static void events(void) {
SDL_Event event;
static const int button_map[] = {
[SDL_BUTTON_LEFT] = 1,
[SDL_BUTTON_RIGHT] = 2,
[SDL_BUTTON_MIDDLE] = 3,
// SDL2 Additional buttons
[SDL_BUTTON_X1] = 4,
[SDL_BUTTON_X2] = 5,
};
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT : loop_run = 0; break;
case SDL_KEYDOWN : event_key(event.key.keysym.sym&511, 1); break;
case SDL_KEYUP : event_key(event.key.keysym.sym&511, 0); break;
case SDL_MOUSEMOTION :
event_mouse(0, 0, event.motion.x, event.motion.y,
event.motion.xrel, event.motion.yrel); break;
case SDL_MOUSEBUTTONUP :
case SDL_MOUSEBUTTONDOWN :
event_mouse(button_map[event.button.button],
event.button.type == SDL_MOUSEBUTTONDOWN ? 1:0,
event.button.x, event.button.y, 0, 0); break;
break;
}
}
}
int event_parse(SDL_Event ev)
{
switch(ev.type) {
case SDL_KEYDOWN:
return event_key(ev.key, EVENT_PRESS);
case SDL_KEYUP:
return event_key(ev.key, EVENT_RELEASE);
case SDL_MOUSEMOTION:
return event_mouse(ev.motion);
case SDL_MOUSEBUTTONDOWN:
return event_button(ev.button, EVENT_PRESS);
case SDL_MOUSEBUTTONUP:
return event_button(ev.button, EVENT_RELEASE);
case SDL_JOYAXISMOTION:
return event_joystick(ev.jaxis);
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
return event_fire(ev.jbutton);
case SDL_WINDOWEVENT:
if(ev.window.windowID == screen_window_id) {
if(ev.window.event == SDL_WINDOWEVENT_RESIZED) {
if((ev.window.data1 % 512) == 0 && (ev.window.data2 % 314) == 0)
screen_make_texture(SDL_SCALING_NEAREST);
else
screen_make_texture(SDL_SCALING_LINEAR);
}
}
break;
case SDL_QUIT:
if(debugger)
return EVENT_DEBUG;
else {
SDL_Quit();
exit(0);
}
}
return EVENT_NONE;
}
/**
* Posts a sample cloudwatch event, based on command line input
*/
int main(int argc, char** argv)
{
if (argc != 4)
{
std::cout << "Usage:" << std::endl << " put_events " <<
"<resource_arn> <sample_key> <sample_value>" << std::endl;
return 1;
}
Aws::SDKOptions options;
Aws::InitAPI(options);
{
Aws::String resource_arn(argv[1]);
Aws::String event_key(argv[2]);
Aws::String event_value(argv[3]);
Aws::CloudWatchEvents::CloudWatchEventsClient cwe;
Aws::CloudWatchEvents::Model::PutEventsRequestEntry event_entry;
event_entry.SetDetail(MakeDetails(event_key, event_value));
event_entry.SetDetailType("sampleSubmitted");
event_entry.AddResources(resource_arn);
event_entry.SetSource("aws-sdk-cpp-cloudwatch-example");
Aws::CloudWatchEvents::Model::PutEventsRequest request;
request.AddEntries(event_entry);
auto outcome = cwe.PutEvents(request);
if (!outcome.IsSuccess())
{
std::cout << "Failed to post cloudwatch event: " <<
outcome.GetError().GetMessage() << std::endl;
}
else
{
std::cout << "Successfully posted cloudwatch event" << std::endl;
}
}
Aws::ShutdownAPI(options);
return 0;
}
int main(void)
{
int count = 0;
int G_pressed = 0, R_pressed = 1;
char vstring[10], wstring[10];
double x1_old, y1_old;
double x2_old, y2_old;
double x1_new, y1_new;
double x2_new, y2_new;
double vx, vy, wx, wy;
double v, w;
posvel pv;
x1_old = 100.0;
y1_old = 100.0;
vx = 10.0;
vy = 5.0;
x2_old = 250.0;
y2_old = 250.0;
wx = -8.0;
wy = 4.0;
v = sqrt(pow(wx,2)+pow(wy,2));
w = sqrt(pow(vx,2)+pow(vy,2));
/* open the graphics window */
initwindow(XWINDOW, YWINDOW);
/* allow mouse operations */
initmouse();
/* allow keyboard operations */
initkeyboard();
/* create an event queue */
create_event_queue();
/* register display, mouse and keyboard as event sources */
reg_display_events();
reg_mouse_events();
reg_keyboard_events();
/* initialize the font */
initfont();
outtextxy(4,5,"To quit press left mouse button or close graphics window");
outtextxy(4,15,"To pause press right mouse button");
outtextxy(4,25,"To change ball speed use arrow keys (up/down = red, left/right = blue)");
outtextxy(4,35,"To make the red ball green press G or g ");
do
{
if (check_if_event())
{
/* wait for event */
wait_for_event();
if (event_close_display())
break;
else if (event_mouse_button_down())
{
if (event_mouse_left_button_down())
break;
else if (event_mouse_right_button_down())
wait_for_event();
}
else if (event_key_down())
{ /* change speed of first ball */
if(event_key_up_arrow())
{
vx = 1.25*vx;
vy = 1.25*vy;
}
else if(event_key_down_arrow())
{
vx = 0.75*vx;
vy = 0.75*vy;
}
else if(event_key_left_arrow())
{
wx = 0.75*wx;
wy = 0.75*wy;
}
else if(event_key_right_arrow())
{
wx = 1.25*wx;
wy = 1.25*wy;
}
if (event_key('G'))
{
G_pressed = 1;
R_pressed = 0;
}
else if (event_key('R'))
{
R_pressed = 1;
G_pressed = 0;
}
}
}
v = sqrt(pow(wx,2)+pow(wy,2));
w = sqrt(pow(vx,2)+pow(vy,2));
/* calculate new ball positions */
x1_new = x1_old + vx*TICK;
y1_new = y1_old + vy*TICK;
x2_new = x2_old + wx*TICK;
y2_new = y2_old + wy*TICK;
/* handle what to do if balls hit boundaries */
pv = hit_boundary(x1_new, vx, 1);
x1_new = pv.pos;
vx = pv.vel;
pv = hit_boundary(x2_new, wx, 1);
x2_new = pv.pos;
wx = pv.vel;
pv = hit_boundary(y1_new, vy, 0);
y1_new = pv.pos;
vy = pv.vel;
pv = hit_boundary(y2_new, wy, 0);
y2_new = pv.pos;
wy = pv.vel;
/* draw balls on screen buffer in new positions */
filled_circle(x1_new, y1_new, RADIUS , BLUE);
if (G_pressed)
filled_circle(x2_new, y2_new, RADIUS , GREEN);
else if (R_pressed)
filled_circle(x2_new, y2_new, RADIUS , RED);
/* make the balls visible on the screen display
and remove the balls in the previous positions */
sprintf(vstring, "%4.2lf", v);
sprintf(wstring, "%4.2lf", w);
setcolor(RED);
outtextxy(VEL_TEXT_X,VEL_TEXT_Y,"v = ");
/* clear area for numeric output */
filled_rectangle(VEL_TEXT_X+40, VEL_TEXT_Y-10, VEL_TEXT_X+100, VEL_TEXT_Y+20, BLACK);
outtextxy(VEL_TEXT_X+60,VEL_TEXT_Y,vstring);
setcolor(BLUE);
outtextxy(VEL_TEXT_X+120,VEL_TEXT_Y,"w = ");
/* clear area for numeric output */
filled_rectangle(VEL_TEXT_X+160, VEL_TEXT_Y-10, VEL_TEXT_X+220, VEL_TEXT_Y+20, BLACK);
outtextxy(VEL_TEXT_X+180,VEL_TEXT_Y,wstring);
update_display();
/* remove the balls in the previous positions on
the screen buffer */
filled_circle(x1_old, y1_old, RADIUS , BLACK);
filled_circle(x2_old, y2_old, RADIUS , BLACK);
/* update the old positions */
x1_old = x1_new;
y1_old = y1_new;
x2_old = x2_new;
y2_old = y2_new;
count++;
pausefor(8); /* wait 8 miliseconds */
}
while (count < MAXCOUNT);
/* close the mouse */
closemouse();
/* remove the display */
closegraph();
return 0;
}
