public void UpdateEvents(List <SDL2.SDL.SDL_Event> events)
{
OldMousePosition = new Vec2(CurrentMousePosition);
OldWheelPosition = new Vec2(CurrentWheelPosition);
OldState = new Dictionary <uint, bool>(NewState);
foreach (var e in events)
{
if (e.type == SDL2.SDL.SDL_EventType.SDL_MOUSEWHEEL)
{
CurrentWheelPosition += new Vec2(e.wheel.x, e.wheel.y);
}
else if (e.type == SDL2.SDL.SDL_EventType.SDL_MOUSEMOTION)
{
CurrentMousePosition = new Vec2(e.motion.x, e.motion.y);
}
bool?state = null;
if (e.type == SDL2.SDL.SDL_EventType.SDL_MOUSEBUTTONDOWN && e.key.repeat == 0)
{
state = true;
}
else if (e.type == SDL2.SDL.SDL_EventType.SDL_MOUSEBUTTONUP)
{
state = false;
}
if (state.HasValue)
{
if (!NewState.ContainsKey(e.button.button))
{
NewState.Add(e.button.button, state.Value);
}
else
{
NewState[e.button.button] = state.Value;
}
}
}
}
public void Add(OperationInvoker doChange, OperationInvoker undoChange)
{
OldState.Add(undoChange);
NewState.Add(doChange);
}