State :: struct {
    id: Mode;
    camera: Camera2D;
}


state_init :: (current_mode: Mode, st: ..State) {
    for st array_add(*states, it);
    current = state_find(current_mode);
}

state_switch :: (state_id: Mode) {
    idx       := state_find(state_id);
    new_state := *states[idx];
    old_state := *states[current];

    old_state.camera = camera;
    camera = new_state.camera;

    current = idx;
}


#scope_file


states: [..]State;
current: int;


state_find :: (id: Mode) -> idx: int {
    ok, idx := array_find(states, { id, {} }, find_by_id);
    assert(ok, "Should not happen @ state_find");
    return idx;
}

find_by_id :: (a: State, b: State) -> bool {
    return a.id == b.id;
}