Schedule level pool to be freed at a later time

data/dynos.cpp.h

@@ -966,6 +966,7 @@ void DynOS_MovtexQC_ModShutdown();
 struct GraphNode* DynOS_Model_LoadGeo(enum ModelPool aModelPool, void* aAsset);
 struct GraphNode* DynOS_Model_LoadDl(enum ModelPool aModelPool, u8 aLayer, void* aAsset);
 void DynOS_Model_ClearPool(enum ModelPool aModelPool);
+void DynOS_Model_Update();
 
 //
 // Bin

data/dynos_c.cpp

@@ -14,6 +14,7 @@ void *dynos_update_cmd(void *cmd) {
 }
 
 void dynos_update_gfx() {
+    DynOS_Model_Update();
     return DynOS_UpdateGfx();
 }
 

data/dynos_mgr_models.cpp

@@ -1,4 +1,5 @@
 #include <map>
+#include <vector>
 #include "dynos.cpp.h"
 
 extern "C" {
@@ -6,8 +7,14 @@ extern "C" {
 #include "engine/graph_node.h"
 }
 
+struct ScheduledFreePool {
+    struct DynamicPool* pool;
+    u32 timeout;
+};
+
 static struct DynamicPool* sModelPools[MODEL_POOL_MAX] = { 0 };
 static std::map<void*, struct GraphNode*> sModelMap[MODEL_POOL_MAX];
+static std::vector<struct ScheduledFreePool> sPoolsToFree;
 
 struct GraphNode* DynOS_Model_LoadGeo(enum ModelPool aModelPool, void* aAsset) {
     // sanity check pool
@@ -58,11 +65,27 @@ struct GraphNode* DynOS_Model_LoadDl(enum ModelPool aModelPool, u8 aLayer, void*
 void DynOS_Model_ClearPool(enum ModelPool aModelPool) {
     if (!sModelPools[aModelPool]) { return; }
 
-    // free and realloc pool
-    dynamic_pool_free_pool(sModelPools[aModelPool]);
+    // schedule pool to be freed
+    sPoolsToFree.push_back({
+        .pool = sModelPools[aModelPool],
+        .timeout = 30
+    });
+
+    // clear pointer
     sModelPools[aModelPool] = NULL;
 
     // clear map
     auto& map = sModelMap[aModelPool];
     map.clear();
 }
+
+void DynOS_Model_Update() {
+    for (auto it = sPoolsToFree.begin(); it != sPoolsToFree.end(); ) {
+        if (--it->timeout <= 0) {
+            dynamic_pool_free_pool(it->pool);
+            it = sPoolsToFree.erase(it);
+        } else {
+            it++;
+        }
+    }
+}

data/dynos_warps.cpp

@@ -185,7 +185,7 @@ void DynOS_Warp_SetParam(s32 aLevel, s32 aIndex) {
         break;
 
     case LEVEL_WDW:
-        if (gEnvironmentRegions) {
+        if (gEnvironmentRegions && gEnvironmentRegionsLength > 6) {
         switch (aIndex) {
             case 1: gEnvironmentRegions[6] = *gEnvironmentLevels =   31; gWdwWaterLevelSet = 1; break;
             case 2: gEnvironmentRegions[6] = *gEnvironmentLevels = 1024; gWdwWaterLevelSet = 1; break;