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add support for 3 mesh vertices - still not working

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in0finite 2022-03-05 03:50:26 +01:00
parent c99d4f6200
commit ee96efc1c3
1 changed files with 113 additions and 9 deletions
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122
Assets/Scripts/Behaviours/World/Water.cs
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@ -190,10 +190,14 @@ namespace SanAndreasUnity.Behaviours.World
m_collisionObjects.Clear();
var vertexes = new List<Vector3>();
var normals = new List<Vector3>();
var indexes = new List<int>();
int i = 0;
foreach (var face in faces)
{
// create box collider based on vertices
// create box/mesh collider based on vertexes
(Vector3 center, Vector3 size) = this.GetCenterAndSize(face);
@ -203,16 +207,54 @@ namespace SanAndreasUnity.Behaviours.World
go.name = $"Water collision {i}";
go.transform.localPosition = center.WithY(center.y - size.y * 0.5f);
go.transform.localPosition = center.WithAddedY(- size.y * 0.5f);
go.transform.localRotation = Quaternion.identity;
var boxCollider = go.GetComponentOrThrow<BoxCollider>();
boxCollider.size = size;
/*var meshCollider = go.GetComponentOrThrow<MeshCollider>();
if (meshCollider.sharedMesh != null && !EditorUtilityEx.IsAsset(meshCollider.sharedMesh))
var meshCollider = go.GetComponent<MeshCollider>();
if (meshCollider != null && meshCollider.sharedMesh != null && !EditorUtilityEx.IsAsset(meshCollider.sharedMesh))
F.DestroyEvenInEditMode(meshCollider.sharedMesh);
meshCollider.sharedMesh = mesh;*/
if (face.Vertices.Length == 4)
{
if (meshCollider != null)
F.DestroyEvenInEditMode(meshCollider);
var boxCollider = go.GetOrAddComponent<BoxCollider>();
boxCollider.size = size;
boxCollider.isTrigger = true;
}
else if (face.Vertices.Length == 3)
{
var boxCollider = go.GetComponent<BoxCollider>();
if (boxCollider != null)
F.DestroyEvenInEditMode(boxCollider);
meshCollider = go.GetOrAddComponent<MeshCollider>();
meshCollider.cookingOptions = MeshColliderCookingOptions.None;
meshCollider.isTrigger = true;
vertexes.Clear();
normals.Clear();
indexes.Clear();
CreateCollisionMeshFor3VertexFace(face, vertexes, normals, indexes, size.y);
// modify vertexes based on center of game object
Vector3 centerToSubstract = go.transform.localPosition;
for (int v = 0; v < vertexes.Count; v++)
vertexes[v] = vertexes[v] - centerToSubstract;
var mesh = new Mesh();
mesh.name = go.name;
mesh.SetVertices(vertexes);
mesh.SetNormals(normals);
mesh.SetIndices(indexes, MeshTopology.Triangles, 0, calculateBounds: true);
meshCollider.sharedMesh = mesh;
}
else
{
Debug.LogError($"Only water faces with 3 or 4 vertices are supported, found {face.Vertices.Length}");
}
if (m_createVisualsForCollisionObjects)
{
@ -220,7 +262,7 @@ namespace SanAndreasUnity.Behaviours.World
? go.transform.GetChild(0).gameObject
: GameObject.CreatePrimitive(PrimitiveType.Cube);
visualGo.name = "visualization cube";
Destroy(visualGo.GetComponent<BoxCollider>());
F.DestroyEvenInEditMode(visualGo.GetComponent<BoxCollider>());
visualGo.transform.SetParent(go.transform, false);
visualGo.transform.localPosition = Vector3.zero;
visualGo.transform.localRotation = Quaternion.identity;
@ -281,5 +323,67 @@ namespace SanAndreasUnity.Behaviours.World
indexes[indexesIndex++] = upRight;
indexes[indexesIndex++] = lowLeft;
}
void CreateCollisionMeshFor3VertexFace(
WaterFace face, List<Vector3> vertexes, List<Vector3> normals, List<int> indexes, float height)
{
if (face.Vertices.Length != 3)
throw new System.ArgumentException("Face must contain 3 vertices");
// create top triangle
int topSideVertexIndex = vertexes.Count;
CreateTriangle(face, vertexes, normals, indexes, 0f);
// create bottom triangle
int bottomSideVertexIndex = vertexes.Count;
CreateTriangle(face, vertexes, normals, indexes, -height);
// create side quads
int sideIndexesIndex = indexes.Count;
for (int i = 0; i < 3; i++)
{
int otherIndex = (i + 1) % 3;
// 2 top, 1 bottom
indexes.Add(topSideVertexIndex + i);
indexes.Add(topSideVertexIndex + otherIndex);
indexes.Add(bottomSideVertexIndex + i);
// 2 bottom, 1 top
indexes.Add(topSideVertexIndex + otherIndex);
indexes.Add(bottomSideVertexIndex + otherIndex);
indexes.Add(bottomSideVertexIndex + i);
}
// add side indexes in reverse - because we don't know direction of those triangles
for (int i = indexes.Count - 1; i >= sideIndexesIndex; i--)
{
indexes.Add(indexes[i]);
}
}
void CreateTriangle(
WaterFace face, List<Vector3> vertexes, List<Vector3> normals, List<int> indexes, float heightOffset)
{
if (face.Vertices.Length != 3)
throw new System.ArgumentException("Face must contain 3 vertices");
int vertexIndex = vertexes.Count;
for (int i = 0; i < 3; i++)
{
vertexes.Add(face.Vertices[i].Position.WithAddedY(heightOffset));
normals.Add(Vector3.up);
}
indexes.Add(vertexIndex);
indexes.Add(vertexIndex + 1);
indexes.Add(vertexIndex + 2);
// other side, because we don't know direction of this triangle
indexes.Add(vertexIndex + 2);
indexes.Add(vertexIndex + 1);
indexes.Add(vertexIndex);
}
}
}