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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2
votes
2answers
425 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 ...
0
votes
1answer
103 views

watching for changes in object state

I'd like to know what others do to watch for changes in object states while the game is running. Say you have an object and that object has a timer. The timer completes. What is the best way to know ...
5
votes
1answer
194 views

Scaling a game world both for realism and for mechanics

I am currently working on a turn-based 4X game, and one of the things I quickly ran into was a question of scaling. On one hand, I want things like realistic sizes (having some idea of what each tile ...
8
votes
2answers
688 views

How to synchronize actions like jump in multiplayer?

I am a newbie game developer and I have been researching about multiplayer games. I observed that there's always some latency, the players always get updates from past actions. But there are ...
0
votes
1answer
2k views

Android Bitmap: Collision Detecting

I am writing an Android game right now and I would need some help in the collision of the Pawns on screen. I figured I could run a for loop on the Player class with all Pawn objects on the screen ...
-1
votes
1answer
248 views

Human to Monster Morph on 2D graphics [closed]

A friend and I are writing a topdown RPG called NecroMonster. In the game when you defeat an enemy you can take its shape (basically morph into it) and we dont know how to make this look right. First ...
1
vote
1answer
1k views

libgdx: how to manage entity classes [closed]

Good day sirs, I know this is a newbie question but I really need to ask it. I've been reading a lot of sample codes on libgdx, and I have seen entities(player, enemy, boss,etc.). my question is what ...
1
vote
0answers
90 views

Text-based game based on progress, lottery, collecting and achievement dynamics [closed]

I'm playing with an idea for a game I want to develop for a text-only, turn-based environment (think instant messenger). The game will be driven by the progress, lottery, collecting and achievement ...
5
votes
3answers
244 views

Serialization of objects problem

i have a problem with serialization (saving and loading game variabiles), when i save evreything seems to be saving correctly but when i try to load it only detects first 3 objects i saved and the ...
3
votes
2answers
394 views

Should I use delta time (elapsed time between frames)?

Unfortunately I cannot recall where but I definitely read it somewhere, that the use of delta time should be avoided for some reason. Is there really a scenario where controlling animation or other ...
-3
votes
1answer
120 views

Undefined fireball movement behavior

Demonstration video I try to do after the player shoot 10 times of fireball, then delete all the fireball objects and recreate a 10 new set of fireball objects. I did it but there is a weird bug ...
10
votes
2answers
542 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 ...
2
votes
2answers
312 views

About making damage between units

I am making my own Tower Defence game engine. I havent built one before and I don't know lot of stuff how games work. I will take Starcraft as an example. You have a marine shooting a zergling from ...
3
votes
1answer
210 views

Algorithm for optimal control on space ship using accelerometer input data

Does someone have a good algorithm for controlling a space ship in a vertical shooter game using acceleration data? I have done a simple algorithm, but works very badly. I save an initial ...
0
votes
2answers
110 views

Java game: jumping glitch on multiple collisions

I need help with checking for intersections in a game I'm creating. When a character collides with a single obstacle on the screen everything works as intended, but when multiple obstacles are added ...
4
votes
1answer
433 views

Making a game “resize-safe”

It's one thing to get the graphics aligned perfectly, it's another to do this for every single resolution and not take too much time and/or make the code unreadable due to size. Games like Battlefield ...
-1
votes
1answer
56 views

Reverting the view SDL

So in my SDL application, which I setup for OpenGL, if I were to do the following code: glBegin(GL_QUADS); glVertex2i(0, 0); glVertex2i(50, 0); glVertex2i(50, 50); glVertex2i(0, 50); glEnd(); The ...
0
votes
1answer
106 views

XNA GameDefaults Class Settings

Are items such as the GameDifficulty enum, game settings, and other things in the GameDefaults class used for a lot? If so, is there a way to edit them or anything of the sorts?
-2
votes
1answer
316 views

How to add difficulty levels to a Guess The Number game using rand()? [closed]

User guesses a random number (between 1 and 100 or 5000 and 25,000 depending on difficulty) that the computer picks. User selects difficulty from list, difficulty (1, 2, 3, 4) is assigned to int ...
0
votes
1answer
91 views

Dynamically editing a movieclip at runtime

I am trying to make a flash game(actionScript-3 if it matters) to test what I learned so far. And, in the game, I want to make the character(a robot?) customizable. The first solution I found was to ...
1
vote
3answers
224 views

How to properly handle equipment enchants

In my game, the player starts with a set of equipment and unlike many other hack-and-slash RPG's, this base set of stuff never changes - the player never acquires a new weapon or armor. The only way ...
4
votes
1answer
398 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 ...
3
votes
3answers
6k views

Java - Best Implementation KeyListener For Games

I am working on a game using only the swing and awt packages. Note I can only use the default Java libs. Meaning I have to use KeyListener. I have imported KeyListener properly, however, it is still ...
0
votes
2answers
170 views

Replay on game like “impossible game” [duplicate]

So I am making a simple game like "the impossible game" where the character just moves forward(from a 2D prespective) and the only thing you have to do is press the screen to jump at the correct time ...
-1
votes
1answer
241 views

Get distance between the edge of screen and a moving sprite

How to get the distance between the edge of the screen and a vector moving sprite? I want to get the distance between my moving sprite and the edge of the screen so that when my sprite touches the ...
1
vote
1answer
481 views

Hill-jumping game mechanic like Tiny Wings

I'm a huge Tiny Wings fan and I'd like to understand the game mechanic at a deeper level. What are some good resources for the basic Box2d (or similar) physics behind the hill-jumping game mechanic? ...
1
vote
0answers
157 views

Steering behaviour [closed]

So I found this steering behaviour code in a book but i dont really understand the last part of the code what exactly is he doing because im unfamiliar with c++. Why would you need to ...
1
vote
1answer
180 views

Story line implementation in a game

Say I have the general engine working and the only thing missing is a story line. Let's take the Pokemon games as an example: How would I implement surfing if I don't want to check wether the next ...
-1
votes
1answer
123 views

Game mechanics based on similar game [duplicate]

I want to make an iOs game that is based on an online flash game. There will be quite some differences, but the game mechanics will be extremely similar. Do I have to worry about getting sued by the ...
3
votes
1answer
431 views

Pygame: circular motion with Bresenham's algorithm

I'm trying to figure out a way to move an object in a circular path. I read about Bresenham's circle algorithm, but all the codes available online draw an entire circle. For my game, I want it so ...
1
vote
1answer
551 views

Pokémon character turning / facing: How is it achieved? Movement is already done though [closed]

You know that when the player playing Pokémon games want to change the facing of the main character, one would simply tap on the directional pad (D-pad) on the Game Boy (Color/Advanced/Advanced SP) or ...
1
vote
1answer
459 views

How to handle a player's level and its consequent privileges?

I'm building a game similar to Mafia Wars where a player can do tasks for his gang and gain experience and thus advancing his level. The game is built using PHP and a Mysql database. In the game I ...
-1
votes
1answer
96 views

Specifying 3D objects in a game [closed]

I have hands on experience in OpenGLES 2.0 , OpenGL and wish to apply the same in a 3D game development in Android. My idea is to develop a Combat game having fighter planes. I am trying to create a ...
0
votes
1answer
95 views

Follow behavior with randomization factor

I'm trying to make enemy follow player as in picture below, the code below is code for following player with steering behavior ( i'm not sure it steering works tho but it does follow player ), how ...
0
votes
5answers
1k 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 ...
0
votes
3answers
2k views

Fruit Ninja Swipe

I now have nearly completed a Cut The Rope type game. I need only a swipe mechanic to cut the rope, both the logic and the visual effect. Suggestions would be most welcome. I only need a concept for ...
0
votes
2answers
359 views

What beginner level game should I practice developing that has all the basics of game development? [duplicate]

I am a fresh graduate of Computer Science and am very nervoud for my skills test next week. So I have only about 4 days left till the exam and I really want that job which is game development. They ...
2
votes
3answers
171 views

Generate slot combinations

How do you generate combinations in slots to achieve a wanted probability of the user winning? Say, you decide that he should win $200. How do you generate combinations that'll cause winnings ...
0
votes
1answer
495 views

Pong horizontal movement algorithm

I was just wondering about the horizontal movement of a pong ball? What is the general algorithm used with this? The ball in my pong game just move vertically and I don't know about the algorithms ...
2
votes
1answer
141 views

How do I generate paylines and pay dots for a slot game?

I'm working on a HTML5 slot game and am completely stuck on the pay lines and the dots that produce the lines from 1 end to the other. What's the logic behind generating a random number of dots ...
4
votes
3answers
521 views

What game mechanic can I use to show that the player character is bored?

I'm designing a part in my game where the player must notice that his character feels bored about a certain mundane task he is doing, without being boring for the player. By observing the game ...
0
votes
1answer
150 views

Collision and gravity problems

So this is an easy question. I need to implement gravity in my game but where I'm stuck is what variables do I need in my Entity object for the calculations and a good algorithm that I can use for ...
-6
votes
2answers
914 views

Moving a sprite diagonal?

I wonder how I should increase and decrease the value of xPos and yPos to be able to move a sprite object diagonal and in different angles? canvas.drawBitmap(image, xPos - (image.getWidth() / 2), ...
0
votes
1answer
125 views

How do I check for non tilted 2D rectangle collision?

I'm trying to find out how to check collision with different rectangles. Now the cubes I have have a x, y, height, and width to them. So it might look like this on the screen: And not like this: ...
1
vote
3answers
515 views

Reward volatility of League of Legends matchmaking system

According to this article in league of legends matchmaking there's an average of 50/50 chances of winning or loosing a game based on how system ranks a specific account (player skill). However this ...
1
vote
2answers
583 views

Single or Multiple Behavior Trees?

I just finished coding a generic Behavior Tree structure for my games. My question is, when creating behaviors for enemy AI's, do I create one large behavior tree with every possible configuration as ...
4
votes
2answers
261 views

Game Design Issue: Special items implementation

I have a Match Two game similar to the bejeweled board. I am rewarding the player on speed of score. If he scores X in Y time , he gets a bomb. The time window is not rolling but discreat. I check ...
2
votes
1answer
424 views

Shooting Bullets Around a Sphere

I currently have a ship that can orbit around a sphere freely controlled by a joystick. There is a separate joystick that controls the gun and starts shooting when it is touched. Right now the ...
1
vote
5answers
2k views

how to rotate enemy to face player? [duplicate]

Okay so i havebeen rotating my enemy to face the player using float targetrotation = Math.Atan2(playerpos-enemypos); enemy.rotation = targetrotation; (<this line of code i want to change) This ...
5
votes
1answer
955 views

RPG game engine. Skill application calculations

Short preface I am a part of a small team which is entering game development. We're creating a new RPG setting with custom game system and mechanics based on dice rolls. I'm server-side java ...