Questions tagged [terrain]
Used to describe the physical geography of a location. This can include elevation, slope and orientation of features.
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How to have RTS units move along un-even terrain?
My current world is a flat 2D plane.
I want to make the terrain 3D, like hills, bumps, etc. If I tell a unit to go to a position (x, y) in 2D, how do I make sure ...
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Understanding this terrain intersection algorithm
I was looking for a fast way to get a ray intersection point of a terrain defined by a heightmap and I stumbled upon this: https://publications.lib.chalmers.se/records/fulltext/250170/250170.pdf
At ...
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Terrain does not show up in distance in play mode, but does in editor
I'm trying to make a big landscape with high mountains but the terrain doesn't show in the distance in play mode.
Which settings should I change, or what can I do?
My terrain is divided in many pieces ...
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1answer
23 views
Bake a heightmap from Editor
I want to implement a heightmap-based water simulation algorithm in Unity. I know exactly how I would approach this in pure low-level C++ and OpenGL (and also Shadertoy), and most of it is ...
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1answer
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Is grass object amount limited in Unity?
I'm using Unity 2019.3.7f1 free version to create a small game project. I have a large terrain which I want to fill with grass. To achieve that I'm using the grass brush tool provided with the terrain....
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1answer
52 views
Building meshes conforming to terrain deformation
I have an uneven terrain on which the player is supposed to build buildings. For most structures I can just fudge the foundations, have them extend through the terrain.
For roads, pipes, tracks and ...
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1answer
47 views
A terrain with underground tunnels
The Terrain tool in Unity is great for constructing 3-D landscapes that are open from above. I am working on a game that happens entirely inside tunnels (specifically, blood vessels in a human body. ...
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1answer
48 views
Unity Terrain Tools plants trees sideways
My tree is clearly straight, but painting trees result in sideways ones.
What can cause this?
Tree is straight when placed manually as a prefab.
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1answer
63 views
Diagonal discontinuity in perlin noise terrain
I'm using Bilinear filtering to interpolate perlin-noise based height data. However, when I render the resulting plane mesh, there is this obvious diagonal discontinuity in the generated terrain.
See ...
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32 views
Texture disappearing from landscape
I am using Unreal Engine 4.25, and I have an issue with adding textures.
I have some textures right now in my landscape, but lately when I add a texture to the landscape, suddenly all texture ...
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0answers
67 views
Rendering smooth ground
I'm attempting to render terrain made out of a triangle mesh. The problem is that whenever I have a northwest -> southeast ramp in the terrain, I get this diamond pattern:
The issue is that at the ...
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Turning a Unity Terrain into stepped stairs aspect
Having the following code; i'm trying to turn my terrain into a stepped/terraces like terrain:
But sadly it doesn't work; i'm pulling my hairs out here.
What dumb obvious thing am i missing ?
...
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Update to the ROAM Large Scale Mesh LOD Method
I'm looking to create very large planetary terrain meshes. The most efficient and researched methodology I've seen so far was the ROAM 2.0 Method. However, this was written and published in 2005. Does ...
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21 views
Shader Tiling Texture Overlapping between X and Z Axes
I have a shader (code at the bottom of this) that I'm using for a terrain. It renders a texture on the sides of the terrain (the x and z axes) and between those axes the texture tends to overlap. I ...
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1answer
35 views
Count Unity terrain size In blender?
My unity terrain size is 150*150, and I want to create a plane in blender have the same size. How to figure the correct size ?
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How to programmatically overlay a shader on a terrain by mask (Unity)?
I can paint the terrain with textures.I would like to see water drawn with a shader, and not a stationary water texture on the terrain. Moreover, it was possible to assign a shader to the terrain, but ...
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Polygon filling algorithm
Share your methods or algorithms for painting areal objects, I will be very grateful. I have points List <Vector2> or ...
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21 views
Editing terrain in Blender
I have created a terrain mesh in World Machine. When editing the mesh in Blender is it possible to select a vertex and adjust its coordinates using text entry? I need the height of each vertex to be ...
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1answer
245 views
Which Terrain LOD algorithm should I use for super large terrain?
My game needs a terrain, the requirements are:
Freely Zoom in & zoom out, like GoogleEarth. Max resolution when zooming in ~100 meter, Max range when zooming out ~2000km (a whole country scale).
...
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0answers
29 views
Drawing a deferred decal when the camera clips its bounding geometry
I have a building grid effect that I decal onto my terrain using a cube that moves to follow the cursor.
You can see if the camera gets too close to the cube, it gets clipped by the camera's near ...
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1answer
136 views
Ray casting through terrain mesh + Octree ( Mesh collision )
I'm currently in development of a terrain editor which i will use for my game. One thing that is partially stopping my development is that I don't have collision detection implemented between mouse ...
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0answers
93 views
Procedural terrain in the Style of “Zelda: A Link to the Past”
I am working to create a system that randomly generates pseudo-3d terrain on a tile grid using the methods used in the legend of zelda games between link to the past and minish cap.
I have created a ...
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0answers
36 views
Generating objects in Open Worlds
using Unity I have an open world (infinite) which is proceduraly generated in chunks.
In this world I want to proceduraly load objects/trees/grass by raycasting them around the player position and ...
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0answers
437 views
How to export a terrain from Unity to Blender?
I'm trying to make an environment for my scene that consists animations and other objects such as trees.
Making a terrain in Unity seem to be a lot easier than in Blender, so I want to export that ...
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1answer
205 views
“SetFloatImpl can only be called in the main thread.” What does this mean and how can I fix this?
I am trying to create procedurally generated terrain and I have a Default texture with some code for my terrain material. An error pops up saying that SetFloatImpl can only be called in the main ...
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203 views
Terrain deformation via mouse in real time using OpenGL
The main problem I’m facing is how I can, given a spot on a terrain mesh (x and z coordinates) change the mesh so that the surrounding points also change height but will be less affected. What’s ...
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44 views
Sea is higher than land when importing large real world terrain
I am trying to import some real world terrain into Unity with the help of Global Mapper. The data I am using is download from CGIAR SRTM(http://srtm.csi.cgiar.org/,http://srtm.csi.cgiar.org/srtmdata/)....
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Projecting grid textures to select parts of the terrain (Unity)
So I'm trying to be smart and not use 500+ some tile prefabs to make a grid, and so far the back-end portion has gone swimmingly. I initially used a dedicated mesh to represent the grid, but as I'm ...
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1answer
262 views
How to make many perlin noise function match
I am trying to create procedural terrain using Perlin noise here is what I have so far:
I create "Chunks" of a fixed size using a Perlin noise function, each chunk is a flat mesh (like a plane).
...
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1answer
303 views
Setting vertex colors for a marching cubes mesh
I am making a voxel based terrain system (Yes, I know, very original...), anyway...
Each voxel should have it's own color so the player can distinguish which type of material it is. For example: dirt ...
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46 views
2D Terrain Modification/Expansion?
I have a problem which I don't really know what to call, and I would like to apologize in advance for perhaps the misleading title. Let's say I break a few objects in the 2D game and they scatter ...
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1answer
58 views
Where can I find an accurate map of Earth for a real-time third-person game?
I want to create a game that will allow the player to move to any place on Earth. The game will not be first-person, but it will be possible to zoom in quite close nonetheless. What I am lacking is an ...
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1answer
186 views
Question about CDLOD quad tree
I have been digging and researching into CDLOD and there are some things I dont understand.
https://github.com/fstrugar/CDLOD/blob/master/cdlod_paper_latest.pdf states:
The quadtree structure is ...
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1answer
114 views
Performance problem with chunked LOD
I managed to create Zoomable planet. When I get closer to it the respective chunks are splitting and every split holds 4 x 16x16 grid (1024 verts). When getting closer the respective chunks split ...
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1answer
361 views
Generating lakes and rivers on 2D grid
I recently posted a question about how to technically represent a generated terrain similar to the game kingdoms and castles.
I got some great advice and decided to create a 1x1 cube at each ...
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0answers
76 views
Trying to Rotate terrain
I'm new to OpenGL and don't really know how to rotate a terrain. For my graphics class, I have a project I need to do that is making a tire using OpenGL and work that we done in class (my framework is ...
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209 views
Rendering detailed martian terrain for an RTS
I am trying to develop a RTS game that has:
Various planets
Each planet topology could vary between chock full of craters, to smooth hills and mountains planets
In sum each "biome" should be unique-...
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What's the most efficient way to create underground layers of procedural terrain?
Background information
I am in the process of making a game engine so I have complete, explicit control over everything, anything is an option. I desire to make procedurally generated 3D terrain. It'...
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how to make a seemingly endless backdrop in Unity
Potential solution at the bottom.
I have a rocket which flies straight up, as it gets higher you can see the edge of the terrain. I want the rocket to eventually leave the atmosphere and then the ...
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1answer
59 views
Derivatives usage in FBM core
So I learned now about derivatives and fbm, but can not figure out the effect of this code example (credits https://www.iquilezles.org/www/articles/morenoise/morenoise.htm, bottom of page):
...
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3answers
655 views
Recommended data structure for storage and fast access of infinite chunk-based heightmap terrain
I'm aiming to create a chunk based heightmap terrain in Unity.
I already have a basic multifractal simplex noise set up and working, able to generate heightfields and meshes at runtime... but only ...
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2answers
73 views
Capping neighbour height difference on heightmap?
I am generating a heightmap with some basic perlin noise but I need to cap the differences between each neighbouring value. A cardinal neighbour can only be ...
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1answer
898 views
Unity Seamless Terrain
I am programmatically generating terrain using unity's terrain object and assigning height maps to it via the terrainData, the problem is that there are seams even when using the GroupingId(which is ...
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Least expensive way to build a forest in Unity3D?
I'm a programmer with some experience in Unity. My objective is to make a game (or maybe just a virtual space you can walk around in First Person perspective) featuring a forest and to make it look as ...
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2answers
481 views
Mapping noise to sphere surface
I'm attempting to create a sphere with terrain (aka planet). I managed to procedurally create an icosahedron, and I am able to subdivide it (yay), but now I'm stuck on terrain.
My current idea was to ...
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LWJGL 3 - problem with flickering when rendering terrain with colors
For while now I m trying to built a terrain generator for my game engine and again I'm stuck with problem.
I'm trying to generate a terrain using colors, so no textures. In short my problem is ...
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3answers
151 views
How can I destroy trees when placing a building in an RTS?
I am developing RTS game. When I build buildings on the Terrain, any trees that were in that location end up intersecting with the building.
I want to remove all trees from the building's footprint ...
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6answers
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Procedurally generate regions on island
I currently have islands that look like this:
And I want to procedurally subdivide it into regions, like this:
What algorithm does what I'm looking for? Do you have suggestions on how to create ...
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1answer
170 views
How can I get old Minecraft style terrain biome selection?
I'm using this post as a reference for what I'm doing.
The real thing of interest is this:
As you can see, this is a Whittaker diagram, with temperature and rain considerations.
So would this be ...
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1answer
1k views
Procedurally generating non tile based top down 2d game worlds
I’ve been fascinated by procedural generation for over two years now. I have played around with many types of noise generation and even wrote some myself. I’ve been looking into water erosion and ...
