Allegro 5 api
#include <allegro5/allegro.h> ALLEGRO_COLOR al_map_rgba_f(float r, float g, float b, float a)
Convert r, g, b, a (ranging from 0.0f-1.0f) into an ALLEGRO_COLOR(3alleg5).
al_map_rgba(3alleg5), al_map_rgb(3alleg5), al_map_rgb_f(3alleg5)