A set of rules that govern an in-game experience. Game design is an effort to come up with game mechanics that allow for players to have a fun and engaging experience.

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46
votes
7answers
12k views

What's a way to implement a flexible buff/debuff system?

Overview: Lots of games with RPG-like statistics allow for character "buffs", ranging from simple "Deal 25% extra damage" to more complicated things like "Deal 15 damage back to attackers when hit." ...
90
votes
12answers
59k views

How to develop RPG Damage Formulas?

I'm developing a classical 2d RPG (in a similar vein to final fantasy) and I was wondering if anyone had some advice on how to do damage formulas/links to resources/examples? I'll explain my current ...
8
votes
3answers
13k views

Moving from A(x,y) to B(x1,y1) with constant speed?

I currently have something like: float deltaX = point0.getX() - point1.getX(); float deltaY = point0.getY() - point1.getY(); And every 0.01 seconds I refresh my objects position like this: object....
8
votes
2answers
6k views

Interaction between engine parts

I want to ask a question about how the information exchange between game engine parts should be implemented. The engine is separated in four parts: logic, data, UI, graphics. In the beginning I made ...
-1
votes
2answers
342 views

What is a Game Engine? [duplicate]

I am new to Game Development, All I have developed is some 2d Games, using Game Maker by YoYo Games. There game development is much more easy, just as simple as Drag and Drop. But, Now I wish to ...
12
votes
1answer
2k views

Programming a climbing system like tomb raider

I was wondering if anyone knew or had knowledge of how to program a climbing system like the one found in tomb raider/uncharted. I had thought of just having bounding boxes at all the climbable ...
102
votes
9answers
6k views

What makes a computer opponent feel alive?

Are there any recommended blogs or whitepapers that talk about making the AI in an RPG game feel more real? (Specifically in turn based combat.) I know something must be out there, but I am only ...
29
votes
2answers
5k views

How do I make a character capable of walking on walls?

I am trying to get a character to move like a spider: Given a rising slope which a ball would normally not be able to roll up, the spider would slowly crawl up. Similarly, given a mid-air rectangular ...
21
votes
4answers
4k views

“The Game Object” - and component-based design

I've been working on some hobby projects the last 3-4 years. Just simple 2d and 3d games. But lately I have started a bigger project. Soo in the last couple of months I've been trying to design a game ...
10
votes
3answers
4k views

How to implement buffs / debuffs / temporary stat changes in an RPG? [duplicate]

Possible Duplicate: What’s a way to implement a flexible buff/debuff system? In the context of creating an engine for a RPG I want to implement a generic way to give effects / buffs / debuffs ...
7
votes
2answers
3k views

What do you use to support multiplayer turn-based network game for iOS and Android games?

If I'm doing a turn-based card game, what kind of technique do you use to support multiplayer gameplay over Internet? Is it socket? If it's socket, which SDK (CoronaSDK etc.) can provide solid ...
10
votes
2answers
851 views

Showing range on hexagonal grid

Here is the situation. I have hexagonal board,and a unit on it,with speed or move value 4.Diffrent terrain has a diffrent cost.When i click on the unit,game should show me a move range. My solution ...
8
votes
3answers
1k views

Designing AI in a 1 on 1 battle similar to Pokemon

I am designing a game where the battle system is similar to Pokemon. That is, a 1 on 1 battle with only a few (4-6) moves to choose from. As the game is taking shape, I'm starting to think about some ...
5
votes
2answers
4k views

How to make a scrolling background

I'm making a Shooter game like "1943" and "Jamestown". I am Using Visual Basic 2010. I was wondering how I would make the background scroll up to simulate moving forward. I would also like it to ...
6
votes
2answers
3k views

Bubble shooter search alghoritm

So I have a Matrix of NxM. At a given position (for ex. [2][5]) I have a value which represents a color. If there is nothing at that point the value is -1. What I need to do is after I add a new point,...
4
votes
1answer
466 views

Verify which bubble is connected to top using DFS

I am working on a bubble shooter game in this game i have implemented searching using DFS as suggested in this link, and this is working fine. Update Here is my code for DFS -(void)callDfs:(int)...
1
vote
1answer
77 views

How can I assist players navigating narrow grid junctions?

I'm looking for a technique to help the player navigate a narrow path while the character is in constant motion. When changing direction in junctions, it's pretty hard to time the direction change for ...
8
votes
1answer
1k views

How To Approach 360 Degree Snake

I've recently gotten into XNA and must say I love it. As sort of a hello world game I decided to create the classic game "Snake". The 90 degree version was very simple and easy to implement. But as I ...
2
votes
2answers
690 views

How do I write a wave-spawning system for a shoot-em-up?

I recently played Knightmare Tower and was amazed by the way how different monsters are beign spawned. I'm aware of time-based and count-based spawing systems in shoot-em-ups. Count-based systems ...
36
votes
7answers
16k views

How does pathfinding in RTS games work?

[crossposted from stackoverflow] In a game such as Warcraft 3 or Age of Empires, the ways that an AI opponent can move about the map seem almost limitless. The maps are huge and the position of other ...
19
votes
4answers
12k views

A list of game mechanics

I'm trying to compile a list of game mechanics, by which I mean high-level/meta game mechanics like Cooperation, Resource Management, Chance and Time Manipulation rather than low level mechanics like ...
15
votes
3answers
1k views

Peer-to-peer hostless competitive games of chance? [closed]

I'm wondering - have any games been ever created that are: peer-to-peer without one peer being designated as host competitive (not cooperative, players play against one another) provably fair (there ...
26
votes
20answers
3k views

Are there many games involving the manipulation of water?

I'm in the very, very early brainstorming stages of a game which centers around the manipulation of water and the terrain around it. (i.e., changing the water's state between solid, liquid, gas; ...
8
votes
1answer
3k views

Using L-Systems to procedurally generate cities

I'm currently making an app that focuses a lot on procedurally generated content. So far, I've successfully implemented the procedural generation of the terrain and shape of a map using simplex noise. ...
27
votes
8answers
2k views

In-Game Tutorial Decisions

I'm working on a game with confusing mechanics such as energy storage and the coolant temperature. What is the best way to get a new player learned quickly? What are the pros and cons of different in-...
20
votes
5answers
4k views

Spreadsheets in Game Design?

There have been two instances from the past two weeks that I've heard from well known successful game developers that they use spreadsheets when designing games. The first being David Whatley in ...
19
votes
4answers
5k views

Best strategy (tried and tested) for using Box2D in a real-time multiplayer game? [duplicate]

I am currently tackling real-time multiplayer physics updates for a game engine I am writing. My question is how best to use Box2D for networked physics. If I run the simulation on the server, should ...
11
votes
6answers
5k views

How do I ensure an appropriate payout ratio for a slot machine?

I have done a lot of research into random number generators for slot machines, reel stop calculations and how to physically give the user a good chance on winning. What I can't figure out is how to ...
19
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
4answers
20k views

Logic behind a bejeweled-like game

In a prototype I am doing, there is a minigame similar to bejeweled. Using a grid that is a 2d array (int[,]) how can I go about know when the user formed a match? I only care about horizontally and ...
11
votes
4answers
22k views

2D character controller in unity (trying to get old-school platformers back)

This days I'm trying to create a 2D character controller with unity (using phisics). I'm fairly new to physic engines and it is really hard to get the control feel I'm looking for. I would be really ...
1
vote
1answer
660 views

Random Placement of Objects on a Tilemap

I have read many topics on random world generation on this site and others, and I roughly understand most of it. What I can't see is how to randomly place objects on the generated tile map I get. Say ...
0
votes
5answers
2k views

Collision detection logic

Edit 2 In the following picture sprite1 (the red square) is hitting the platform from the left, so: sprite1_rightEdge>platformSprite leftEdge would be true, so I can simply reposition ...
14
votes
2answers
11k views

Word list for use in commercial game [closed]

I need a word list to use in a commercial game (even though the game will be free to download) Something like this http://www.puzzlers.org/pub/wordlists/ospd.txt Would be perfect (needs to be ...
9
votes
3answers
561 views

How to add a sound that an enemy AI can hear?

Given: a 2D top down game Tiles are stored just in a 2D array Every tile has a property - dampen (so bricks might be -50db, air might be -1) From this I want to add it so a sound is generated at ...
6
votes
1answer
251 views

Orbital mechanics: orbit as a function of time. Universal variable formulation?

I am trying to model a two dimensional orbit for a two body Kepler problem but have gotten stuck when introducing the time variable. For a satellite with known semi major axis (a), eccentricity (e), ...
5
votes
2answers
144 views

Decoupling input from game states / entity behavior

I'm looking for a way or general best practice advices for decoupling the architecture of my game, in the example below the input from the current game state workflow / entity behavior. While I'm all ...
4
votes
1answer
522 views

Path finding in games

I am writing my term paper about Path finding algorithms in games, and i've got a couple of questions, hopefully you people could help me out with those ;) So, i've done a little bit of searching ...
6
votes
2answers
175 views

RPG Factions - Friendly/Hostile check

I'm having some trouble checking if one faction is hostile to another faction in my RPG. I'm using enums for my factions and relations but I feel like there's a better way to approach this. Currently ...
11
votes
2answers
580 views

How do I make good guy attacks only hit bad guys and vice versa?

My game has many different type of good guys and many different type of bad guys. They will all be firing projectiles at each other but I don't want any accidental collateral damage to occur for ...
8
votes
3answers
489 views

Intellectual rights to game concepts

For a client I might be making a small puzzle game about getting a item out of a puzzle. The concept will strongly resemble this game : http://www.alibaba.com/product-gs/355972089/...
6
votes
1answer
852 views

Spaceship interiors: How to approach, implementation-wise?

I'm creating a 3D space game using Ogre3D for graphics with C++ and one of the features is to be able to freely wander around spaceship interiors, but I am lost with how to implement it. Here is what ...
4
votes
3answers
2k views

Bubble shooter falling algorithm

To complete this question about the same color search algorithm, I would like to know if someone knows which is the best implementation for making other bubbles fall when they are no longer attached. ...
4
votes
1answer
972 views

Implementing Wall Jumping

I've read this wall jumping question but I'm having trouble implementing it. I've gotten as far as implementing a timer that controls when wall jumping is possible. Right now, if I go up against a ...
3
votes
1answer
1k views

360+ degree rotation skips back to 0 degrees when using Math.Atan2(y, x)

I'm new to XNA and this is my first actual project, so forgive my noobness. I'm using jointAngle = System.Math.Atan2(RightStick.Y, RightStick.X); in order to set an angle of a joint (farseer) so ...
2
votes
1answer
406 views

Move Sprite from A(x,y) to B(x1,y1);

I have a sprite with an UpdateHandler that can change it's position every 0.1 seconds. My Question is , given the Sprites current position, how can I move it to another position(like from 10,10 to ...
7
votes
2answers
1k views

android multitouch problem

Im aware that there a a couple of posts on this matter, but Ive tried all of them and none of them gets rid of my problem. Im starting to get close to the end of my game so I bought a cabel to try it ...
3
votes
1answer
808 views

How can I spawn monsters at random locations?

I made a little 2D shooter game for my iPhone. I want monsters to spawn at random locations. But I don't have any clue where to start to make them spawn. I already made the monster image and ...
1
vote
2answers
253 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, ...
0
votes
1answer
23 views

Object orbitting 2D circle java

I'm using this code to make a square that orbits a circle . When i use it however the rect(); is quite far away from the circumference of the circle, i would like to make it closer. All variables are ...