All Questions

4
votes
4answers
4k views

Detecting collision between ball (circle) and brick(rectangle)?

Ok so this is for a small uni project. My lecturer provided me with a framework for a simple brickbreaker game. I am currently trying to overcome to problem of detecting a collision between the two ...
1
vote
1answer
35 views

Custom 3D Noise function incorrectly generating in Lua

I have been working on a custom noise generator (not Perlin on Simplex or whatever), which works fine in two dimensional space, but upon converting it into three dimensional space, it turns into a ...
1
vote
1answer
521 views

What should I use for the event name when logging metrics with Flurry?

I'm working on a multiplayer game and I want to use Flurry to record game events. In the game you can build, grow and train troops. In Flurry you can log an event (optionally with parameters). It ...
0
votes
1answer
36 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 ...
0
votes
1answer
78 views

Decentralized Matchmaking in Unity?

I'm making a card-playing game, similar to Magic Workstation. I've been looking into several options for networking. I have a working LAN version with the build in Unity networking, as well as Photon ...
0
votes
1answer
77 views

Mesa: Howto enable OpenGL 3.x functionality via extensions?

How can I enable OpenGL 3.x functionality via extensions? I'm new to OpenGL development under Linux. Currently I have: #define GL_GLEXT_PROTOTYPES #include <GL/osmesa.h> #include ...
0
votes
1answer
46 views

Batching and object's transformation

I'm trying to implement batching in my game (Sprite batching and 3D Mesh batching), I've read a lot of documentation about that but I don't understand something: When each object have is own ...
0
votes
1answer
397 views

How do I determine the look-at vector of a free-look camera?

I'm trying to create a free-look camera with DirectX 10. I've figured out how to get the directions for forward and back and left to right. However, I don't know how to rotate the look-at vector of ...
0
votes
1answer
715 views

How to attach a sprite to a TMXTiledMap at a particular coordinate, in AndEngine?

I am trying to add a sprite at a "grid" location on the tiled map. The TMX tiled Map is like a grid, and you can access the size of the grid by calling mTMXtiledMap.getTileRows() and ...
1
vote
0answers
78 views

Unpacking UE4 .pak's?

Is there any way to properly unpack/repack resources of UDK-based games (.pak files)? . From what I've tried already, gildor.org's viewer seems to skip/ignore these .pak's (also, UDK, which is UE3 ...
1
vote
0answers
31 views

Weird blending behavior on PowerVR SGX544MP2

On PowerVR SGX544MP2, sometimes blending behaves in a very strange way for me. Instead of blending with the actual color from the previous draw calls, it tries to blend with black: (sorry about the ...
1
vote
0answers
21 views

Android OpenGLES, getting number of fragments passed depth test/Occlusion Query?

Afeter reading many blogs and searching on Internet, I did not get any sloution for getting number of fragments/pixels which are occludded or not occludded of the object on OpenGL ES3.0 Android ...
1
vote
0answers
97 views

Collision detection implementation suggestions

I'm working on a simple 2D game involving a rotating octagonal ring where a sphere sprite moves up/down avoiding objects as the ring rotates faster and faster. I'm having a difficult time with the ...
1
vote
0answers
88 views

OpenGL - Texture disappears

I'm making a simple program with C++, SDL and GLEW. So far it is going great but I ran into a weird problem. One of my four textures would not show up on screen even though it used the same code as ...
1
vote
0answers
29 views

LibgGDX drawing two seperate Textures in FrameBuffer

So I am trying to combine multiple TextureRegions in to one by using a FrameBuffer. This works extremely well when the TextureRegions originate from the same Texture object/file but as soon as I try ...
1
vote
0answers
60 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 ...
1
vote
0answers
53 views

How to apply physics when you have sub frame state changes?

I'm currently calculating my physics every 1/100th of a second and using a state machine to manage the current state of the player. In my main loop I'm checking user input and transitioning the state ...
1
vote
0answers
56 views

Starcraft 2 Editor: I want to make two players share their income

I have a scenario where there are 4 teams vs. a raging Zerg horde constantly attacking them. The idea was allow that player 1 & player 2 in the same team share their income, so that one player ...
1
vote
0answers
128 views

Is it reasonable to use a 2D texture as a lookup table in GLSL

I need a lookup table in a shader. The input values would be color values and the output other color values. Something like: uniform float lut[256]; color = vec3(lut[int(color.r*255.)], ...
1
vote
0answers
34 views

Implementing debug “overlay” info

This question is actually about GameEngine2D which is part of PSM SDK (for PlayStation Vita development), however as stated in documentation it's loosely based on cocos2d library. I hope that my ...
1
vote
0answers
77 views

How to use an A* Pathfinding System across uneven environments?

I am developing a game in Unity3D. I want an enemy character to follow the player around. The problem is, my surface is uneven and full of mountains. I am using aarongranberg's pathfinding project. ...
1
vote
0answers
46 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 ...
1
vote
0answers
59 views

libGdx Window .pack() not working

I'm trying to make a window, then use the pack method to get the right size, but the window maximizes instead. Here's my code: private Table buildOptionsWindowLayer() { winOptions = new ...
1
vote
0answers
91 views

Unity Animator State Freezing

I am really new with Unity, I am making a game, but I am having some problems with the animators, my problem is that I am trying to add some animations to my menu, and also add new characters to my ...
1
vote
0answers
136 views

How to implement efficient Fog of War?

I've asked a question how to implement Fog Of War(FOW) with shaders. Well I've got this working. I use the vertex color to identify the alpha of a single vertex. I guess the most of you know what the ...
1
vote
0answers
33 views

Algorithms for positioning rectangles evenly spaced with unknown connecting lines

I'm new to game development, but I'm trying to figure out a good algorithm for positioning rectangles (of any width and height) in a given surface area, and connecting them with any variation of ...
1
vote
0answers
52 views

LibGDX: Why look BitmapFont pixelated on a scene2d.ui.Dialog?

When I use BitmapFonts directly on the stage table, the fonts looks normal (not pixelated). But when I use the same BitmapFont with the same size on a scene2d.ui.Dialog, the font looks pixelated. ...
1
vote
0answers
49 views

Multi Pass Blend

I am seeking the simplest working example of a two pass HLSL pixel shader. It can do anything really, but the main idea is to perform "ping ponging" to take the output of the first pass and then send ...
1
vote
0answers
168 views

Ease Rotate RigidBody2D toward arbitrary angle

I'm trying to make a rigidbody2D circle return to an orientation after a collision. But there is a weird behavior I do not expect - it always orients to the same direction. This is what I call in ...
1
vote
0answers
45 views

HLSL: An array of textures and sampler states

The shader must switch between multiple textures depending on the Alpha value of the original texture for each pixel. Now this would word fine if I didn't have to worry about SamplerStates. I have ...
1
vote
0answers
93 views

2d libgdx: runtime level generation

I have encountered a problem during my first game development: I thought of a Array<Ground> groundArray that does groundArray.add when a new ground will appear on the screen, and removes oldest ...
1
vote
0answers
45 views

XNA HLSL UV Mapping

I was testing my hlsl lighting shader, I've copied it from a tutorial and it works perfectly, but all the meshes in the model needs to have texture coordinate, I guess this is because this part: ...
1
vote
0answers
229 views

Send Message: Object Not Found

I am trying to call a method within a Unity app from an Android activity by using UnityPlayer.UnitySendMessage. I am getting the error "SendMessage: (ObjectName) not found!". I've confirmed the ...
1
vote
0answers
116 views

implementing shadows into my 2D GLSL-based lighting system

I'm writing a lighting system in OPENGL using GLSL shaders, and I'm pretty happy with the light casting I have so far, but I'm totally stuck on casting shadows. Everything I've found online on this ...
1
vote
0answers
53 views

Pygame's sprite.collide_circle() missing several frames of head-on collision

I've spent hours trying to figure why my collision detection was so crappy, with sprites visibly ovellaping for several frames, when I noticed the culprit could be pygame's detection callback ...
1
vote
0answers
56 views

OpenGL seems to be getting its colour from the wrong array on some machines

I have a OpenSceneGraph application which displays a 2D mesh and allows the user to make selections on triangles and vertices and colour them. If you aren't familiar with OpenSceneGraph, it's basiclly ...
1
vote
0answers
89 views

How to change texture from pvr.ccz in Cocos2d?

I'm using .pvr.ccz file that texturePacker application created for me , I created a Sprite that it's image choosed from this file(.pvr.ccz) like below: CCSprite *mySprite = ...
1
vote
0answers
92 views

unity3d-Find angle between 3 vector3 points obtained from swipe

I was trying to find the angle between 3 vector3 points obtained from the screen swipe. The first vector3 point is the first touch position fp, the second is some intermediate touch ip and the third, ...
1
vote
0answers
60 views

Realtime local reflections of particle system

I'm finding my way around CryEngine 3 (through Steam) and want to create a simple effect where a fire on shore is reflected in a body of water. For testing purposes, I've made the water dead calm... ...
1
vote
0answers
36 views

How to tell if a fixture is being squeezed by two other fixtures in Box2D?

Let's say I had a ground fixture, a player box, and a kinematic block moving up and down. If the player stands under the block, weird things happen. I want to simply play an event where the player ...
1
vote
0answers
95 views

Why AnchorPoint doesn't affect `CCLayer` Positioning?

I think there is a difference between CCLayer and CCNode behavior when I change their AnchorPoint. I will describe what I mean and please somebody explain it ? Scenario: I start with CCNode CCNode ...
1
vote
0answers
34 views

PhysX - Revolute joint around unit vector

I'm using a right-handed coordinate system with (0,0,-1) = forward, (1,0,0) = right and (0,1,0) = up. PhysX version is 3.3.0. I have a unit vector which represents the axis around which my actor is ...
1
vote
0answers
79 views

Particle Effects Start Glitching out

My particle effects have gone crazy look: In my game, bombs drop on castle and then explode For the first few second of my game the particle effects for the explosion works. The particle effects ...
1
vote
0answers
97 views

LibGdx Triangle Collision

I'm back with another question. I'm trying to get a collision between an actor and a sprite. With the actor, which only moves upwards and downwards, I've got no problem since it's shape is a ...
0
votes
0answers
6 views

Importing skeletal animation from obj in maya

I have different frames of a human skeleton in .obj format. I want to import the animation from these keyframes into maya to perform motion retargeting. Please help me get some direction in this. ...
0
votes
0answers
33 views

How to get rid of half pixel artifacts?

I've been having a bit of trouble using OpenGL to make 2D games. I am using a traditional ortho perspective with just some sprites being rendered and moved around. It all works perfectly but there is ...
0
votes
0answers
10 views

How to make an object in box2d have constant velocity even after collision?

I have iOS game where I have a bouncing character. Everything is being handled by box2d. The problem is when the character hits a wall of another character it's velocity changes, but I don't want ...
0
votes
0answers
19 views

mouse-controlled third person camera

I have a simple camera that always stays a set distance behind and above the player. Mouse-on-screen coordinates are used to do Pitch and Yaw, and the keyboard is used to roll. I get how to position ...
0
votes
0answers
11 views

Processing.js for loop not executing all the way

I'm trying to add elements to an ArrayList (in Processing.js, basically a javascript array) in a for loop. BEcause of the many objects I need to add, the for loop is not incrementing all the way ...
0
votes
0answers
28 views

Method Animator.SetBool sometimes is not working (or not triggering) in Unity2D

I have trouble with Animator in Unity2d. I have a main character for my game. The character has his own animation clip for fighting. When the player touches the screen, i am starting animation. When ...

15 30 50 per page