// Function to check if path is free of any wall
public static bool IsPathClear(Convertible c, Camera cam, Maze maze)
{
bool result = true;
int x1, y1, x2, y2;
x1 = (int)cam.Position.X;
y1 = (int)cam.Position.Z;
x2 = (int)c.Position.X;
y2 = (int)c.Position.Z;
if (IsInSameRow(c, cam))
{
if (x1 <= x2)
{
while (result && x1 != x2)
{
x1++;
result = !(maze.GetCube(x1, y1).Type == TileType.Wall);
}
}
else
{
while (result && x1 != x2)
{
x2++;
result = !(maze.GetCube(x2, y2).Type == TileType.Wall);
}
}
}
else
{
if (x1 <= x2)
{
while (result && y1 != y2)
{
y1++;
result = !(maze.GetCube(x1, y1).Type == TileType.Wall);
}
}
else
{
while (result && y1 != y2)
{
y2++;
result = !(maze.GetCube(x2, y2).Type == TileType.Wall);
}
}
}
return(result);
}
public void Update(GameTime gameTime)
{
if (Instance.IsActive)
{
Input.Update();
if (GameState == GameState.GameOver || GameState == GameState.Win)
{
if (Input.KeyPressed(Keys.Escape, true))
{
Instance.Exit();
}
}
else
{
hud.Update(gameTime);
Maze.Update(gameTime);
if (Input.KeyPressed(Keys.E, true) && !Convertible.IsConversionOn)
{
closestConvertible = null;
double minDist = 9999;
// Find the closest Convertibles in the front of the camera
foreach (Convertible c in Maze.Convertibles)
{
if (Maze.IsInFront(c, Camera))
{
// Check if the distance is less than the previous minimum
double distance = Math.Sqrt((double)(Math.Pow(c.Position.X - Camera.Position.X, 2) + Math.Pow(c.Position.Z - Camera.Position.Z, 2)));
if (distance < minDist)
{
// Check if said convertible is visible by the camera
if (Maze.IsPathClear(c, Camera, Maze))
{
minDist = distance;
closestConvertible = c;
}
}
}
}
if (closestConvertible != null)
{
Debug.Print("Closest : " + closestConvertible.Position.X + ";" + closestConvertible.Position.Y);
closestConvertible.DisplayConv = true;
}
else
{
Debug.Print("nothing found");
}
if (closestConvertible != null)
{
EventManager.Instance.Raise(new OnConversionStartEvent()
{
convertible = closestConvertible
});
conversionManager.Initialize(closestConvertible);
}
}
else if (Input.KeyPressed(Keys.Escape, true) && Convertible.IsConversionOn)
{
EventManager.Instance.Raise(new OnConversionStopEvent()
{
convertible = closestConvertible
});
closestConvertible.DisplayConv = false;
}
else if (Input.KeyPressed(Keys.Escape, true))
{
Instance.Exit();
}
// Move only if the player is not currently converting
if (!Convertible.IsConversionOn)
{
Camera.Update(gameTime);
}
else
{
conversionManager.Update(gameTime);
}
if (GameState == GameState.Transition)
{
GameState = GameState.Playing;
}
}
}
}
// Check if Convertible is visible over the cam
private static bool IsVisibleOver(Convertible c, Camera cam)
{
return(IsOverCam(c, cam) && (MathHelper.ToDegrees(cam.Rotation.Y) > 135) || (MathHelper.ToDegrees(cam.Rotation.Y) < -135));
}
// Check if Convertible is visible at the left of the cam
private static bool IsVisibleLeft(Convertible c, Camera cam)
{
return(IsLeftOfCam(c, cam) && (MathHelper.ToDegrees(cam.Rotation.Y) > -135) && (MathHelper.ToDegrees(cam.Rotation.Y) < -45));
}
// Check if Convertible X value is lower than camera's
private static bool IsLeftOfCam(Convertible c, Camera cam)
{
return(IsInSameRow(c, cam) && (int)c.Position.X <= cam.Position.X);
}
// Check if Convertible is visible under the cam
private static bool IsVisibleUnder(Convertible c, Camera cam)
{
return(IsUnderCam(c, cam) && (MathHelper.ToDegrees(cam.Rotation.Y) > -45) && (MathHelper.ToDegrees(cam.Rotation.Y) < 45));
}
// Check if Convertible Z value is lower than camera's
private static bool IsOverCam(Convertible c, Camera cam)
{
return(IsInSameColumn(c, cam) && (int)c.Position.Z <= cam.Position.Z);
}
// Check if Convertible in same column
private static bool IsInSameColumn(Convertible c, Camera cam)
{
return((int)c.Position.X == (int)cam.Position.X);
}
// Check if Convertible in same row
private static bool IsInSameRow(Convertible c, Camera cam)
{
return((int)c.Position.Z == (int)cam.Position.Z);
}
// *** Functions to check Convertible presence in field of view ***
// Check if Convertible is in front of the camera
public static bool IsInFront(Convertible c, Camera cam)
{
return(IsVisibleUnder(c, cam) || IsVisibleOver(c, cam) || IsVisibleRight(c, cam) || IsVisibleLeft(c, cam));
}
public void Initialize(Convertible convertible)
{
this.convertible = convertible;
number = "";
firstInput = true;
}