fget_angle()
Definition
INT fget_angle ( <INT pointA-X> , <INT pointA-Y> , <INT pointB-X> , <INT pointB-Y> )
Returns the angle between two certain points. The returned angle will be ranging from 0 to 360000 (0-360º).
Parameters
- INT pointA-X - The X-coordinate of point A.
- INT pointA-Y - The Y-coordinate of point A.
- INT pointB-X - The X-coordinate of point B.
- INT pointB-Y - The Y-coordinate of point B.
Returns
INT : The angle between point A and point B.
Notes
The angle value returned by this function is in thousandths of degrees, as most angles within Bennu are.
Example
Const
screen_width = 320;
screen_height = 200;
screen_depth = 8;
screen_fps = 60;
screen_frameskip = 0;
End
Global
int distance;
int tempID;
End
Process Main()
Begin
// Set the screen mode
set_mode(screen_width,screen_height,screen_depth);
set_fps(screen_fps,screen_frameskip);
// Change this to see what happens
resolution = 100;
// Create mouse graph, assign to mouse.graph
mouse.graph = new_map(20,20,screen_depth);
map_clear(0,mouse.graph,rgb(255,0,0));
// Create arrow, assign to graph
graph = new_map(30,30,screen_depth);
drawing_map(0,graph);
drawing_color(rgb(0,255,0));
draw_line( 0,29,29,30/2);
draw_line( 0, 0,30,30/2);
// Set position
x = screen_width /2 * resolution;
y = screen_height/2 * resolution;
// Display distance
write(0,0,0,0,"Distance:");
write_int(0,60,0,0,&distance);
// Always point to the mouse
Repeat
// Get the angle and distance between this process' coordinates and those of the mouse.
angle = fget_angle(x,y,mouse.x*resolution,mouse.y*resolution);
distance = fget_dist (x,y,mouse.x*resolution,mouse.y*resolution);
frame;
Until(key(_esc))
End
Used in example: set_mode(), new_map(), map_clear(), drawing_map(), drawing_color(), draw_line(), write(), write_int(), fget_angle(), fget_dist(), resolution, mouse, graph, x, y, angle.
This example could also be done with get_angle(), but that would be more work.