private void pnlContainer_MouseUp(object sender, MouseEventArgs e)
        {
            int x = (int)(e.X / (float)pnlContainer.Width * Environment.envW);
            int y = (int)(e.Y / (float)pnlContainer.Height * Environment.envH);

            if (e.Button == MouseButtons.Right)
            {
                environment.remove(x, y);

                txtHumans.Text = environment.count(new Human(environment)).ToString();
                txtMammoths.Text = environment.count(new Mammoth(environment)).ToString();
                txtPlants.Text = environment.count(new Plant(environment)).ToString();
                txtObstacles.Text = environment.count(new Stone(environment)).ToString();

                environment.draw();
            }
            else if (e.Button == MouseButtons.Middle)
            {
                Entity add;
                if (cmbAdd.Text == "Mammoth") add = new Mammoth(environment);
                else if (cmbAdd.Text == "Human") add = new Human(environment);
                else if (cmbAdd.Text == "Plant") add = new Plant(environment);
                else if (cmbAdd.Text == "Stone") add = new Stone(environment);
                else return;

                Entity ent = environment.getNearest(x, y, add);
                if (ent != null)
                    MessageBox.Show(environment.getDistance(x, y, ent.x, ent.y).ToString());
            }
            else {
                Entity ent = environment.get(x, y);
                if (ent != null)
                {
                    txtActions.Text = ("Info:\r\n" + ent.getInfo() + "\r\n(x, y):(" + x + "," + y + ")");
                }
            }
        }
        private void pnlContainer_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            Entity add = null;
            if (cmbAdd.Text == "Mammoth") add = new Mammoth(environment);
            else if (cmbAdd.Text == "Human") add = new Human(environment);
            else if (cmbAdd.Text == "Plant") add = new Plant(environment);
            else if (cmbAdd.Text == "Stone") add = new Stone(environment);

            int x = (int)(e.X / (float)pnlContainer.Width * Environment.envW);
            int y = (int)(e.Y / (float)pnlContainer.Height * Environment.envH);

            if (add != null) add.init();
            if (environment.get(x, y) == null && add != null) environment.add(add, x, y);
            else if (environment.get(x, y) is Human)
            {
                Human h = (Human)environment.get(x, y);
                h.strategy = (Strategies)(((int)h.strategy + 1) % 4);
            }

            txtHumans.Text = environment.count(new Human(environment)).ToString();
            txtMammoths.Text = environment.count(new Mammoth(environment)).ToString();
            txtPlants.Text = environment.count(new Plant(environment)).ToString();
            txtObstacles.Text = environment.count(new Stone(environment)).ToString();

            environment.draw();
        }