/// <summary>Creates an enumerable from a <c>BigIntger</c> which holds type bits.</summary>
/// <param name="bits">The BigInteger which holds the type bits.</param>
/// <returns>An Enumerable of each type the bits has.</returns>
internal static IEnumerable <Type> GetTypesFromBits(BigInteger bits)
{
foreach (KeyValuePair <Type, ComponentType> keyValuePair in ComponentTypes)
{
if ((keyValuePair.Value.Bit & bits) != 0)
{
yield return(keyValuePair.Key);
}
}
}
/// <summary>Gets the one.</summary>
/// <param name="types">The types.</param>
/// <returns>The specified Aspect.</returns>
public Aspect GetOne(params Type[] types)
{
Debug.Assert(types != null, "Types must not be null.");
foreach (ComponentType componentType in types.Select(ComponentTypeManager.GetTypeFor))
{
this.OneTypesMap |= componentType.Bit;
}
return(this);
}
/// <summary>Appends the types.</summary>
/// <param name="builder">The builder.</param>
/// <param name="headerMessage">The header message.</param>
/// <param name="typeBits">The type bits.</param>
private static void AppendTypes(StringBuilder builder, string headerMessage, BigInteger typeBits)
{
if (typeBits != 0)
{
builder.AppendLine(headerMessage);
foreach (Type type in ComponentTypeManager.GetTypesFromBits(typeBits))
{
builder.Append(", ");
builder.AppendLine(type.Name);
}
}
}
/// <summary>Initializes a new instance of the <see cref="ComponentType"/> class.</summary>
internal ComponentType()
{
#if XBOX || WINDOWS_PHONE || PORTABLE || FORCEINT32
if (nextId == 32)
{
// nextBit has overflown and is 0 now
throw new InvalidOperationException("Distinct ComponentType limit reached: number of ComponentType types is restricted to 32 in the current Artemis build.");
}
#endif
this.Id = nextId;
this.Bit = nextBit;
nextId++;
nextBit <<= 1;
}
/// <summary>Gets the bit-register for the specified entity system.</summary>
/// <param name="entitySystem">The entity system.</param>
/// <returns>The bit flag register for the specified system.</returns>
public BigInteger GetBitFor(EntitySystem entitySystem)
{
BigInteger bit;
if (this.systemBits.TryGetValue(entitySystem, out bit) == false)
{
#if WINDOWS_PHONE || XBOX || PORTABLE || FORCEINT32
if (this.position == 32)
{
// bit is going to overflow and become 1 again
throw new InvalidOperationException("EntitySystem instances limit reached: number of EntitySystem instances is restricted to 32 in the current Artemis build.");
}
bit = 1 << this.position;
#else
bit = new BigInteger(1) << this.position;
#endif
this.position++;
this.systemBits.Add(entitySystem, bit);
}
return bit;
}
/// <summary>Gets the bit-register for the specified entity system.</summary>
/// <param name="entitySystem">The entity system.</param>
/// <returns>The bit flag register for the specified system.</returns>
public BigInteger GetBitFor(EntitySystem entitySystem)
{
BigInteger bit;
if (this.systemBits.TryGetValue(entitySystem, out bit) == false)
{
#if WINDOWS_PHONE || XBOX || PORTABLE || FORCEINT32
if (this.position == 32)
{
// bit is going to overflow and become 1 again
throw new InvalidOperationException("EntitySystem instances limit reached: number of EntitySystem instances is restricted to 32 in the current Artemis build.");
}
bit = 1 << this.position;
#else
bit = new BigInteger(1) << this.position;
#endif
this.position++;
this.systemBits.Add(entitySystem, bit);
}
return(bit);
}
/// <summary>Appends the types.</summary>
/// <param name="builder">The builder.</param>
/// <param name="headerMessage">The header message.</param>
/// <param name="typeBits">The type bits.</param>
private static void AppendTypes(StringBuilder builder, string headerMessage, BigInteger typeBits)
{
if (typeBits != 0)
{
builder.AppendLine(headerMessage);
foreach (Type type in ComponentTypeManager.GetTypesFromBits(typeBits))
{
builder.Append(", ");
builder.AppendLine(type.Name);
}
}
}
/// <summary>Gets the one.</summary>
/// <param name="types">The types.</param>
/// <returns>The specified Aspect.</returns>
public Aspect GetOne(params Type[] types)
{
Debug.Assert(types != null, "Types must not be null.");
foreach (ComponentType componentType in types.Select(ComponentTypeManager.GetTypeFor))
{
this.OneTypesMap |= componentType.Bit;
}
return this;
}
/// <summary>Initializes a new instance of the <see cref="ComponentType"/> class.</summary>
internal ComponentType()
{
#if XBOX || WINDOWS_PHONE || PORTABLE || FORCEINT32
if (nextId == 32)
{
// nextBit has overflown and is 0 now
throw new InvalidOperationException("Distinct ComponentType limit reached: number of ComponentType types is restricted to 32 in the current Artemis build.");
}
#endif
this.Id = nextId;
this.Bit = nextBit;
nextId++;
nextBit <<= 1;
}
/// <summary>Initializes static members of the <see cref="ComponentType"/> class.</summary>
static ComponentType()
{
nextBit = 1;
nextId = 0;
}
/// <summary>Initializes static members of the <see cref="ComponentType"/> class.</summary>
static ComponentType()
{
nextBit = 1;
nextId = 0;
}
/// <summary>Gets the one.</summary>
/// <param name="types">The types.</param>
/// <returns>The specified Aspect.</returns>
public Aspect GetOne(params Type[] types)
{
Debug.Assert(types != null, "Types must not be null.");
for(int i = 0; i < types.Length; ++i)
{
ComponentType componentType = ComponentTypeManager.GetTypeFor(types[i]);
this.OneTypesMap |= componentType.Bit;
}
return this;
}