func CMWCRandSpec(c gospec.Context) {
c.Specify("CMWC32 conforms properly to math/rand.Rand interface.", func() {
c1 := cmwc.MakeCmwc(3278470471, 4)
c2 := cmwc.MakeCmwc(3278470471, 4)
c1.Seed(1234)
c2.Seed(4321)
// Make sure that we don't generate numbers with the most significant
// bit set
for i := 0; i < 1000000; i++ {
v1 := c1.Int63()
c.Expect(v1 >= 0, Equals, true)
if v1 < 0 {
break
}
c2.Int63()
}
// Make sure that two generators with the same parameters, but in
// different states, are in the exact same state when seeded with
// the same seed.
c1.Seed(0xabcdef12)
c2.Seed(0xabcdef12)
for i := 0; i < 10000; i++ {
v1 := c1.Int63()
v2 := c2.Int63()
c.Expect(v1, Equals, v2)
if v1 != v2 {
break
}
}
})
}
func BenchmarkCMWC32AsRandSource(b *testing.B) {
b.StopTimer()
c := cmwc.MakeCmwc(3278470471, 4)
r := rand.New(c)
b.StartTimer()
for i := 0; i < b.N; i++ {
r.Int63()
}
}
func CMWCGobSpec(c gospec.Context) {
c.Specify("CMWC32 gobs and ungobs properly.", func() {
// Set up c1 and c2 and run them for a while, then we'll c2 and make
// sure it runs the same when it is ungobbed.
c1 := cmwc.MakeCmwc(3278470471, 4)
c2 := cmwc.MakeCmwc(3278470471, 4)
c1.Seed(0x12345678)
c2.Seed(0x12345678)
for i := 0; i < 100000; i++ {
c1.Int63()
c2.Int63()
}
buf := bytes.NewBuffer(nil)
enc := gob.NewEncoder(buf)
err := enc.Encode(c2)
c.Expect(err, Equals, error(nil))
if err != nil {
return
}
dec := gob.NewDecoder(bytes.NewBuffer(buf.Bytes()))
// c2 is going to be constructed from the gobbed data only
var c3 cmwc.Cmwc
err = dec.Decode(&c3)
c.Expect(err, Equals, error(nil))
if err != nil {
return
}
for i := 0; i < 100000; i++ {
// Checking c2 against c2 for many iterations.
v1 := c1.Int63()
v2 := c3.Int63()
c.Expect(v1, Equals, v2)
if v1 != v2 {
return
}
}
})
}
func makeGame(h *house.HouseDef) *Game {
var g Game
g.Side = SideExplorers
g.House = h
g.House.Normalize()
g.viewer = house.MakeHouseViewer(g.House, 62)
g.Rand = cmwc.MakeCmwc(4285415527, 3)
g.Rand.SeedWithDevRand()
// This way an unset id will be invalid
g.Entity_id = 1
g.Turn = 1
g.Side = SideHaunt
g.setup()
return &g
}
