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Remove "CanControlFrameBuffer" again, since it wasn't the cause of the crash: 

width and height were off by one, and ParticlesII was writing out of the
frame buffer. Some style cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32231 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2009-08-10 18:46:52 +00:00
parent a557cf937c
commit 4fd3a03652
1 changed files with 44 additions and 27 deletions
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71
src/tests/kits/game/ParticlesII/particlesII.cpp
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@ -95,7 +95,7 @@ void NApplication::ReadyToRun()
NWindowScreen *ws = new NWindowScreen(&ret);
PRINT(("WindowScreen ctor returned. ret = %s\n", strerror(ret)));
// exit if constructing the WindowScreen failed.
if((ws == NULL) || (ret < B_OK) || !ws->CanControlFrameBuffer())
if((ws == NULL) || (ret < B_OK))
{
//printf("the window screen was NULL, or there was an error\n");
PostMessage(B_QUIT_REQUESTED);
@ -114,7 +114,7 @@ bool NApplication::QuitRequested()
}
NWindowScreen::NWindowScreen(status_t *ret)
: BWindowScreen("Example", B_8_BIT_640x480, ret), width(640), height(480), COLORS(256)
: BWindowScreen("Example", B_8_BIT_640x480, ret), width(639), height(479), COLORS(256)
{
PRINT(("WindowScreen ctor.\n"));
thread_is_locked = true;
@ -148,7 +148,9 @@ NWindowScreen::NWindowScreen(status_t *ret)
set_frame_rate(30.);
}
void NWindowScreen::ScreenConnected(bool connected)
void
NWindowScreen::ScreenConnected(bool connected)
{
PRINT(("ScreenConnected()\n"));
fflush(stdout);
@ -156,7 +158,7 @@ void NWindowScreen::ScreenConnected(bool connected)
{
if(SetSpace(B_8_BIT_640x480) < B_OK)
{
SetFrameBuffer(640,480);
//SetFrameBuffer(640, 480);
PRINT(("SetSpace() failed\n"));
// properly set the framebuffer. exit if an error occurs.
be_app->PostMessage(B_QUIT_REQUESTED);
@ -268,19 +270,23 @@ void NWindowScreen::ScreenConnected(bool connected)
}
}
long NWindowScreen::Entry(void* p) {
long
NWindowScreen::Entry(void* p)
{
return ((NWindowScreen*)p)->MyCode();
}
long NWindowScreen::MyCode()
long
NWindowScreen::MyCode()
{
bigtime_t trgt = system_time() + frame_pause;
srandom(system_time());
// beforehand stuff
particle_count = 1024*2;
particle_list = (particle *)malloc(sizeof(particle)*particle_count);
for (uint32 i=0; i<particle_count; i++)
{
for (uint32 i=0; i<particle_count; i++) {
uint32 rand_max = 0xffffffff;
particle_list[i].init_velocity = -((double)((rand_max>>1)+(random()%(rand_max>>1)))/rand_max)*3.333; // magic number
particle_list[i].gravity = -(((double)((rand_max>>1)+(random()%(rand_max>>1)))/rand_max))*0.599; // more magic
@ -297,14 +303,12 @@ long NWindowScreen::MyCode()
// the loop o' fun
while(!(((NApplication*)be_app)->is_quitting))
{
while (!(((NApplication*)be_app)->is_quitting)) {
// try to sync with the vertical retrace
if(BScreen(this).WaitForRetrace() != B_OK)
{
if (BScreen(this).WaitForRetrace() != B_OK) {
// snoze for a bit so that other threads can be happy.
// We are realtime priority you know
if(system_time() < trgt)
if (system_time() < trgt)
snooze(trgt - system_time());
trgt = system_time() + frame_pause;
}
@ -319,7 +323,6 @@ long NWindowScreen::MyCode()
// eye candy VII - particles! - my own cookin
particle *s;
int32 x, y, cx,cy;
set_frame_rate(60.); // woo. ntsc
// calculate the center
@ -332,9 +335,8 @@ long NWindowScreen::MyCode()
// draw_line(i,0,i,height, i);
PRINT(("Starting particle drawing loop\n"));
s = particle_list;
for (uint32 i=0; i<particle_count; i++)
{
particle *s = particle_list;
for (uint32 i=0; i<particle_count; i++) {
PRINT(("drawing particle %d\r", i));
// save the old position
@ -427,7 +429,8 @@ void fill_ellipse(int x, int y, int xradius, int yradius, int color);
*/
void NWindowScreen::draw_line(int x1, int y1, int x2, int y2, int color)
void
NWindowScreen::draw_line(int x1, int y1, int x2, int y2, int color)
{
// Simple Bresenham's line drawing algorithm
int d,x,y,ax,ay,sx,sy,dx,dy;
@ -474,7 +477,9 @@ void NWindowScreen::draw_line(int x1, int y1, int x2, int y2, int color)
}
}
void NWindowScreen::draw_rect(int x, int y, int w, int h, int color)
void
NWindowScreen::draw_rect(int x, int y, int w, int h, int color)
{
draw_line(x,y,x+w,y,color);
draw_line(x,y,x,y+h,color);
@ -482,14 +487,20 @@ void NWindowScreen::draw_rect(int x, int y, int w, int h, int color)
draw_line(x+w,y,x+w,y+h,color);
}
void NWindowScreen::fill_rect(int x, int y, int w, int h, int color)
void
NWindowScreen::fill_rect(int x, int y, int w, int h, int color)
{
for(int i=0;i<w;i++)
for(int j=0;j<h;j++)
set_pixel(i,j,color);
for (int i = 0; i < w; i++) {
for (int j = 0; j < h; j++) {
set_pixel(i, j, color);
}
}
}
void NWindowScreen::draw_ellipse(int cx, int cy, int wide, int deep, int color)
void
NWindowScreen::draw_ellipse(int cx, int cy, int wide, int deep, int color)
{
// if we're asked to draw a really small ellipse, put a single pixel in the buffer
// and bail
@ -540,7 +551,9 @@ void NWindowScreen::draw_ellipse(int cx, int cy, int wide, int deep, int color)
}
}
void NWindowScreen::fill_ellipse(int cx, int cy, int wide, int deep, int color)
void
NWindowScreen::fill_ellipse(int cx, int cy, int wide, int deep, int color)
{
// if we're asked to draw a really small ellipse, put a single pixel in the buffer
// and bail
@ -591,7 +604,9 @@ void NWindowScreen::fill_ellipse(int cx, int cy, int wide, int deep, int color)
}
}
void NWindowScreen::ellipse_points(int x, int y, int x_offset, int y_offset, int color)
void
NWindowScreen::ellipse_points(int x, int y, int x_offset, int y_offset, int color)
{
// fill four pixels for every iteration in draw_ellipse
@ -617,7 +632,9 @@ void NWindowScreen::ellipse_points(int x, int y, int x_offset, int y_offset, int
set_pixel(xCoord,yCoord,color);
}
void NWindowScreen::ellipse_fill_points(int x, int y, int x_offset, int y_offset, int color)
void
NWindowScreen::ellipse_fill_points(int x, int y, int x_offset, int y_offset, int color)
{
// put lines between two pixels twice. once for y positive, the other for y negative (symmetry)
// for every iteration in fill_ellipse