mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2025-02-08 17:46:24 -05:00
894c60f77a
* Fixed NaN on normalize 0 vector. * Tentative implementation in getStepLength. * mapEntity.TileX/Y removed. * Fixed Position and Target not being initialised in createMapEntity. * mapEntity.Position is no longer embedded. * mapEntity.LocationX/Y no longer used outside map_entity.go. * mapEntity.subCellX/Y removed. * mapEntity.LocationX/Y removed. * mapEntity.OffsetX/Y and TargetX/Y removed. * Direction method added to Vector, returns 0-64 direction. * Moved Vector.Direction() to Position.DirectionTo and refactored. * Renamed RenderOffset from SubCell and tested IsZero. * d2math.WrapInt added for use with directions. * Tidied up position and tests. * Refactored d2common.AdjustWithRemainder into d2mapEntity. * Tidying up d2mapEntity. * Final cleanup. * Lint warnings. * Spelling correction.
168 lines
2.8 KiB
Go
168 lines
2.8 KiB
Go
package d2math
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import (
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"testing"
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)
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func TestEqualsApprox(t *testing.T) {
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subEpsilon := Epsilon / 3
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a, b := 1+subEpsilon, 1.0
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got := EqualsApprox(a, b)
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if !got {
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t.Errorf("compare %.2f and %.2f: wanted %t: got %t", a, b, true, got)
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}
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a, b = 1+Epsilon, 1.0
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got = EqualsApprox(a, b)
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if !got {
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t.Errorf("compare %.2f and %.2f: wanted %t: got %t", a, b, false, got)
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}
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}
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func TestCompareFloat64Fuzzy(t *testing.T) {
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subEpsilon := Epsilon / 3
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want := 0
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a, b := 1+subEpsilon, 1.0
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got := CompareFloat64Fuzzy(a, b)
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if got != want {
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t.Errorf("compare %.2f and %.2f: wanted %d: got %d", a, b, want, got)
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}
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want = 1
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a, b = 2, 1.0
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got = CompareFloat64Fuzzy(a, b)
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if got != want {
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t.Errorf("compare %.2f and %.2f: wanted %d: got %d", a, b, want, got)
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}
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want = -1
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a, b = -2, 1.0
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got = CompareFloat64Fuzzy(a, b)
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if got != want {
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t.Errorf("compare %.2f and %.2f: wanted %d: got %d", a, b, want, got)
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}
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}
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func TestClampFloat64(t *testing.T) {
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want := 0.5
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a := 0.5
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got := ClampFloat64(a, 0, 1)
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if got != want {
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t.Errorf("clamped %.2f between 0 and 1: wanted %.2f: got %.2f", a, want, got)
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}
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want = 0.0
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a = -1.0
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got = ClampFloat64(a, 0, 1)
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if got != want {
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t.Errorf("clamped %.2f between 0 and 1: wanted %.2f: got %.2f", a, want, got)
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}
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want = 1.0
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a = 2.0
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got = ClampFloat64(a, 0, 1)
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if got != want {
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t.Errorf("clamped %.2f between 0 and 1: wanted %.2f: got %.2f", a, want, got)
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}
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}
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func TestSign(t *testing.T) {
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want := 1
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a := 0.5
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got := Sign(a)
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if got != want {
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t.Errorf("sign of %.2f: wanted %df: got %d", a, want, got)
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}
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want = -1
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a = -3
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got = Sign(a)
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if got != want {
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t.Errorf("sign of %.2f: wanted %df: got %d", a, want, got)
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}
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want = 0
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a = 0.0
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got = Sign(a)
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if got != want {
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t.Errorf("sign of %.2f: wanted %df: got %d", a, want, got)
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}
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}
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func TestLerp(t *testing.T) {
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want := 3.0
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x := 0.3
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a, b := 0.0, 10.0
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got := Lerp(a, b, x)
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d := "linear interpolation between %.2f and %.2f with interpolator %.2f: wanted %.2f: got %.2f"
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if got != want {
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t.Errorf(d, a, b, x, want, got)
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}
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}
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func TestUnlerp(t *testing.T) {
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want := 0.3
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x := 3.0
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a, b := 0.0, 10.0
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got := Unlerp(a, b, x)
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d := "find the interpolator of %.2f between %.2f and %.2f: wanted %.2f: got %.2f"
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if got != want {
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t.Errorf(d, x, a, b, want, got)
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}
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}
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func TestWrapInt(t *testing.T) {
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want := 50
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a, b := 1050, 100
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got := WrapInt(a, b)
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d := "wrap %d between 0 and %d: want %d: got %d"
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if got != want {
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t.Errorf(d, a, b, want, got)
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}
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want = 270
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a, b = -1170, 360
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got = WrapInt(a, b)
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if got != want {
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t.Errorf(d, a, b, want, got)
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}
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want = 270
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a, b = 270, 360
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got = WrapInt(a, b)
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if got != want {
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t.Errorf(d, a, b, want, got)
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}
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want = 90
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a, b = -270, 360
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got = WrapInt(a, b)
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if got != want {
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t.Errorf(d, a, b, want, got)
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}
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}
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