Figure 1.1: 2D coordinates.
Positions in 2D have an x- and a y- coordinate, just as a point in a graph. In Esenthel the zero point is the middle of the screen. Positive values on the X-axis are to the right, negative values to the left. Positive values on the Y-axis are in the upper half of the screen, negative values on the lower half.
The class Vec2 is used to represent a 2D coordinate. There are several ways to set the x and y values:
Vec2 pos;
pos.x = 0.1; // set the x value to 0.1
pos.y = -0.3; // set the y value to -0.3
pos = 0.5; // both x and y are set to 0.5
5pos.set(0.1, -0.3); // use the function set(float x, float y)
// to assign both x and y