Questions tagged [vector]
A mathematical concept that can be used to express position, direction or velocity and which can simplify or outright trivialise spatial problems.
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transform.localPosition does not wok in Unity
When im breaking fence GameObject there should pop up scores, so it works fine. But position of pop up scores is too low, im trying to raise it by ...
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1answer
192 views
Smoothing multiple combined vector translations
I am currently working on my arm/weapon rig for an fps game written in a custom engine. I am to the point where I am implementing the movement of the arms/weapon (hereby referred to as weapon), for ...
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How to convert local location to global location given orientation?
I'm working with Unreal Engine and I've come across a scenario where I have a location vector point in local coordinates and I need to transform it to global ...
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1answer
26 views
confusion with Mathf.MoveTowardsAngle being in the Update method
I've got some code that looks like this:
...
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37 views
Pygame : having trouble with implementing movement with vectors
I've been struggling a lot to learn how to use vectors in programming. Now I've successfully made my own vector class but I still can't use vectors for movement.
This is my class :
...
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1answer
27 views
Given a set of points with color values, finding a gradated color value from a given position
I guess the verb form of gradient is "gradate" and not "gradiate"?
Hi! I have a set of 2D points (actually 3D, but we can ignore the Y axis unless it's trivial) bound to color ...
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1answer
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How can I "zero out" velocity in an arbitrary direction?
I'm currently running into an issue with my character controller using physics-based movement of rigidbodies in Unity.
Here's an illustration of the issue I'm facing:
Basically, after a jump, my ...
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1answer
28 views
Calculating world position with parent and child transform with translation and rotation
I have two Quaternion transforms, and a viewmatrix. These are custom transforms made by Dice, and I'm working on some custom modding for an older version of Battlefield.
Now, I don't have the entire ...
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1answer
30 views
desired velocity and the local space z axis
This question is related to my previous post here , but, even though I did get some insight, I didn't fully get it, and hence have another dilemma. Since the dead earth series is not publicly ...
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1answer
45 views
using a starting and ending point, how can i find how far in-between those two points a third point is?
quick diagram to explain what i mean. i have a start and an end, the third point can be anywhere in space, but i need to calculate from 0-1 how far they are in-between these two points.
The points are ...
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1answer
85 views
Confirming whether a user has drawn a character correctly
This is a follow-up post to this post: How can I check if a player-drawn line follows a path?. I'm having difficulty implementing the said feature and I believe it's because of a lack of math ...
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1answer
46 views
3D AxisAngle spins at 180 degrees
I am using the Axis Angle technique on objects so that they are oriented away from a planet surface like in Super Mario Galaxy. I am using two unit vectors [0,1,0] and a normal vector from the planet. ...
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how to make an axis from one gameobject the same as the axis from another gameobject
I am making a third person script in unity and I want it so that when you aren't moving you can pan around the player and when you are moving the player faces in the opposite direction to the camera ...
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3k views
What are some good examples of the practical usages of cross product in game development?
I know how to calculate cross product, and know that the cross product of 2 vectors is a third vector that is perpendicular to a plane created by the first 2 vectors.
However, I have not seen any good ...
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Rear Propulsion Steering Spline, or what is this called?
What I am looking for is essentially to know what this is, or what I can google to learn how to do it... unless of course the solution is simple.
You have an object at the start position facing a ...
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1answer
93 views
check if joystick magnitude is increasing
I use joystick mechanic. What I want to do is:
Translating my object forward when my joystickInput.magnitude is increasing.
Translating backward when my ...
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2answers
106 views
In a 3D grid of cubes, how to calculate index of a cube if we only know it's coordinates and the way cubes are generated?
I have a code that generates a grid of equally sized cubes in a cubic volume of given limited size, intended to be used for 3d path finding. Let's say cubes are objects stored in an array called ...
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25 views
Why aren't my Vector3 comparing correctly?
I have a machine and a I want to check if I can place a conveyor at its connexion point. I do it by checking if the machine is at the expected Input position of the conveyor and if the conveyor is at ...
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1answer
417 views
Get a Vector2 Based on Object Rotation in Unity
I feel like there is an obvious answer to this but I can't find it. Is there a function in unity that gives you a Vector2 (or 3) based on the rotation of an object.
for example:
z rotation = 0 ---> ...
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1answer
32 views
How to check if a point is on the plane given bottom-right point, top-left point, normal and the quaternion rotation of the plane
I know the world positions of A and B.
We are also given the vector normal and the quaternion rotation of the plane
How do I check if a point lies on the plane?
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58 views
Swept AABB vs Line Segment in 2D
I've been trying to get a swept collision detection up and running now for almost a week and I can't for the life of me get it working.
There is a answer on this linked here below:
Swept AABB vs Line ...
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1answer
47 views
What does a Vector3 state?
I'm really stucked. I couldn't understand what does Vector3 state.
When I look Unity Vector3 documentation it says
Representation of 3D vectors and points.
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29 views
How to check if a particular vector is pointing at X-Y plane or Y-Z plane
As you can observe from the diagram,
Vector A is pointing at the Y-Z plane and Vector B is pointing at X-Y plane.
Is this possible to find? Am I missing some logic or concept?
EDIT:
Suppose, Vector B ...
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2answers
50 views
Given its direction, and another vector that begins at the same point, how can I find the magnitude of that vector using only vector math?
I've solved this using the law of sines, but I was wondering if there's a way to do this with just vector math.
Here's a diagram that will hopefully help illustrate what I'm trying to do:
Given ...
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1answer
28 views
Measure a distance point to point in unity3D?
I tried to measure a distance point to point on my phone screen by using following code
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29 views
How to follow an object with the player without stepping out the waypoint line Unity3D?
How to follow an object with the player without stepping out the waypoint line? I added four waypoints with a debug.line and tried doing some simple waypoint mechanic. I wanted the object to move from ...
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1answer
80 views
Is speed and direction generally combined into one vector, or separated into two?
Couldn't find this answered already, surprisingly.
For example, for a game (in my case a 2D top-down one), there could be advantages to doing so. For example, whenever you want to change an entity's ...
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1answer
111 views
How to perform a sliding collision between a square and a circle?
Please point me to the duplicate if this has been asked before. I couldn't find it.
Basically, I am creating a 2d top-down game where the player is represented by a circle, and the tiles are ...
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1answer
117 views
Transforming Vector3 points to Vector2
I'm trying to convert a list of Vector3 on Vector2 because I need to put them in a graph like this:
The graph is easy to do having the Vector2 list, but I have a non-trivial problem obtaining the ...
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1answer
58 views
Make movement speed relative to player character rotation in Unity?
I'm doing a strict topdown 2D game where the character looks at wherever the mouse is pointing (same perspective as GTA 2 or Darkwood) . I want to make movement speed for strafing and backing up ...
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1answer
551 views
How to calculate the Forward, Up, Right vectors using the rotation angles?
As the title says, I have the pitch and the yaw of an object, How do i use them to calculate the forward, up, right vectors (like the ones in unity), I've searched everywhere and only could find the ...
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1answer
42 views
How do I get my fish to face the right way?
I'm making this 2d collecting game in Unity where you collect fish. However I can't get them to face the direction they are going. I've asked on some Discords and got no answer. Thanks in advance.
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1answer
31 views
Move vector A to vector B but stop X distance before reaching vector B and always be in front
I believe this is basic vector math, but I'm struggling with it.
I have 2 objects (3D space, x, y, z), A (weapon) and B (camera). I want to move A to B's location, but then offset A from B so that it ...
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1answer
46 views
How to get all tiles along a straight vector path?
Let's say I have a 100x100 map of tiles where each tile is 16x16 pixels.
How would I get all tiles along a path? For example, let's say I wanted to get a list of all tiles along the shortest direct ...
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44 views
Where to store polygons and polygon animation?
I thought about making something with ApeOut graphics long before it came out and its release motivated me to try - I'm having tons of fun but I stumbled upon a pickle.
I can imagine storing polygons ...
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1answer
46 views
Find position in arc depending on the direction of the agent
So what I am trying to do is to find a random point on the (green") arc around the enemy:
Sorry for the bad drawing but
Red (no go)
Green ( Points the allied can go to)
I know that unity has ...
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19 views
Unable to get accurate y position on terrain to spawn object
all I am trying to spawn some crabbies and can't seem to get an accurate y height to spawn.
I have a terrain created with GAIA Pro 2 and have tried a few things to get an accurate y value. When trying ...
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22 views
Efficient way to compare vectorial direction?
I have a bunch of random vectors representing a direction and four other vectors that we can distinguish with their pyramidal arrows at their extremity, they represent a boundary
what i'd like to do ...
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28 views
User input scheme of 2d vector field on a 2d plane for navigation
I want to create a strategy game based on distributions of "units" which can be moved around and attack each other.
By distribution of units i mean that i don't have any discrete units ...
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0answers
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Moving Object Interception / Projectile Collision [duplicate]
I am using Unity to attempt to have missile A launch at incoming missile B and blow it up.
However in order to do this accurately, A must be able to take into account B's current velocity, direction ...
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2answers
156 views
How do i put random velocity in a Vector2?
I'm very new to C# scripting.
I want to use a random velocity for my Enemies using Vector2. Here's the code that I have done at the moment:
...
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1answer
212 views
How do I procedurally generate rivers on a tilemap with thickness?
I have read numerous articles on the subject but can find none that can explain to me how it is that procedural river generation achieves a certain amount of thickness to the river. I have managed to ...
2
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1answer
123 views
Trying to understand 3D transforms by making an aircraft control script. How would you implement 3D transforms correctly in this example?
I'm struggling to understand 3D transforms in Godot. (I know, I know...)
I'm trying my best to implement an aircraft control script, and I've gotten myself into gimbal lock hell. My controls work ...
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2answers
211 views
When are oblique triangles used in game development?
I'm working on a project that explains how trigonometry is used in video games, and I need to mention oblique triangles.
However, as far as I know, only right triangle diagrams are used in video games ...
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1answer
111 views
How to convert relative position of child to parent into an absolute position?
I am modifying a game that stores object positions with a 3d vector { x, y, z } and rotation as a 3d vector with degree angles ...
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1answer
105 views
How to rotate velocity Vector3 to always point the same direction so that it can be applied to 2d blendtree?
Given two variables, a Vector3 representing body velocity and a Quaternion representing body's local rotation, how could I normalize the velocity vector so that it's always oriented towards the ...
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2answers
205 views
Rotating towards a target in top-down 2D game
I use the following code to rotate a transform towards another. And it's working fine. However, I want to lerp it over time period.
...
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1answer
684 views
Jump script using AddForce not working
I am making a simple jump script by adding a separate script to the character.
I got the character from the Asset Store and I have left it untouched. I have searched the solution and similar problems ...
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1answer
81 views
How to calculate the dot product between the input direction and a character with root motion?
I need to calculate the dot product between my character movement direction and the input being pressed by the player. When the character movement was being controlled only by code, I was using ...
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2answers
32 views
Math: determining a proper procedural vector for sine-movement
My Problem
Suppose you have an object moving along the x-axis, wobbling up and down. Movement code might look like this:
x += 1;
y = Sin(x);
Move((x,y) * speed);
...