/// <summary>Renders the equipment starting from the specified slot.</summary>
private void RenderEquipment(
SpaceItemSlot slot,
Vector2 offset,
int depth = 1,
float order = 0.5f,
ItemSlotSize parentSize = ItemSlotSize.Small,
bool?mirrored = null)
{
// Nothing to do if there's no item in the slot.
if (slot.Item <= 0)
{
return;
}
// Get item info.
var item = (SpaceItem)Manager.GetComponent(slot.Item, Item.TypeId);
// Adjust depth we want to render at.
order -= (item.DrawBelowParent ? -0.25f : 0.25f) / depth;
// See if we should mirror rendering (e.g. left wing).
var slotOffset = slot.Offset;
var itemOffset = item.ModelOffset;
if (mirrored.HasValue)
{
if (mirrored.Value)
{
slotOffset.Y = -slotOffset.Y;
}
}
// ReSharper disable CompareOfFloatsByEqualityOperator Intentional.
else if (slotOffset.Y != 0.0f)
// ReSharper restore CompareOfFloatsByEqualityOperator
{
mirrored = slot.Offset.Y < 0;
}
if (mirrored.HasValue && mirrored.Value)
{
itemOffset.Y = -itemOffset.Y;
}
// Move the offset according to rotation and accumulate it.
var localOffset = offset + parentSize.Scale() * slotOffset;
var renderOffset = localOffset + item.RequiredSlotSize.Scale() * itemOffset;
// Render this particular item.
foreach (SimpleTextureDrawable drawable in Manager.GetComponents(item.Entity, SimpleTextureDrawable.TypeId))
{
drawable.Draw(
_spriteBatch,
renderOffset,
0f,
item.RequiredSlotSize.Scale() / drawable.Scale,
mirrored.HasValue && mirrored.Value ? SpriteEffects.FlipVertically : SpriteEffects.None,
order);
}
// Render sub-items.
foreach (SpaceItemSlot childSlot in Manager.GetComponents(item.Entity, ItemSlot.TypeId))
{
RenderEquipment(childSlot, localOffset, depth + 1, order, item.RequiredSlotSize, mirrored);
}
}
/// <summary>
/// Computes the size of the model, i.e. the area covered by the fully rendered equipment starting with the
/// specified slot.
/// </summary>
private RectangleF ComputeModelSize(
SpaceItemSlot slot, Vector2 offset, ItemSlotSize parentSize = ItemSlotSize.Small, bool?mirrored = null)
{
// Nothing to do if there's no item in the slot.
if (slot.Item <= 0)
{
return(RectangleF.Empty);
}
// Get item info.
var item = (SpaceItem)Manager.GetComponent(slot.Item, Item.TypeId);
// Get required bounds to render this item.
var bounds = Manager.GetComponents(item.Entity, SimpleTextureDrawable.TypeId)
.Cast <SimpleTextureDrawable>()
.Aggregate(
RectangleF.Empty,
(current, drawable) =>
{
var b = (RectangleF)drawable.Texture.Bounds;
b.Offset(-b.Width / 2f, -b.Height / 2f);
return(RectangleF.Union(current, b));
});
// See if we should mirror rendering (e.g. left wing).
var slotOffset = slot.Offset;
var itemOffset = item.ModelOffset;
if (mirrored.HasValue)
{
if (mirrored.Value)
{
slotOffset.Y = -slotOffset.Y;
}
}
// ReSharper disable CompareOfFloatsByEqualityOperator Intentional.
else if (slotOffset.Y != 0.0f)
// ReSharper restore CompareOfFloatsByEqualityOperator
{
mirrored = slot.Offset.Y < 0;
}
if (mirrored.HasValue && mirrored.Value)
{
itemOffset.Y = -itemOffset.Y;
}
// Move the offset according to rotation and accumulate it.
var localOffset = offset + parentSize.Scale() * slotOffset;
var renderOffset = localOffset + item.RequiredSlotSize.Scale() * itemOffset;
// Adjust to actual area the texture is rendered to.
bounds.Offset(renderOffset);
bounds.Inflate(
-bounds.Width / 2f * (1 - item.RequiredSlotSize.Scale()),
-bounds.Height / 2f * (1 - item.RequiredSlotSize.Scale()));
// Check sub-items.
return(Manager.GetComponents(item.Entity, ItemSlot.TypeId)
.Cast <SpaceItemSlot>()
.Aggregate(bounds, (current, childSlot) => RectangleF.Union(current, ComputeModelSize(childSlot, localOffset, item.RequiredSlotSize, mirrored))));
}
