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

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0
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1answer
78 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
265 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
329 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, ...
1
vote
1answer
107 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
181 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
183 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
568 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
357 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
768 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
2k 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
55 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 ...
18
votes
2answers
17k views

Hexagonal grid/tiles tutorials [closed]

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
3k 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
540 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 ...
2
votes
4answers
154 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 ...
1
vote
1answer
784 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
502 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
128 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 ...
2
votes
1answer
1k 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
529 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 ...
4
votes
2answers
296 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 ...
8
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). ...
2
votes
2answers
906 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
658 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
249 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
145 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
340 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
141 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
1k 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 ...
3
votes
1answer
397 views

Fluid Particle Grid

So recently I have been looking at some fluid simulation techniques, specifically Smoothed Particle Hydrodynamics. One of the key components is a grid to avoid O(n^2) searches. I have been having some ...
7
votes
3answers
2k views

Storing a Hex Grid

I've been creating a small hex grid framework for Unity3D and have come to the following dilemma. This is my coordinate system (taken from here): It all works pretty nicely except for the fact I ...
14
votes
2answers
355 views

Territory patrol planning

I am developing a game/simulation where agents are fighting for land. I have the situation shown in the picture below: These creatures are walking around and occupying pieces of land they step on ...
2
votes
1answer
991 views

Help with a Fast 2D Grid-Based world rendering technique

First I'm going to give you my current situation and explain what I'm attempting. I will then pose my question below. I will attempt to include a "TL;DR" for those of you who prefer things to be ...
-1
votes
1answer
179 views

In a regular grid, how can I tell which tile a position is in?

I have a position on the screen, how do I calculate which grid tile that position is inside? I know the number of tiles in the grid, and the size of the screen (including how many tiles fit on it ...
9
votes
3answers
4k views

Road / river generation on 2d grid map

This is a newbie question, but here it goes: My map is a 2d grid, and I want to generate roads and rivers. The route from the starting to ending point must not be the optimal route in number of ...
5
votes
1answer
3k views

More efficient way to implement Line of sight on a 2d grid with ray casting?

Consider a 2d grid of tiles, and an approximated sphere of coordinates - centered on the player - that represents line of sight. The goal is to block the line of sight beyond obstacles (ie walls). ...
4
votes
2answers
2k views

Simulating “line of sight” with obstacles on 2d grid?

Ran into an interesting problem. I need to figure out how to simulate line of sight - simple enough, just on a 2d grid with obstacles. Either a grid cell is visible, or it's not. I can get something ...
5
votes
1answer
390 views

Finding cells between two points (along line) to finding obstacles

My game is in 3D environment partitioned with 2D grids in 2 dimensioned array So I can get any cell/node by passing row and col like return _nodes[r][c]. When the an attacker attacks an enemy with ...
6
votes
4answers
2k views

Generating triangles from a square grid

I have a 2D square grid of values representing terrain elevations, and I want to generate triangles from that grid to make a 3D view of the terrain. My first thought was to split each square ...
0
votes
1answer
446 views

Alternatives to NSMutableArray for storing 2D grid - iOS Cocos2d

I'm creating a grid-based iOS game using Cocos2d. Currently the grid is stored in an NSMutableArray that contains other NSMutableArrays (the latter are rows in the grid). This works ok and performance ...
1
vote
4answers
165 views

Logic that can traverse all possible layouts, but not checking every combination of identical pieces?

Suppose we have a grid of arbitrary size, which is filled by blocks of various widths and heights. There are many 2x2 blocks (meaning they take a total of 4 cells in the grid) and many 3x3 blocks, as ...
3
votes
3answers
384 views

How to choose cell to put entity in in an uniform grid used for broad phase collision detection?

I'm trying to implement the broad phase of my collision detection algorithm. My game is an arcade game with lot of moving entities in an open space with relatively equivalent sizes. Regarding the ...
1
vote
1answer
389 views

Creating an interactive grid for a puzzle game

I am trying to make a slitherlink game, and am not too sure how to approach creating the game, more specifically the grid structure on which the puzzle will be played on. This is what a empty and ...
10
votes
2answers
1k views

Finding shapes in 2D Array, then optimising

I've just been allowed an image...The image below from my game shows some darkened blocks, which have been recognised as being part of a "T" shape. As can be seen, the code has darkened the blocks ...
2
votes
1answer
189 views

Should I take line thickness into consideration for a grid based light game?

I'm currently rewriting some horrific code I wrote for a prototype and have stumbled right at the start! The game I'm working on revolves around directing light and there is a small ambiguity in ...
1
vote
2answers
2k views

How can I make a tile appear on top of another without completely blocking the tile below?

Making a small RPG with libdgx just for learning about how to draw tiled maps and move around in them. I've got the tiles drawn and OrthographicCamera stuff figured out so I can see my world. My ...
5
votes
2answers
2k views

3D terrain map with Hexagon Grids

I'm working on a hobby project (I'm a web/backend developer by day) and I want to create a 3D Tile (terrain) engine. I'm using XNA, but I can use MonoGame, OpenGL, or straight DirectX, so the answer ...
3
votes
1answer
377 views

Space Invaders-type game: Keeping the enemies aligned with each other as they turn around?

OK, so here's the lowdown of the problem I'm trying to solve. I'm developing a game in PyGame that's a cross between Space Invaders and Columns. I'm trying to make the motion of the enemies similar ...
1
vote
1answer
707 views

Drawing 2D Grid in 3D View - Need help with method

I'm trying to draw a simple 2D grid for an editor, to able to navigate more clearly around the 3D space, but I can't render it: Grid2D class, creates a grid of a certain size at a location and should ...
2
votes
1answer
388 views

Detect if square in grid is within a diamond shape

So I have a game in which basically everything is a square inside a big grid. It's easy to check if a square is inside a box whose center is another square: *** x *o* --> x is not in o's ...