OpenEuphoria

1. Hi.

• Posted by Jesse Duke <dark at cyax.com> Aug 02, 2004
• 418 views

I just looked through the Euphoria demos.  Very nice.  It appears to be 
a very good rapid-prototyping language.  Debugging anything over 400 
lines must be a b-tch though...

I'm not used to it yet, but I've had familiarity with other languages 
such as C, so it's easy to modify the source code.  I made some tweaks 
to one of the samples; it tends to work smoother now.  Here it is, if 
anyone's interested.  Changes are marked in "--CHANGE: "

 - - -

file c:\euphoria\demos\dos32\mouse.ex

 - - -

        ----------------
        -- mouse test --
        ----------------
-- This is a very simple program to demonstrate the get_mouse() built-in
-- function. No call is made to mouse_events(), so by default all events are
-- reported by get_mouse().

include mouse.e
include graphics.e

sequence vc
vc = video_config()
if graphics_mode(17 + vc[VC_COLOR]) then -- 640x480 (16 colors)
    puts(1, "Can't get good graphics mode\n")
    abort(1)
end if
vc = video_config()
constant origin = {vc[VC_XPIXELS]/2, vc[VC_YPIXELS]/2}
constant MAX_LINE = 5

procedure beep(integer pitch) --CHANGE: This was irritating, so I 
commented out the entire thing...
   -- atom t --CHANGE
   -- sound(pitch) --CHANGE
   -- t = time() --CHANGE
  --  while time() < t+0.07 do --CHANGE
   -- end while --CHANGE
   -- sound(0) --CHANGE
end procedure

procedure try_mouse()
    integer color, line, eventNo, oldx, oldy, newx, newy --CHANGE
    object event
    sequence movement, str

    color = 14
    eventNo = 0
    line = 1
    oldx = 0 --CHANGE
    oldy = 0 --CHANGE
    newx = 0 --CHANGE
    newy = 0 --CHANGE
    while 1 do
    event = get_mouse()
    if sequence(event) then
        eventNo += 1
        movement = "- -- -- --"
                                oldx=newx --CHANGE: previous line is 
blacked out...
                                oldy=newy --CHANGE
                                newx=event[2] --CHANGE
                                newy=event[3] --CHANGE

        if and_bits(event[1], MOVE) then
        movement[1] = 'M'
        mouse_pointer(0)
        draw_line(BLACK, {origin, {oldx, oldy}}) --CHANGE: the blacking 
out...
        draw_line(color, {origin, {newx, newy}})  --CHANGE
        mouse_pointer(1)
        end if

        if and_bits(event[1], LEFT_DOWN) then
        movement[3] = 'D'
        beep(500)
        color += 1
        if color > 15 then
            color = 0
        end if
        end if

        if and_bits(event[1], LEFT_UP) then
        movement[4] = 'U'
        beep(500)
        end if
               
        if and_bits(event[1], MIDDLE_DOWN) then
        movement[6] = 'D'
        beep(1000)
        end if
       
        if and_bits(event[1], MIDDLE_UP) then
        movement[7] = 'U'
        beep(1000)
        end if
       
        if and_bits(event[1], RIGHT_DOWN) then
        movement[9] = 'D'
        beep(1000)
        color -= 1 --CHANGE: right-click now cycles colors backwards.
        if color < 0 then --CHANGE
            color = 15 --CHANGE
       end if --CHANGE
        end if
       
        if and_bits(event[1], RIGHT_UP) then
        movement[10] = 'U'
        beep(1000)
        end if
       
        if eventNo > 1 then
        puts(1, str)
        line += 1
        if line > MAX_LINE then
            line = 1
        end if
        position(line, 1)
        end if
       
        str = sprintf("event# %4d: %s, x:%d, y:%d       \r",
           {eventNo, movement, event[2], event[3]})

        text_color(WHITE)
        puts(1, str)
        text_color(WHITE)
        puts(1, '\n' & repeat(' ', length(str)))
        position(line, 1)
    end if
   
    if get_key() != -1 then
        exit
    end if
    end while
end procedure

try_mouse()

if graphics_mode(-1) then
end if