C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.

learn more… | top users | synonyms

0
votes
1answer
138 views

Trying to implement Camera

I'm trying to implement a Camera class in order to walk and look on the world as follow: #ifndef _CAMERA_H_ #define _CAMERA_H_ #include <glm\glm.hpp> class Camera { public: Camera(); ...
1
vote
1answer
110 views

Handling creation of entities on level creation

I'm currently working on a 2d physics based plat former, kinda in the style of super meat boy. In super meat boy, you have multiple levels and I want a similar sort of thing but is there a general way ...
4
votes
1answer
269 views

Game Programming Gems series still of value? [closed]

Former Nintendo dev Mark DeLoura wrote a series of books called "Game Programming Gems". (http://www.satori.org/game-programming-gems/) Do these books still contain valuable concepts, considering ...
0
votes
1answer
54 views

differences betwen game resolution in a different display resolution

my game is not supported on the other devices with a different resolutions. for example may character is 140w X 55h pixels which is ok on a 4 inch display but it goes wide when i tested my game on a ...
0
votes
0answers
111 views

Directx9 engine Z-buffer problem with d3dimage

I am trying to integrate my Direct9 engine into my new WPF application via D3DImage. Everything is working except for the Z buffer. With the AutoDepthStencil at FALSE I can render my meshes but the ...
1
vote
1answer
69 views

How to to convert UV coordinates to texel coordinates and how to convert texel coordinates to “array coordinates”?

I am currently writing a UV texture mapper. But i don't know how to convert UV coordinates to texel coordinates. And i also have no idea how i should convert texel coordinates to "array ...
0
votes
0answers
153 views

2D AABB vs AABB side of collision and collision depth

I realize there have been a multitude of questions involving 2D AABB vs AABB collision, but the questions and responses always avoid the simple questions that make it difficult. To keep things ...
6
votes
2answers
174 views

Decoupling assets, instances and the rendering module [closed]

I am trying to redesign a home-grown hobby engine. It became apparent that it was far too tightly coupled and so I'm trying to redesign it in a more modular way. Unfortunately, I'm baffled by the ...
1
vote
1answer
102 views

How to rotate an object so that it is aligned with a vector?

I have the following Scenario: Two moving objects (A and B in the picture) need to appear "connected" by a third one (C in the picture). I set the position of the connecting object C as "halfway" ...
2
votes
3answers
104 views

Hero made of parts 2d rotation

I have a problem with rotation of my hero in 2D space. The hero is made of body parts such as: head, arms etc. Every part is a separate sprite. When I want to rotate the hero, I have to rotate all ...
1
vote
1answer
95 views

Space invaders implementation

I'm just wondering about the implementing of the collision response of bullets and the fours obstacles. https://www.youtube.com/watch?v=LCNTwG3MGEg When a bullet hit, a one black pixel is ...
1
vote
2answers
136 views

Collision detection between triangle and polygon

I have some difficulties to understand how to be sure if there is a collision between a space ship (black) and an asteroid (in blue). A space ship is placed on a case and an asteroid comes from the ...
1
vote
1answer
581 views

How can I get a reference to a object in the world in UE4?

I'm coding a simple maze game in UE4 and I have everything I wanted to implement done except having an obstacle in the scene. What I have is a simple Obstacle class which is a child of an Actor class. ...
2
votes
1answer
85 views

change animations when touch sprites [closed]

In the following function I want to change the animation when I touch on the button. But the game crash and exit. What's wrong with this code ? bool GameScene::onTouchBegan(cocos2d::Touch *touch ...
1
vote
1answer
83 views

Using GetTickCount (to shoot missiles) [closed]

I have some difficulties to understand how to correctly use GetTickCount() as I have some problems in my little game. I have to place on a case a space ship. This one will shoot with a certain ...
0
votes
1answer
90 views

c++ - collision detection/resolution clipping

I'm trying to implement a collision detection system, and it is working for the most part, no overlapping (or at most very little overlapping) of characters, and wall collisions. The problem is that i ...
4
votes
3answers
217 views

How to handle multiple events in SDL2 and C++?

I'm working on an entity component based game and I ran into this problem. I've got a component called PlayerControlComponent: void PlayerControlComponent::HandleInput() { SDL_Event event; ...
3
votes
1answer
130 views

Why is my DX9 render target restricted to 512×512?

When I use a render target higher in resolution than 512×512, I receive an image with black borders, depending on how big this texture was. Why is this? How can I fix it? Here's how I create the ...
4
votes
2answers
423 views

Is there an alternative to VBOs or deprecated functions to draw many small quads?

I was thinking about how to program a user interface in a 3D game. The problem is, immediate mode (glBegin and glEnd) is deprecated for a long time but I don't think vertex buffer objects (or arrays) ...
4
votes
2answers
338 views

Stroring components in arrays (entity component system)

I'm looking for ways to improve my ECS and I've seen many people suggest storing components in arrays. This seems great, considering fast access for a component using entity id and more importantly, ...
2
votes
2answers
162 views

How to get a component from an Entity?

In my Entity class I've got a function that returns a specific component, that looks like this: template<typename ComponentType> ComponentType* GetComponent() { for(unsigned int i = 0; i ...
0
votes
2answers
66 views

Undefined reference error when trying to access a component using ECS [closed]

I'm trying to access the x and y values from PositionComponent in my MovementComponent but I get this error and I just can't figure out why I get this. in my Entity class I've got a function ...
0
votes
0answers
8 views

Fill color in moving object without flickering [duplicate]

Here is my code in which moon is moving around earth but now i want to fill moon and earth with color and also want to remove flickering in the moon while moving. Please help me, i will be very ...
1
vote
1answer
65 views

How can I stop my collision detection from registering multiple times per frame?

I am working on a side-scroller shooter right now. Everything is working fine along with the collision detection however, my problem is that the collision triggers my health deduction code multiple ...
1
vote
1answer
208 views

Firing bullets with a time interval between them [duplicate]

How can I make my enemies shoot bullets in intervals? I already have the enemy shooting bullets, however my problem is that it shoots the next bullet instantly, making it look like a line instead of ...
0
votes
3answers
82 views

Logic level representation that distinguishes “<<under>> and <<above>> the bridge”

I have an logic level/map representation for a 3D game that uses vector<Area> where: class Area{ vector<Point2D> bounding; //determines the shape of the Area, its borders ...
1
vote
1answer
214 views

AABB swept collision response with voxel world

I followed this tutorial: link and I was able to make it work with 3d voxel world collisions. But the problem I have is with collision response. I want to make player slide against the wall if he is ...
0
votes
1answer
117 views

Rectangle collision in SDL2 partially allowing sliding C++ [closed]

I am working on a game in SDL2, in which the player needs to be able to slide along walls, but NOT go through them. I've read up on things like Quadtrees, and this stackoverflow question ...
2
votes
1answer
99 views

Where should I put the SDL_Renderer* using the ECS with SDL2 and C++?

So I'm still learning about ECS (Entity Component System) and whenever I'm thinking about the architecture and actual implementation, I just can't figure out where should I put the SDL_Renderer*. So ...
4
votes
1answer
444 views

C++ OpenGL ShadowMap Issue/Artifacts

I am currently implementing basic shadow mapping in my C++ Custom Engine using GLSL 4.10. It is currently working with basic PCF anti-aliasing and very minimal reduction for unwanted artifacts. Here ...
1
vote
4answers
160 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: The blue line delimits the tiles which the soldier can reach using a single action. We also are ...
0
votes
0answers
98 views

OpenGL Occlusion Culling - flickering problems

I have implemented occlusion culling in my app and I think why the problem is happening but I am not sure how to solve it. My scene is divided in different chunks (voxels) and I am rendering each ...
0
votes
1answer
146 views

Directx: HLSL Texture based height map. (Shader 5.0)

I'm trying to implement a GPU based height map the simplest (and fastest) way that I know how. I passed a (.png, D3DX11CreateShaderResourceViewFromFile()) texture into the shader, and I'm attempting ...
3
votes
2answers
142 views

Intersection between moving circle and some squares

I'm developing a 2D game made of squares. What I need to do is check if a circle collides with any of the squares as it moves. I have a raycast function to check the same idea, but using a point. I ...
0
votes
1answer
151 views

Triangle-Triangle Intersection Code

Does anyone have experience implementing this triangle-triangle intersection code that I found online? I don't understand it. I made a post on Stack Overflow about this and got the advice that: ...
3
votes
3answers
145 views

Sound Synthesis from object collision in Virtual Reality Environment

I have a project whose subject is "Sound Synthesis from object collision in Virtual Reality Environment" First of all, I have to define some objects with certain attributes (like shape, mass, ...
0
votes
1answer
194 views

How to compute matrix transform local/world on OpenGL

I'm developing an OpenGL program where each object / entity contains m_WorldPosition, m_WorldOrientation, m_WorldScale and m_WorldTransform (Vector3, Quaternion, Vector3 and Matrix4f). The problem is ...
1
vote
2answers
119 views

How to avoid checking the same triangle twice in collision detection with spatial hashing

I'm implementing a spatial hashing system to speed up my collision detection, but I've run into a problem. Since a triangle can be hashed into multiple buckets, how do I ensure that I don't check the ...
3
votes
1answer
189 views

Is std::deque the best option for storing my graphics objects?

I am currently implementing an object buffer, which stores all the objects used in the game at one place. All other components of the game, like the user interface, the level loader, etc, add objects ...
1
vote
1answer
392 views

2D graphic over 3D perspective projection

To draw a 2D HUD (just a simple trianlge, for now) over 3D graphics in OpenGL I : draw all 3D objects, then call glDisable(GL_DEPTH_TEST) before drawing 2D HUD draw 2D triangle call ...
1
vote
1answer
173 views

c++ RPG - Handling buffs / equipment stats [duplicate]

I'm trying to develop a character calculator for a RPG, and it could evolve into a turn based combat / text based RPG. One of my concerns is how to handle the equipment stats / buff system. ...
1
vote
2answers
123 views

DirectX Quaternion SLERP Wrong Answer?

I have some code that looks like this: DirectX::XMVECTOR a, b, c; a = DirectX::XMQuaternionIdentity(); b = DirectX::XMQuaternionRotationAxis(DirectX::XMVectorSet(0.0f, 1.0f, 0.0f, 0.0f), 3.1415f); c ...
-1
votes
1answer
114 views

How to move object along circumference of another object? [closed]

I have following piece of code, now i want to move the "moon" object in the orbit around "earth". please help!! #include <stdio.h> #include <conio.h> #include <graphics.h> #include ...
0
votes
2answers
55 views

Overload how an object instance of a class is treated when used

So I've made this struct that encapsulates a glm::vec4. This is because vec3s are treated as 16-byte in GLSL, but I don't want to assign a vec4 if I only really need 3 components. Anyway, my question ...
1
vote
0answers
42 views

SDL_Mixer .xm file loop not working correctly [closed]

I am working on a little game in my spare time using C++ and SDL and I have encountered a problem with a .xm file playback. The music is supposed to have an intro of a couple patterns and then ...
0
votes
0answers
125 views

Trying to bounce a box with a plane using bullet physics

I'm trying to simulate a box that bounces with a plane and I'm beginner with bullet physics. I created a plane (box) and and a box that is falling. The problem is the ball is stalled while colliding ...
0
votes
0answers
133 views

Update DirectX 11 Texture Created in Unity Asynchronously in the Native (c++) Plugin

Sorry for the long question :D tl;dr version :) Is it possible to update DirectX 11 textures created in Unity asynchronously in a native plugin (C++)? I've written a plugin that retrieves data from ...
1
vote
1answer
73 views

How can I fix user input for this pong paddle?

I have been having trouble with my pong paddle - It responds to user input as if it was typing. Sometimes, people try to react to KeyPressed events directly to implement smooth movement. Doing so ...
1
vote
2answers
96 views

Dynamic Flow Control in HLSL with Array References

I'm trying to do lighting calculations for an array of point lights in HLSL. I simply want to pass light direction vectors from the vertex shader to the pixel shader. Here is sample code: static ...
0
votes
1answer
84 views

My texture blends into one single color (DirectX11)

First thread on gamedev stackexchange. I am currently creating a cube with a single texture on each side. I got my cube up and running. But when I apply my texture, I get this: It blends the ...