From f210a86c1406ccc6dfd6f14181dd7a1274ee0de4 Mon Sep 17 00:00:00 2001
From: untodesu <kirill@untode.su>
Date: Fri, 12 Sep 2025 15:09:01 +0500
Subject: Random ticking? In my game?! Hell yeah!

---
 game/server/world/CMakeLists.txt |  2 ++
 game/server/world/random_tick.cc | 40 ++++++++++++++++++++++++++++++++++++++++
 game/server/world/random_tick.hh | 14 ++++++++++++++
 3 files changed, 56 insertions(+)
 create mode 100644 game/server/world/random_tick.cc
 create mode 100644 game/server/world/random_tick.hh

(limited to 'game/server/world')

diff --git a/game/server/world/CMakeLists.txt b/game/server/world/CMakeLists.txt
index e8fd4be..58a2216 100644
--- a/game/server/world/CMakeLists.txt
+++ b/game/server/world/CMakeLists.txt
@@ -2,6 +2,8 @@ target_sources(vserver PRIVATE
     "${CMAKE_CURRENT_LIST_DIR}/inhabited.hh"
     "${CMAKE_CURRENT_LIST_DIR}/overworld.cc"
     "${CMAKE_CURRENT_LIST_DIR}/overworld.hh"
+    "${CMAKE_CURRENT_LIST_DIR}/random_tick.cc"
+    "${CMAKE_CURRENT_LIST_DIR}/random_tick.hh"
     "${CMAKE_CURRENT_LIST_DIR}/universe.cc"
     "${CMAKE_CURRENT_LIST_DIR}/universe.hh"
     "${CMAKE_CURRENT_LIST_DIR}/unloader.cc"
diff --git a/game/server/world/random_tick.cc b/game/server/world/random_tick.cc
new file mode 100644
index 0000000..c5fa47c
--- /dev/null
+++ b/game/server/world/random_tick.cc
@@ -0,0 +1,40 @@
+#include "server/pch.hh"
+
+#include "server/world/random_tick.hh"
+
+#include "core/config/number.hh"
+
+#include "core/io/config_map.hh"
+
+#include "shared/world/chunk.hh"
+#include "shared/world/dimension.hh"
+#include "shared/world/voxel.hh"
+
+#include "shared/coord.hh"
+
+#include "server/globals.hh"
+
+static config::Int random_tick_speed(2, 1, 1000);
+static std::mt19937_64 random_source;
+
+void world::random_tick::init(void)
+{
+    globals::server_config.add_value("world.random_tick_speed", random_tick_speed);
+
+    random_source.seed(std::random_device {}());
+}
+
+void world::random_tick::tick(const chunk_pos& cpos, Chunk* chunk)
+{
+    assert(chunk);
+
+    for(int i = 0; i < random_tick_speed.get_value(); ++i) {
+        auto voxel_index = random_source() % CHUNK_VOLUME;
+        auto lpos = coord::to_local(voxel_index);
+        auto vpos = coord::to_voxel(cpos, lpos);
+
+        if(auto voxel = chunk->get_voxel(lpos)) {
+            voxel->on_tick(chunk->get_dimension(), vpos);
+        }
+    }
+}
diff --git a/game/server/world/random_tick.hh b/game/server/world/random_tick.hh
new file mode 100644
index 0000000..4ef1691
--- /dev/null
+++ b/game/server/world/random_tick.hh
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "shared/types.hh"
+
+namespace world
+{
+class Chunk;
+} // namespace world
+
+namespace world::random_tick
+{
+void init(void);
+void tick(const chunk_pos& cpos, Chunk* chunk);
+} // namespace world::random_tick
-- 
cgit