From f217acf535a8d3557b08345155d3016e86aa58ae Mon Sep 17 00:00:00 2001
From: kdx <kikoodx@paranoici.org>
Date: Wed, 30 Aug 2023 05:55:28 +0200
Subject: simple data transfer

---
 inc/netcode.h |  6 +++---
 src/main.c    | 15 +++++++++++++++
 src/netcode.c | 14 ++++++++++----
 3 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/inc/netcode.h b/inc/netcode.h
index 148a519..8d79619 100644
--- a/inc/netcode.h
+++ b/inc/netcode.h
@@ -1,12 +1,12 @@
 #pragma once
 #include <stdint.h>
-#include <stddef.h>
 
 int netcode_init_host(uint16_t port);
 int netcode_init_client(const char *host, uint16_t port);
 void netcode_deinit(void);
+int netcode_host(void);
 
-int netcode_send(void *data, size_t size);
-int netcode_recv(void *data, size_t size);
+int netcode_send(void *data, int size);
+int netcode_recv(void *data, int size);
 
 int netcode_ping(void);
diff --git a/src/main.c b/src/main.c
index b56f427..2eacd47 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,20 +11,35 @@ main(int argc, char **argv)
 {
 	(void)argc, (void)argv;
 
+	char p1_white;
 	if (argc > 1) {
 		log_info("client, connecting to %s", argv[1]);
 		if (netcode_init_client(argv[1], 8177)) {
 			log_error("netcode_init_client failed");
 			return -1;
 		}
+		if (netcode_recv(&p1_white, 1)) {
+			log_error("netcode_send failed");
+			netcode_deinit();
+			return -1;
+		}
 	} else {
 		log_info("host");
 		if (netcode_init_host(8177)) {
 			log_error("netcode_init_host failed");
 			return -1;
 		}
+		srand(time(NULL));
+		p1_white = rand() % 2;
+		if (netcode_send(&p1_white, 1)) {
+			log_error("netcode_send failed");
+			netcode_deinit();
+			return -1;
+		}
 	}
 
+	log_info("i'm %s", (p1_white ^ netcode_host()) ? "black" : "white");
+
 	if (TZR_Init(.width=DWIDTH, .height=DHEIGHT, .target_fps=FPS))
 		return 1;
 	if (atexit(deinit)) {
diff --git a/src/netcode.c b/src/netcode.c
index 5ae5990..3b77fa5 100644
--- a/src/netcode.c
+++ b/src/netcode.c
@@ -81,9 +81,15 @@ netcode_deinit(void)
 }
 
 int
-netcode_send(void *data, size_t size)
+netcode_host(void)
 {
-	if (SDLNet_TCP_Send(_sock_other, data, size) < 0) {
+	return (_sock_host != NULL);
+}
+
+int
+netcode_send(void *data, int size)
+{
+	if (SDLNet_TCP_Send(_sock_other, data, size) != size) {
 		log_error("%s", SDLNet_GetError());
 		return -1;
 	}
@@ -91,9 +97,9 @@ netcode_send(void *data, size_t size)
 }
 
 int
-netcode_recv(void *data, size_t size)
+netcode_recv(void *data, int size)
 {
-	if (SDLNet_TCP_Recv(_sock_other, data, size) < 0) {
+	if (SDLNet_TCP_Recv(_sock_other, data, size) != size) {
 		log_error("%s", SDLNet_GetError());
 		return -1;
 	}
-- 
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