[gameprogrammer] Re: Application Browser Status
- From: Olof Bjarnason <olof.bjarnason@xxxxxxxxx>
- To: gameprogrammer@xxxxxxxxxxxxx
- Date: Tue, 6 Sep 2005 08:39:12 +0200
You have rejected the idea of an interpreted / bytecode compiled
language executing on the client instead of sending all low-level
commands over the net? It would be like a 3d game language.. Similar
to java applet architecture. Of course more work -- guess you need
some high-level language implying a compiler, the "emulator" or
"virtual machine" in java lingua should be easier to implement. The
idea of communicating/animating over the net just does not appeal to
me ... even in ten years when "everybody" has 100mbit network there
will be lag ..
/Olof
On 9/5/05, Chris Nystrom <cnystrom@xxxxxxxxx> wrote:
> On 9/5/05, Bob Pendleton <bob@xxxxxxxxxxxxx> wrote:
> >
> > Is the application so busy sending graphics commands that it isn't
> > spending time listening to input on the socket? My guess is that you are
> > allowing the application to spend all its time sending without receiving
> > very often.
> >
>
> No it is multi-threaded, so it is doing both at the same time. I watch the
> log file for the application in real time and it seems to get the message
> about the event (mouse click or whatever) right away. It is the other end
> that seems to be the problem. In an application where there are constant
> screen update messages (like an animation that is constantly changing) any
> response is buried behind a bunch of previous screen update messages because
> of the animation.
>
> For example, this works fine because it does not re-paint the screen until
> something happens:
>
> --
>
> #include "nio_lib.h"
>
> void paint_screen(void);
> bool mouse_state_equal(mouse_state ms_a, mouse_state ms_b);
>
> static color black;
> static mouse_state ms1;
> static mouse_state ms2;
> static int font;
>
> int main(int argc, char *argv[])
> {
> color white;
>
> nio_app_init("mouse_test4", "0.1");
>
> black = nio_get_color("black");
> white = nio_get_color("white");
>
> font = nio_load_sys_font(NIO_DEFAULT_FONT,
> NIO_DEFAULT_PTSIZE,
> NIO_STYLE_NORMAL, white,
> black);
>
> nio_term_init(font, black, 10, 10, 24, 80);
>
> ms1 = nio_mouse_state();
>
> while (1) {
>
> ms2 = nio_mouse_state();
>
> if (!mouse_state_equal(ms2, ms1)) {
> paint_screen();
> }
> }
>
> nio_free_font(font);
> nio_exit();
> exit(0);
> }
>
> void
> paint_screen(void)
> {
> nio_clear_screen(black, FALSE);
> nio_print_at(2, 2, "\nNIO Mouse Test 4 (version 0.01)\n",
> FALSE);
>
> if (ms2.b1 == PRESSED) {
> nio_print_at(6, 2, "MOUSE BUTTON 1 PRESSED", FALSE);
> }
>
> if (ms2.b2 == PRESSED) {
> nio_print_at(8, 2, "MOUSE BUTTON 2 PRESSED", FALSE);
> }
>
> if (ms2.b3 == PRESSED) {
> nio_free_font(font);
> nio_exit();
> exit(0);
> }
>
> nio_printf_at(10, 2, FALSE, "MOUSE X = %d", ms2.x);
> nio_printf_at(12, 2, FALSE, "MOUSE Y = %d", ms2.y);
>
> nio_paint();
>
> ms1 = ms2;
> }
>
> bool
> mouse_state_equal(mouse_state ms_a, mouse_state ms_b)
> {
> if (ms_a.b1 != ms_b.b1)
> return(FALSE);
>
> if (ms_a.b2 != ms_b.b2)
> return(FALSE);
>
> if (ms_a.b3 != ms_b.b3)
> return(FALSE);
>
> if (ms_a.x != ms_b.x)
> return(FALSE);
>
> if (ms_a.y != ms_b.y)
> return(FALSE);
>
> return(TRUE);
> }
> --
>
> But there is a noticeable delay with this because it is constantly painting
> the screen, and so it works through the backlog of screen messages before it
> actually exits if you push the 3rd mouse button:
>
> --
>
> #include "nio_lib.h"
>
> static color black;
> static color white;
> static int xi = 1;
> static int yi = 450;
> static int font_num;
> static int image_num;
>
> void draw_screen(void)
> {
> nio_clear_screen(black, FALSE);
> nio_print_at(0, 0, "\nEXAMPLE 3 version 0.01\n", FALSE);
> nio_draw_image(image_num, xi, yi, FALSE);
> nio_paint();
> }
>
> void example3_init(void)
> {
> black = nio_get_color("black");
> white = nio_get_color("white");
>
> font_num = nio_load_sys_font(NIO_DEFAULT_FONT,
> NIO_DEFAULT_PTSIZE,
> NIO_STYLE_NORMAL,
> white, black);
>
> nio_term_init(font_num, black, 10, 10, 24, 80);
>
> image_num = nio_load_image("bumper.bmp");
> }
>
> int main(int argc, char *argv[])
> {
> bool fExit = FALSE;
> int xinc = 1;
>
> nio_app_init("example3", "0.1");
>
> example3_init();
>
> while (!fExit) {
>
> mouse_state ms;
>
> draw_screen();
>
> ms = nio_mouse_click();
>
> if (ms.b1) {
> fExit = TRUE;
> }
>
> xi += xinc;
>
> if (xi > 500) {
> xinc = -1;
> }
>
> if (xi < 1) {
> xinc = 1;
> }
> }
>
> nio_free_image(image_num);
> nio_free_font(font_num);
> nio_exit();
> exit(0);
> }
>
> Thanks,
>
> Chris
>
> --
> E-Mail: Chris Nystrom <cnystrom@xxxxxxxxx>
> Business: http://www.shaklee.net/austin
> Blog: http://conversazione.blogspot.com/
> AIM: nystromchris
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