Flat two-dimensional space. Positions represented with `x`, `y` coordinates.

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3
votes
1answer
743 views

How to implement throw curve with virtual height in a 2D side-view game

I am working on a 2d side-view soccer game that looks like this image: But now I stuck on how to implement parabola pass ball. I have found many questions corresponding to my problem: Calculating ...
3
votes
1answer
443 views

what's the best way of panning in a 2D scene

Up to know I have used this functions to create a 2D scene (for showing images) and to pan on it ( in fact it's a customization of the class COpenGLControl here in codeguru) : void ...
0
votes
1answer
211 views

2D engine that uses Flash Platform classes? [closed]

I want to develop a 2D game for Android, but, I want to use Flash Platform's framework APIs, ex: Sprite, Shape, Graphics, Bitmap .. etc as I have already wrote my game in AS3 .. Is there a 2D engine ...
3
votes
1answer
484 views

Java: AI to make a mob face the player working half-way correctly

While creating some basic AI for my "ghost" mob that is just up for testing at the moment, I thought of allowing it to face the player, depending on the player location. I get it to work correctly, ...
1
vote
1answer
120 views

How to render models using a personalized projection matrix?

I'm creating a game with a great sprite demand. Out team is considering automatizing the sprite generation using 3D models. The problem is we have a very particular ortographic projection: We have ...
2
votes
1answer
361 views

How can I clean up and smooth out procedurally generated terrain?

I am experimenting with procedural content generation, and starting with generating terrain from fractional brownian noise. The terrain produced looks fairly realistic, but has many artifacts and ...
2
votes
2answers
436 views

Split up a screen into regions

My task: I want to split up a screen into 3 regions for buffs-bar (with picked items), score-info and a game-map. It doesn't matter are regions intersect with each other or not. For example: I have ...
2
votes
1answer
727 views

One to one aiming in 2D platformer

Hello all I have been having an issue with a 2D platformer I'm working on in Unity. It has an aiming style similar to Shadow Complex where the aiming will rotate around the character in direction to ...
2
votes
0answers
144 views

cross resolution level design advice [closed]

I was looking for some beginner advice regarding level design across multiple resolutions. I believe the answer is likely "it depends", but any input from anyone with real experience is very ...
0
votes
1answer
323 views

Map handling - Indoors/Outdoors and loading large maps

I have two questions regarding the handling of maps. Question 1. My map will consist of outdoor enviroments as well as dungeons, houses etc. How would I go on about connecting the outdoors with the ...
1
vote
1answer
372 views

How could I figure out the shortest way to turn, and whats the angle? [duplicate]

I'm creating some robots for my tank game. I want them to find each other and shoot each other down, so I'm trying to implement a way for them to turn towards each other, and turn the shortest way. ...
3
votes
1answer
657 views

How do you construct a node map for pathfinding in a non-tiled 2D environment? [duplicate]

A* and Dijkstra's pathfinding algorithms work by navigating a node map. In a tile-based 2D environment, these nodes could easily be inferred to be the literal x,y positions of the map. For example, ...
3
votes
1answer
768 views

Rotate 2D Isometric World

Games like RollerCoaster Tycoon allow you to rotate the view at 90 degree intervals. I'm wondering how I could apply this to a game I'm making. I'm using MonoGame... but I'm wondering more if anyone ...
1
vote
3answers
786 views

How to deal with characters picking up and dropping objects in a 2D game [duplicate]

I'm quite new to game development, so would like to get a consensus on methods of doing this. My game features a 2D character that is able to pick up and drop objects, for example, a stick. My ...
7
votes
1answer
436 views

How do I get the areas enclosed by an arbitrary 2D shape?

In my game I want users to be able to draw arbitrary 2D shapes of any length around game objects. The shapes must be closed and drawn with a single stroke that does not overlap. For example: I ...
1
vote
2answers
230 views

Map logical coordinates to graphical for walking

I'm having a problem with mapping logical coordinates to graphical ones when my character is walking. I've been able to map them without the graphical walking in between, i.e it just "jumps" from one ...
0
votes
0answers
395 views

Android SurfaceView framerate issue

I am using SurfaceView to draw a lot of Bitmaps onto canvas. This causes really variable frame rates depending on how many objects are present. My code below: public class OriginalView extends ...
1
vote
0answers
146 views

Good Resolution for 2D Games [closed]

I am trying to figure out what is a good resolution for my 2D platform game. My images are 16x16 and my frame is 640x480 but I will allow it to be fullscreen also. I need a compatible resolution for ...
1
vote
2answers
307 views

Bullet entry Point around Player Object

I have a player rotating by the mouse and want the bullets line up with the player's gun. Right now they simply come from the point of the player and shoot in the direction of mouse. I just need the ...
0
votes
1answer
492 views

C# XNA4 2D Collision Detection

I am working on a 2D engine in Xna and am running in a bit of trouble with Collision implementation. What I want to do is have an interface ICollidable that I can add to GameObjects that are ...
2
votes
2answers
275 views

Large resolution differences

I want to develop a game on multiple devices such as PC, Android or IOS. Want it to be in 1080p, but that means a massive scale down for the smartphones. I know how to do that, just render everything ...
5
votes
2answers
3k views

How to draw texture to screen in Unity?

I'm looking for a way to draw textures to screen in Unity in a similar fashion to XNA's SpriteBatch.Draw method. Ideally, I'd like to write a few helper methods to make all my XNA code work in Unity. ...
0
votes
1answer
413 views

How to simulate the movement of a ball in 2D due to force, gravity, and friction with surface?

I have a ball which I kick with some force. It has a starting x,y position, sat (2,3) and an intended target x,y say (7,8) position. That means I have to translate by (7-2, 8-3) i.e. 5 x units and ...
2
votes
3answers
629 views

How do I represent walls in a 2D tile based map?

I'm trying to create a simple 3D(2D) Dungeon Crawler but I am going to be using simple flat images to show the user they are in a "3D" world. Now what I mean is something like Sword and Serpents on ...
1
vote
2answers
404 views

What am I missing? (Converting 2D mouse coords to 3D space)

I'm making a networked game which has a birds-eye view and I'm trying to convert the 2D mouse coordinates into 3D space. Right now I have a perfectly flat grid and it intends to remain perfectly flat, ...
1
vote
2answers
1k views

2D Island generator algorithm - chances of tile becoming land

I am developing my first island generator (in c#). I am using this algorithm as my basic idea : http://www.funstormgames.com/blog/2012/09/procedural-island-generation-for-ludum-dare-24/ Basically ...
4
votes
3answers
6k views

what is more expensive 2D sprites or 3D models?

Me and my friends are programmers.We decided to try ourselves in game design. As we don't want to find ourselves in debts, we decided to avoid investors. We want to develop and publish a couple of ...
5
votes
1answer
1k views

2D Rope with verlet and Semi-implicit Euler integration

I'm trying to create 2D rope. Chain based solution is not working pretty well, so I'm looking for new approach. Every good looking rope implementation is based on verlet integration, but this method ...
0
votes
2answers
677 views

How to manage maps in 2D MMO?

I'm curious about how I should be drawing my game world. I'm going to have a map, let's say 1000 by 1000 tiles in size, with many players on it. Each player will be at a position in a map, and when ...
0
votes
1answer
148 views

simple collision detection 2d match 3 gem over gem

im building simple match 3 game . now i have the parts where i move the gems with the mouse only in the straight X or straight Y up and down and both sides , no 45 degrees movements on grid . now im ...
0
votes
0answers
414 views

Rendering an Isometric Tile-based Map

I'm coding an isometric game in c++ with SDL. My question is this: At the moment, every cycle the game redraws the entire map layer by layer, inserting actors and cursors and so on at the appropriate ...
1
vote
2answers
787 views

How would I detect if two 2D arrays of any shape collided?

Say there's two or more moveable objects of any shape in 2D plane, each object has its own 2D boolean array to act as a bounds box which can range from 10 to 100 pixels, the program then reads each ...
2
votes
1answer
88 views

Display CCSprites with a delay

I am a beginner in cocos2d and I wanted to display coin CCSprites as soon as it moves off the screen with a 5 second delay. So this is what I wrote in my main gameplay layer to add 7 coins in a row: ...
6
votes
1answer
707 views

How to create a character animation where the parts of the sprite change?

Let's say I'm creating a game (in Java or C++). In this game I have a character that can do a sword swing animation, but the character can equip different swords. Do I have to make an animation for ...
3
votes
1answer
338 views

How can I apply a “genie animation” to a CCSprite?

I am new to Cocos2D and following this tutorial. I want to animate a CCSprite with the genie effect that OS X uses for hiding windows to the dock and showing them again. Here's an example from an ...
3
votes
2answers
353 views

Is there a significant importance in what axis I chose in my top down 2.5D game?

I have read several posts stating what seems like a "standard" in how to chose your 2d axises in a 3d engine. It is often Y up on screen and X right on screen. However, in these examples I often see ...
0
votes
2answers
596 views

How do I implement a 2D camera in JPanel?

I'm trying to create a mario-esque game in Java and am at the point of implementing a camera. Following normalocity's example, I understand the difference between the GameWorld and the Camera that ...
28
votes
6answers
5k views

Is OpenGL appropriate for 2D games?

I have been teaching myself the OpenGL library for a while now, and want to start making a game. However, for an easier introduction, I want to start with something 2D, such as a top down ...
3
votes
1answer
178 views

Smoothing the scrolling path in 2D

I have the following problem: In a 2D game the screen can scroll in any of the 4 directions. Basically, the center of the screen during scrolling moves from (x1,y1) to (x2, y2) whereby (x1,y1) is the ...
7
votes
1answer
2k views

Pathfinding with 2D, non-grid based movement over uniform terrain

I'm looking for the best solution to pathfinding in my game. The map is ultimately grid-based, but entities are positioned using floats, and can move in any direction to any point on the map. The ...
1
vote
1answer
104 views

Graphics.drawImage will only fill a small portion of my control

I'm trying to create a map class for a simple 2D game. The map has an array(100,100,5) of string, returning the kind of tiles to draw ( with 5 possible layers from 0 to 4) players will move on the 2nd ...
1
vote
1answer
286 views

World to Pixel Transformation

My objects have a location in world coordinates (basically 1.0f is a meter). If I simply draw my objects using their world coordinates, each meter will correspond to a pixel. Obviously that's not what ...
8
votes
2answers
227 views

When should I represent points and sizes as structures?

As part of my simple Ruby 2D game development framework, my game objects have position (x and y values) and size (width and height). class MyGameObject attr_accessor :x attr_accessor :y ...
2
votes
1answer
1k views

How to handle a Tile Map Scrolling [duplicate]

i'm making a video game, and i'm having, i think, a concept problem. The game will be a platformer which will use tile maps, so to start i will create a mask matrix indicating the tiles to be loaded, ...
3
votes
1answer
375 views

Effecient finding of long-range spotting targets

I'm creating a top-down 2d strategy game, with a square grid map. So far, I've used Bresenham's line drawing algorithm in a circle to determine what's in LOS of each unit, and then targedt one of the ...
1
vote
0answers
364 views

2D Camera transformation sidescroller

i am currently trying to dive into 2D programming with DirectX, especially bulding a tile based sidescroller. I have worked with some chapters from a book (Advanced 2D Game Development) but always ...
0
votes
2answers
314 views

Best 2D graphics API when the only functionality needed is writing individual pixels to the framebuffer [closed]

I have been dreaming for years about programming a relatively simple, but from the standpoint of the game engine, a very unusual 2D game engine for the PC platform. I am planning to use either C or ...
9
votes
1answer
471 views

How do I implement 2D shadows cast between layers?

How could I implement 2d shadows that are cast by objects in a different layer? NOT like the dynamic lighting in the well known tutorial from Catalin Zima : But like the shadows of the pipes in ...
7
votes
2answers
263 views

How do I handle game objects with two depths?

I want to be able to do what you see in the image, but with a single wall. The player should be able to walk on either side of the same object. That is, the same wall is below the hero when I go ...
-3
votes
1answer
126 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 ...