Add death feature in player menu

Author: UltiNaruto

src/UI/PlayerMenu.cpp

@@ -113,11 +113,23 @@ namespace GUI {
         player->setFluidCounter((u32) fluidCounter);
       }
       ImGui::DragFloat("Water depth", player->getDepthUnderWater(), 1.f, -FLT_MAX, FLT_MAX, "%.3f", flags);
+      if (ImGui::Button("Death")) {
+        kill();
+      }
 
       ImGui::TreePop();
     }
   }
 
+  void kill() {
+    CStateManager *stateManager = CStateManager_INSTANCE;
+    CPlayerState *playerState = stateManager->GetPlayerState();
+
+    // game checks for flags & 0x80000000 to tell if player is alive
+    // if flag is set then the player is alive
+    player->flags &= ~0x80000000;
+  }
+
   void loadPos() {
     CStateManager *stateManager = CStateManager_INSTANCE;
     CPlayer *player = stateManager->Player();