//doesnt have to be a remote procedure call, since only the defender calls such a function
//instead we'll just make it public
//[PunRPC]
public GameObject upgradeTower()
{
//if already at max level, we can't upgrade anymore
if (towerLevel == 3)
{
return(null);
}
//if we are not the defenders (owners of this tower, we cannot upgrade it)
//this will prevent a malicious opponent from hacking and upgrading a weak tower to cost the defender money
if (!photonView.isMine)
{
return(null);
}
//safety check on the defender manager
if (dms == null)
{
dms = GameObject.Find("DefenderManager").GetComponent <DefenderManagerScript> ();
Debug.Log("dms was null");
}
//now that we're sure we want to upgrade the tower:
int newTowerLevel = towerLevel + 1;
//set free the spot that the old tower occupied, since we want to create a new upgraded tower
dms.availableSpots [gridPositionX, gridPositionY] = true;
//create a new tower (with a higher level) and destroy the old one
GameObject newTower = dms.buildTower(towerName, newTowerLevel, gridPositionX, gridPositionY);
if (gameObject.GetComponent <PhotonView> ().isMine)
{
PhotonNetwork.Destroy(this.gameObject);
}
return(newTower);
}
public void spawnTower(string towerType)
{
//make sure the player is in a room
if (!PhotonNetwork.inRoom)
{
return;
}
//safety check. if defender manager script is null, look for it
if (dms == null)
{
dms = defenderManager.GetComponent <DefenderManagerScript> ();
}
//create a ray to see where the user is pointing
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hitInfo;
//check on what the ray hits
if (Physics.Raycast(ray, out hitInfo))
{
//Debug.Log("Mouse is over: " + hitInfo.collider.name);
float x, y, z;
//storing the location of the collision
x = hitInfo.point.x;
y = hitInfo.point.y;
z = hitInfo.point.z;
//Debug.Log("at position: " + x + "," + y + "," + z);
GameObject hitObject = hitInfo.transform.root.gameObject;
//now we determine if they ray casted is on which of the cells. The details are in this comment:
//the droppable area goes from (233,0.01,251) till (412,0.01,366)
//it is divided into a grid of 6 cells by 9 cells. IE along the x-z axis it looks like:
// (233,366) (412,366)
//
// (233, 251) (412,251)
//if the mouse is on the grid dedicated for towers, then try to place a tower
if (hitInfo.collider.name == "Droppable Area")
{
float xDifference = x - 233; //goes from 0 to 179
float zDifference = z - 251; //goes from 0 to 115
//adding a 5 to maximum differences as a safety margin
const float maxXDifference = 412 - 233 + 5; //179 --> 184
const float maxZDifference = 366 - 251 + 5; //115 --> 120
int xCoordinate = (int)(xDifference * 9 / maxXDifference); //going form 0 to 8
int zCoordinate = (int)(zDifference * 6 / maxZDifference); //going from 0 to 5
//if (Input.GetMouseButtonDown (0)) {
//TODO: ask a game designer for specific tower prices. This will do for now
int towerBuildCost = 50;
//if the tower is affordable, build it
if (dms.souls >= towerBuildCost)
{
dms.souls -= towerBuildCost;
dms.buildTower(towerType, 1, xCoordinate, zCoordinate);
}
//}
}
}
}
