Parametric curve Gun

Rules:

• Select equations for x and y in the parametric form
• Input the values of parameters separated by space or coma
• Click on the graphics area to fire
• The "bullet" stops if it hits the boundary or the black block or the target.
• There is one restriction for the choice of equations:  The point {x(t),y(t)} should not be too far away from the origin for t=0.
• The score shown is the average of all the games.  The score for each game is 100/number of trials.