Add support to reload the config (#868)

dPhysics/dpGrid.cpp

@@ -6,6 +6,7 @@
 dpGrid::dpGrid(int numCells, int cellSize) {
 	NUM_CELLS = numCells;
 	CELL_SIZE = cellSize;
+	m_DeleteGrid = true;
 
 	//dumb method but i can't be bothered
 
@@ -23,6 +24,7 @@ dpGrid::dpGrid(int numCells, int cellSize) {
 }
 
 dpGrid::~dpGrid() {
+	if (!this->m_DeleteGrid) return;
 	for (auto& x : m_Cells) { //x
 		for (auto& y : x) { //y
 			for (auto en : y) {

dPhysics/dpGrid.h

@@ -23,6 +23,15 @@ public:
 
 	void Update(float deltaTime);
 
+	/**
+	 * Sets the delete grid parameter to value.  When false, the grid will not clean up memory.
+	 *
+	 * @param value Whether or not to delete entities on deletion of the grid.
+	 */
+	void SetDeleteGrid(bool value) { this->m_DeleteGrid = value; };
+
+	std::vector<std::vector<std::forward_list<dpEntity*>>> GetCells() { return this->m_Cells; };
+
 private:
 	void HandleEntity(dpEntity* entity, dpEntity* other);
 	void HandleCell(int x, int z, float deltaTime);
@@ -31,4 +40,5 @@ private:
 	//cells on X, cells on Y for that X, then another vector that contains the entities within that cell.
 	std::vector<std::vector<std::forward_list<dpEntity*>>> m_Cells;
 	std::map<LWOOBJID, dpEntity*> m_GargantuanObjects;
+	bool m_DeleteGrid = true;
 };

dPhysics/dpWorld.cpp

@@ -9,7 +9,7 @@
 #include "dLogger.h"
 #include "dConfig.h"
 
-void dpWorld::Initialize(unsigned int zoneID) {
+void dpWorld::Initialize(unsigned int zoneID, bool generateNewNavMesh) {
 	phys_sp_tilecount = std::atoi(Game::config->GetValue("phys_sp_tilecount").c_str());
 	phys_sp_tilesize = std::atoi(Game::config->GetValue("phys_sp_tilesize").c_str());
 
@@ -21,13 +21,37 @@ void dpWorld::Initialize(unsigned int zoneID) {
 		m_Grid = new dpGrid(phys_sp_tilecount, phys_sp_tilesize);
 	}
 
-	m_NavMesh = new dNavMesh(zoneID);
+	if (generateNewNavMesh) m_NavMesh = new dNavMesh(zoneID);
 
 	Game::logger->Log("dpWorld", "Physics world initialized!");
+	m_ZoneID = zoneID;
+}
+
+void dpWorld::Reload() {
+	if (m_Grid) {
+		m_Grid->SetDeleteGrid(false);
+		auto oldGridCells = m_Grid->GetCells();
+		delete m_Grid;
+		m_Grid = nullptr;
+
+		Initialize(m_ZoneID, false);
+		for (auto column : oldGridCells) {
+			for (auto row : column) {
+				for (auto entity : row) {
+					AddEntity(entity);
+				}
+			}
+		}
+		Game::logger->Log("dpWorld", "Successfully reloaded physics world!");
+	} else {
+		Game::logger->Log("dpWorld", "No physics world to reload!");
+	}
 }
 
 dpWorld::~dpWorld() {
 	if (m_Grid) {
+		// Triple check this is true
+		m_Grid->SetDeleteGrid(true);
 		delete m_Grid;
 		m_Grid = nullptr;
 	}
@@ -103,14 +127,14 @@ bool dpWorld::ShouldUseSP(unsigned int zoneID) {
 	// Only large maps should be added as tiling likely makes little difference on small maps.
 
 	switch (zoneID) {
-		case 1100: // Avant Gardens
-		case 1200: // Nimbus Station
-		case 1300: // Gnarled Forest
-		case 1400: // Forbidden Valley
-		case 1800: // Crux Prime
-		case 1900: // Nexus Tower
-		case 2000: // Ninjago
-			return true;
+	case 1100: // Avant Gardens
+	case 1200: // Nimbus Station
+	case 1300: // Gnarled Forest
+	case 1400: // Forbidden Valley
+	case 1800: // Crux Prime
+	case 1900: // Nexus Tower
+	case 2000: // Ninjago
+		return true;
 	}
 
 	return false;

dPhysics/dpWorld.h

@@ -19,7 +19,8 @@ class dpGrid;
 
 class dpWorld : public Singleton<dpWorld> {
 public:
-	void Initialize(unsigned int zoneID);
+	void Initialize(unsigned int zoneID, bool generateNewNavMesh = true);
+	void Reload();
 
 	~dpWorld();
 
@@ -43,4 +44,5 @@ private:
 	std::vector<dpEntity*> m_DynamicEntites;
 
 	dNavMesh* m_NavMesh = nullptr;
+	uint32_t m_ZoneID = 0;
 };