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

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2
votes
1answer
247 views

What is wrong with my 2D orbit calculation?

I am working on a 2D game, and I am working on adding some space physics, so I need to find a way to create a circular orbit. I want to make my game object move on a circular way around a planet. I'm ...
1
vote
1answer
372 views

Unity 2D: Sprites/Diffuse is making my character weird, like an antialias

i'm trying to put light and shadows on my 2D character but when i set the material on it to Sprites/Diffuse, it's kinda putting a strange smooth on my pixels. Without diffuse: With diffuse: And ...
2
votes
1answer
48 views

Java Libgdx: How do you add cells to a TiledMap?

I'm trying to make a Side-Scrolling game that will allow you to place/remove tiles. I'm using the TileMap Editor to render the custom Tilemap but is there any way to add tiles? I have it where I can ...
0
votes
1answer
51 views

Any way to visualize how will game objects look on different screens?

After completing my game and sending it to a bunch of friends with different devices, they complained about how some game buttons were too small. (I have developped a touchscreen game but after ...
0
votes
1answer
129 views

Unity 2D: Change one instanced prefab then make all the others on the scene like it

I want to get this thing working: I have a prefab with coins, some obstacles and enemies, and i want it to be instantiated each time the player got to the right or left on the stage, to make the stage ...
0
votes
2answers
153 views

Is it possible to use one if statement for each level scene?

I'm working on a platform game where you as a player have to collect logs, to keep on all the fires in the level. Each campfire has a timer, which ensures that every x number of seconds the animation ...
0
votes
1answer
140 views

How to modify the Unity sprite renderer (or create a custom one) that can display the sprites on the X-Z plane?

Prefix: I am NOT trying to rotate a sprite 90 degrees by it's transform, this changes what is up/down and forward/backwards for the object. I need the sprite displayed on the X-Z plane in comparison ...
1
vote
0answers
55 views

2D Polygon Collision push direction with large polygons

I have a collision detection/resolution implementation that uses the Separating Axis Theorem. Detection and such works perfectly fine, as well as resolution for most objects/shapes in my game. ...
0
votes
0answers
109 views

Creating a 2D game on the X-Z plane instead of the X-Y plane in Unity, any adverse effects or challenges with this?

After coming to the realization that some things I wish to do in a 2D RTS are easier to do on the X-Z plane instead of the default X-Y plane, I'm considering moving my game over to the other plane. ...
1
vote
2answers
81 views

How can I detect a perfect passageway for collision detection?

The problem is when I move diagonal it moves fractions of units and therefore my coordinates might be a fraction of a unit say (40,400) might be actually (40.12,400.40) but another problem is my pink ...
0
votes
1answer
72 views

2d Collision detection response equation doesn't work

I am currently doing some game engine programming as a hobby. I have been working on getting the collision detection working for a while now, and I'm at my wits end with it. I started with this ...
0
votes
1answer
64 views

Why is each column being shifted down the X value of the column in my 2D Data Structure?

I have a two 2-dimensional arrays. One of which stores characters from a text file, and the other stores pointers to instances of Blocks. For some reason, in either of the arrays (I'm not sure which), ...
0
votes
2answers
271 views

How to bounce the player away after attack by enemies?

I creating a 2d platform game. I would like to bounce the player away after hit by the enemy, so the user get another feedback beside the sound effect. How can I achieve my wish? Use the following ...
0
votes
1answer
220 views

Unity C# 2D Platformer Main Camera should stop on sides of level

I've been working on a 2D Platformer and i succeeded in setting up a script for my Main Camera to follow my Player gameobject using transform positions. Now when my character is near the sides (or ...
0
votes
0answers
19 views

C# Pathfinding in 2d array (procedural generation) [duplicate]

I have the following random example data in a 2d array 030 300 030 003 The 3 represents a room, the 0 represents its an empty block and 1 represents a corridor. Now i want for example the following ...
-2
votes
2answers
198 views

In Unity, how do I make the camera follow a character?

When my character moves, I want the camera to follow them, such that the character always stays in the middle of the view. How do I do that in Unity? Here's my code right now: using UnityEngine; ...
1
vote
1answer
79 views

How to change an int value in the Unity editor

The player of my game can collect logs and can use them for hold on the fires. Each fire has its own status. So one is off and the other one is for 50% on. I created a public int inside my script ...
1
vote
1answer
75 views

Move 2d tank with independently controlled treads

I have made a tank object that knows its position, speed, rotation, and a double value ranging from 1.0 to -1.0 for each tread. I want it to move base on those values. For example, if the value for ...
0
votes
1answer
213 views

Unity problems with OnTriggerStay and Input.GetKeyDown

Background information Some weeks ago, I start by creating my own platform game. You control a character, that can collect logs and should hold all the campfires on in the game. When the user has ...
0
votes
1answer
137 views

How to detect the edge of a platform?

I have create a enemy AI script. These enemies are animals in my game. What I want is that the enemy can detect the edges of a platform. using UnityEngine; using System.Collections; public class ...
0
votes
1answer
179 views

Rotate Object Towards Direction in 2D

For my RTS game's physics engine, I'm trying to find out a clever way to make a unit face the direction it's moving in. Given a Vector2d direction of movement (its normalized velocity), how can I ...
0
votes
1answer
136 views

Sorting sprite's layers in isometric view

I'm making a strategy game with isometric view and I'm having some problems with deciding which sprite should be drawn first (I'm using SFML 2.2 as graphic library). I'm using std::sort to sort ...
0
votes
1answer
188 views

Using collectable items to change a gameobject Unity

I’ve been working on a 2D platform side scroller. I’m rather new to Unity and C#. Basically what I’ve achieved so far is a character which can collect Logs throughout the game and those logs are ...
3
votes
2answers
139 views

Can I use the HD Graphics 3000's quad list primitive type via D3D?

I was studying some technical documentation on the Intel HD Graphics 3000 GPU, which I'm using as a lower-end reference for my 2D game engine. I noticed the hardware supports a nice "Quad List" ...
1
vote
1answer
82 views

(Java) Trying to animate an arraylist of coins with a (working) animation class

I have a coin class which takes in an integer numOfCoinsand an enum LayoutType, which can be linear or curved. A linear layout displays the coins in a straight line one after the other - we'll work ...
1
vote
1answer
318 views

How to create a ladder script in Unity [closed]

I tried to create a climb script and found some similar code. I would like to climb with my player on a ladder. I came up with the following: bool canClimb = false; float speed = 1; GameObject ...
1
vote
1answer
2k views

Unity - Basic AI Enemy Follows Player - Prevent Flocking Of Enemies Together

I'm in the process of implementing a 2D top-down shooter game. I have a basic AI script that allows enemies to follow the player around. Currently it works fine for one enemy, but as soon as there are ...
1
vote
2answers
6k views

How to add a UI Text for keeping Score in Unity 5

My Problem is simple I want to show scores on my game. The examples on internet are good but in Unity 5 there are no GUI elements but instead these are now UI elements. I was following this example: ...
-1
votes
1answer
303 views

How to attach 2D object to a rope?

I was wondering, how I can attach a game object (player) to another object (a rope) when both came in contact in Unity. I think it should be done with a OnTriggerEnter2D, but doesn't know how I should ...
1
vote
3answers
122 views

Calculate intersect point / aim point

I'm working on a simple game, and I need to calculate the position to aim. Since my math days are a bit behind me, I put together a simple example to illustrate: So given that I know the position ...
0
votes
2answers
264 views

onCollisionEnter2D not behaving as expected

I have two game objects. They both have a Rigid Body 2D and a Box Collider 2D components. One of them also has script component. Below is the full script using UnityEngine; using System.Collections; ...
1
vote
1answer
228 views

Does game engines (like Unreal, Unity, Crafty) add value compared to pure js frameworks (react, ember..) for my isometric tile-based games [closed]

I'd like to create a huge tile-based board (say 100K tile). The game does not have any advanced graphics (you don't see the players or landscapes), the main difficulty is that it has 100K tiles to ...
0
votes
0answers
36 views

Collision Detection acting weird

I started learning programming in java. and I've decided to make a simple game but, got a problem in collision detection. The problem here is that the collision detection is sometimes not working. ...
0
votes
0answers
28 views

Efficient point-in test on static Polygons

I have some convex 2D polygons that are static and I would like to create an efficient point in test for them. I'm pretty new to this area of study so I just want to make sure I haven't made an error ...
0
votes
1answer
113 views

Player position on second player connection

I'm having some trouble trying to run my game for the multiplayer part. I'm creating a 2d game. I have followed this tutorial : ...
1
vote
1answer
105 views

Position and rotate a 2D point array into a 3D world

I have a set of 2D points (defining a flat 2D 'connect the dots' shape). I want to calculate the 3D positions for these 2D points at a specific 3D position and rotation. For example, say I have five ...
2
votes
2answers
159 views

Algorithm that always returns the same pseudorandom output if given the same input of seed, x and y?

I've been trying to find an algorithm that will take in an x value, a y value, and a seed value and then spit out a number between 0 and 255 (or an int that I can cut up into bytes). I want to be able ...
0
votes
1answer
80 views

Math for 2d movement with max speed?

I need some help with math in a 2d environment. I have a joystick that controls the acceleration vetor for the player figure. Its suppose to look like the ground is slippery which makes the figure ...
0
votes
1answer
177 views

My Raycast will not detect collisions in my Unity 2D project. What am I doing wrong?

I appreciate any help you can offer me. I created a script for a character controller that casts two rays below the player's gameobject. The rays extend infinitely and should collide with another ...
0
votes
0answers
43 views

Are there conventional 2D isometric axis directions?

I'm making a 2D isometric game, but now that I gotta decide which direction X and Y increase, I think it would be best to consider the common practice. In which directions do each of the axes usually ...
0
votes
0answers
47 views

How to use Android Sensor, only in x axis

I have seen some tutorials but they are very complicated and they are about the three axes (x,y,z). So I want a code that moves an object or more (for example) to the right or the left when the ...
2
votes
3answers
195 views

How to select random points within grid meeting min/max distance requirements from each other?

I have a 2D grid map that is relatively large. I'd like to pick some semi-random points all over it (say N points). The rule I want to ensure here, though, is that any selected points are at least M ...
0
votes
0answers
18 views

2D smooth Rotation Unexpected

I am trying to get a smooth 2D rotation and this semi works but only in (-x, +y) I have tried using a lerp but I still get the same result. So I believe, it has something to do with the rot_z value ...
1
vote
1answer
232 views

How To calculate camera boundaries

Is it possible to calculate the exact camera bounds? By this I mean the white lines that represent the camera area e.g the lines in the picture: I'm using Camera.main.screenToWolrdCoordinates to ...
3
votes
1answer
184 views

How do I make my main character move towards an object? LibGDX/Java

What I want to happen is for my player to bounce from spring to another. For example take the illustration below: Here's my code (what I've tried to do so far). This gets called in an ...
0
votes
2answers
190 views

Space invader barrier implementation algorithm

I've been struggling with implementing the space invader bullet to barriers. I wanted right now to blast a circle around, when the bullet hits the barrier and modifies the circle. As shown in the ...
0
votes
0answers
21 views

How to get camera to follow player, but stop when reaching end of screen? [duplicate]

I'm making a 2D game in Unity and I'm having issues with the camera. I need the camera to stay within the boundaries of the level (the background sprite), but then follow the player around the level. ...
1
vote
3answers
651 views

Collision between AABB and Circle

I'm programming collision systems for a 2D game engine. The idea is that different systems can interact with each other. So one of the cases would be check collisions between axis aligned bounding box ...
1
vote
1answer
252 views

Creating a 2d look sprite sheet and textures out of 3d models [duplicate]

I'm trying to make a 2d game (rpg top down), and I've got no 2d artists help me out making 2d characters and textures, but I have one who can make 3d stuff (using Blender and 3d Max), I was wondering ...
1
vote
1answer
63 views

LibGDX/Java - Trying to find the vector from one object to another

I want to add springs in my game that work like the ones in sonic - i.e. if you can't get over an obstacle you have to hit a spring which sends the main character flying towards another spring that ...