1 files changed, 234 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..0118363
--- /dev/null
+++ b/main.c
@@ -0,0 +1,234 @@
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define NIL (0)
+
+#define internal static
+#define global static
+#define local static
+
+typedef uint64_t u64;
+typedef uint32_t u32;
+typedef uint16_t u16;
+typedef uint8_t u8;
+
+typedef int8_t i8;
+typedef int16_t i16;
+typedef int32_t i32;
+typedef int64_t i64;
+
+typedef float f32;
+typedef double f64;
+
+typedef i16 b16;
+typedef i32 b32;
+
+typedef struct
+{
+  i32 x;
+  i32 y;
+  u32 height;
+  u32 width;
+  u32 border_width;
+  i32 window_depth;
+  u32 window_class;
+  u64 value_mask;
+
+} WindowProperties;
+
+typedef struct
+{
+  i32 x;
+  i32 y;
+  i32 z;
+
+} vertex;
+
+void
+sleep_ms(long ms)
+{
+  struct timespec ts;
+  ts.tv_sec = ms / 1000;
+  ts.tv_nsec = (ms % 1000) * 1000000L;
+
+  while (nanosleep(&ts, &ts))
+  {
+    NULL;
+  }
+}
+
+void
+move_down(double *y)
+{
+  ++*y;
+}
+
+void
+move_up(double *y)
+{
+  --*y;
+}
+
+typedef struct
+{
+  void (*move)(double *a);
+} movement;
+
+int
+main()
+{
+  Display *MainDisplay = XOpenDisplay(NIL);
+
+  Window root = XDefaultRootWindow(MainDisplay);
+  int screen = DefaultScreen(MainDisplay);
+
+  Visual *v = DefaultVisual(MainDisplay, screen);
+
+  XSetWindowAttributes wa = {
+    .background_pixmap = None,
+    .background_pixel = BlackPixel(MainDisplay, DefaultScreen(MainDisplay)),
+    .border_pixmap = CopyFromParent,
+    .border_pixel = 0,
+    .bit_gravity = ForgetGravity,
+    .win_gravity = NorthWestGravity,
+    .backing_store = NotUseful,
+    .backing_planes = 1,
+    .backing_pixel = 0,
+    .save_under = False,
+    .event_mask = {},
+    .do_not_propagate_mask = {},
+    .override_redirect = False,
+    .colormap = CopyFromParent,
+    .cursor = None
+  };
+
+  i32 dp_heigth = DisplayHeight(MainDisplay, screen);
+  i32 dp_width = DisplayWidth(MainDisplay, screen);
+
+  WindowProperties p = {
+
+    .x = dp_width / 2,
+    .y = dp_heigth / 2,
+    .width = (u32)400,
+    .height = (u32)400,
+    .border_width = 0,
+    .window_depth = CopyFromParent,
+    .window_class = CopyFromParent,
+    .value_mask = CWBackPixel,
+
+  };
+
+  Window window =
+    XCreateWindow(
+      MainDisplay,
+      root,
+      p.x,
+      p.y,
+      p.width,
+      p.height,
+      p.border_width,
+      p.window_depth,
+      p.window_class,
+      v,
+      p.value_mask,
+      &wa);
+
+  XSetWindowBorder(MainDisplay, window, 60);
+  XSelectInput(MainDisplay, window, ExposureMask | StructureNotifyMask);
+  XMapWindow(MainDisplay, window);
+
+  double x = p.width / 2;
+  double y = p.height / 2;
+  u32 rect_width = 50;
+  u32 rect_height = 50;
+
+  b16 running = 1;
+
+  u64 color = 0x0000ff00;
+
+  GC gc = XCreateGC(MainDisplay, window, 0, NIL);
+  GC textGc = XCreateGC(MainDisplay, window, 0, NIL);
+  XSetForeground(MainDisplay, gc, color);
+
+  double *pX = &x;
+  double *pY = &y;
+
+  movement m = {
+    .move = move_down
+  };
+
+  while (running)
+  {
+    if (*pY + rect_height >= p.height)
+    {
+      m.move = move_up;
+    }
+    else if (*pY <= 0)
+    {
+      m.move = move_down;
+    }
+
+    char words[] = "working";
+
+    XTextItem ti = {
+      .chars = words,
+      .nchars = (int)strlen(words),
+      .delta = 0,
+      .font = None
+    };
+
+    XClearWindow(MainDisplay, window);
+
+    XDrawText(
+      MainDisplay,
+      window,
+      textGc,
+      50,
+      50,
+      &ti,
+      1);
+
+    XFillRectangle(
+      MainDisplay,
+      window,
+      gc,
+      (i32)*pX,
+      (i32)*pY,
+      rect_height,
+      rect_width);
+
+    XFillRectangle(
+      MainDisplay,
+      window,
+      gc,
+      (i32)*pX + 100,
+      (i32)*pY,
+      rect_height,
+      rect_width);
+
+    XFillRectangle(
+      MainDisplay,
+      window,
+      gc,
+      (i32)*pX - 100,
+      (i32)*pY,
+      rect_height,
+      rect_width);
+
+    m.move(pY);
+
+    sleep_ms(10);
+
+    XFlush(MainDisplay);
+  }
+
+  XFreeGC(MainDisplay, gc);
+  XFreeGC(MainDisplay, textGc);
+  XCloseDisplay(MainDisplay);
+
+  return 0;
+}