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added b2Array tests #9

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Merged
merged 1 commit into from
Apr 20, 2025
Merged

added b2Array tests #9

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38 changes: 28 additions & 10 deletions src/Box2D.NET/B2Arrays.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,9 @@
// SPDX-FileCopyrightText: 2025 Ikpil Choi(ikpil@naver.com)
// SPDX-License-Identifier: MIT

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using static Box2D.NET.B2Constants;
using static Box2D.NET.B2Cores;

Expand Down Expand Up @@ -35,7 +37,11 @@ public static class B2Arrays
/* Get */
public static ref T b2Array_Get<T>(ref B2Array<T> a, int index)
{
Debug.Assert(0 <= index && index < a.count);
if (0 > index || index >= a.count)
{
throw new IndexOutOfRangeException($"Index is out of range - count({a.count}) index({index})");
}

return ref a.data[index];
}

Expand Down Expand Up @@ -68,20 +74,24 @@ public static ref T b2Array_Get<T>(ref B2Array<T> a, int index)
/* Set */
public static void b2Array_Set<T>(ref B2Array<T> a, int index, T value)
{
Debug.Assert(0 <= index && index < a.count);
a.data[index] = value;
ref T v = ref b2Array_Get(ref a, index);
v = value;
}

/* RemoveSwap */
public static int b2Array_RemoveSwap<T>(ref B2Array<T> a, int index) where T : new()
{
Debug.Assert(0 <= index && index < a.count);
if (0 > index || index >= a.count)
{
throw new IndexOutOfRangeException($"Index is out of range - count({a.count}) index({index})");
}

int movedIndex = B2_NULL_INDEX;
if (index != a.count - 1)
{
movedIndex = a.count - 1;
a.data[index] = a.data[movedIndex];

// fixed, ikpil
if (!typeof(T).IsValueType)
{
Expand All @@ -96,14 +106,19 @@ public static void b2Array_Set<T>(ref B2Array<T> a, int index, T value)
/* Pop */
public static T b2Array_Pop<T>(ref B2Array<T> a) where T : new()
{
Debug.Assert(a.count > 0);
if (0 >= a.count)
{
throw new IndexOutOfRangeException($"Index is out of range - count({a.count})");
}

T value = a.data[a.count - 1];

// fixed, ikpil
if (!typeof(T).IsValueType)
{
a.data[a.count - 1] = new T();
}

a.count -= 1;
return value;
}
Expand All @@ -117,8 +132,11 @@ public static void b2Array_Clear<T>(ref B2Array<T> a)
/* ByteCount */
public static int b2Array_ByteCount<T>(ref B2Array<T> a)
{
// TODO: @ikpil, check
//return (int)( a.capacity * sizeof( T ) );
if (typeof(T).IsValueType)
{
return a.capacity * Marshal.SizeOf<T>();
}

return -1;
}

Expand Down Expand Up @@ -165,4 +183,4 @@ public static void b2Array_Destroy<T>(ref B2Array<T> a)
a.capacity = 0;
}
}
}
}
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