1 files changed, 123 insertions, 0 deletions
diff --git a/server/spymodule.c b/server/spymodule.c
new file mode 100644
index 0000000..a33487a
--- /dev/null
+++ b/server/spymodule.c
@@ -0,0 +1,123 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+#include <bits/time.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+static PyObject *spy_easy(PyObject *self, PyObject *args);
+static PyObject *spy_hard(PyObject *self, PyObject *args);
+
+static PyMethodDef spy_methods[] = {
+	{ "easy", spy_easy, METH_VARARGS, "Play Spy Game (Easy)" },
+	{ "hard", spy_hard, METH_VARARGS, "Play Spy Game (Hard)" },
+	{ 0 }
+};
+
+static struct PyModuleDef spy_module = {
+	PyModuleDef_HEAD_INIT,
+	"spy",
+	"Spy Game Module",
+	-1,
+	spy_methods,
+};
+
+PyObject *
+spy_game(PyObject *self, PyObject *args, unsigned count)
+{
+	char user_input[256];
+	uint8_t numbers[count];
+	struct timespec start, end;
+	uint64_t start_ns, end_ns;
+	uint64_t total_ns, total_ok;
+	size_t swap1, swap2;
+	size_t swap1_in, swap2_in;
+	size_t i, k;
+	bool ok;
+
+	if (!PyArg_ParseTuple(args, ""))
+		return NULL;
+
+	printf("Ready? ");
+	getchar();
+	printf("\n");
+
+	total_ok = 0;
+	total_ns = 0;
+	for (i = 0; i < 8; i++) {
+		for (k = 0; k < count; k++)
+			numbers[k] = k;
+
+		swap1 = rand() % count;
+		swap2 = (swap1 + 1 + rand() % (count - 1)) % count;
+
+		numbers[swap1] ^= numbers[swap2];
+		numbers[swap2] ^= numbers[swap1];
+		numbers[swap1] ^= numbers[swap2];
+
+		printf("Before: ");
+		for (k = 0; k < count; k++)
+			printf("%u ", numbers[k]);
+		printf("\n");
+
+		clock_gettime(CLOCK_REALTIME, &start);
+		start_ns = start.tv_nsec + start.tv_sec * 1e9;
+
+		fflush(stdin);
+
+		printf("Index 1: ");
+		(void)fgets(user_input, sizeof(user_input), stdin);
+		swap1_in = strtoull(user_input, NULL, 10);
+
+		printf("Index 2: ");
+		(void)fgets(user_input, sizeof(user_input), stdin);
+		swap2_in = strtoull(user_input, NULL, 10);
+
+		clock_gettime(CLOCK_REALTIME, &end);
+		end_ns = end.tv_nsec + end.tv_sec * 1e9;
+
+		numbers[swap1_in] ^= numbers[swap2_in];
+		numbers[swap2_in] ^= numbers[swap1_in];
+		numbers[swap1_in] ^= numbers[swap2_in];
+
+		printf("After: ");
+		for (k = 0; k < count; k++)
+			printf("%u ", numbers[k]);
+		printf("\n");
+
+		ok = (swap1_in == swap1 && swap2_in == swap2)
+			|| (swap1_in == swap2 && swap2_in == swap1);
+		printf("You answered %s in %lu nanoseconds!\n",
+			ok ? "correctly" : "incorrectly",
+			end_ns - start_ns);
+		printf("\n");
+
+		total_ok += ok;
+		total_ns += end_ns - start_ns;
+	}
+
+	if (count == 256 && total_ok == 5 && total_ns < 1000) {
+		return PyUnicode_FromString("REWARD");
+	} else if (count == 10 && total_ok == 5 && total_ns < 1e9 * 60) {
+		return PyUnicode_FromString("MOTIVATE");
+	}
+
+	return PyUnicode_FromString("SLOW");
+}
+
+PyObject *
+spy_easy(PyObject *self, PyObject *args)
+{
+	return spy_game(self, args, 10);
+}
+
+PyObject *
+spy_hard(PyObject *self, PyObject *args)
+{
+	return spy_game(self, args, 256);
+}
+
+PyMODINIT_FUNC PyInit_spy(void) {
+	setvbuf(stdout, NULL, _IONBF, 0);
+	return PyModule_Create(&spy_module);
+};