/// <summary>
/// General purpose helper method that checks if an object collides with
/// anything else in the world.
/// </summary>
/// <param name="o"></param> The object we want to check against everything else
/// <param name="objectType"></param> A integer code that tells the method what kind of object o is
/// <returns></returns>
private bool CheckForCollision(Object o, int objectType)
{
//Collision flags
bool collisionStatusX = false;
bool collisionStatusY = false;
//If o is a projectile
if (objectType == 0)
{
Projectile proj = o as Projectile;
//returns true if projectile if it leaves world
if ((proj.Location.GetX() > serverWorld.Size / 2) || (proj.Location.GetX() < -(serverWorld.Size / 2)) || (proj.Location.GetY() > serverWorld.Size / 2) || (proj.Location.GetY() < -serverWorld.Size / 2))
{
return(true);
}
//Check collsion against walls
foreach (Wall curWall in serverWorld.Walls.Values)
{
//Get range of values for x
double high = Math.Max(curWall.GetP2().GetX(), curWall.GetP1().GetX()) + 25;
double low = Math.Min(curWall.GetP2().GetX(), curWall.GetP1().GetX()) - 25;
//Check if projectile is in between range of x values
if (proj.Location.GetX() < high && proj.Location.GetX() > low)
{
collisionStatusX = true;
}
//Get range of values for y
high = Math.Max(curWall.GetP2().GetY(), curWall.GetP1().GetY()) + 25;
low = Math.Min(curWall.GetP2().GetY(), curWall.GetP1().GetY()) - 25;
//Check if projectile is in between range of y values
if (proj.Location.GetY() < high && proj.Location.GetY() > low)
{
collisionStatusY = true;
}
//If both are within range, projectile collided with wall so return true
if (collisionStatusX && collisionStatusY)
{
return(true);
}
else //Projectile did not collide with this wall, reset flags and move on to next segment
{
collisionStatusY = false;
collisionStatusX = false;
continue;
}
}
//Check collision against tanks
lock (serverWorld.Tanks)
{
foreach (Tank t in serverWorld.Tanks.Values)
{
//Create radius around tank
Vector2D radius = proj.Location - t.Location;
//If distance between projectile and tank is less than 30, its a hit
if (radius.Length() < 30 && proj.getOwner() != t.GetID())
{
//Can't hit a dead tank
if (t.HealthLevel == 0)
{
return(false);
}
//It's a hit if tank has health
if (t.HealthLevel > 0)
{
//decrement tank health
t.HealthLevel -= 1;
}
//if health is 0, then it has died
if (t.HealthLevel == 0)
{
t.HasDied = true;
//increment player score
serverWorld.Tanks[proj.getOwner()].Score++;
}
return(true);
}
}
}
}
//object is a tank
else if (objectType == 1)
{
Tank t = o as Tank;
//Check for powerup collision and wall collision
foreach (Wall curWall in serverWorld.Walls.Values)
{
//Get range of values for x
double high = Math.Max(curWall.GetP2().GetX(), curWall.GetP1().GetX()) + 55;
double low = Math.Min(curWall.GetP2().GetX(), curWall.GetP1().GetX()) - 55;
//Check if projectile is in between range of x values
if (t.Location.GetX() < high && t.Location.GetX() > low)
{
collisionStatusX = true;
}
//Get range of values for y
high = Math.Max(curWall.GetP2().GetY(), curWall.GetP1().GetY()) + 55;
low = Math.Min(curWall.GetP2().GetY(), curWall.GetP1().GetY()) - 55;
//Check if projectile is in between range of y values
if (t.Location.GetY() < high && t.Location.GetY() > low)
{
collisionStatusY = true;
}
//If both are within range, projectile collided with wall so return true
if (collisionStatusX && collisionStatusY)
{
return(true);
}
else //Projectile did not collide with this wall, reset flags and move on to next segment
{
collisionStatusY = false;
collisionStatusX = false;
continue;
}
}
lock (serverWorld.PowerUps)
{
foreach (PowerUp curPower in serverWorld.PowerUps.Values)
{
//Create radius around tank
Vector2D radius = curPower.position - t.Location;
//If distance between powerup and tank is less than 30, its a hit
if (radius.Length() < 30)
{
// Increment powerUp number if powerup is not collected
if (!curPower.collected)
{
t.CollectPowerup();
}
//Powerup has been collected
curPower.collected = true;
return(false);
}
}
}
}
//object is a powerup
else if (objectType == 2)
{
PowerUp power = o as PowerUp;
foreach (Wall curWall in serverWorld.Walls.Values)
{
//Get range of values for x
double high = Math.Max(curWall.GetP2().GetX(), curWall.GetP1().GetX()) + 25;
double low = Math.Min(curWall.GetP2().GetX(), curWall.GetP1().GetX()) - 25;
//Check if powerUp is in between range of x values
if (power.position.GetX() < high && power.position.GetX() > low)
{
collisionStatusX = true;
}
//Get range of values for y
high = Math.Max(curWall.GetP2().GetY(), curWall.GetP1().GetY()) + 25;
low = Math.Min(curWall.GetP2().GetY(), curWall.GetP1().GetY()) - 25;
//Check if powerUp is in between range of y values
if (power.position.GetY() < high && power.position.GetY() > low)
{
collisionStatusY = true;
}
//If both are within range, powerUp collided with wall so return true
if (collisionStatusX && collisionStatusY)
{
return(true);
}
else //PowerUp did not collide with this wall, reset flags and move on to next segment
{
collisionStatusY = false;
collisionStatusX = false;
continue;
}
}
lock (serverWorld.Tanks)
{
foreach (Tank t in serverWorld.Tanks.Values)
{
//Create radius around tank
Vector2D radius = power.position - t.Location;
//If distance between powerUp and tank is less than 30, it can't spawn
if (radius.Length() < 30)
{
return(true);
}
}
}
}
return(false);
}
