public void HoldTranslation(MouseState mouse, ref GameEntityGroup selectedGroup)
{
#region Composite Pattern
selectedGroup.Translate(new Vector2(mouse.X - this.gwStateMachine.translateOffset.X, mouse.Y - this.gwStateMachine.translateOffset.Y));
#endregion
this.gwStateMachine.translateOffset.X = mouse.X;
this.gwStateMachine.translateOffset.Y = mouse.Y;
}
private void UpdateInput()
{
KeyboardState state = Keyboard.GetState();
MouseState mouse = Mouse.GetState();
// if S is pressed
if (state.IsKeyDown(Keys.S) & !previousState.IsKeyDown(Keys.S))
{
// All the game entities get their old behaviour back
foreach (GameEntity ge in game_elements)
{
ge.moveBehaviour = ge.oldBehaviour;
}
#region Composite Pattern
// The group is deleted & recreated
selectedGroup = null;
selectedGroup = new GameEntityGroup(graphics);
#endregion
}
// Left mouse button pressed.
if ((mouse.LeftButton == ButtonState.Pressed) & (previousmouseState.LeftButton != ButtonState.Pressed))
{
#region Composite Pattern
if (selectedGroup.ClickInArea(new Vector2(mouse.X, mouse.Y)))
{
#endregion
translateMode = true;
translateOffset.X = mouse.X;
translateOffset.Y = mouse.Y;
}
else
{
selectRectangle.X = mouse.X;
selectRectangle.Y = mouse.Y;
selectMode = true;
}
}
// while left mouse button pressed. Update the Width & Height of the selectRectangle
if ((mouse.LeftButton == ButtonState.Pressed))
{
if (translateMode)
{
#region Composite Pattern
selectedGroup.Translate(new Vector2(mouse.X - translateOffset.X, mouse.Y - translateOffset.Y));
#endregion
translateOffset.X = mouse.X;
translateOffset.Y = mouse.Y;
}
if (selectMode)
{
selectRectangle.Width = mouse.X - selectRectangle.X;
selectRectangle.Height = mouse.Y - selectRectangle.Y;
}
}
// Left mouse button released. End of select mode
if ((mouse.LeftButton == ButtonState.Released) & (previousmouseState.LeftButton != ButtonState.Released))
{
if (translateMode)
{
translateMode = false;
}
else if (selectMode)
{
selectMode = false;
#region Composite Pattern
// A new entity group is created.
GameEntityGroup newGroup = new GameEntityGroup(graphics);
#endregion
// All the game entities that are part of the selected area
foreach (GameEntity ge in game_elements)
{
if ((ge.position.X >= selectRectangle.X) &&
(ge.position.X <= (selectRectangle.X + selectRectangle.Width)) &&
(ge.position.Y >= selectRectangle.Y) &&
(ge.position.Y <= (selectRectangle.Y + selectRectangle.Height)))
{
ge.moveBehaviour = new NoWalk();
#region Composite Pattern
// Adding the game entity to a new group. All the game entities in the selection have NoWalk behaviour
newGroup.Add(ge);
#endregion
}
if ((ge.position.X <= selectRectangle.X) &&
(ge.position.X >= (selectRectangle.X + selectRectangle.Width)) &&
(ge.position.Y <= selectRectangle.Y) &&
(ge.position.Y >= (selectRectangle.Y + selectRectangle.Height)))
{
ge.moveBehaviour = new NoWalk();
#region Composite Pattern
// Adding the game entity to a new group. All the game entities in the selection have NoWalk behaviour
newGroup.Add(ge);
#endregion
}
}
// Adding the complete group to the composite structure
newGroup.Left = selectRectangle.X;
newGroup.Top = selectRectangle.Y;
newGroup.Right = selectRectangle.X + selectRectangle.Width;
newGroup.Bottom = selectRectangle.Y + selectRectangle.Height;
// If the selection was from right to left
if (newGroup.Left >= newGroup.Right)
{
int temp = newGroup.Right;
newGroup.Right = newGroup.Left;
newGroup.Left = temp;
}
// If the selection was from bottom to top
if (newGroup.Top >= newGroup.Bottom)
{
int temp = newGroup.Bottom;
newGroup.Bottom = newGroup.Top;
newGroup.Top = temp;
}
#region Composite Pattern
selectedGroup.Add(newGroup);
#endregion
selectRectangle.Width = 0;
selectRectangle.Height = 0;
}
}
// set the old states of the keyboard & mouse
previousState = state;
previousmouseState = mouse;
}