From 62d46bb8d6d6994a62002b6df5f6b04bf589a5e6 Mon Sep 17 00:00:00 2001
From: p2r3 <p2r3@p2r3.com>
Date: Wed, 13 Aug 2025 18:54:20 +0300
Subject: [PATCH] add daylight cycle and flight

---
 main.c        |  6 ++++++
 src/packets.c | 24 ++++++++++++++++++++++++
 src/packets.h |  2 ++
 3 files changed, 32 insertions(+)

diff --git a/main.c b/main.c
index a81d3b7..2d6ebd2 100644
--- a/main.c
+++ b/main.c
@@ -16,6 +16,8 @@
 #include "src/packets.h"
 #include "src/worldgen.h"
 
+uint64_t world_time = 0;
+
 void handlePacket (int client_fd, int length, int packet_id) {
 
   int state = getClientState(client_fd);
@@ -79,6 +81,9 @@ void handlePacket (int client_fd, int length, int packet_id) {
         }
         sc_setHeldItem(client_fd, player->hotbar);
 
+        sc_playerAbilities(client_fd, 0x01 + 0x04); // invulnerability + flight
+        sc_updateTime(client_fd, world_time);
+
         short _x = player->x / 16, _z = player->z / 16;
         sc_setDefaultSpawnPosition(client_fd, 8, 80, 8);
         sc_startWaitingForChunks(client_fd);
@@ -275,6 +280,7 @@ int main () {
         clock_gettime(CLOCK_REALTIME, &time_now);
         if (time_now.tv_sec - keepalive_last.tv_sec > 10) {
           sc_keepAlive(client_fd);
+          sc_updateTime(client_fd, world_time += 200);
           clock_gettime(CLOCK_REALTIME, &keepalive_last);
         }
       }
diff --git a/src/packets.c b/src/packets.c
index 121771c..ed07eb5 100644
--- a/src/packets.c
+++ b/src/packets.c
@@ -230,6 +230,30 @@ int sc_setDefaultSpawnPosition (int client_fd, long x, long y, long z) {
 
 }
 
+// S->C Player Abilities (clientbound)
+int sc_playerAbilities (int client_fd, uint8_t flags) {
+
+  writeVarInt(client_fd, 10);
+  writeByte(client_fd, 0x39);
+
+  writeByte(client_fd, flags);
+  writeFloat(client_fd, 0.05f);
+  writeFloat(client_fd, 0.1f);
+
+}
+
+// S->C Update Time
+int sc_updateTime (int client_fd, uint64_t ticks) {
+
+  writeVarInt(client_fd, sizeVarInt(0x6A) + 17);
+  writeVarInt(client_fd, 0x6A);
+
+  writeUint64(client_fd, ticks);
+  writeUint64(client_fd, ticks);
+  writeByte(client_fd, true);
+
+}
+
 // S->C Game Event 13 (Start waiting for level chunks)
 int sc_startWaitingForChunks (int client_fd) {
   writeVarInt(client_fd, 6);
diff --git a/src/packets.h b/src/packets.h
index fe427b2..957c127 100644
--- a/src/packets.h
+++ b/src/packets.h
@@ -19,6 +19,8 @@ int sc_loginPlay (int client_fd);
 int sc_synchronizePlayerPosition (int client_fd, double x, double y, double z, float yaw, float pitch);
 int sc_setDefaultSpawnPosition (int client_fd, long x, long y, long z);
 int sc_startWaitingForChunks (int client_fd);
+int sc_playerAbilities (int client_fd, uint8_t flags);
+int sc_updateTime (int client_fd, uint64_t ticks);
 int sc_setCenterChunk (int client_fd, int x, int y);
 int sc_chunkDataAndUpdateLight (int client_fd, int _x, int _z);
 int sc_keepAlive (int client_fd);