[gameprogrammer] Re: Application Browser Status
- From: Chris Nystrom <cnystrom@xxxxxxxxx>
- To: gameprogrammer@xxxxxxxxxxxxx
- Date: Mon, 5 Sep 2005 16:45:55 -0500
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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