Luis Gonzalez
88 lines
3.1 KiB
C#
88 lines
3.1 KiB
C#
using NUnit.Framework;
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using ProjectM.Simulation;
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using Unity.Mathematics;
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namespace ProjectM.Tests
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{
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/// <summary>
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/// Pure-function tests for <see cref="PlayerSpawnMath.SpawnOffset"/> (no ECS world), mirroring
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/// StatMathTests. Pins the M4 co-op deterministic spawn spread: stable, distinct per-NetworkId ring
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/// positions so players never stack on connect.
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/// </summary>
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public class PlayerSpawnRingTests
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{
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const float R = 2.5f;
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const int Slots = 4;
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const float Eps = 1e-4f;
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[Test]
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public void Deterministic_SameInputs_SameOffset()
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{
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var a = PlayerSpawnMath.SpawnOffset(2, R, Slots);
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var b = PlayerSpawnMath.SpawnOffset(2, R, Slots);
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Assert.AreEqual(a.x, b.x, Eps);
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Assert.AreEqual(a.y, b.y, Eps);
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Assert.AreEqual(a.z, b.z, Eps);
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}
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[Test]
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public void FirstFour_Land_On_Cardinal_Ring_Slots()
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{
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// NetworkIds start at 1; slots=4 -> 0, 90, 180, 270 degrees on a ring of radius R.
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AssertXz(PlayerSpawnMath.SpawnOffset(1, R, Slots), R, 0f);
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AssertXz(PlayerSpawnMath.SpawnOffset(2, R, Slots), 0f, R);
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AssertXz(PlayerSpawnMath.SpawnOffset(3, R, Slots), -R, 0f);
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AssertXz(PlayerSpawnMath.SpawnOffset(4, R, Slots), 0f, -R);
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}
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[Test]
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public void Distinct_NetworkIds_Give_Distinct_Positions()
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{
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var seen = new System.Collections.Generic.List<float3>();
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for (int id = 1; id <= 8; id++)
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{
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var p = PlayerSpawnMath.SpawnOffset(id, R, Slots);
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foreach (var q in seen)
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Assert.Greater(math.distance(p, q), 1e-3f, $"id {id} collides with an earlier slot");
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seen.Add(p);
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}
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}
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[Test]
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public void FifthPlayer_Spills_To_Outer_Ring()
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{
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// idx 4 with slots 4 -> ring 1, slot 0 -> radius doubled, angle 0.
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AssertXz(PlayerSpawnMath.SpawnOffset(5, R, Slots), 2f * R, 0f);
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}
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[Test]
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public void NonPositiveRadius_Returns_Zero()
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{
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Assert.AreEqual(0f, math.length(PlayerSpawnMath.SpawnOffset(3, 0f, Slots)), Eps);
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Assert.AreEqual(0f, math.length(PlayerSpawnMath.SpawnOffset(3, -1f, Slots)), Eps);
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}
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[Test]
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public void DegenerateSlots_DoNotThrow_AndStayDistinct()
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{
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// slots < 1 is clamped to 1 (every player on its own concentric ring).
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var a = PlayerSpawnMath.SpawnOffset(1, R, 0);
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var b = PlayerSpawnMath.SpawnOffset(2, R, 0);
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Assert.Greater(math.distance(a, b), 1e-3f);
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}
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[Test]
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public void Offset_Is_Planar_NoVerticalComponent()
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{
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for (int id = 1; id <= 6; id++)
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Assert.AreEqual(0f, PlayerSpawnMath.SpawnOffset(id, R, Slots).y, Eps);
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}
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static void AssertXz(float3 p, float x, float z)
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{
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Assert.AreEqual(x, p.x, Eps);
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Assert.AreEqual(z, p.z, Eps);
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}
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}
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}
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