mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-06-12 10:40:42 +00:00
82 lines
1.5 KiB
Go
82 lines
1.5 KiB
Go
package d2mapentity
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import (
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"os"
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"testing"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math/d2vector"
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)
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const (
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normalTickTime float64 = 0.05
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)
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func TestMain(m *testing.M) {
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os.Exit(m.Run())
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}
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func entity() mapEntity {
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return newMapEntity(10, 10)
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}
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func movingEntity() mapEntity {
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e := entity()
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e.SetSpeed(9)
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newPath := path(10, e.Position)
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e.SetPath(newPath, func() {})
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return e
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}
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func path(length int, origin d2vector.Position) []d2vector.Position {
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path := make([]d2vector.Position, length)
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for i := 0; i < length; i++ {
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origin.AddScalar(float64(i+1) / 5)
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tile := origin.World()
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path[i] = pathTile(tile.X(), tile.Y())
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}
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return path
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}
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func pathTile(x, y float64) d2vector.Position {
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return d2vector.NewPositionTile(x, y)
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}
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func TestMapEntity_Step(t *testing.T) {
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stepCount := 10
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e := movingEntity()
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start := e.Position.Clone()
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for i := 0; i < stepCount; i++ {
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e.Step(normalTickTime)
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}
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// velocity
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change := d2vector.NewVector(0, 0)
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change.Copy(&e.Target.Vector)
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change.Subtract(&e.Position.Vector)
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change.SetLength(e.Speed * normalTickTime)
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// change in position
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change.Scale(float64(stepCount))
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want := change.Add(start)
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if !e.Position.EqualsApprox(want) {
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t.Errorf("entity position after %d steps: want %s: got %s", stepCount, want, e.Position.Vector)
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}
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if e.Position.Equals(start) {
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t.Errorf("entity did not move, still at position %s", start)
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}
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}
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func BenchmarkMapEntity_Step(b *testing.B) {
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stepEntity := movingEntity()
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for n := 0; n < b.N; n++ {
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stepEntity.Step(normalTickTime)
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}
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}
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