Create:
rw=room_width/4;
rh=room_height/4;
for (i=0; i<=rw; i+=1) {
for (n=0; n<=rh; n+=1) {
grid[i,n]=c_white;
}
}
colselect=c_black;
paint=surface_create(room_width,room_height)
Draw:
if (mouse_x<room_width-100) {
if (mouse_check_button_pressed(mb_left)) {
mx=(ceil(mouse_x/4)*4)/4-1;
my=(ceil(mouse_y/4)*4)/4-1;
grid[mx,my]=colselect;
//m=mouse_x;
//p=mouse_y;
}
if (mouse_check_button_released(mb_left)) {
surface_set_target(paint)
for (h=0; h<=rw-1; h+=1) {
for (q=0; q<=rh-1; q+=1) {
draw_set_color(grid[h,q])
draw_rectangle(2+(h*4)-2,2+(q*4)-2,2+(h*4)+2,2+(q*4)+2,false)
}
}
surface_reset_target()
}
}
draw_surface(paint,0,0)
draw_set_color(c_ltgray)
draw_rectangle(room_width-100,0,room_width,room_height,false)