53 lines
1.5 KiB
C#
53 lines
1.5 KiB
C#
using GameCli;
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using Xunit;
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namespace GameCli.Tests;
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public class ObservationTests
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{
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[Fact]
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public void Build_HasSevenDimensions()
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{
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var ship = new ShipState(0.5f, 0.5f, 0f, 0f, 0f, 0f);
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var obs = Observation.Build(ship, target: (0.5f, 0.5f));
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Assert.Equal(7, obs.Length);
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}
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[Fact]
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public void Build_DisplacementIsTargetMinusShip()
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{
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var ship = new ShipState(0.3f, 0.4f, 0f, 0f, 0f, 0f);
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var obs = Observation.Build(ship, target: (0.7f, 0.9f));
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// dx, dy at indices 0, 1
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Assert.Equal(0.4f, obs[0], precision: 5);
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Assert.Equal(0.5f, obs[1], precision: 5);
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}
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[Fact]
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public void Build_EncodesVelocity()
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{
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var ship = new ShipState(0.5f, 0.5f, 0.1f, -0.2f, 0f, 0f);
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var obs = Observation.Build(ship, target: (0.5f, 0.5f));
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Assert.Equal(0.1f, obs[2], precision: 5);
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Assert.Equal(-0.2f, obs[3], precision: 5);
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}
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[Fact]
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public void Build_EncodesAngleAsSinCos()
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{
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var ship = new ShipState(0.5f, 0.5f, 0f, 0f, MathF.PI / 2f, 0f);
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var obs = Observation.Build(ship, target: (0.5f, 0.5f));
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// sin(π/2)=1, cos(π/2)=0
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Assert.Equal(1f, obs[4], precision: 5);
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Assert.Equal(0f, obs[5], precision: 5);
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}
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[Fact]
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public void Build_LastDimIsAngularVelocity()
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{
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var ship = new ShipState(0.5f, 0.5f, 0f, 0f, 0f, 0.7f);
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var obs = Observation.Build(ship, target: (0.5f, 0.5f));
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Assert.Equal(0.7f, obs[6], precision: 5);
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}
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}
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