commit 3ef1e747d8e742f2f63e31183f52cdcec5ba3d50
parent 062ae436f429e77fe0b1a45b043e27f072399f6c
Author: Matsuda Kenji <info@mtkn.jp>
Date: Fri, 23 Dec 2022 09:53:42 +0900
receive resize event
Diffstat:
| M | ex3/Makefile | | | 2 | +- |
| D | ex3/ex2.c | | | 215 | ------------------------------------------------------------------------------- |
| A | ex3/ex3.c | | | 229 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
3 files changed, 230 insertions(+), 216 deletions(-)
diff --git a/ex3/Makefile b/ex3/Makefile
@@ -2,7 +2,7 @@ INCS=-I/usr/X11R6/include
CFLAGS=-Wall -Wextra -std=c11
LIBS=-L/usr/X11R6/lib -lX11 -lXext -lm
IN=*.c
-OUT=ex2
+OUT=ex3
all: $(IN)
$(CC) $(INCS) $(CFLAGS) -o $(OUT) $(IN) $(LIBS)
diff --git a/ex3/ex2.c b/ex3/ex2.c
@@ -1,215 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-#include <unistd.h>
-#include <math.h>
-
-#include <X11/Xlib.h>
-
-/* macros */
-#define INIT_WIDTH 800
-#define INIT_HEIGHT 600
-#define FPS 60
-
-/*
-#define COUNT_FPS
-*/
-
-
-enum Keys {
- Key_D,
- Key_S,
- Key_A,
- Key_W,
- Key_Space,
- Num_Key, //number of keys in this enum
-};
-enum Key_State {
- Key_Up,
- Key_Down,
-};
-
-/* variables */
-Display *display;
-Window window;
-unsigned int win_width = INIT_WIDTH, win_height = INIT_HEIGHT;
-GC gc;
-Atom wm_delete_window;
-int key_state[Num_Key];
-int quit;
-float px = 200, py = 200;
-float vx = 0, vy = 0;
-int width = 40, height = 40;
-
-
-/* function prototypes */
-void setup(void);
-void cleanup(void);
-void handle_inputs(void);
-
-
-void
-setup(void)
-{
- if ((display = XOpenDisplay(NULL)) == NULL){
- fprintf(stderr, "ERROR: could not open display\n");
- exit(1);
- }
- window = XCreateSimpleWindow(
- display,
- XDefaultRootWindow(display),
- 0, 0,
- win_width, win_height,
- 0, 0,
- 0);
- XStoreName(display, window, "UNKO");
- gc = XCreateGC(display, window, 0, NULL);
-
- wm_delete_window = XInternAtom(display,
- "WM_DELETE_WINDOW", False);
- XSetWMProtocols(display, window, &wm_delete_window, 1);
-
- XSelectInput(display, window,
- ExposureMask|KeyPressMask|KeyReleaseMask);
-
- XSetForeground(display, gc, 0x00FFFF);
- XMapWindow(display, window);
-}
-
-void
-handle_inputs(void)
-{
- XEvent event;
- while (XPending(display) > 0) {
- XNextEvent(display, &event);
- switch (event.type) {
- case KeyPress: {
- switch (XLookupKeysym(&event.xkey, 0)) {
- case 'q':
- quit = 1;
- break;
- case 'd':
- key_state[Key_D] = Key_Down;
- break;
- case 'a':
- key_state[Key_A] = Key_Down;
- break;
- case 'w':
- key_state[Key_W] = Key_Down;
- break;
- case 's':
- key_state[Key_S] = Key_Down;
- break;
- default:
- break;
- }
- } break;
- case KeyRelease: {
- switch (XLookupKeysym(&event.xkey, 0)) {
- case 'd':
- key_state[Key_D] = Key_Up;
- break;
- case 'a':
- key_state[Key_A] = Key_Up;
- break;
- case 'w':
- key_state[Key_W] = Key_Up;
- break;
- case 's':
- key_state[Key_S] = Key_Up;
- break;
- default:
- break;
- }
- } break;
- case ClientMessage: {
- if ((Atom) event.xclient.data.l[0] == wm_delete_window) {
- quit = 1;
- }
- } break;
- default:
- break;
- }
- }
-
-
- vx = vy = 0;
- if (key_state[Key_D] == Key_Down)
- vx += 300;
- if (key_state[Key_A] == Key_Down)
- vx += -300;
- if (key_state[Key_S] == Key_Down)
- vy += 300;
- if (key_state[Key_W] == Key_Down)
- vy += -300;
-
-}
-
-void
-cleanup(void)
-{
- XCloseDisplay(display);
-}
-
-int
-main(void)
-{
- long t0, t1, dt;
-#ifdef COUNT_FPS
- int fps_count = 0;
-#endif
- struct timespec ts;
-
- setup();
- quit = 0;
- clock_gettime(CLOCK_MONOTONIC, &ts);
- t0 = ts.tv_nsec;
-
- while (!quit){
- handle_inputs();
-
- // fix fps
- dt = 0;
- while (dt < 1.0 * 1000 * 1000 * 1000 / FPS){
- clock_gettime(CLOCK_MONOTONIC, &ts);
- t1 = ts.tv_nsec;
- dt = t1 > t0 ? t1 - t0 : t1 - t0 + 1000 * 1000 * 1000;
- }
-#ifdef COUNT_FPS
- // count fps.
- // simple but not precise.
- fps_count++;
- if (t1 < t0){
- printf("fps: %u\n", fps_count);
- fps_count = 0;
- }
-#endif
-
- clock_gettime(CLOCK_MONOTONIC, &ts);
- t0 = ts.tv_nsec;
-
- px = px + vx * dt / 1000 / 1000 / 1000;
- py = py + vy * dt / 1000 / 1000 / 1000;
- // bind within the window
- if (px < 0)
- px = 0;
- if (win_width < px + width)
- px = win_width - width;
- if (py < 0)
- py = 0;
- if (win_height < py + height)
- py = win_height - height;
-
- XClearArea(display, window,
- 0, 0, // position
- win_width, win_height, // width and height
- False);
- XFillRectangle(display, window, gc,
- px, py, // position
- width, height); // width and height
-
- }
-
- cleanup();
- return 0;
-}
diff --git a/ex3/ex3.c b/ex3/ex3.c
@@ -0,0 +1,229 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <math.h>
+
+#include <X11/Xlib.h>
+
+/* macros */
+#define INIT_WIDTH 800
+#define INIT_HEIGHT 600
+#define FPS 60
+
+/*
+#define COUNT_FPS
+*/
+
+
+enum Keys {
+ Key_D,
+ Key_S,
+ Key_A,
+ Key_W,
+ Key_Space,
+ Num_Key, //number of keys in this enum
+};
+enum Key_State {
+ Key_Up,
+ Key_Down,
+};
+
+/* variables */
+Display *display;
+Window window;
+unsigned int win_width = INIT_WIDTH, win_height = INIT_HEIGHT;
+GC gc;
+Atom wm_delete_window;
+int key_state[Num_Key];
+int quit;
+float px = 200, py = 200;
+float vx = 0, vy = 0;
+int width = 40, height = 40;
+
+
+/* function prototypes */
+void setup(void);
+void cleanup(void);
+void receive_events(void);
+void handle_inputs(void);
+
+
+void
+setup(void)
+{
+ if ((display = XOpenDisplay(NULL)) == NULL){
+ fprintf(stderr, "ERROR: could not open display\n");
+ exit(1);
+ }
+ window = XCreateSimpleWindow(
+ display,
+ XDefaultRootWindow(display),
+ 0, 0,
+ win_width, win_height,
+ 0, 0,
+ 0);
+ XStoreName(display, window, "UNKO");
+ gc = XCreateGC(display, window, 0, NULL);
+
+ wm_delete_window = XInternAtom(display,
+ "WM_DELETE_WINDOW", False);
+ XSetWMProtocols(display, window, &wm_delete_window, 1);
+
+ XSelectInput(display, window,
+ ExposureMask|KeyPressMask|KeyReleaseMask);
+
+ XSetForeground(display, gc, 0x00FFFF);
+ XMapWindow(display, window);
+}
+
+void
+receive_events(void)
+{
+ XEvent event;
+ XWindowAttributes wattr;
+
+
+
+ while (XPending(display) > 0) {
+ XNextEvent(display, &event);
+ switch (event.type) {
+ case Expose: {
+ XGetWindowAttributes(display, window, &wattr);
+ win_width = wattr.width;
+ win_height = wattr.height;
+ } break;
+ case KeyPress: {
+ switch (XLookupKeysym(&event.xkey, 0)) {
+ case 'q':
+ quit = 1;
+ break;
+ case 'd':
+ key_state[Key_D] = Key_Down;
+ break;
+ case 'a':
+ key_state[Key_A] = Key_Down;
+ break;
+ case 'w':
+ key_state[Key_W] = Key_Down;
+ break;
+ case 's':
+ key_state[Key_S] = Key_Down;
+ break;
+ default:
+ break;
+ }
+ } break;
+ case KeyRelease: {
+ switch (XLookupKeysym(&event.xkey, 0)) {
+ case 'd':
+ key_state[Key_D] = Key_Up;
+ break;
+ case 'a':
+ key_state[Key_A] = Key_Up;
+ break;
+ case 'w':
+ key_state[Key_W] = Key_Up;
+ break;
+ case 's':
+ key_state[Key_S] = Key_Up;
+ break;
+ default:
+ break;
+ }
+ } break;
+ case ClientMessage: {
+ if ((Atom) event.xclient.data.l[0] == wm_delete_window) {
+ quit = 1;
+ }
+ } break;
+ default:
+ break;
+ }
+ }
+}
+
+void
+handle_inputs(void)
+{
+ vx = vy = 0;
+ if (key_state[Key_D] == Key_Down)
+ vx += 300;
+ if (key_state[Key_A] == Key_Down)
+ vx += -300;
+ if (key_state[Key_S] == Key_Down)
+ vy += 300;
+ if (key_state[Key_W] == Key_Down)
+ vy += -300;
+
+}
+
+void
+cleanup(void)
+{
+ XCloseDisplay(display);
+}
+
+int
+main(void)
+{
+ long t0, t1, dt;
+#ifdef COUNT_FPS
+ int fps_count = 0;
+#endif
+ struct timespec ts;
+
+ setup();
+ quit = 0;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ t0 = ts.tv_nsec;
+
+ while (!quit){
+ receive_events();
+ handle_inputs();
+
+ // fix fps
+ dt = 0;
+ while (dt < 1.0 * 1000 * 1000 * 1000 / FPS){
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ t1 = ts.tv_nsec;
+ dt = t1 > t0 ? t1 - t0 : t1 - t0 + 1000 * 1000 * 1000;
+ }
+#ifdef COUNT_FPS
+ // count fps.
+ // simple but not precise.
+ fps_count++;
+ if (t1 < t0){
+ printf("fps: %u\n", fps_count);
+ fps_count = 0;
+ }
+#endif
+
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ t0 = ts.tv_nsec;
+
+ px = px + vx * dt / 1000 / 1000 / 1000;
+ py = py + vy * dt / 1000 / 1000 / 1000;
+ // bind within the window
+ if (px < 0)
+ px = 0;
+ if (win_width < px + width)
+ px = win_width - width;
+ if (py < 0)
+ py = 0;
+ if (win_height < py + height)
+ py = win_height - height;
+
+ XClearArea(display, window,
+ 0, 0, // position
+ win_width, win_height, // width and height
+ False);
+ XFillRectangle(display, window, gc,
+ px, py, // position
+ width, height); // width and height
+
+ }
+
+ cleanup();
+ return 0;
+}
