I am currently working in a Unity 3D project (in version 5.0.1 to be precise) in which the character can walk in different-shaped planets without falling. So it is always attracted by the planets gravity (similar mechanic to the Super Mario Galaxy games).
Now, the problem is when I try to code the AI for the enemies. This AI should be pretty much simple, but because of this thing that I have with the planets shapes, I haven't been able to come up with a solution. The enemy should check where the player is and move ahead to its position. It's a really dumb enemy. But the thing is, that the enemy must be able to track the player and get to its position no matter what planet he is in. So, if the planet is circular, I cannot make the enemy look at the player and then move forward, as I would do in a plane planet.
I have already tried using a NavMesh, but Unity doesn't want to collaborate and ends up making a NavMesh of 1/3 of the planet. I don't understand why. I have tried changing every single parameter of the NavMesh baking but I haven't succeeded.
Another problem that I would like to do is: ¿How would you make a player be able to walk on the surface of any planet, no matter what its shape, in a smooth way while using a Mesh Collider? I am currently achieving this by getting the planet's normal with a raycast, rotating the player so that the Y axis is perpendicular to the normal and applying a force in -Y to simulate gravity. But this brings lots of problems when I implement the Mesh Collider. It results in a jittery effect. But, when I use a primitive collider from Unity, it works fine...
Anyway. What I need the most now is the answer to the AI question. The other one is kinda like a plus.
P.S: It doesn't matter if the solution is in Javascript. I can then translate it to C# :)
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So I have a game that I'm working on and its a simple platformer kind of like mario bros, I have a simple physics engine to move the player (Things like gravity e.t.c), But I have no idea how I would go about stopping an objects movement on collision, the best I've managed to do is to stop all movement if it collides with an object, but it is still left intersecting the object and can not move at all as the movement script is just turned off at that point.
Any help with the theory or snippets of code would be appreciated :)
Currently I'm working on a 2D game with destructible terrain in unity. It works great! Except for one thing.... collision generation... Since the terrain is destructible, I have to generate collisions on the go. I tried and it's awful performance. From 1000 fps from editing the terrain to 1 fps when I enable collisions generation. This is a huge issue and I know it's possible within unity because this guy :
https://forum.unity.com/threads/wip-nimbatus.221798/
created it with collisions as well. I tried contacting him but no response yet! Any of you guys have any ides on what I can do? Thanks!
I found a rather annoying but working solution to the issue. So basically what was wrong was I was setting points as vertices. The guy I messaged told me that at the time when he made his game, the 2D engine wasn't a thing in unity so he was forced to use regular 3D components. I didn't want to do this because it would possibly limit what I can do with 2D packages since I am not using the 2D engine. But in the end I decided that unless I could find a extremely fast edge finding algorithm that supported concave meshes WITH holes, I would need to just use the regular Unity3D MeshCollider component. I'm not sure why I was having an issue with the Polygon collider as I thought it would work the same as the MeshCollider but in 2D. I think the issue was I was setting the path of the Polygon Collider as each vertice. This is wrong because I think I would need to set the edge vertices only. (My mesh does not share vertices so I'm not sure how to find the edges) Of course I could re write it to share vertices but I think I will be find with the 3D components (For now at least)
I'm currently developing a game with unity3d (2019.3 version).
My problem actually, is that I don't know how to make two colliders don't collide with each other, but still be able to interact.
Okay, let's have an example.
Let's say that I have a zombie and a player, I want the player going through the zombie, but i want the collider of the player able of being detected by the one on the zombie, so the the zombie can attack the player, same for the bullets that the player shoot on the player. (little precision, the zombie attack the player thanks to a trigger collider in front of him).
I've already tried to modify things in the layer collision matrix, but the player and zombie aren't able to interact. So that's not good.
If you want the colliders to detect eachother but not collide then you should probably set one of the colliders to be a trigger.
Just check the Is Trigger checkbox and that should help you achieve the desired result.
Anyone know how to use Goblin XNA to implement ball control in the same way as one might find in the board game labyrinth?
There don't appear to be any tutorials or information at all regarding how to do this, despite there being a demo video displaying just such a thing.
I've setup the environment and gravity and added the ground and a sphere. I use WorldTransformation.Decompose to extract the current orientation of the board. I know the next step will be either ApplyLinearVelocity or AddForce to the sphere based on the current board orientation, but I don't know how to constantly apply these methods to the ball so that the ball is moving in response to the movement of the ball. Adding code to the Draw or Update methods only executes the code a single time. Anyone familiar with Goblin XNA at all and able to help?
As far as I can see in Goblin XNA the Update and Draw methods are called the same way as standard XNA games. Can you give more specific information? source code perhaps?
I have drawn tiles in my XNA game and loaded my character. My character, however, doesn't move- the map does, which gives it the illusion of movement. Now I am wondering how to actually test against them for collision. I mean, where does the collision code go and how do I make all tiles represent 'one big thing'?
There's a tutorial on pixel based collision detection on XNA Creator's club. You'll need to figure out what objects you want to do collision detection on. I guess you want the character to move across the tiled background, so you don't want to check for collision between your character and the background. Instead you should make any obstacle s sprites and do collision detection on those.
You might have a look at Nick Gravelyn's Tile Engine Tutorials, it goes through the whole process of creating a tile engine. There's a link here to see all the tutorials on YouTube.
You could have a look at the Platformer Starter Kit, it shows how to organize tiles in a map and check for collisions.
Rectangles have a intersects method. If your player is centered and you know the coordinates, loop through the other texture2ds and check for an intersection before scrolling the map.