public static void chargePosition(CodableEntity codeEntity, Vector2 position, float chargeSpeed)
{
float distanceX = position.X - codeEntity.Center.X; //get distance from the target
float distanceY = position.Y - codeEntity.Center.Y;
float totalDistance = (float)Math.Sqrt(distanceX * distanceX + distanceY * distanceY); //get the total distance
codeEntity.velocity.X = distanceX * 5f / totalDistance * chargeSpeed;
codeEntity.velocity.Y = distanceY * 5f / totalDistance * chargeSpeed;
}
/*
* use this one instead
*/
public static void chargeTarget(CodableEntity codeEntity, Player target, float chargeSpeed)
{
codeEntity.velocity *= 0.98f; //slow down
float distanceX = target.position.X - codeEntity.Center.X; //get distance from the target
float distanceY = target.position.Y - codeEntity.Center.Y;
float totalDistance = (float)Math.Sqrt(distanceX * distanceX + distanceY * distanceY); //get the total distance
codeEntity.velocity.X = distanceX * 5f / totalDistance * chargeSpeed;
codeEntity.velocity.Y = distanceY * 5f / totalDistance * chargeSpeed;
}
public static void MoveToLocation(CodableEntity codeEntity, Vector2 location, float movement = 0.07f, float mult = 6f) //copied mostly from terraria's source code, EoC
{
float distX = location.X - codeEntity.Center.X;
float distY = location.Y - codeEntity.Center.Y;
float distTotal = (float)System.Math.Sqrt((double)(distX * distX + distY * distY));
distTotal = mult / distTotal;
distX *= distTotal;
distY *= distTotal;
if (codeEntity.velocity.X < distX)
{
codeEntity.velocity.X += movement;
if (codeEntity.velocity.X < 0f && distX > 0f)
{
codeEntity.velocity.X += movement;
}
}
else
{
if (codeEntity.velocity.X > distX)
{
codeEntity.velocity.X -= movement;
if (codeEntity.velocity.X > 0f && distX < 0f)
{
codeEntity.velocity.X -= movement;
}
}
}
if (codeEntity.velocity.Y < distY)
{
codeEntity.velocity.Y += movement;
if (codeEntity.velocity.Y < 0f && distY > 0f)
{
codeEntity.velocity.Y += movement;
}
}
else
{
if (codeEntity.velocity.Y > distY)
{
codeEntity.velocity.Y -= movement;
if (codeEntity.velocity.Y > 0f && distY < 0f)
{
codeEntity.velocity.Y -= movement;
}
}
}
}
/* Checks if an npc is in a certain range of the player.
* @Param target: The target of the npc
* @Param npc: the npc itsself.
* @Param range: the distance you want to check.
* @Param inout: whether or not to check if the target is inside the range our outside the range.
*/
public static bool IsInRange(Player target, CodableEntity npc, int range, bool insideRange)
{
if (insideRange)
{
if ((npc.Center - target.Center).Length() < range)
{
return(true);
}
}
if (!insideRange)
{
if ((npc.Center - target.Center).Length() > range)
{
return(true);
}
}
return(false);
}
/*
* Slows down the npc.
*/
public static void SlowDown(CodableEntity codeEnt, float speed = 0.98f)
{
codeEnt.velocity.X *= speed;
codeEnt.velocity.Y *= speed;
}