The central code loop responsible for handling the running gameplay. At its most basic state, it accepts input, resolves the actions of entities, and renders the scene.

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2
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1answer
410 views

How to wisely update body trajectories in a 3D space simulation game?

Suppose I have a Spacecraft object in 3D space, controllable by the player. I want it to update its own trajectory, so I give it a function for that (actually it might be inside a controller component ...
1
vote
2answers
734 views

Game Loop: Should resources be initialized in the game loop or in the respective classes? (both?)

For example, lets say we have an enemy class in my Android game project. I am initializing the enemy bitmap to be used with certain sprites in my game loops init. I am then calling the respective ...
6
votes
3answers
1k views

What are “frame rate” and “fps?”

Can someone give me a detailed explanation about frame rate and fps concepts?
4
votes
2answers
277 views

How to store the state of the world for a fixed time step?

Most of the posts on fixed time steps say something like this: State previous; State current; while ( !quit ) { double newTime = time(); double frameTime = newTime - currentTime; if ( ...
4
votes
3answers
447 views

Synchronise graphics and logic code

I have a procedural approach to the game loop that runs various classes. it looks like this: continue any in progress animations check for used input apply AI move things resolve events such as ...
15
votes
2answers
2k views

Where should collision detection logic be placed?

I am developing a small 2D game engine. The characters have a paint method which currently does the following: Calculate the new position of the character as per its speed, etc. Update the collision ...
0
votes
2answers
680 views

Console Text game: Vertical Scroller collision problems

Alright so i'm making a vertical side scroller where you are an '8' character traveling downward while avoiding my randomly generated walls (the "generation" function) on the left and right sides of ...
4
votes
5answers
623 views

Flash Game not working on Android

I am not sure if I will be able to provide enough information for someone to answer this question, but any ideas might help. I am creating a tower defense game in Flash and I eventually want to make ...
-1
votes
3answers
2k views

C++ GameState management

I have been attempting to make a game engine in C++ and have come across the dilemma of game state management. I have done a lot of research and found numerous ways of accomplishing from game engine ...
5
votes
2answers
341 views

Draw and update order in 3d graphics

In all of the code samples that I have looked at, the game loop looks something like this: while(true) { InputAndUpdate(); Draw(); SwapBuffers(); } However doesn't this destroy ...
11
votes
2answers
5k views

Semi-fixed or Fully-fixed timestep?

I am making an iphone shmup and am trying to decide what type of game loop to use. I want to use either semi-fixed timestep or fully-fixed timestep. With semi-fixed timestep I will make zero or more ...
4
votes
2answers
218 views

JS: Should I have an upper limit to the number of update cycles per sec?

I'm making a javascript game engine for fun and one thing I noticed was that my laptop runs super hot with the simplest game mechanics and that my game is doing about 600 updates per second. The ...
3
votes
1answer
577 views

How to handle input from user

I am making an iphone opengl es 1.0 game. I am using a fixed timestep with interpolation on the end. One thread only. I am using CADisplayLink to fire the game loop. First question: is it okay to use ...
1
vote
2answers
833 views

Flash Custom Events

I am working on a Flash Tower Defense game. I have a main game loop which is an eventListener for each frame. Whenever you gain money or lose a life, I want the GameUI to be updated to display this ...
12
votes
4answers
2k views

Programming the combat sequence in a role playing game

I'm trying to write a short "game" where a player goes around and fights monsters but I have no idea how to handle the combat. For example, say I have a "Warrior" and a "Troll". How do the two fight ...
1
vote
1answer
2k views

C++ OpenGL Game Timer [duplicate]

Possible Duplicate: Tips for writing the main game loop? I am attempting to make a game using OpenGL and C++ but i haven't been able to find any good tutorials..or anything that could ...
4
votes
1answer
721 views

XNA GameTime before first Update

Using XNA, is it possible to access the GameTime object before Update is called for the first time? Can it be used in the game constructor, Initialize or LoadContent methods?
2
votes
1answer
545 views

Do game programming just let all the objects in the program to interact with themselves and what about preventing infinite loop?

Does game programming use the method of 1) using time as the main controller to let objects interact with each other, so each step, let 1 object send messages to N objects, and the second object to ...
5
votes
2answers
1k views

Correct order of operations in a platformer game loop

I've run into an issue with my Mega Man engine, and the structure of my game loop is making it very difficult to fix. With Rush Jet, or any falling platform, Mega Man needs to stay attached to the ...
5
votes
2answers
5k views

Constant game speed independent of variable FPS in OpenGL with GLUT?

I've been reading Koen Witters detailed article about different game loop solutions but I'm having some problems implementing the last one with GLUT, which is the recommended one. After reading a ...
15
votes
3answers
4k views

Finite state machine in C++

So, I've read a lot about using FSMs to do game state management, things like what an FSM is, and using a stack or set of states for building one. I've gone through all that. But I'm stuck at writing ...
3
votes
1answer
225 views

iPhone 3GS - can't ever seem to hold 60fps with CADisplayLink

So I've switched from NSTimer to CADisplayLink and I'm still seeing unexpected variation in my frame counter - it fluctuates between 59-60fps, even when I'm not rendering much. Has anyone else seen ...
21
votes
2answers
15k views

A good way to build a game loop in OpenGL

I'm currently beginning to learn OpenGL at school, and I've started making a simple game the other day (on my own, not for school). I'm using freeglut, and am building it in C, so for my game loop I ...
1
vote
1answer
607 views

Tetris Movement - Implementation

I'm developing a Tetris clone and working on the input at the moment. When I was prototyping, movement was triggered by releasing a directional key. However, in most Tetris games I've played the ...
17
votes
5answers
1k views

Game actions that take multiple frames to complete

I've never really done much game programming before, pretty straightforward question. Imagine I'm building a Tetris game, with the main loop looking something like this. for every frame handle ...
12
votes
2answers
3k views

“Optimal” game loop for 2D side-scroller

Is it possible to describe an "optimal" (in terms of performance) layout for a 2D side-scroller's game loop? In this context the "game loop" takes user input, updates the states of game objects and ...
3
votes
2answers
504 views

WinAPI window taking 50% of CPU when idle

I'm currently working on a game that creates a window using WindowsAPI. However, at the moment the process is taking up 50% of my CPU. All I am doing is creating the window and looping using the ...
3
votes
2answers
671 views

Designing the Update system (read very basic game engine) for an XNA game

I am trying to determine the best way to implement the "update" system or engine for a simple XNA game. Description of situation I have a few classes, lets call them Player [will be an ...
5
votes
2answers
3k views

How should I structure my menu / game loop?

I'm trying to decide on how to structure my main game loop - every example I've seen of the game loop looks a bit like this: while (true) { UpdateGame(); DrawGame(); } i.e. it ignores the ...
3
votes
1answer
2k views

Handling game states for Android

Currently developing a game for Android. I went through a tutorial to get sprites, loop, etc. up and running, and it all works fine. The way it is currently set up is that Main creates a canvas, the ...
4
votes
3answers
1k views

Deal with mini states in game

Hi :) I want to ask what is the best way to deal with "mini-states" in game? For example I making game like Simcity, i can build buildings, roads, rails, or I can change something in economy. I am ...