Hello all,
I have a script creating a custom mesh as FOV around my charakter in a specific distance. if colliding with something, the mash will be interrupted* and created up until this obstacle but not behind. In total this should behave like the FOV in “Desperados” but 360°.
Actually this works, i have added a mesh renderer to visualize the result and i can see a wonderfull purple circle arround my charakter and is updating and moving with my movement of the charakter.
in addition i added some code for the interruption as described but the raycast which should help me there is not colliding with any obstacle i add to the scene. raycast hit.collider is always NULL.
I looked arround in the internet and even my own code. The main error cases explained in the internet are that other programmers should as solution add a collider to the obstacles but this was already done back in my own code. I even played arround with layermasks and added different layer to the different obstacles with collider.
As in my picture you can see:
- the circle (purple) successfully was created around my character and is updated in every frame
- white cylinders arround the map (with colliders)
My expectations:
- seen from my character behind the white obstacles carved the purple circle because the raycast in code example down marked with → //casting ray // casting ray end ←
- after raycast casted → vertex = hits[0].point ← should return the point of the first collision, in my example the collision with the white obstacles (which all have colliders) , and creating the mesh only until the white obstacle, not further
What i tryed:
- added the layermask property
- tryed Raycast instead of RaycastAll
- added different layers to all the obstacles, all obstacles in my picture have different layers
- changed layer of player
i don’t know where im blind here. Unbelievable the same method works differnt in other places of my project.
private void Start()
{
mesh = new Mesh();
GetComponent<MeshFilter>().mesh = mesh; // -> creating custom mesh
origin = Vector3.zero + highFromOrigin; // -> adding some high so it is at middle high of my character
verticies = new Vector3[rayCount + 2];
uv = new Vector2[verticies.Length];
triangles = new int[rayCount * 3];
verticies[0] = Vector3.zero;
verticies[1] = new Vector3(50, 0);
verticies[2] = new Vector3(0, -50);
triangles[0] = 0;
triangles[1] = 1;
triangles[2] = 2;
}
public void calcFOV(float viewDistance)
{
float angle = startInAngle;
float angleIncrease = fov / rayCount;
verticies[0] = origin;
int vertexIndex = 1;
int triangleIndex = 0;
for (int i = 0; i <= rayCount; i++)
{
Vector3 direction = GetVectorFromAngle(angle); // -> making a vector out of an angle
Vector3 vertex;
// casting ray:
RaycastHit[] hits = Physics.RaycastAll(origin, direction, viewDistance);
if (hits.Length == 0) // -> always null
{
Debug.Log("lol"); // -> debug
vertex = origin + direction * viewDistance;
}
else
{
vertex = hits[0].point; // never comes here
} // casting ray end
verticies[vertexIndex] = vertex;
if(i > 0)
{
triangles[triangleIndex + 0] = 0;
triangles[triangleIndex + 1] = vertexIndex - 1;
triangles[triangleIndex + 2] = vertexIndex;
triangleIndex += 3;
}
vertexIndex++;
angle -= angleIncrease;
}
mesh.vertices = verticies;
mesh.uv = uv;
mesh.triangles = triangles;
}
public static Vector3 GetVectorFromAngle(float angle)
{
float angleRad = angle * (Mathf.PI / 180f);
return new Vector3(Mathf.Cos(angleRad), 0, Mathf.Sin(angleRad));
}
