Lighting Amount

There re some useful functions to get the lighting level on a certain point.

The first step is to update the buffer with

glr_get_illumination_update();

Then you can get the lighting value with

glr_get_illumination(x, y);

note

x and y are relative to the view

Usage Example

//retrive information about illumination (use only once per frame)

glr_get_illumination_update();

//Player coordinates in screen space

var px = obj_player.x - camera_get_view_x(view_camera[0]);

var py = obj_player.y - camera_get_view_y(view_camera[0]);

var illum = 0;

//Get illumination around the player (5 points)

illum += glr_get_illumination(px, py);

illum += glr_get_illumination(px-16, py-16);

illum += glr_get_illumination(px+16, py-16);

illum += glr_get_illumination(px+16, py+16);

illum += glr_get_illumination(px-16, py+16);

illum /= 5; //mean value

return illum;