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Java Game how to make image follow line?

Hello I have a game where circles rotate around the centre of the frame. When I click on two circles a line is drawn between the two circles. The circles are always moving and so is the line. I have ...
user2279603's user avatar
1 vote
4 answers
4k views

How to get the closest "visible" object from my "player"?

I'm using Unity 3d and i have to accomplish the following task: get the closest "visible" object to my player in forward direction. It is a sort of radar. I don't know where to start. Any advice ...
stighy's user avatar
  • 417
1 vote
1 answer
8k views

Unity2d: orthographic camera and z-axis?

I wonder if anyone can help with an explanation of the z-axis and using unity with 2D with an orthographic camera. Up until now i have only been modifying the x and y values of game objects, thinking ...
Martin's user avatar
  • 111
1 vote
1 answer
69 views

Error rendering map android

I'm trying to read this text file and render the corresponding tiles on the screen. The code for reading the map is as follows: ...
Macharia's user avatar
1 vote
1 answer
3k views

How can I draw many objects on screen instead of just one?

Like many beginner graphics programmers I followed a tutorial which showed me how to set up buffer descriptions and fill out the vertex buffer etc... - the steps involved in drawing a simple indexed ...
Dollarslice's user avatar
  • 3,410
1 vote
0 answers
132 views

Cell height with heightmap for collision detection

Hello everyone I'm programming a game with c++ and openGL. My world is generated from a heightmap (100x100 matrix with values 0-255) and now I need a function that returns the actual height based on ...
ScazzoMatto's user avatar
1 vote
2 answers
2k views

Update function only running once

For some reason, the update function is only running once. Why does this happen? ...
DubGamer87's user avatar
1 vote
4 answers
949 views

How to order points on a 3D grid such that we can connect them in a line loop correctly

I want to recreate an effect as close as possible to X-Com: Enemy Unkown's movement range feedback: (source: gameinformer.com) The blue line delimits the tiles which the soldier can reach using a ...
Iker Gimenez's user avatar
1 vote
2 answers
2k views

Stop rendering hidden objects libgdx

I currently am hiding objects that are not in the frustums view. However, some objects are still being rendered that are in the frustums view, but are hidden. My goal is to not render objects that won'...
JediBurrell's user avatar
1 vote
2 answers
185 views

Unity2D - Save everything in a scene before loading another and come back to it?

So I have am into this endless runner thing where everything is generated randomly from prefabs. Okay cool! But I am currently working on a bonus collectible which takes the player to another scene. ...
Hardik's user avatar
  • 43
1 vote
1 answer
1k views

Unity Mathf.Atan2 algorithm complexity

using Unity5.5.1f; using C#; So I have a circle (2D) divided equally by 16 directions, and I also have a direction V which is different from the other 16. In order to know which direction is the ...
Alakanu's user avatar
  • 705
1 vote
2 answers
2k views

Swap buttons in layout

Say I have 4 buttons. I want to have button 2 always swap out with another button, randomly. So, when the user taps button 2, it should swap with another button (randomly). Now, ...
Ruchir Baronia's user avatar
1 vote
2 answers
4k views

Design Pattern for card game objects

In my game, I will have more than 100 types of cards, and before the actual game, player can select 6 of them and will be shown as 6 buttons on the scene. The card have its own ID, card name, and a 3D ...
brian661's user avatar
  • 201
1 vote
1 answer
6k views

How to create scrolling input text field using Unity UI

How to create scrolling input textfield using UI in Unity 4.6.6 problems in my project are 1.Cursor is not masking 2.Scrollbar size is automatically become 0 to 1 size 3.Scrollbar is not working ...
Liju Thomas's user avatar
1 vote
0 answers
394 views

How to iterate over 25 Sprite Objects (Unity 5 - C#)

I wanna show a minimap on the screen. The minimap would look like this (bottom right corner, this was done time ago in Visual Studio): Have two problems with that, I have 25 Image objects created in ...
user avatar
1 vote
1 answer
209 views

Unity2D: Frost Effect Time scale

I downloaded this package ("Frost Effect by Steven Craeynest") on Unity Asset Store and altered it into making the effect happen once I click on a button (button 1), I first disabled the frost button (...
Jessca Stone's user avatar
1 vote
1 answer
612 views

AI and EntitySystem

I'm using an Entity-Component System and have an AI System that acts on certain entities (agents) within the system. My question is: how should the AI system interact with the world and the agents? I'...
Max's user avatar
  • 306
1 vote
1 answer
291 views

How to understand kind of matrix/world from implemented math operations?

i'm a newbie in 3d programming, and i approach for the first time this argument. I try to make some changes to an existing 3d object viewer, to better suite my needs. This object viewer is jsc3d. I ...
deblocker's user avatar
  • 113
1 vote
1 answer
176 views

Why my game is running slowly if it was launched from a wpf application?

i have some issues why my GameEditor. I would start my XNA project from it, like a debug-client. It opens and all works fine, but it runs on 45 frames until I hide the wpf form. then the framerate ...
EnemyArea's user avatar
  • 118
1 vote
0 answers
242 views

Moving the rendered object/the projection perspectives based on an AR marker

I saw this video and now I am trying to making it. I have used Vuforia AR Camera Pulgin, and so far tracked the image on a marker but the problem is getting the four projections of the 3D object on a ...
honey's user avatar
  • 43
1 vote
1 answer
3k views

How does one make both movement and animation to sync up and happen simultaneously?

I am very new to Unity and game making and would appreciate if you would cope with me. I have made a very basic prototype of character animation and movement, however trigger that is supposed to fire ...
Matas Vaitkevicius's user avatar
1 vote
1 answer
3k views

Unity ball not bouncing off wall correctly

I have been making a brick breaker game in Unity in 2D as my first game. I have got the ball bouncing off the paddle correctly and can bounce it of the paddle at different angles. However, when the ...
R-4's user avatar
  • 13
1 vote
1 answer
1k views

How can I implement "cut outs" for lighting in OpenGL?

So, I'm working with OpenGL (I'm not exactly sure of the version), and I want to do an old-style lighting setup by essentially drawing a black rectangle over the screen, and drawing white circles over ...
SolarLune's user avatar
  • 141
1 vote
1 answer
866 views

LOVE Physics - Breaking Joint Chains (LUA / Box2D)

Wasn't sure whether to post here or on SO so please move if needed. I've been having a look into the box2D physics API provided by LOVE to try and create a swinging flail or weighted rope but I'm ...
user3510227's user avatar
1 vote
2 answers
1k views

Procedural terrain generation in cylindrical (2D) world

I'm fairly new to procedural terrain generation. I know that to generate terrain you would use different calculations with the x and y axis (also z if you have one). But what if you want to generated ...
Matthias Schreiber's user avatar
1 vote
1 answer
2k views

XNA 4.0 - Mixing 3D and 2D - SpriteBatch putting weird alpha texture over whole scene

I am working on a game in XNA 4.0 that has been entirely in 3D so far but now I want to incorporate a HUD. I have tried doing a simple test using spriteBatch as such: ...
user319256's user avatar
1 vote
2 answers
3k views

How should I implement card effects in a card game?

I've been trying to program a video game adaptation of the popular trading card game "Magic: The Gathering". If you've played MTG before, you'll know most cards have an effect, which is activated at a ...
Xander Storme's user avatar
1 vote
2 answers
993 views

Why doesn't Unity keep keydown states between scenes, and how can I change that?

So basically, when my scene in Unity changes and I'm holding down, say, Right or Left, when the scene resets, my player (and Unity) doesn't even recognize that I'm still holding that button, until I ...
user avatar
1 vote
0 answers
2k views

Unity IAP through Google Play is forgotten after a day without internet connection

I am trying to make a NonConsumable IAP purchase persist without internet connection. I have implemented the IAP system from Unity 5.6 through Google Play for a NonConsumable item and it is working. ...
Tartle Wizard's user avatar
1 vote
1 answer
3k views

Throwing a grabbed object

I'm trying to throw the carried object in the direction of the first person controller, but unable to make it. I could make the carried object drop, but the same time i need to instantiate velocity to ...
Salar Muhammad's user avatar
1 vote
2 answers
949 views

How would I check the range against the entirety of an enemy object, and not just it's transform.position?

I want to be able to do range checks against the entirety of an enemy object, and not just it's transform.position. The enemy object can have it's side or nose within range, but range detection will ...
Douglas Gaskell's user avatar
1 vote
1 answer
426 views

Am I allowed to release a fan-made version of a Trading Card Game on a fansite? [duplicate]

Consider a Trading Card Game that is currently available for play in digital format only, the game in question would be HEX: Shards of Fate, but this question is intended as a general question about ...
skiwi's user avatar
  • 133
1 vote
1 answer
93 views

onClickListeners not working correctly (conflicting)

In my pause dialog, the exit is working correctly, but the resume isn't, if I press resume 3 times, the third time it's going to exit. ...
Lynob's user avatar
  • 381
1 vote
0 answers
484 views

Cocos2d-x: Differences between applying shader to child node and entire scene?

I'm beginning with shader. I wonder what if i apply shader for single node, what'll happen? The gl_FragCoord = (0.5,0.5) is the bottom left of the screen or the ...
TomSawyer's user avatar
  • 243
1 vote
1 answer
212 views

Different screen sizes?

I have looked through all of the android docs and many stack overflow questions, and I have a question on supporting multiple screen sizes. If I have some drawables, I know I need to put them in ...
NullPointerException's user avatar
1 vote
3 answers
431 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 of ...
Sarke's user avatar
  • 131
1 vote
2 answers
3k views

Create a body of an irregular 2D sprite in Farseer

I'm trying to create a body of a irregular 2D sprite Farseer 3.3.1. The regular shapes that BodyFactory provides are not that I want. Is there a way that one can ...
Yousuf Tafhim's user avatar
1 vote
2 answers
6k views

locking a rotation on an axis(yaw/pitch/roll) based on a parental transform

I am currently attempting to lock a non rigid body transform rotation around on an axis. It is parented to a gameobject that is rotating in 3D space. I want the Original transform to have the same ...
fryBender's user avatar
  • 152
1 vote
0 answers
130 views

Aron Granbergs Unity Pathfinding AI goes back and forth

The agent goes back and forth after calculating the path with seeker.StartPath (transform.position,target.transform.position, OnPathComplete);. The gizmo shows the ...
zeiteisen's user avatar
  • 131
1 vote
2 answers
3k views

XNA advanced rotation 3D

I'm able to rotate any model with any angle I want, where I can not rotate my model around a given point. e.g: My model rotates from the origin assigned in its .fpx file. I want it to rotate related ...
icaptan's user avatar
  • 175
1 vote
2 answers
841 views

How to create old-school format music with small file sizes

My friend and I have been working on a project recently, and because we are hard coding everything (other than the graphics library, Pygame), the total size for our project is super small. I feel like ...
Nick Jarvis's user avatar
1 vote
1 answer
2k views

How do you convert angle with velocity to x velocity and y velocity?

This question can be simplified to: If you lean a pencil of a certain length at a certain angle what is the x and y position of the tip? So, basically, I am making a game that plots a balls path ...
Ronan Dalton's user avatar
1 vote
5 answers
3k views

Why would a game developer choose Direct3D instead of something with more cross-platform support?

Why would a game developer choose to use Direct3D (D3D), instead of using something with more cross-platform support, like the Vulkan or OpenGL APIs? I know the hardware is actually rendering.
user96759's user avatar
1 vote
2 answers
103 views

Updating bots/AI behavior after a fixed elapsed timestamp in game loop?

I am developing a HTML5 game in javascript. Now I have created a few bots and they should be able to change their orientation after a few seconds/a fixed timestamp in the game loop. Suppose my game ...
newguy's user avatar
  • 255
1 vote
2 answers
375 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 ...
CodeCamper's user avatar
1 vote
1 answer
500 views

XNA game publishing help with incompatibilities via content built at runtime

MY XNA game is finally complete, but I'm having difficulty getting it to run on other Windows computers. I've read similar other stackexchange topics here, here, and here, but I'm still gonna need ...
DrZ214's user avatar
  • 348
1 vote
3 answers
10k views

How to import or "using" a custom class in Unity script?

I have downloaded the JSONObject plugin for parsing JSON in Unity but when I use it in a script I get an error indicating JSONObject cannot be found. My question is how do I use a custom object class ...
Bobbake4's user avatar
  • 315
1 vote
2 answers
314 views

How do I determine if I'm allowed to use an asset from the web in my game?

I need to incorporate other people's work into my game project. I must admit (with a little embarassment) that I am almost completely ignorant about copyright. I only have a vague idea of what it is, ...
Riccardo Vailati's user avatar
1 vote
2 answers
386 views

How do i calc what side the ball is of the rect?

I have this nice drawing: http://bildr.no/view/1085283 I know the ball's center and the rectangle's center, but how do I know (programming C#) what side of the rectangle the ball is? By my drawing, ...
Jason94's user avatar
  • 465
1 vote
2 answers
554 views

How to get the result of random item with different possibility? [duplicate]

I'm wondering if anyone can guide me with following problem... Each fruit has different chance to be called out. Apple - 80% Orange - 10% Banana - 10% Each time ...
Devyn's user avatar
  • 223

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