? [duplicate]

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 ...
2
votes
4answers
333 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 ...
7
votes
2answers
7k 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 ...
2
votes
1answer
251 views

What is the 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 ...
0
votes
0answers
285 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 ...
0
votes
0answers
172 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 ...
0
votes
1answer
128 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 ...
2
votes
3answers
191 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 ...
6
votes
1answer
1k 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
0answers
90 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
votes
1answer
64 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
4answers
216 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 ...
0
votes
0answers
68 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 ...
3
votes
3answers
916 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 ...
0
votes
1answer
447 views

How do I rotate and flip 2D sprites stored in a 1D array of pixels?

I am using a 1D array of pixels for rendering in 2D in java. I am interested in rotation (in radians) and mirroring across the x and y axes. The desired result looks something like this: Public void ...
5
votes
1answer
192 views

How do I letterbox a C#/Monogame viewport within a resizeable window?

I am making a 2d game with xna/monogame. I want the main view area to always show 15x15 tiles, or 480x480px. I've got something that sort of works, following this guide. It expands the view range ...
0
votes
2answers
1k views

Unity Physics Material - Character Slides Too Much

I am currently working on a 2D platformer in Unity. I am using a prefab from the AssetStore for my character (The last paragraph contains a link to the prefab). The character has a circle collider for ...
0
votes
0answers
59 views

Unable to slice an image

I'm new to game development. I am trying to get two sprites from a single image. After selecting the image I change sprite mode to "multiple" and go to sprite editor. There in preview I draw ...
0
votes
1answer
254 views

Incosistent jump, stuttering

I've written this C# code to handle movement in my testing project. The game is supposed to be 2D, some kind of a platformer, just to get me started with Unity. However, it seems there's something odd ...
2
votes
1answer
159 views

Wall-sliding Collision Response Only Works On One Axis (2D)

"sprite" is the player object, velocity is a Vec2 that tracks movement (is set to -1, 1, or 0 at any given time), each sprite in "sprites" is a wall of the same size as the player (everyone is a block ...
0
votes
0answers
47 views

2D Game with a big block-based Map - Create for each block one block-object? [duplicate]

I'm working on a 2D game in Java which will be similar to Terraria (Mincecraft 2D). I want to generae the world-map random. The world (the ground) consists of 32x32 blocks. How I should handle all ...
8
votes
2answers
254 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 ...
0
votes
1answer
68 views

How does Texture2D.GetData return coloured pixels?

I'm trying to work out how the pixels are stored in the returned array but I'm not having a lot of luck (and thus my calculations don't seem to be working). I realize that the pixels are stored in ...
1
vote
0answers
83 views

How to make a text of several letters animate, only with an animation

I wonder if it is possible to create an animation in a text with a single "animation". The problem is that for me to reach the desired effect I need to create an animation for each letter, as each one ...
0
votes
0answers
51 views

Text within a gameObject boundries

I am working in a little project and I want to show text within a rectangle. for that I use a sprite(rectangle) and a child that contains a TextMesh as component. The text change during runtime, and ...
0
votes
1answer
244 views

Creating a top-down spaceship

I'm creating a top-down 2D space game in LIBGDX for android. When spaceship is going forward it will look like this: when it goes upward I want to change it's direction with a nice animation so it ...