things

client/gl.c

@@ -125,6 +125,11 @@ static void cross(double* out, double v00, double v01, double v02, double v10, d
 	out[2] = v00 * v11 - v01 * v10;
 }
 
+/*
+ * v0-v2
+ *  | /
+ * v1/
+ */
 void gl_calc_normal3(double* out, double v00, double v01, double v02, double v10, double v11, double v12, double v20, double v21, double v22) {
 	double v[3];
 	double l = 0;
@@ -141,3 +146,28 @@ void gl_calc_normal3(double* out, double v00, double v01, double v02, double v10
 		out[i] = v[i] / l;
 	}
 }
+
+/*
+ * v0-v3
+ *  | |
+ * v1-v2
+ */
+void gl_calc_normal4(double* out, double v00, double v01, double v02, double v10, double v11, double v12, double v20, double v21, double v22, double v30, double v31, double v32) {
+	double v0[3];
+	double v1[3];
+	int    i;
+	double l = 0;
+
+	gl_calc_normal3(&v0[0], v00, v01, v02, v10, v11, v12, v30, v31, v32);
+	gl_calc_normal3(&v1[0], v10, v11, v12, v20, v21, v22, v30, v31, v32);
+
+	for(i = 0; i < 3; i++) {
+		out[i] = v0[i] + v1[i];
+	}
+
+	l = sqrt(out[0] * out[0] + out[1] * out[1] + out[2] * out[2]);
+
+	for(i = 0; i < 3; i++) {
+		out[i] = out[i] / l;
+	}
+}

client/net.c

@@ -10,6 +10,9 @@ static void on_packet(fishsoup_client_t* client, fishsoup_packet_t* pkt) {
 }
 
 void net_connect(const char* username, const char* hostname, int port) {
+	fishsoup_packet_t pkt;
+	af_packet_join_t  join;
+
 	scene_change(AF_SCENE_CONNECTING);
 	client = fishsoup_client(hostname, port == 0 ? AF_DEFAULT_PORT : port);
 	if(client == NULL) {
@@ -17,7 +20,13 @@ void net_connect(const char* username, const char* hostname, int port) {
 		return;
 	}
 
+	pkt.header.type	  = AF_PACKET_JOIN;
+	pkt.header.length = sizeof(join);
+	pkt.data	  = &join;
+
 	fishsoup_client_on_packet(client, on_packet);
+
+	fishsoup_packet_send(client->fd, &pkt);
 }
 
 void net_poll(void) {

external/libfishsoup

@@ -1 +1 @@
-Subproject commit 19a044c00adf6a839c30337be51c53399adc1f75
+Subproject commit 6b9eb5de20afd9899aec561d43791f9c7aaac534

include/af_client.h

@@ -39,6 +39,7 @@ void gl_render(void);
 void gl_resize(int width, int height);
 void gl_scene_change(void);
 void gl_calc_normal3(double* out, double v00, double v01, double v02, double v10, double v11, double v12, double v20, double v21, double v22);
+void gl_calc_normal4(double* out, double v00, double v01, double v02, double v10, double v11, double v12, double v20, double v21, double v22, double v30, double v31, double v32);
 
 /* gl_font.c */
 void gl_font_init(void);

include/af_common.h

@@ -21,10 +21,14 @@
 #define AF_VERSION "0.0.0"
 #define AF_COPYRIGHT "Copyright (C) 2025 Fishsoup"
 
-/* should be broadcasted! otherwise other user wouldn't know */
-typedef struct af_pkt_join {
-	unsigned char length;
-	char*	      name;
-} af_pkt_join_t;
+enum AF_USER_PACKETS {
+	AF_PACKET_JOIN = FISHSOUP_PACKET_USER
+};
+
+#pragma pack(1)
+typedef struct af_packet_join {
+	char name[256];
+} af_packet_join_t;
+#pragma pack()
 
 #endif

server/main.c

@@ -1,4 +1,10 @@
 #include <af_common.h>
 
 int main(int argc, char** argv) {
+	fishsoup_server_t* server;
+	int		   port = 0;
+
+	server = fishsoup_server(port == 0 ? AF_DEFAULT_PORT : port);
+
+	fishsoup_server_loop(server);
 }