# Mermaid test

flowchart TB
    %% ---------- Top-level initialisation ----------
    A((Start))
    B[Init]
    C[Run]
    A --> B --> C

    %% ---------- Main loop ----------
    D{Is program running?}
    C --> D
    D -- No --> E((Quit))

    %% ---------- User-interaction decisions ----------
    D -- Yes --> F{User select another map?}

    %% --- Branch 1 : new map ---
    F -- Yes --> F1[is_solution_running = false]
    F1 --> F2[is_search_visualizing = false]
    F2 --> F3[Update current state =\ninitial state from selected map]
    F3 --> SR

    %% --- Branch 2 : new algorithm ---
    F -- No --> G{User select another algorithm?}
    G -- Yes --> G1[is_solution_running = false]
    G1 --> G2[is_search_visualizing = false]
    G2 --> G3[Reset current state =\ninitial state and get selected algorithm]
    G3 --> SR

    %% --- Branch 3 : find solution ---
    G -- No --> H{User choose to find solution?}
    H -- Yes --> H1[is_solution_running = true]
    H1 --> H2[is_search_visualizing = false]
    H2 --> H3[Reset current state =\ninitial state and find new solution]
    H3 --> SR

    %% --- Branch 4 : visualise search ---
    H -- No --> I{User choose to visualise\nsearch process?}
    I -- Yes --> I1[is_search_visualizing = true]
    I1 --> I2[is_solution_running = false]
    I2 --> I3[Reset current state =\ninitial state and load search process]
    I3 --> SR

    %% If none of the four “Yes” branches fire, fall through to status checks
    I -- No --> SR

    %% ---------- Status-driven execution ----------
    SR{is_solution_running == true}

    %% -- Solution playback --
    SR -- Yes --> SC{Is the solution complete?}
    SC -- No --> S1[Update current state =\nnext state from solution] --> R
    SC -- Yes --> R

    %% -- Search-process playback --
    SR -- No --> SV{is_search_visualizing == true}
    SV -- Yes --> SPC{Is the search process complete?}
    SPC -- No --> S2[Update current state =\nnext state from search process] --> R
    SPC -- Yes --> R
    SV -- No --> R

    %% ---------- Rendering & loop-back ----------
    R[Render current state and GUI elements]
    R --> D %% loop back to “Is program running?”