//Start new AI and create a equivalent struct
void StartAI(int i)
{
Vector3 randomPosition = new Vector3(Random.Range(-terrainDistance, terrainDistance), 1.0f, Random.Range(-terrainDistance, terrainDistance));
listOfAiObjects[i] = (GameObject)Instantiate(prefabGameObject);
listOfAiObjects[i].transform.position = randomPosition;
listOfAiStructs[i] = new aiStruct(randomPosition, Vector3.zero);
}
//Helps struct rotate via LERP, checks if we are looking at the new position
//We round with a precision variable to create a proper interpolation
public bool isLookingAt(float p, aiStruct automat)
{
Vector3 randomPos = automat.randomPos;
Vector3 autDir = Vector3.Normalize(automat.dir);
autDir = new Vector3(Mathf.Round(autDir.x * p) / p, Mathf.Round(autDir.y * p) / p, Mathf.Round(autDir.z * p) / p);
Vector3 direction = Vector3.Normalize(randomPos - automat.pos);
direction = new Vector3(Mathf.Round(direction.x * p) / p, Mathf.Round(direction.y * p) / p, Mathf.Round(direction.z * p) / p);
return(direction == autDir);
}
//For generating new positions for our struct
aiStruct updateStruct(aiStruct automat)
{
RaycastHit hit;
//If we reached our destination, create new target position
if ((automat.pos - automat.randomPos).magnitude <= 0.2f || automat.randomPos == Vector3.zero)
{
automat.randomPos = new Vector3(Random.Range(-terrainDistance, terrainDistance), automat.pos.y, Random.Range(-terrainDistance, terrainDistance));
//If this created position hits an obstacle, stay where we are
if (Physics.Raycast(automat.pos, automat.randomPos - automat.pos, out hit, 20, -1))
{
automat.randomPos = automat.pos;
return(automat);
}
}
Vector3 randomPos = automat.randomPos;
//If poisition inside the terrain
if (isInside(randomPos, terrainDistance))
{
Vector3 randir = (randomPos - automat.pos).normalized;
//Are we looking at the new target position?
if ((automat.dir - randir).magnitude > 0.05f)
{
//If no, interpolate till we looking at it
automat.dir = Vector3.Lerp(automat.dir, randir, 0.2f).normalized;
}
else
{
//If yes, move towards that position
automat.pos += automat.dir * forwardVel * Time.deltaTime;
}
}
else
{
automat.randomPos = automat.pos;
}
return(automat);
}
//Used to check whether a GameObject AI is on the field of view of our camera
void manageRendering()
{
for (int i = 0; i < listOfAiObjects.Length; i++)
{
//We turn our AI position into a Viewport point,
//If the x,y elements of this point are between 0 and 1
//and the y between 0 and 50 (Basically the far and near planes)
//means that this point is on the field of view of the camera
Vector3 pointOnScreen;
bool isInsideSphere;
//Is the AI GameObject is the one active
if (listOfAiObjects [i].activeSelf)
{
//we save its position
pointOnScreen = Camera.main.WorldToViewportPoint(listOfAiObjects [i].transform.position);
isInsideSphere = isOnLeichtgewichtRender(listOfAiObjects [i].transform.position);
}
else
{
pointOnScreen = Camera.main.WorldToViewportPoint(listOfAiStructs [i].pos);
isInsideSphere = isOnLeichtgewichtRender(listOfAiStructs[i].pos);
}
//If AI or Struct inside of the field of view
if (pointOnScreen.z > 0 && pointOnScreen.z < 50 && pointOnScreen.x > 0 && pointOnScreen.x < 1 && pointOnScreen.y > 0 && pointOnScreen.y < 1)
{
listOfAiObjects [i].SetActive(true);
//If the struct is the one active
if (listOfAiStructs [i].isActivated)
{
aiStruct currentAi = listOfAiStructs [i];
//We pass this values to the GameObject itself
//And deactive the struct
listOfAiObjects [i].transform.forward = currentAi.dir;
listOfAiObjects [i].transform.position = currentAi.pos;
listOfAiObjects [i].GetComponent <AIController> ().randomPos = currentAi.randomPos;
//This line is to pass the new destination to the NavMesh.
//If we send this to our NavMesh before our AIController script gets fired
//We get a nullpoint exception, since the other in which the values get started
//Change from one script to the other
listOfAiObjects [i].GetComponent <AIController> ().setValue(currentAi.randomPos);
listOfAiStructs [i].isActivated = false;
}
//If inside the sphere but not inside the field of view
}
else if (isInsideSphere)
{
//If our struct isnt active yet
if (!listOfAiStructs [i].isActivated)
{
//And our GameObject is
if (listOfAiObjects [i].activeSelf)
{
//We pass those values to the struct and deactive the GameObject
listOfAiStructs [i].pos = listOfAiObjects [i].transform.position;
listOfAiStructs [i].dir = listOfAiObjects [i].transform.forward;
listOfAiStructs [i].randomPos = listOfAiObjects [i].GetComponent <AIController> ().randomPos;
listOfAiObjects [i].SetActive(false);
}
//We start the struct
listOfAiStructs [i].isActivated = true;
}
//And update its position
listOfAiStructs [i] = updateStruct(listOfAiStructs [i]);
}
else
{
//If AI outside of everything, deactivate them
listOfAiObjects [i].SetActive(false);
listOfAiStructs [i].isActivated = false;
}
}
}