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support mouse cursor

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This commit is contained in:
a.borisov 2022-05-12 18:17:26 +03:00
parent f86c1a22ac
commit a1430a42aa
3 changed files with 41 additions and 2 deletions
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37
Engine.cpp
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@ -33,6 +33,9 @@ static XClassHint * classhint = NULL;
static XWMHints * wmhints = NULL;
static XSizeHints * sizehints = NULL;
static char title[] = "game";
static int mouse_x = 0;
static int mouse_y = 0;
static bool mouse_btn_down[5] = { 0 };
static void term_sig_handler(int)
{
@ -46,6 +49,21 @@ bool is_key_pressed(int button_vk_code)
return keys[button_vk_code];
}
bool is_mouse_button_pressed(int mouse_button)
{
return mouse_btn_down[mouse_button];
}
int get_cursor_x()
{
return mouse_x;
}
int get_cursor_y()
{
return mouse_y;
}
static void on_key_event(XKeyEvent & event, bool pressed)
{
const int buf_size = 256;
@ -121,7 +139,7 @@ int main(int, const char **)
pixmap = XCreatePixmap(display, window, SCREEN_WIDTH, SCREEN_HEIGHT, 24);
XSelectInput(display, window, ExposureMask | KeyPressMask | KeyReleaseMask);
XSelectInput(display, window, ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask);
XMapWindow(display, window);
wmDeleteMessage = XInternAtom(display, "WM_DELETE_WINDOW", false);
XSetWMProtocols(display, window, &wmDeleteMessage, 1);
@ -151,8 +169,25 @@ int main(int, const char **)
if (event.type == KeyRelease)
on_key_event(event.xkey, false);
if (event.type == ButtonPress && event.xbutton.button > 0 && event.xbutton.button <= 5)
mouse_btn_down[event.xbutton.button - 1] = true;
if (event.type == ButtonRelease && event.xbutton.button > 0 && event.xbutton.button <= 5)
mouse_btn_down[event.xbutton.button - 1] = false;
if (event.type == ClientMessage && event.xclient.data.l[0] == (int)wmDeleteMessage)
quit = true;
Window root_return, child_return;
int root_x_return, root_y_return;
int win_x_return, win_y_return;
unsigned int mask_return;
if (XQueryPointer(display, window, &root_return, &child_return, &root_x_return, &root_y_return,
&win_x_return, &win_y_return, &mask_return))
{
mouse_x = win_x_return;
mouse_y = win_y_return;
}
}
uint64_t curTime = get_nsec();

3
Engine.h
View file

@ -27,6 +27,9 @@ enum
// VK_SPACE, VK_RIGHT, VK_LEFT, VK_UP, VK_DOWN, etc.
bool is_key_pressed(int button_vk_code);
bool is_mouse_button_pressed(int mouse_button);
int get_cursor_x();
int get_cursor_y();
void initialize();
void finalize();

3
Game.cpp
View file

@ -11,10 +11,11 @@
// is_key_pressed(int button_vk_code) - check if a key is pressed,
// use keycodes (VK_SPACE, VK_RIGHT, VK_LEFT, VK_UP, VK_DOWN, VK_RETURN)
//
// get_cursor_x(), get_cursor_y() - get mouse cursor position
// is_mouse_button_pressed(int button) - check if mouse button is pressed (0 - left button, 1 - right button)
// schedule_quit_game() - quit game after act()
// initialize game data in this function
void initialize()
{