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I'm trying to move pictureboxes(NPCs) automatically towards to main character(pictureBox1), basically I want them to chase pB1. I'm very new to vectors. I couldn't understand the logic very well. First, let me show the codes.

 int pictx,picty,mcx,mcy;

 private void Monster_drag_Tick(object sender, EventArgs e)
 
 foreach (var pict in this.Controls.OfType<PictureBox>())
 
 pictx = pict.Location.X;
 picty = pict.Location.Y;
 mcx = pictureBox1.Location.X;
 mcy = pictureBox1.Location.Y;
 if (pict.Name != "pictureBox1")
 
 ChaseVector(mcx, mcy, 0.5f); 
 
 
 

This was the timer event. Interval is 1000 by the way. Also I have a Struct that automatically creates pictureboxes. I'm pulling all pictureboxes that created with Struct by foreach as you can see.

And here is the Vector method;

public void ChaseVector(int x, int y, float speed)
 
 float tx = x - pictx;
 float ty = y - picty;
 double length = Math.Sqrt(tx * tx + ty * ty);
 if (length < speed)
 
 // move towards the goal
 pictx = (int)(pictx + speed * tx / length);
 picty = (int)(picty + speed * ty / length);
 foreach (var pict in this.Controls.OfType<PictureBox>())
 
 if (pict.Name != "pictureBox1")
 
 pict.Location = new Point(pictx, picty);
 
 
 
 else
 
 // already there
 pictx = x;
 picty = y;
 foreach (var pict in this.Controls.OfType<PictureBox>())
 
 if (pict.Name != "pictureBox1")
 
 pict.Location = new Point(pictx, picty);
 
 
 

 

I found this code on the stackoverflow. I really don't know anything about vectors. This code makes pictureboxes jump to main character. Flash them basically. I want them to chase mc slowly, like walking I mean. As if there is no speed, they are just jumping over the mc every time I move the character.

Waiting for your helps and if there is a better way to use Vectors please tell. Thanks in advance.