Added some comments and made the debug-info-text display more info + more relevant info

src/instance/game_instance.c

@@ -45,16 +45,18 @@ bool game_instance_host_session(Game_Instance *instance, const Game_Session_Sett
             instance->game_session = NULL;
             return false;
         }
-        
+
         instance->local_player_id = host_player_id;
     }
     else {
         game_session_init(instance->game_session, settings);
 
         for(uint32_t i = 0; i < settings.max_players; i++) {
-            // When playing locally, create the player(s) here.
+            // When playing locally/offline, create the player(s) here.
             assert(game_session_create_player(instance->game_session, &instance->local_player_id)); // TODO: SS - Fix me! Always assigning the newest player to be the active 'local_player_id' which isn't correct.
         }
+
+        printf("Created %u local players.\n", settings.max_players);
     }
         
     return true;
@@ -78,12 +80,43 @@ bool game_instance_join_session(Game_Instance *instance, const char *session_id)
     instance->game_session = (Game_Session *)calloc(1, sizeof(Game_Session)); // LEAK
 
     if(!networking_try_join(&instance->game_networking, instance->game_session, session_id)) {
+        free(instance->game_session);
         return false;
     }
 
     return true;
 }
 
+void game_instance_stop_session(Game_Instance *instance) {
+    assert(instance != NULL);
+    assert(instance->game_session != NULL);
+
+    Game_Session *session = instance->game_session;
+    Game_Networking *networking = &instance->game_networking;
+
+    printf("Stopping session ...\n");
+
+    if(session->settings.online) { // Are we online? Offline?
+        printf("Session is online (session-id: '%s', host? %s).\n", networking->session_id, networking->is_host ? "true" : "false");
+
+        if(networking->is_host) {
+            // Stop hosting.
+            networking_stop_hosting(networking);
+        }
+        else {
+            // Disconnect from the host.
+            assert(false); // TEMP
+        }
+    }
+    else {
+        printf("Session is offline/local.\n");
+    }
+
+    game_session_dispose(instance->game_session);
+    free(instance->game_session);
+    instance->game_session = NULL;
+}
+
 bool game_instance_push_local_input(Game_Instance *instance, Simulation_Game_Input input) {
     return squeue_push(&instance->local_input_queue, (void *)&input);
 }

src/instance/game_instance.h

@@ -9,7 +9,7 @@
 #include "shared/squeue.h"
 
 typedef struct {
-    uint16_t local_player_id;
+    uint16_t local_player_id; // TODO: SS - We need to modify this to support local multiplayer.
     SQueue local_input_queue;
 
     double simulation_accumulator;
@@ -24,7 +24,7 @@ void game_instance_dispose(Game_Instance *instance);
 bool game_instance_host_session(Game_Instance *instance, const Game_Session_Settings settings);
 bool game_instance_join_session(Game_Instance *instance, const char *session_id);
 
-// TODO: SS - stop_session()
+void game_instance_stop_session(Game_Instance *instance);
 
 bool game_instance_push_local_input(Game_Instance *instance, Simulation_Game_Input input);
 bool game_instance_pop_local_input(Game_Instance *instance, Simulation_Game_Input *out_input);

src/presentation/states/state_ingame.c

@@ -279,30 +279,46 @@ static void state_render(Presentation_State *state) {
         // TODO: SS - Switch on 'sim_world->match_state'.
 
         if(ctx->debug_draw_session_details) {
-            char buf[1024];
+            char buf[2048];
-            snprintf(&buf[0], sizeof(buf),
+
+            // Add generic info about the game to the buffer.
+            uint32_t i = snprintf(&buf[0], sizeof(buf),
                 "Match-state: %i\n"
                 "Tick: %lu\n"
                 "\n"
                 "Seed: %u\n"
                 "Level: %ux%u\n"
                 "Tickrate: %.2f\n"
-                "\n"
-
-                // TODO: SS - This should only be shown when playing online. Other things should be shown in the cases below;
-                // When playing offline/singleplayer you can only be one player.
-                // When playing local-multiplayer, you control multiple players from the same computer/client/instance.
-                "Local player: %u (host? %s)\n"
-                "Player count: %u / %u\n"
                 ,
                 sim_world->match_state, sim_world->tick,
                 sim_world->game_world->seed,
                 sim_world->game_world->grid.width, sim_world->game_world->grid.height,
-                session->settings.tickrate,
+                session->settings.tickrate
-                instance->local_player_id, instance->local_player_id == 0 ? "true" : "false", // NOTE: SS - You're the host if you're player 0.
-                game_session_get_amount_of_active_players(session), sim_world->max_players
             );
+            
+            // Now, write info specific to whether you're online or offline.
+            if(session->settings.online) {
+                Game_Networking *networking = &instance->game_networking;
 
+                snprintf(&buf[i], sizeof(buf),
+                    "\n"
+                    "[Online]\n"
+                    "Host: %s\n"
+                    "Session-id: %s\n"
+                    "Client-id: %s\n"
+                    "\n"
+                    "Local player: %u\n"
+                    "Player count: %u / %u\n"
+                    ,
+                    networking->is_host ? "true" : "false",
+                    networking->session_id,
+                    networking->local_client_id,
+                    instance->local_player_id,
+                    game_session_get_amount_of_active_players(session), sim_world->max_players
+                );
+            }
+
+            // Finally, draw the buffer to the screen (with nice shadowing!).
             DrawText(buf, 17, 17, 8, BLACK);
             DrawText(buf, 16, 16, 8, WHITE);
         }
@@ -321,6 +337,7 @@ static void state_exit(Presentation_State *state) {
     UnloadTexture(ctx->texture_snake_head);
     UnloadTexture(ctx->texture_snake_body);
 
+    game_instance_stop_session(ctx->game_instance);
     ctx->game_instance = NULL;
 }
 

src/session/networking.c

@@ -135,6 +135,7 @@ bool networking_try_host(Game_Networking *networking, Game_Session *session, Gam
     }
     
     printf("Started hosting session '%s', local_client_id is '%s'.\n", session_id, local_client_id);
+    networking->is_host = true;
     networking->game_session = session;
     networking->session_id = session_id;
     networking->local_client_id = local_client_id;
@@ -198,6 +199,7 @@ bool networking_try_join(Game_Networking *networking, Game_Session *session, con
     assert(strcmp(result_session_id, session_id) == 0);
 
     printf("Joined session '%s', local_client_id is '%s'.\n", result_session_id, local_client_id);
+    networking->is_host = true;
     networking->game_session = session;
     networking->session_id = result_session_id;
     networking->local_client_id = local_client_id;
@@ -238,7 +240,8 @@ bool networking_stop_hosting(Game_Networking *networking) {
 
     mp_api_destroy(networking->api);
     networking->api = NULL;
-    networking->session = NULL;
+    networking->game_session = NULL;
+    networking->is_host = false;
 
     if(networking->session_id != NULL) {
         free(networking->session_id);

src/session/networking.h

@@ -9,6 +9,8 @@
 typedef struct {
     MultiplayerApi *api;
 
+    bool is_host;
+    
     char *session_id;
     char *local_client_id;