colourpicker

Commit: 1c4bffb78ac513af8620c14d6fd3e6cf9770136f
Author: Randy Palamar
Date:   Fri,  7 Jun 2024 20:00:15 -0600

start doing the thing

Diffstat:
A
build.sh
 | 
10
++++++++++
A
colourpicker.c
 | 
12
++++++++++++
A
main.c
 | 
54
++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
util.c
 | 
8
++++++++

4 files changed, 84 insertions(+), 0 deletions(-)
diff --git a/build.sh b/build.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+cflags="-march=native -O2 -Wall"
+ldflags="-lraylib"
+
+libcflags="-march=native -Wall -O2 -fPIC"
+libldflags="$ldflags -shared"
+
+cc $libcflags colourpicker.c -o libcolourpicker.so $libldflags
+cc $cflags -o colourpicker main.c $ldflags
diff --git a/colourpicker.c b/colourpicker.c
@@ -0,0 +1,12 @@
+#include <raylib.h>
+
+void
+do_colour_picker(void)
+{
+		BeginDrawing();
+
+		ClearBackground(BLACK);
+		DrawText("Hello World!", 240, 480, 48, BLUE);
+
+		EndDrawing();
+}
diff --git a/main.c b/main.c
@@ -0,0 +1,54 @@
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <raylib.h>
+#include <sys/stat.h>
+
+#include "util.c"
+
+typedef struct timespec Filetime;
+
+static const char *libname = "./libcolourpicker.so";
+static void *libhandle;
+
+typedef void (do_colour_picker_fn)(void);
+static do_colour_picker_fn *do_colour_picker;
+
+static Filetime
+get_filetime(const char *name)
+{
+	struct stat sb;
+	if (stat(name, &sb) < 0)
+		return (Filetime){0};
+	return sb.st_mtim;
+}
+
+static i32
+compare_filetime(Filetime a, Filetime b)
+{
+	return (a.tv_sec - b.tv_sec) + (a.tv_nsec - b.tv_nsec);
+}
+
+static void
+load_library(const char *lib)
+{
+	libhandle = dlopen(lib, RTLD_NOW|RTLD_LOCAL);
+	do_colour_picker = dlsym(libhandle, "do_colour_picker");
+}
+
+int
+main(void)
+{
+	InitWindow(720, 960, "Colour Picker");
+	load_library(libname);
+
+	Filetime updated_time = get_filetime(libname);
+	while(!WindowShouldClose()) {
+		do_colour_picker();
+
+		Filetime test_time = get_filetime(libname);
+		if (compare_filetime(test_time, updated_time)) {
+			load_library(libname);
+			updated_time = test_time;
+		}
+	}
+}
diff --git a/util.c b/util.c
@@ -0,0 +1,8 @@
+#include <stddef.h>
+#include <stdint.h>
+
+typedef int32_t   i32;
+typedef uint32_t  u32;
+typedef float     f32;
+typedef double    f64;
+typedef ptrdiff_t size;