Unigine.GameIntersection Class

// AppWorldLogic.cs

/* ... */
// initialize points of the mouse direction
Vec3 p0, p1;

// get the current player (camera)
Player player = Game.Player;
if (player == null)
	return;

// get size (width and height) of the current application window
EngineWindow main_window = WindowManager.MainWindow;
if (!main_window)
	Engine.Quit();

ivec2 main_size = main_window.Size;

// get the current X and Y coordinates of the mouse pointer
int mouse_x = Input.MousePosition.x - main_window.Position.x;
int mouse_y = Input.MousePosition.y - main_window.Position.y;

// get the mouse direction from the player's position (p0) to the mouse cursor pointer (p1)
player.GetDirectionFromScreen(out p0, out p1, 0, 0, mouse_x, mouse_y, main_size.x, main_size.y);

// create an instance of the GameIntersection class
GameIntersection intersection = new GameIntersection();

// try to get the intersection with an obstacle
// cylinder has radius 1.5f, intersection mask equals to 1
Obstacle obstacle = Game.GetIntersection(p0, p1, 1.5f, 1, intersection);

// check, if the intersection of mouse direction with any obstacle was occurred;
if (obstacle != null)
{
	// show the coordinates of the intersection in console 
	Log.Message("The intersection with the obstacle was here: ({0} {1} {2})\n", intersection.Point.x, intersection.Point.y, intersection.Point.z);
}
/* ... */