A regular tessellation of a surface to create uniform, contiguous cells arranged in a consistent pattern.

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2
votes
1answer
19 views

Determine if a set of tiles on a grid forms an enclosed shape

Given a set of tiles on a grid, I want to determine: If the tiles make an enclosed figure If the tiles make an enclosed figure when you count the sides of the board as an edge of the figure If ...
0
votes
2answers
66 views

Generate a 2D distance grid in one pass

I'm trying to generate a 2D grid, for use in navigation, where each grid point holds the distance to the nearest obstacle (such as impassable terrain, or a constructed building). So for example, a ...
1
vote
2answers
1k views

How can I snap a game object's position to a grid?

I'm making a game that involves "falling block" gameplay elements. The problem is, I'm not quite sure how to make it so that the blocks will snap to some kind of grid, in other words, I'm not sure how ...
6
votes
3answers
232 views

How can I calculate “All squares within R” in a natural looking manner?

I'm working with a square grid, and I have a couple of effects that target all squares within R; in other words, a circular (or spherical) effect. But, circles being, well, circular, and squares ...
1
vote
2answers
132 views

Show a range grid movement as3

How do I show range of grid movement in AS3? When player controls a character and chooses "move" options, the grid of movement will be displayed as 3 grid of X, 4 grid of Y (Both sides, + and -). So, ...
0
votes
2answers
87 views

Unity Grid System

I'm creating a tower defence game and I've been struggling on one of the core parts of the game. What I'm trying to do is create a plane that the user can clink on and build a tower at that location. ...
0
votes
1answer
584 views

How to attach a sprite to a TMXTiledMap at a particular coordinate, in AndEngine?

I am trying to add a sprite at a "grid" location on the tiled map. The TMX tiled Map is like a grid, and you can access the size of the grid by calling mTMXtiledMap.getTileRows() and ...
1
vote
1answer
44 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 ...
22
votes
4answers
2k views

Why don't we use octogonal maps instead of hexagonal maps?

I understand the advantage of hexagonal tiles over square ones. But why aren't octagons used instead? I would think they would provide better, more natural movement in eight directions. I was ...
3
votes
3answers
116 views

Using uniform grids for collision detection - Efficient way to keep track of what a cell contains

I was looking for an efficient way to implement collision detection in a 2D game. A way that won't result in an O(n^2) level of complexity. A lot of people recommend to use Uniform Grids for this ...
0
votes
0answers
43 views

How to implement Uniform Grid for collision detection

I want to implement a unifrom grid to use for collision detection in my 2D Java game. This way instead of checking for each game object if it collides with any other object on the screen, I only check ...
2
votes
3answers
1k views

How do I code a 2D tile map? [closed]

I'm new to game development and I want to know how to create a tile map. The map should be divided into squares, such that each square represents a location like x : 10, y : 10. The width and height ...
1
vote
1answer
2k views

How do I match and clear sequences 3 adjacent coloured blocks?

I'm making a game with elements of a match-3 puzzler (such as Columns, Bejeweled or Tetris Attack). I don't know where to begin creating an efficient algorithm for matching and clearing. My ...
6
votes
1answer
177 views

Square Grid Polygonal Terrain Query algorithm?

I have a square, fixed-grid terrain with one terrain type per grid unit in my game, and I want to do an arbitrary polygonal terrain query which returns all of the grid units enclosed/intersected by ...
3
votes
1answer
125 views

How to create a grid based on random shapes?

How to create a "grid" using actionscript like the image below? Basically you have an area of 1100x615 which should be filled with shapes that could be rotated and scaled... Collision detection ...
1
vote
2answers
208 views

Filling in gaps in a grid

I have a set of terrain sprites available to represent terrain: Flat North-South Straight Cliff (x 2 allowing for slope direction either way) West-East Straight Cliff (x 2 allowing for slope ...
0
votes
1answer
332 views

How can I create a tile-based game map from a large source image?

I'm trying to make a huge tile-based map for my game. I've authored a large source image of the map and saved it, but now I'm unsure how to break this up into tiles and render it as a grid so I can ...
2
votes
3answers
391 views

Detecting Units on a Grid

I am making a little turn based strategy game in pygame, that uses a grid system as the main map to hold all the characters and the map layout. (Similar to Fire Emblem, or Advance Wars) I am trying ...
0
votes
1answer
45 views

Triangular grid and rendering to a texture (Direct3D 11)

Is it possible to render vertex data from a triangular grid into a texture with a same size (i.e. 3x3 vertices to 3x3 pixels - each pixel is representing one vertex)? Consider following situation. I ...
-1
votes
1answer
74 views

Grid based Collision Detection between circles [duplicate]

I am working on a 2d arcade game where I have 5 types of circles with different sizes: The ship, the missiles, and 3 types of monsters. This is what it looks like: Currently I'm using brute force ...
0
votes
1answer
209 views

How to implement uniform grids

Up until now, I implemented all-against-all collision detection in my games. It worked fine. But I reached a point where implementing this kind of collision detection, makes the game run poorly, ...
0
votes
0answers
77 views

Obstacle generation on a grid

I have a 2D grid. I'd like to place items and obstacles randomly. I also have a starting point. My main goal is to place the obstacles in a way that all the items are still collectable. What is the ...
1
vote
1answer
80 views

Where can I find info on grid based algorithms for stateless AI? [closed]

There seems to be an overwhelming amount of info out there on AI of all kinds, and it's kind hard to digest at once. For my testing purposes, I'm creating a "typical stateless AI", as described in ...
0
votes
1answer
103 views

What size textures do I need for a 2D grid based game if my tiles are larger than textures I have?

I'm building a grid-based game for iPad, and for usability purposes I've selected my game grid to be built of 75x75 squares. However, so far I've seen that the majority of (free)texture catalogs I can ...
0
votes
1answer
132 views

Overlaying grid for pathfinding

I have a simple problem. My game is not grid-based, so units can be at any arbitrary coordinate and move at different speeds. My obstacles are all rectangular and axis-aligned, so naturally it makes ...
1
vote
1answer
253 views

Grid-Based 2D Lighting Problems

I am aware this question has been asked before, but unfortunately I am new to the language, so the complicated explanations I've found do not help me in the least. I need a lighting engine for my ...
9
votes
2answers
268 views

Falling Blocks and complex shapes

I currently have a simple Tetris-like game and have come across a problem I cannot solve. Unlike Tetris where there is a single falling shape, I have multiple, potentially interlocking shapes that ...
2
votes
1answer
279 views

Path finding in hex grid based game

I'm making a TBS with hex grid. Player can move units from one hex to another using bridges, which will be randomly generated. I'm using cubic and axial coordinate system for my grid, it's well ...
25
votes
5answers
1k views

Simulating pressure in a grid based liquid simulation

I have a 2D grid based water system in my XNA game, we have a method using cellular automata to simulate water falling and spreading. Example of water flowing down a slope: Each tile can contain a ...
0
votes
0answers
53 views

Tetris-like wall-kicking not working [duplicate]

So I'm making a falling-block puzzle game. It's not a Tetris clone, but the block clusters move in a similar fashion. I want to make it so that if you rotate against a wall, or against another ...
14
votes
2answers
10k views

Hexagonal grid/tiles tutorials

Are there any platform or language agnostic (preferably step by step) tutorials regarding creating hexagonal grid based maps/games? I'm mainly interested in grid/tiles basics and not advanced game ...
2
votes
2answers
1k views

How to code a Game Grid in Java?

Suppose I wanted to code a game grid in java. Not an abstract text one but an actual grid with graphics and 'cells'. Would I have to draw line by line or is there a more efficient way? Also how would ...
0
votes
2answers
322 views

Roguelike corridor creation; Connecting rooms

I have a simple Tile[,] that I populate with Rooms. Now I need to connect the rooms with a single tile wide corridor. At first I used A* to hook up the rooms but that, of course, get's the best path ...
1
vote
4answers
112 views

Storing tile grid in a matrix: row major vs column major

I'm using a generic matrix container to store the tile grid for my RTS game. This is where I am confused: a matrix is traditionally row major, i.e. matrix(0, 10) means 'at 0th row, 10th column.' A ...
13
votes
4answers
1k views

Optimizing collision engine bottleneck

If this is your first time on this question, I suggest reading the pre-update part below first, then this part. Here's a synthesis of the problem, though: Basically, I have a collision detection ...
1
vote
1answer
408 views

Efficient Way to Draw Grids in XNA

So I am working on a game right now, using Monogame as my framework, and it has come time to render my world. My world is made up of a grid (think Terraria but top-down instead of from the side), and ...
0
votes
1answer
341 views

Grid Based Lighting in XNA/Monogame

I know that questions like this have been asked many times, but I have not found one exactly like this yes. I have implemented a top-down grid based world in Monogame, and am starting on the lighting ...
-1
votes
1answer
104 views

Ray picking gives inversed results

I'm trying to do a simple ray picking implementation to allow a user to select a cell in a grid rendered in 3D. I'm almost there, but I've ran into an issue which I can't seem to solve. Consider the ...
1
vote
1answer
548 views

C++ How to implement a spatial hash (for a 2d Game)

I feel kind of silly for asking this question, but are there examples or tutorials on how to implement a spatial hash (grid/cell-based partitioning), preferably in C++? I'm stuck and I have no idea ...
1
vote
2answers
348 views

Converting hexagon grid coordinate system

As I have been building on a RTS game based on hexagon grid built in javascript. I stumbled across a problem regarding the coordinate system. Have been trying to implement a A-star system to find ...
1
vote
2answers
338 views

Get position of tile in tileset

Take this image: http://ScrnSht.com/nkvusq How can i get the position of tile 14 (or any other) when only knowing the following: Tile ID: 14 Rows: 4 Columns: 7 The end result should be 2x4.
4
votes
2answers
239 views

Grids and vertices

I have no idea what this is even called or even to start searching how to solve this problem. So figured I would post here for any information at all. Specially looking for already known solutions to ...
7
votes
2answers
2k views

How do I rotate a structure of hexagonal tiles on a hexagonal grid?

My 2D isometric game uses a hexagonal grid map. In reference to the image below, how do I rotate the light blue hexagon structures by 60 degrees around the pink hexagons? EDIT: Main hex is (0,0). ...
1
vote
2answers
464 views

Algorithm for exploring/filling grid map

I'm working on a small game that takes place on a grid map. I'd like to write an AI that is able to explore the grid map by filling as much of its available space as possible. From any given position ...
0
votes
1answer
437 views

How do I make an entity move once per second in crafty.js

I am trying to implement "Snake" using crafty.js but I can't seem to get the snake entity to move just once in a second. How do I do this?
-1
votes
1answer
173 views

Refering to an object from an array in Java [closed]

In my game, the whole thing is based off of grids. So the map is a dual dimensional array of 32 (32 x 32 grid map). Now what I want to be able to do is to grab a grid and be able to access it and ...
8
votes
1answer
134 views

Flowfield density conversion

I'm trying to implement flowfield navigation, as described in http://grail.cs.washington.edu/projects/crowd-flows/ but I can't understand how the Density Function in Figure 4 of the paper is supposed ...
3
votes
2answers
315 views

AI remembering obstacles without a grid

For some research purpose I've build a small tanks game where you have 1 tank controlled by a player and one or more NPC tanks. Now I want these NPC tanks to navigate through a field which they have ...
1
vote
1answer
131 views

Travelling in a 2D grid

I have a 2D grid (x,y coordinates) where each cell corresponds to each pixel of the interface that I am working with and I have a point A(x1,y1). Now I need to travel around in the grid, and I wont ...
13
votes
1answer
763 views

Get ring of tiles in hexagon grid

Thanks to this post I'm able to collect adjacent tiles to a given tile. But I'm pretty much stuck on an algorithm that gives me only a "ring" of tiles specified by an offset. The algorithm given in ...