Category: Hex grid game unity

This tutorial is the first part of a series about hexagon maps. Many games use hex grids, especially strategy games, including Age of Wonders 3, Civilization 5, and Endless Legend. We will start with the basics, incrementally adding features until we end up with a complex hex-based terrain. This tutorial assumes you have completed the Mesh Basics series, which starts with Procedural Grid. It has been created with Unity 5. The entire series progresses through multiple versions of Unity.

The final part is made with Unity Why use hexagons? If you need a grid, it makes sense to just use squares. Squares are indeed simple to draw and position, but they have a downside. Take a look at a single square in the grid.

Unity Hex Grid System

Then look at its neighbors. There are eight neighbors in total. Four can be reached by crossing an edge of the square. They are the horizontal and vertical neighbors. The other four can be reached by crossing a corner of the square. These are the diagonal neighbors.

hex grid game unity

What is the distance between the centers of adjacent square cells in the grid? If the edge length is 1, then the answer is 1 for the horizontal and vertical neighbors. The differences between the two kinds of neighbor lead to complications. If you use discrete movement, how do you treat diagonal movement?

Do you allow it at all? How can you create a more organic look?Eduardo Oriz and Mike GeigMarch 13, Retro games with simple mechanics and pixelated graphics can evoke fond memories for veteran gamers, while also being approachable to younger audiences.

Get our sample project and follow along! Mega Cat Studiosout of Pittsburgh, Pennsylvania, has turned the creation of highly accurate retro games into an art form. So much so, in fact, that several of their titles can also be acquired in cartridge form and played on retro consoles like the Sega Genesis.

Recent additions to the Unity workflows have made it a well-suited environment for creating your retro games. Additionally, you can use the new Pixel Perfect Camera component to achieve consistent pixel-based motion and visuals. You can even go so far as to use the Post Processing Stack to add all sorts of cool retro screen effects. Before any of this work can be done, however, your assets will need to be imported and set up correctly. Our assets first need a correct configuration to be crisp and clear.

If compression is used, the data of the image will be compressed which results in some loss of accuracy to the original. This is important to note, as it can cause some pixels to change color, possibly resulting in a change to the overall color palette itself.

The fewer colors and the smaller your sprite, the greater the visual difference compression causes. Another thing to be aware of is the Max Size setting for the image in the Inspector.

This will usually result in some loss of quality and cause the image to become blurry. Since some hardware will not properly support textures over on either axis, it is a good idea to try to stay within that limit.

Above, is a sprite from a spritesheet that was on one axis with max size set at As you can see, increasing the Max Size property to allows the image to be sized appropriately and avoid a loss of quality. If the sprite were to not pivot from a pixel exactly, we would lose pixel-perfectness.

Pivots can be set for sprites in the Sprite Editor, which can be opened from the Inspector when you have a sprite asset selected. A pixel-perfect result will look clean and crisp. Select 2D Pixel Perfect from the list on the left, and select install on the top right of the window. To add it, go to your main camera and add the Pixel Perfect Camera component to it.

If the Pixel Perfect Camera component option is not there, follow the previously stated instructions to first import it into the project. The component will display helpful messages in the game view explaining if the display is not pixel-perfect at any given resolution. Now, you can go through each setting to see what they do and how they affect the look of your game! Original not rotated 2.

Without Upscale Render Texture rotated 45 degrees, pixel-perfectness is lost as pixel size varies on diagonal edges 3. With Upscale Render Texture rotated 45 degrees, pixel-perfectness is maintained as all pixels are the same size, but the sprite is less accurate looking compared to the original.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. A hex grid generation tool, for use in unity. Much of the hex logic is drawn from Red Blob Games. I made this because I initially struggled with the implementation so now you don't have to.

Feel free to leave any feedback or suggestions, I will consider implementing suggestions that I think are generally useful to all users. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

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hex grid game unity

C Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.

Latest commit. Latest commit ec Sep 22, UnityHexGrid A hex grid generation tool, for use in unity. Rectangle ; grid. Flat ; grid. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Update to Unity version Sep 21, Updated ignore, scenes aren't need for this project. Sep 27, Initial commit. Oct 14, Discussion in ' Scripting ' started by count23Apr 13, Search Unity.

Log in Create a Unity ID. Unity Forum. Forums Quick Links. Asset Store Spring Sale starts soon! Trying to build a dynamically sized Hex Grid Discussion in ' Scripting ' started by count23Apr 13, Joined: Apr 13, Posts: Howdy Folks, I'm stumped on where to begin with unity on a little project I'm wroking on. I'm quite familiar with the logic and provisioning of a grid, I havent quite descided if i want to restrict the game grid to an arbitrary size and use a fixed 2d array for the grid contents, I'm considering using a 2d array of pointers instead so i can allocate extra memory and have a truely dynamic size for the map.

Since it's space based, the tiles themselves will actually be transparent, I want to use hexagons for a visible territory border and "selected" indicator only, I have no idea what I can use for this. I've been trying to draw hexagons using the create mesh function but I can't seem to figure it out.

My plan was to create hexagonal tiles and try to use a proceedural texture to colour the tiles with a ramp based on the ownership of the tile. The only other thing I could think of is to generate a long, medium and close resolution of a hexagon with an alpha channel, use a ramp to colour it and map them to planes instead. But again, I still don't even know how to do that. So after all my rambling, I guess my real question is, how to I draw hexagons in a scene in unity, that'll achieve what I want.

EDIT: I should mention i'm doing this in Cbut I've got a good enough understanding of javascript to be able to translate that into what I need. Last edited: Apr 13, Joined: Jan 3, Posts: Thanks, but you've kinda missed the point. I know how the logic and the coding backend works for actually generating, I need to actually know how to get unity to DRAW it.

Line renderer looks like it could work. Can i create a hexagonal plane using line renderer? I was trying to use mesh but I couldn't get anything more then simple triangles. Joined: Feb 3, Posts: 2, Well, a hexagon is nothing more than a bunch of connected lines, right? Joined: Dec 29, Posts: 12, What's your problem with drawing it? A bit more detail there would let us help you, I think. As it is, all I can suggest is going through the provided documentation for displaying code-generated meshes.

You can do whatever you want using a line renderer. You give it a bunch of points and it draws a line through them.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. What could be the approach towards making this kind of hex grid as my terrain will be un-even.

hex grid game unity

I have seen approaches like mesh creation, using tile-map, unity projectors but eventually I feel like this should be something using shaders but what about selection? Can someone please guide me in a right direction. I think the hexa grid projection can be solved with Unity built in Projector, you can use ortoghraphic projection with it, so it does not matter if your terrain is uneven, also it has a convenient way for selecting which layers are affected only terrain, your buildings etc The projector, is a shader magic tho, it blends the picture you give it to it, and the layer below it If projector does not satisfies your needs, im pretty sure there are grid shader already written for unity.

About the selection, i think you could also solve that with projector, or give some trail effect to the grid boundaries? I think they cast a spline using the hex grid border points, then blend it on the terrain. I saw a shader that could draw lines on a terrain, so you might found it!

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Learn more. Asked 6 months ago. Active 6 months ago. Viewed times. Syed Munim Raza. Active Oldest Votes. My tips for you : I think the hexa grid projection can be solved with Unity built in Projector, you can use ortoghraphic projection with it, so it does not matter if your terrain is uneven, also it has a convenient way for selecting which layers are affected only terrain, your buildings etc About country borders in Civ: I think they cast a spline using the hex grid border points, then blend it on the terrain.

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Menyus Menyus 1, 1 1 gold badge 3 3 silver badges 20 20 bronze badges. Unity Projectors are bit costly when it comes to using multiple projectors as it has to redraw again and eventually will lead to multiplying the tris and draw calls. There must be something more optimised as this should be shipped to mobile.

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home?This guide will cover various ways to make hexagonal grids, the relationships between different approaches, and common formulas and algorithms.

Hexagonal grids aren't as common as square grids. I've been collecting hex grid resources [1] for over 20 years, and wrote this guide to the most elegant approaches that lead to the simplest code, largely based on the guides by Charles Fu [2] and Clark Verbrugge [3]. Most parts of this page are interactive. The code samples on this page are written in pseudo-code; they're meant to be easy to read and understand.

Hexagons are 6-sided polygons. Regular hexagons have all the sides the same length. I'll assume all the hexagons we're working with here are regular. The typical orientations for hex grids are vertical columns flat topped and horizontal rows pointy topped.

Hexagons have 6 sides and 6 corners. Each side is shared by 2 hexagons. Each corner is shared by 3 hexagons. For more about centers, sides, and corners, see my article on grid parts [4] squares, hexagons, and triangles. Each corner is size units away from the center. In code:. Note that the diagrams on this page use the y axis pointing down angles increase clockwise ; you may have to make some adjustments if your y axis points up angles increase counterclockwise.

Next we want to put several hexagons together. The horizontal distance between adjacent hexagon centers is w. Some games use pixel art for hexagons that does not match an exactly regular polygon.

The angles and spacing formulas I describe in this section won't match the sizes of your hexagons. The rest of the article, describing algorithms on hex grids, will work even if your hexagons are stretched or shrunk a bit, and I explain on the implementation page how to handle stretching.

Now let's assemble hexagons into a grid. With square grids, there's one obvious way to do it. With hexagons, there are multiple approaches.

Euclidean vs manhattan distance for clustering

I like cube coordinates for algorithms and axial or doubled for storage. The most common approach is to offset every other column or row.

Columns are named col q. Rows are named row r. Another way to look at hexagonal grids is to see that there are three primary axes, unlike the two we have for square grids. There's an elegant symmetry with these. This is a weird idea but it helps us make hex grid algorithms simpler. In particular, we can reuse standard operations from cartesian coordinates: adding coordinates, subtracting coordinates, multiplying or dividing by a scalar, and distances.

Notice the three six hex grid directions are halfway between two of the cube axes. We'll see this in the neighbors section, where moving along one of the six hex grid directions involves changing two of the coordinates.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

However, in practice, if you have a lot of NavAgents in a scene and start seeing odd behavior, you have three options:. Increase the NavAgent radius, which will slow the game down and create strange behavior if destinations are too close to one another. I created this HexGridManager as a lightweight way give GameObjects destinations that result in less stacking up, without affecting pathfinding.

The main use case is to find locations on the nav mesh that are near, or next to, a target, and have some level of confidence that the area will not be too close to other such objects. For my use case, it's ok if objects path relatively close to one another, but not ok if they end up standing on top of each other. The size of the hex unit is configurable, and the hex map can and should be pre-baked into the scene, avoiding the cost at runtime.

The basic concept is that for any given GameObject, you can create an Occupant within the manager.

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The occupant maps the GameObject's position to a logical hex grid on the NavMesh. The Occupant can also be given a radius, in order to occupy an area on the map that is greater than one hex.

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If a GameObject would like to path to a location next to another GameObject, the HexGridManager can be queried for a vacant neighboring hex, which could be used as the NavAgent's destination. Whenever an Occupant detects that its GameObject has moved to a new grid hex, the GameObject is sent the "OnGridChanged" message, allowing it to take action. RandomMovement - a basic demo of many navigating GameObjects and what the grid map looks like as they path around.

Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Create a logical grid on top of Unity's NavMesh. C GLSL. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit Fetching latest commit….

Simple Hex-Based Game Design for Unity 3d - Episode 1 [Livestreamed]

How to use this: The size of the hex unit is configurable, and the hex map can and should be pre-baked into the scene, avoiding the cost at runtime. What's here? A ready-to-use UnityPackage. Also, this repo contains a sample project with the source code and two scenes: RandomMovement - a basic demo of many navigating GameObjects and what the grid map looks like as they path around Swarming - a target GameObject is swarmed by many other objects.

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