Reload game.so without dropping the old handle on failure, reset state via F2

game.cpp

@@ -31,6 +31,7 @@ GameState *InitState() {
     assets.textures[TEX_TARGET_RETICLE] = LoadTexture("./assets/UI/Pointers/02.png");
 
     auto game = new GameState;
+    game->should_reset = false;
     game->assets = assets;
     // TODO: Probably want to use idiomatic C++ here?
     game->knights = (Knight*)calloc(MAX_KNIGHTS, sizeof(Knight));
@@ -114,8 +115,8 @@ void Input(GameState *state) {
         global_debug_mode = !global_debug_mode;
     }
     if (IsKeyPressed(KEY_F2)) {
-        auto new_state = InitState();
-        *state = *new_state;
+        state->should_reset = true;
+        printf("Resetting GameState\n");
     }
 }
 
@@ -291,7 +292,12 @@ extern "C" {
         return Init();
     }
 
-    void game_step(GameState* state) {
+    GameState* game_init_state() {
+        return InitState();
+    }
+
+    void game_step(GameState *state) {
+        try {
             Input(state);
             Update(state);
             BeginDrawing();
@@ -308,8 +314,14 @@ extern "C" {
             }
             EndDrawing();
         }
+        catch (const exception& e) {
+            printf("Exception: %s\n", e.what());
+            TraceLog(LOG_ERROR, "Exception: %s", e.what());
+        }
+    }
 
-    void game_cleanup(GameState* state) {
+    void game_cleanup(GameState *state) {
+        // free(state->assets.textures);
         delete state;
         printf("Cleaning Up\n");
         CloseWindow();

game.h

@@ -49,6 +49,7 @@ struct Assets {
 };
 
 struct GameState {
+    bool should_reset;
     Camera2D camera;
     int frame_count;
     Point camera_position;
@@ -73,6 +74,6 @@ struct GameState {
             UnloadTexture(assets.textures[i]);
         }
         free(assets.textures);
-        printf("I freed the stuff?\n");
+        printf("Freeing GameState memory\n");
     }
 };

main.cpp

@@ -3,14 +3,13 @@
 #include <sys/stat.h>
 #include <cstdio>
 
-struct GameState;
+#include "game.h"
 
 struct GameApi {
-    struct GameState *(*init)();
+    GameState *(*init)();
+    GameState *(*init_state)();
     void (*step) (GameState *state);
-    void (*finalize) (GameState *state);
-    void (*reload) (GameState *state);
-    void (*unload) (GameState *state);
+    void (*cleanup) (GameState *state);
     bool (*window_should_close)();
 };
 
@@ -38,20 +37,21 @@ bool load_game_api(Game* game) {
         return false;
     }
     
-    if (game->gamelib_handle) {
-        dlclose(game->gamelib_handle);
-    }
-    
-    game->gamelib_handle = dlopen(lib_path, RTLD_NOW);
-
-    if (!game->gamelib_handle) {
+    void *gamelib_handle = dlopen(lib_path, RTLD_NOW);
+    if (!gamelib_handle) {
         printf("Failed to load game.so: %s\n", dlerror());
         return false;
     }
 
+    if (game->gamelib_handle) {
+        dlclose(game->gamelib_handle);
+    }
+    game->gamelib_handle = gamelib_handle;
+    
     game->api.init = (GameState*(*)())dlsym(game->gamelib_handle, "game_init");
+    game->api.init_state = (GameState*(*)())dlsym(game->gamelib_handle, "game_init_state");
     game->api.step = (void(*)(GameState*))dlsym(game->gamelib_handle, "game_step");
-    game->api.finalize = (void(*)(GameState*))dlsym(game->gamelib_handle, "game_cleanup");
+    game->api.cleanup = (void(*)(GameState*))dlsym(game->gamelib_handle, "game_cleanup");
     game->api.window_should_close = (bool(*)())dlsym(game->gamelib_handle, "window_should_close");
     
     game->last_write_time = write_time;
@@ -60,7 +60,7 @@ bool load_game_api(Game* game) {
 }
 
 int main(void) {
-    Game game;
+    Game game = {};
 
     load_game_api(&game);
 
@@ -70,9 +70,14 @@ int main(void) {
         // float dt = GetFrameTime();
         load_game_api(&game);
 
+        if (game.state->should_reset) {
+            delete game.state;
+            game.state = game.api.init_state();
+        }
+
         game.api.step(game.state);
     }
 
-    game.api.finalize(game.state);
+    game.api.cleanup(game.state);
     return 0;
 }