Bubel/bubel-ecs
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Move ECS to Bubel module

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This commit is contained in:
Mergul 2020-05-05 16:56:51 +02:00
parent a7a63f6a20
commit 5411e97cb1
46 changed files with 163 additions and 154 deletions
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39
source/ecs/traits.d
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@ -1,39 +0,0 @@
module ecs.traits;
import std.traits;
bool isForeachDelegateWithTypes(DG, Types...)()
{
return is(DG == delegate) && is(ReturnType!DG == int) && is(Parameters!DG == Types);
}
unittest
{
assert(isForeachDelegateWithTypes!(int delegate(int, int), int, int));
assert(isForeachDelegateWithTypes!(int delegate(ref int, ref int), int, int));
assert(!isForeachDelegateWithTypes!(int delegate(double), int, int));
}
/************************************************************************************************************************
Returns index of Component/Entity array in System's EntitiesData struct
*/
static long getIndexOfTypeInEntitiesData(EntitiesData, Type)()
{
alias EntitiesDataFields = Fields!(EntitiesData);
long index = -1;
foreach (fieldNum, FieldType; Fields!(EntitiesData))
{
static if (!isBasicType!(FieldType)) // Not basic type
{
// FieldType should be something like: 'const(SomeComponent)[]'
enum bool entitiesMatches = is(Type == Unqual!(ForeachType!(FieldType)));
static if (entitiesMatches)
{
index = fieldNum;
break;
}
}
}
return index;
}