feat(gameplay): add server-side entity movement and AI

Refactor LocalPlayer::update_physical to operate on a passed position, and run speed, physical, and wander AI systems in ServerEntityManager.

include/Cubed/gameplay/local_player.hpp

@@ -156,7 +156,7 @@ private:
     Gait compute_gait() const;
 
     void update_speed(float dt);
-    std::tuple<bool, bool, bool> update_physical(float dt);
+    std::tuple<bool, bool, bool> update_physical(float dt, glm::vec3& pos);
     glm::vec3 get_move_distance(float dt);
 };
 } // namespace Cubed

include/Cubed/gameplay/server_entity_manager.hpp

@@ -45,6 +45,7 @@ private:
     void handle_task();
     void send_all_entities(std::shared_ptr<Session>& session);
     void update_ai();
+    void update_move();
     template <typename... Args>
     EntityID create_entity_in_factory(Args&&... args) {
         auto entity = m_registry.create();

src/gameplay/local_player.cpp

@@ -473,7 +473,7 @@ void LocalPlayer::update_move(float dt) {
     if (m_game_mode == SPECTATOR) {
         player_pos += get_move_distance(dt);
     } else {
-        auto [x, y, z] = update_physical(dt);
+        auto [x, y, z] = update_physical(dt, player_pos);
         if (!x || !z) {
             m_sprinting = false;
         }
@@ -736,22 +736,23 @@ void LocalPlayer::update_speed(float dt) {
     }
 }
 
-std::tuple<bool, bool, bool> LocalPlayer::update_physical(float dt) {
+std::tuple<bool, bool, bool> LocalPlayer::update_physical(float dt,
+                                                          glm::vec3& pos) {
 
     auto distance = get_move_distance(dt);
     auto box = HitboxManager::hitbox(m_hitbox);
     bool x = false;
     bool y = false;
     bool z = false;
-    if (update_x(m_pos.value, distance, m_world, box.box)) {
+    if (update_x(pos, distance, m_world, box.box)) {
-        m_pos.value.x += distance.x;
+        pos.x += distance.x;
         x = true;
     } else {
         m_velocity.value.x = 0.0f;
     }
 
-    if (update_y(m_pos.value, distance, m_world, box.box)) {
+    if (update_y(pos, distance, m_world, box.box)) {
-        m_pos.value.y += distance.y;
+        pos.y += distance.y;
         y = true;
     } else {
         m_velocity.value.y = 0.0f;
@@ -761,8 +762,8 @@ std::tuple<bool, bool, bool> LocalPlayer::update_physical(float dt) {
         }
     }
 
-    if (update_z(m_pos.value, distance, m_world, box.box)) {
+    if (update_z(pos, distance, m_world, box.box)) {
-        m_pos.value.z += distance.z;
+        pos.z += distance.z;
         z = true;
     } else {
         m_velocity.value.z = 0.0f;

src/gameplay/server_entity_manager.cpp

@@ -6,6 +6,9 @@
 #include "Cubed/gameplay/hitbox_manager.hpp"
 #include "Cubed/gameplay/server_world.hpp"
 #include "Cubed/gameplay/session.hpp"
+#include "Cubed/gameplay/systems/physical_system.hpp"
+#include "Cubed/gameplay/systems/speed_system.hpp"
+#include "Cubed/gameplay/systems/wander_ai_system.hpp"
 #include "Cubed/tools/cubed_assert.hpp"
 #include "Cubed/tools/net_utils.hpp"
 using namespace google::protobuf;
@@ -25,8 +28,15 @@ void ServerEntityManager::init() {
 void ServerEntityManager::update() {
     handle_task();
     update_ai();
+    update_move();
 }
 
+void ServerEntityManager::update_ai() { WanderAISystem::update(m_registry); }
+void ServerEntityManager::update_move() {
+    SpeedSystem::update(
+        static_cast<float>(m_world.get_per_tick_time()) / 1000.0f, m_registry);
+    PhysicalSystem::update(m_world, m_registry);
+}
 void ServerEntityManager::handle_task() {
     TaskPair pair;
     while (m_tasks.try_pop(pair)) {