From 0edb71385fa74fcb5af4c30e57517cd217ad4a52 Mon Sep 17 00:00:00 2001
From: szdytom <szdytom@qq.com>
Date: Tue, 5 Aug 2025 16:09:37 +0800
Subject: [PATCH] feat: implement TickSystem for managing world ticks and
 initialize World constructor

Signed-off-by: szdytom <szdytom@qq.com>
---
 core/include/istd_core/world.h |  4 ++++
 core/src/world.cpp             | 39 ++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 core/src/world.cpp

diff --git a/core/include/istd_core/world.h b/core/include/istd_core/world.h
index 3ace3d4..857b93e 100644
--- a/core/include/istd_core/world.h
+++ b/core/include/istd_core/world.h
@@ -2,17 +2,21 @@
 #define ISTD_CORE_WORLD_H
 
 #include "istd_core/room.h"
+#include "tilemap/generation.h"
 #include "tilemap/tilemap.h"
 #include <vector>
 
 namespace istd {
 
 struct World {
+	std::uint32_t tick;
 	TileMap tilemap;
 	std::vector<std::vector<Room>> rooms;
 	entt::registry registry;
 
 	World(std::uint8_t size);
+
+	void generateTilemap(const GenerationConfig &config);
 };
 
 } // namespace istd
diff --git a/core/src/world.cpp b/core/src/world.cpp
new file mode 100644
index 0000000..3875f56
--- /dev/null
+++ b/core/src/world.cpp
@@ -0,0 +1,39 @@
+#include "istd_core/world.h"
+#include "istd_core/system.h"
+#include "tilemap/generation.h"
+
+namespace istd {
+
+namespace {
+
+struct TickSystem : public System {
+	void tick(World &world) const noexcept override {
+		world.tick += 1;
+	}
+
+	std::string_view name() const noexcept override {
+		return "Tick System";
+	}
+};
+
+static const TickSystem tick_system;
+static const SystemRegistry::Registar tick_registrar(
+	System::Precedence::Highest, &tick_system
+);
+
+} // namespace
+
+World::World(std::uint8_t size)
+	: tick(0), tilemap(size), rooms(size, std::vector<Room>(size, {0, 0})) {
+	for (std::uint8_t x = 0; x < size; ++x) {
+		for (std::uint8_t y = 0; y < size; ++y) {
+			rooms[x][y] = {x, y};
+		}
+	}
+}
+
+void World::generateTilemap(const GenerationConfig &config) {
+	map_generate(tilemap, config);
+}
+
+} // namespace istd