Questions tagged [visibility-determination]
Visibility Determination is the process of deciding whether there is a clear & unimpeded line of sight from one game entity or point in space to another.
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How do I make an object move to a certain location when the player looks at it?
I want to have an eyeball that when the player looks at, it disappears by moving to the side. Like in a horror game. I know how to make the object move to a set location but I don't know how I would ...
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How to implement 3D visibility checks with terrain occlusion in an RTS?
Some RTS games, for example games built on the Spring RTS engine, implement a visibility/detection system that checks both whether a hostile unit is within the detection range of a friendly unit, and ...
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Make Niagara System effect visible only on specific Render Target
I’m new to UE and don’t really know how to approach my problem, perhaps that’s why I couldn’t google a solution for it. So here’s what I want to achieve:
I need a Niagara System effect to be only ...
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Tiles on sphere - check visibility
I have a sphere with tiles. I need to check if a tile is visible or not. See the image. Tiles are red squares, "screen" is represented by yellow quad.
Currently, I calculate coordinates of ...
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Godot :How does the VisibilityEnabler work?
Visibility Enabler
I'm confused about the use of the Visibility enabler node in godot. I've read the documentation and tried it out both stand-alone and as a child without success.
I set the parent ...
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Find if one player is visible to the other
Two players (p1 and p2) are standing in a 3D space, represented by points (x1, y1, z1) and (x2, y2, z2). Player 2 is holding a light source, pointing in the direction given by a normalised vector (xn, ...
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Fastest visibility calculation towards all possible directions
I am searching for your advice. I have a massive voxelized model, like the one in the picture (but with a few million voxels more..). To reduce the total number of the model’s triangulations, I can ...
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In UE4's Blueprints, how do I activate something when the player looks at it?
I want to make an object that activates when the player presses a button, then looks at it. How can I do this using Blueprints Visual Scripting?
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Is there a more useful "inverse" alternative to portal rendering than antiportal rendering?
I'm in the process of sketching out the design of a 3D rendering engine as I'm learning my way around the subject. (Preemptively: yes, I have my reasons for rolling one from scratch, not least the ...
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Drawing visibility polygons in Unity (for vision cones with occlusion)
I'm currently trying to create an effect like the one displayed below in Unity:
However, it seems that I can't do this with any of Unity's built-in light objects, and I simply cannot find anything ...
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Partial mesh culling by checking against the AABB-tree of objects vertices instead of only the AABB of the whole objects
First thing: this is more of a conceptual question than an implementation oriented one, but still tips about implementation will be very much welcome if you happen to have any (athough I have some ...
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Storing visibility graph for path-finding: do redundant and non-visible pairs of points have to be saved?
Using C# in Unity, I have recently implemented an algorithm that determines during run-time the visibility graph of a given scene in my game project (visibility between corners of obstacles). Now I am ...
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How to implement visibility graph pathfinding in Unity/C# to detect paths (i.e. visibility connections) efficiently?
I am struggling with implementing continuous path-finding trough visibility graphs. Notice, I know that grids can be used even when movement is not trough grids (e.g. Theta*). But for my current needs,...
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Determine whether an object is 'visible' at a given distance automatically?
I am creating an environment using procedural content. To optimise performance, I am batching small meshes ahead of time. For efficiency's sake, I don't want to batch objects that make only an ...
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How do I optimize 2D visibility cone calculations?
I'm creating a simple 2D game and got a little bit stuck with a visibility cone algorithm, influenced by walls and other obstacles on the map.
The only issue I'm currently having, is that it's very ...
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How do I destroy a Unity prefab when it goes off-screen?
I made an infinite path using prefab.Path moving in the negative x direction. I want to destroy the path clone once it goes offscreen.
My path move script is:
<...
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How do I check whether a camera has unobstructed view of a GameObject?
I want to check if a GameObject is visible to the camera. The renderer.isVisible-method only checks if the camera is turned ...
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How can I quickly determine whether objects are onscreen in 2D?
Currently, I have this in each object's renderer's update method:
...
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How to determine the visibility of a single vertex, given a viewpoint?
I have a 3D triangle mesh, and I want to know, given a viewpoint (defined by a model, view and projection matrix), if a certain vertex is visible or not.
My approach was to render the mesh using ...
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Determining whether an object is in field of view considering obstacles
I'm thinking of stealth games where an object has a certain field of view that you want to avoid otherwise game over.
The field of view may be linear or circular or any arbitrary group of pixels/...
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Calculation: Is a sphere/square/plane visible from a certain point?
I'm searching for a way to detect if a form (shape can be changed if algorithm requires it) is visible from a single point in a 3D tile-based world. This should be used as some kind of wall-hack ...
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LWJGL Determining whether or not a polygon is on-screen
Not sure whether this is an LWJGL or math question. I want to check whether a shape is on-screen, so that I don't have to render it if it isn't. First of all, is there any simple way to do this that I ...
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