koobas.hobune.stream
how to get two script edited mesh colliders to collide.
I know this is asked a lot, but none of the other answers fixed my problem. this is the script of the terrain:
using UnityEngine; using System.Collections; using System.Collections.Generic;
public class PolygonGenerator : MonoBehaviour {
public List<Vector3> newVertices = new List<Vector3>();
public List<int> newTriangles = new List<int>();
public List<Vector2> newUV = new List<Vector2>();
public List<Vector3> colVertices = new List<Vector3>();
public List<int> colTriangles = new List<int>();
private int colCount;
private Mesh mesh;
private MeshCollider col;
private float tUnit = 0.25f;
public Vector2 tStone = new Vector2 (0f,0f);
public Vector2 tGrass = new Vector2 (0f,.5f);
public byte[,] blocks;
private int squareCount;
public bool update=false;
// Use this for initialization
void Start () {
mesh = GetComponent<MeshFilter> ().mesh;
col = GetComponent<MeshCollider> ();
GenTerrain();
BuildMesh();
UpdateMesh();
}
void Update(){
if(update){
BuildMesh();
UpdateMesh();
update=false;
}
}
int NoiseInt (int x, int y, float scale, float mag, float exp){
return (int) (Mathf.Pow ((Mathf.PerlinNoise(x/scale,y/scale)*mag),(exp) ));
}
void GenTerrain(){
blocks=new byte[96,128];
for(int px=0;px<blocks.GetLength(0);px++){
int stone= NoiseInt(px,0, 80,15,1);
stone+= NoiseInt(px,0, 50,30,1);
stone+= NoiseInt(px,0, 10,10,1);
stone+=75;
int dirt = NoiseInt(px,0, 100f,35,1);
dirt+= NoiseInt(px,100, 50,30,1);
dirt+=75;
for(int py=0;py<blocks.GetLength(1);py++){
if(py<stone){
blocks[px, py]=1;
if(NoiseInt(px,py,12,16,1)>10){ //dirt spots
blocks[px,py]=2;
}
if(NoiseInt(px,py*2,16,14,1)>10){ //Caves
blocks[px,py]=0;
}
} else if(py<dirt) {
blocks[px,py]=2;
}
}
}
}
void BuildMesh(){
for(int px=0;px<blocks.GetLength(0);px++){
for(int py=0;py<blocks.GetLength(1);py++){
if(blocks[px,py]!=0){
GenCollider(px,py);
if(blocks[px,py]==1){
GenSquare(px,py,tStone);
} else if(blocks[px,py]==2){
GenSquare(px,py,tGrass);
}
}
}
}
}
byte Block (int x, int y){
if(x==-1 || x==blocks.GetLength(0) || y==-1 || y==blocks.GetLength(1)){
return (byte)1;
}
return blocks[x,y];
}
void GenCollider(int x, int y){
//Top
if(Block(x,y+1)==0){
colVertices.Add( new Vector3 (x , y , 1));
colVertices.Add( new Vector3 (x + 1 , y , 1));
colVertices.Add( new Vector3 (x + 1 , y , 0 ));
colVertices.Add( new Vector3 (x , y , 0 ));
ColliderTriangles();
colCount++;
}
//bot
if(Block(x,y-1)==0){
colVertices.Add( new Vector3 (x , y -1 , 0));
colVertices.Add( new Vector3 (x + 1 , y -1 , 0));
colVertices.Add( new Vector3 (x + 1 , y -1 , 1 ));
colVertices.Add( new Vector3 (x , y -1 , 1 ));
ColliderTriangles();
colCount++;
}
//left
if(Block(x-1,y)==0){
colVertices.Add( new Vector3 (x , y -1 , 1));
colVertices.Add( new Vector3 (x , y , 1));
colVertices.Add( new Vector3 (x , y , 0 ));
colVertices.Add( new Vector3 (x , y -1 , 0 ));
ColliderTriangles();
colCount++;
}
//right
if(Block(x+1,y)==0){
colVertices.Add( new Vector3 (x +1 , y , 1));
colVertices.Add( new Vector3 (x +1 , y -1 , 1));
colVertices.Add( new Vector3 (x +1 , y -1 , 0 ));
colVertices.Add( new Vector3 (x +1 , y , 0 ));
ColliderTriangles();
colCount++;
}
}
void ColliderTriangles(){
colTriangles.Add(colCount*4);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+2);
colTriangles.Add((colCount*4)+3);
}
void GenSquare(int x, int y, Vector2 texture){
newVertices.Add( new Vector3 (x , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y-1 , 0 ));
newVertices.Add( new Vector3 (x , y-1 , 0 ));
newTriangles.Add(squareCount*4);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+3);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+2);
newTriangles.Add((squareCount*4)+3);
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y + tUnit));
newUV.Add(new Vector2 (tUnit * texture.x + tUnit, tUnit * texture.y + tUnit));
newUV.Add(new Vector2 (tUnit * texture.x + tUnit, tUnit * texture.y));
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y));
squareCount++;
}
void UpdateMesh () {
mesh.Clear ();
mesh.vertices = newVertices.ToArray();
mesh.triangles = newTriangles.ToArray();
mesh.uv = newUV.ToArray();
mesh.Optimize ();
mesh.RecalculateNormals ();
newVertices.Clear();
newTriangles.Clear();
newUV.Clear();
squareCount=0;
Mesh newMesh = new Mesh();
newMesh.vertices = colVertices.ToArray();
newMesh.triangles = colTriangles.ToArray();
col.sharedMesh= newMesh;
colVertices.Clear();
colTriangles.Clear();
colCount=0;
}
} and this is the script for the object that needs to collide with the terrain:
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
public class vehicle : MonoBehaviour {
public List<Vector3> newVertices = new List<Vector3>();
public List<int> newTriangles = new List<int>();
public List<Vector2> newUV = new List<Vector2>();
public List<Vector3> colVertices = new List<Vector3>();
public List<int> colTriangles = new List<int>();
private int colCount;
private Mesh mesh;
private MeshCollider col;
private float tUnit = 0.25f;
public Vector2 tStone = new Vector2 (0f,0f);
public Vector2 tGrass = new Vector2 (0f,.5f);
public byte[,] blocks;
private int squareCount;
public bool update=false;
// Use this for initialization
void Start () {
mesh = GetComponent<MeshFilter> ().mesh;
col = GetComponent<MeshCollider> ();
GenTerrain();
BuildMesh();
UpdateMesh();
rigidbody.inertiaTensor = Vector3.one;
rigidbody.inertiaTensorRotation = Quaternion.identity;
}
void Update(){
if(update){
BuildMesh();
UpdateMesh();
update=false;
}
}
int NoiseInt (int x, int y, float scale, float mag, float exp){
return (int) (Mathf.Pow ((Mathf.PerlinNoise(x/scale,y/scale)*mag),(exp) ));
}
void GenTerrain(){
blocks=new byte[1,1];
for(int px=0;px<blocks.GetLength(0);px++){
int stone= NoiseInt(px,0, 80,15,1);
stone+= NoiseInt(px,0, 50,30,1);
stone+= NoiseInt(px,0, 10,10,1);
stone+=75;
int dirt = NoiseInt(px,0, 100f,35,1);
dirt+= NoiseInt(px,100, 50,30,1);
dirt+=75;
for(int py=0;py<blocks.GetLength(1);py++){
if(py<stone){
blocks[px, py]=1;
if(NoiseInt(px,py,12,16,1)>10){ //dirt spots
blocks[px,py]=2;
}
if(NoiseInt(px,py*2,16,14,1)>10){ //Caves
blocks[px,py]=0;
}
} else if(py<dirt) {
blocks[px,py]=2;
}
}
}
}
void BuildMesh(){
for(int px=0;px<blocks.GetLength(0);px++){
for(int py=0;py<blocks.GetLength(1);py++){
if(blocks[px,py]!=0){
GenCollider(px,py);
if(blocks[px,py]==1){
GenSquare(px,py,tStone);
} else if(blocks[px,py]==2){
GenSquare(px,py,tGrass);
}
}
}
}
}
byte Block (int x, int y){
if(x==-1 || x==blocks.GetLength(0) || y==-1 || y==blocks.GetLength(1)){
return (byte)1;
}
return blocks[x,y];
}
void GenCollider(int x, int y){
//Top
if(Block(x,y+1) ==1){
colVertices.Add( new Vector3 (x , y , 1));
colVertices.Add( new Vector3 (x + 1 , y , 1));
colVertices.Add( new Vector3 (x + 1 , y , 0 ));
colVertices.Add( new Vector3 (x , y , 0 ));
colVertices.Add( new Vector3 (x , y-1 , 1));
colVertices.Add( new Vector3 (x + 1 , y-1 , 1));
colVertices.Add( new Vector3 (x + 1 , y-1 , 0 ));
colVertices.Add( new Vector3 (x , y-1 , 0 ));
ColliderTriangles();
colCount++;
}
//bot
if(Block(x,y-1)==0){
colVertices.Add( new Vector3 (x , y -1 , 0));
colVertices.Add( new Vector3 (x + 1 , y -1 , 0));
colVertices.Add( new Vector3 (x + 1 , y -1 , 1 ));
colVertices.Add( new Vector3 (x , y -1 , 1 ));
ColliderTriangles();
colCount++;
}
//left
if(Block(x-1,y)==0){
colVertices.Add( new Vector3 (x , y -1 , 1));
colVertices.Add( new Vector3 (x , y , 1));
colVertices.Add( new Vector3 (x , y , 0 ));
colVertices.Add( new Vector3 (x , y -1 , 0 ));
ColliderTriangles();
colCount++;
}
//right
if(Block(x+1,y)==0){
colVertices.Add( new Vector3 (x +1 , y , 1));
colVertices.Add( new Vector3 (x +1 , y -1 , 1));
colVertices.Add( new Vector3 (x +1 , y -1 , 0 ));
colVertices.Add( new Vector3 (x +1 , y , 0 ));
ColliderTriangles();
colCount++;
}
}
void ColliderTriangles(){
colTriangles.Add(colCount*4);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+2);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+0);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+7);
colTriangles.Add((colCount*4)+0);
colTriangles.Add((colCount*4)+4);
colTriangles.Add((colCount*4)+7);
colTriangles.Add((colCount*4)+4);
colTriangles.Add((colCount*4)+6);
colTriangles.Add((colCount*4)+7);
colTriangles.Add((colCount*4)+4);
colTriangles.Add((colCount*4)+5);
colTriangles.Add((colCount*4)+6);
colTriangles.Add((colCount*4)+0);
colTriangles.Add((colCount*4)+4);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+4);
colTriangles.Add((colCount*4)+5);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+5);
colTriangles.Add((colCount*4)+6);
colTriangles.Add((colCount*4)+2);
colTriangles.Add((colCount*4)+5);
colTriangles.Add((colCount*4)+1);
colTriangles.Add((colCount*4)+2);
colTriangles.Add((colCount*4)+6);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+2);
colTriangles.Add((colCount*4)+6);
colTriangles.Add((colCount*4)+3);
colTriangles.Add((colCount*4)+7);
}
void GenSquare(int x, int y, Vector2 texture){
newVertices.Add( new Vector3 (x , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y , 0 ));
newVertices.Add( new Vector3 (x + 1 , y-1 , 0 ));
newVertices.Add( new Vector3 (x , y-1 , 0 ));
newTriangles.Add(squareCount*4);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+3);
newTriangles.Add((squareCount*4)+1);
newTriangles.Add((squareCount*4)+2);
newTriangles.Add((squareCount*4)+3);
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y + tUnit));
newUV.Add(new Vector2 (tUnit * texture.x + tUnit, tUnit * texture.y + tUnit));
newUV.Add(new Vector2 (tUnit * texture.x + tUnit, tUnit * texture.y));
newUV.Add(new Vector2 (tUnit * texture.x, tUnit * texture.y));
squareCount++;
}
void UpdateMesh () {
mesh.Clear ();
mesh.vertices = newVertices.ToArray();
mesh.triangles = newTriangles.ToArray();
mesh.uv = newUV.ToArray();
mesh.Optimize ();
mesh.RecalculateNormals ();
newVertices.Clear();
newTriangles.Clear();
newUV.Clear();
squareCount=0;
Mesh newMesh = new Mesh();
newMesh.vertices = colVertices.ToArray();
newMesh.triangles = colTriangles.ToArray();
col.sharedMesh= newMesh;
colVertices.Clear();
colTriangles.Clear();
colCount=0;
}
}
Every time i run the game, it gives me the error: Actor::updateMassFromShapes: Compute mesh inertia tensor failed for one of the actor's mesh shapes! Please change mesh geometry or supply a tensor manually!
and:
Actor::updateMassFromShapes: Compute mesh inertia tensor failed for one of the actor's mesh shapes! Please change mesh geometry or supply a tensor manually! UnityEngine.MeshCollider:set_sharedMesh(Mesh) vehicle:UpdateMesh() (at Assets/scripts/vehicle.cs:269) vehicle:Start() (at Assets/scripts/vehicle.cs:35)
this is important since its the core feature of the game.
edit: I did try making the colliders for each box a rectangular prism, but it didn't fix the error:(
