UnityでC#を勉強しはじめた私の主張

2015/09/26(土) comm tech festivalでの
「UnityでC#を勉強しはじめた私の主張」

の資料です。
C#erな方、.NETマスターな方、ご意見、ご感想、つっこみをぜひぜひよろしくお願いします。

[Comm Tech Festival](https://comuplus.doorkeeper.jp/events/30403)

1. ɹ UnityͰC#Λֶͼ࢝Ίͨࢲͷओு ɹ @RyotaMurohoshi 2015/09/26(౔)*Comm*Tech*Fes4val
2. ͸͡Ί·ͯ͠ɺ͜Μʹͪ͸ UnityηογϣϯΛ୲౰͍͖ͤͯͨͩ͞·͢ @RyotaMurohoshi-ͱਃ͠·͢
3. ͝ΊΜͳ͍͞
4. Unityʹ͓͚ΔC#ͱ͔.NETͷ ʰͳΜ͔͢Μ͛͐͜ͱʱ͸࿩͠·ͤΜ (࿩ͤ·ͤΜɻ͝ΊΜͳ͍͞)
5. ͓લͩΕΑ • twi%er(:(@RyotaMurohoshi • ౤ߘઌ(:(h%p:/ /qiita.com/RyotaMurohoshi • ॴଐ(:(Fuller,(Inc. • ίϛϡχςΟ(:(Unity෦ • ͦͷଞ(:(UniLinqͬͯͷ࡞Γ·ͨ͠(͍Βͳ͍ࢠʹͳΓ·ͨ͠)
6. ʮUnityͰC#Λֶͼ࢝ΊͨࢲͷओுʯͷλΠτϧ௨Γɺ ήʔϜΤϯδϯUnityͱͷग़ձ͍ɺC#Λ৮Γ࢝Ί·ͨ͠ ࠓ͸ۀ຿Ͱ΋UnityͰήʔϜΛ࡞͍ͬͯ·͢
7. ࠓ೔ͷ͜ͷηογϣϯͷํ޲ੑͱ໨తΛ ͪΐͬͱ͓࿩ͤͯ͞Լ͍͞
8. Ҏલ͜Μͳ͜ͱ͕͋Γ·ͨ͠
9. ͋ΔUnityͷษڧձͷඈͼೖΓLTʹͯ ͓Ε:ʮLINQ஌͍ͬͯΔํʙ(Έͳ͞Μͬͯ͠ΔΑͶʔ)ʯ ձ৔:ʮ͠ʔΜɻɻɻʯ ͓Ε:(େମҰׂ͘Β͍ͩͱɻɻɻ) ͓Ε:(LINQΛ࢖Θͳ͍ͱ͸΋͍ͬͨͳ͍ʂʂʂ) ※ͨͩ͠ɺϓϩάϥϚͷΈ͕ର৅ͷษڧձͰ͸ͳ͍Ͱ͢ ※౰࣌͸ɺLINQ͕iOSͰམͪΔͱ͔໰୊΋͋ͬͨ
10. σϦήʔτ΍ϥϜμࣜʹ͍ͭͯ·ͱΊهࣄॻ͍ͨࡍ΋ ʮΘ͔ͬͯͳ͔ͬͨʯͱ͔ʮ͜Εɺ஌Βͳ͔ͬͨʯ ͱ͔ͱ͍͏ײ૝Λ͍͖ͨͩ·ͨ͠ɻ ʲLINQͷલʹʳϥϜμࣜʁσϦήʔτʁFunc<T,,TResult>ʁͳਓ΁ͷ·ͱΊʲ஌ͬͯ΄͍͠ʳ
11. Unity΍͍ͬͯΔਓͷதʹ͸ C#ͷ͋Ε͜Ε ࣮͸஌Βͳ͍ਓ΋Ҏ֎ͱ͍ΔͷͰ͸ʁ
12. ͔֬ʹΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷΍ ܕύϥϝʔλͷ੍໿ͱ͔஌Βͳͯ͘΋ ήʔϜ͕࡞Εͳ͘͸ͳ͍Ͱ͕͢ɽɽɽ
13. ͔ͩΒͬͯ ஌Βͳ͍͍ͯ͘Θ͚Ͱ͸ ͳ͍ͱࢥ͏ΜͰ͢Α
14. ࠓ೔͸UnityΛ୊ࡐʹ ීஈͷUnityͷษڧձͰ͸৮ΕΒΕΔ͜ͱ͕গͳ͍ C#ͷݴޠػೳΛ঺հ͠ɺݸਓతͳओுΛߦ͍·͢
15. Έͳ͞Μ΁ͷ͓ئ͍ʂ
16. ஌Βͳ͔ͬͨ͜ͱ͕͋ͬͨํ΁ ʮ͜͜஌Βͳ͔ͬͨʯͱ͔ʮͨ͜͜Ίʹͳͬͨʯ ɹͬͯͭͿ΍͍ͯ͘ΕΔͱخ͍͠Ͱ͢
17. C#ϚελʔͳΈͳ͞Μ΁ ࠓ೔ͷ಺༰͸Έͳ͞Μʹ͸౰ͨΓલͷ͜ͱ͹͔Γͩͱࢥ͍·͢ !Ͳ͏͔ࢲͷҙݟʹɺποίϛ΍൓࿦͓ئ͍͠·͢ʂ ͲΜͲΜͭͿ΍͍͍ͯͩ͘͞
18. ޙ೔ɺΈͳ͞Μͷ͝ҙݟ΍ποίϛΛࢀߟʹ͍͍ͤͯͨͩͯ͞ ผͷϒϩάͱ͔ͰUnityίϛϡೋςΟʔʹ׻ܴͰ͖ͨΒ࠷ߴʂ (Ͱ͖ͨΒ͍͍ͳɽɽɽ)
19. #comuplus)#roomD ͚ͭͯͲΜͲΜͭͿ΍͍ͯ͘ΕΔͱخ͍͠Ͱ͢
20. ·͓͖͑ऴΘΓ
21. ຊηογϣϯͷ಺༰ɾҙݟ͸ొஃऀ͕ॴଐ͢Δ اۀɾϢʔβʔάϧʔϓͷҙݟͰ͸ͳ͘ ొஃऀݸਓͷ΋ͷͰ͢
22. ʲओுʳ
23. ʲओுʳ ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷Λ ঢ়گʹԠͯ͡࢖͓͏
24. IDragHandler void%OnDrag(PointerEventData)ͱ͍͏ϝιουΛ΋ͭ υϥοάݕ஌ʹؔ࿈͢ΔUnityͷΠϯλʔϑΣʔε ͜ΕΛྫʹ·ͣ঺հ͠·͢
25. IDragHandlerΛʰී௨ʹʱ࣮૷͢Δྫ using UnityEngine; using UnityEngine.EventSystems; public class DragSample : MonoBehaviour, IDragHandler { public void OnDrag(PointerEventData pointerData { Debug.Log ("OnDrag"); } }
26. IDragHandlerΛʰ໌ࣔతʹʱ࣮૷͢Δྫ using UnityEngine; using UnityEngine.EventSystems; public class DragSample : MonoBehaviour, IDragHandler { // public͕ͳ͘ͳͬͯϝιου໊ʹΠϯλʔϑΣʔε໊ʮIDragHandler.ʯ͕͍ͭͨ void IDragHandler.OnDrag(PointerEventData pointerData) { Debug.Log ("OnDrag"); } }
27. ҧ͍͸ʁ
28. ΠϯλʔϑΣʔεΛී௨ʹ࣮૷ͨ͠৔߹ // DragSampleܕͷม਺Ͱ΋OnDragϝιου͕ݺ΂Δ // dragSample͸DragSampleܕ dragSample.OnDrag(pointerData);
29. ΠϯλʔϑΣʔεΛ໌ࣔతʹ࣮૷ͨ͠৔߹ // DragSampleܕͷม਺Ͱ͸OnDragϝιου͕ݺ΂ͳ͍ // dragSample.OnDrag(pointerData);ɹࠨ͸ίϯύΠϧΤϥʔ // IDragHandlerܕͷม਺ʹ୅ೖ͢Ε͹ݺ΂Δ IDragHandler handler = dragSample; handler.OnDrag(pointerData);
30. خ͍͠ͷ͔ʁ ࣗ෼͸خ͍͠ͱࢥ͏ʂ
31. ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷Λͨ͠ϝιου͸ ͦͷܕͷม਺ܦ༝Ͱʰݺ΂ͳ͘ͳͬͯ͠·͏ʱ Ͱ͸ͳͯ͘ɺ ʰݺ͹ͤͨ͘ͳ͍৔߹ʹɺݺ΂ͳ͘͢Δ͜ͱ͕Ͱ͖Δʂʱ ͩͱࢥ͏
32. ྫ1 List<T>͸ICollec.on<T>.IsReadOnlyΛ໌ࣔతͳ࣮૷͍ͯ͠Δ
33. ྫ1 List<int> numList = new List<int> {0, 1, 2, 3}; // Լه͸ίϯύΠϧΤϥʔ //bool isReadOnly = numList.IsReadOnly; // ICollection<int> ܦ༝Ͱ͸ݺͼग़ͤΔ ICollection<int> numCollection = numList; bool isReadOnly = numCollection.IsReadOnly;
34. ྫ1 List<T>͸ICollec.on<T>.IsReadOnlyΛ໌ࣔతͳ࣮૷Λ͍ͯ͠Δ ICollec'on<T>ܕͷม਺Ͱ͸༗༻ͳϓϩύςΟ͚ͩͲɺ List<T>ͷม਺Ͱ͸ݺ΂ͳ͍΄͏͕خ͍͠ (List<T>ܕͳΒ͹ఆٛతfalseͳͷ͸౰ͨΓલ͔ͩΒɺIList.IsFixedSize΋ಉ༷)
35. ྫ2 ReadOnlyCollec,on<T>ͷ ICollec'on<T>.Clear΍ICollec'on<T>.AddͳͲ໌ࣔతͳ࣮૷ ReadOnlyͳΜ͔ͩΒɺཁૉૢ࡞͸ͤͨ͘͞ͳ͍ɻݺ͹ͤͨ͘ͳ͍ɻ ICollec'on<T>ܕͳͲͷม਺ʹೖΕͯݺΜͰ͠·ͬͨ৔߹ɺNotSupportedExcep'onΛ౤͛Δ
36. ྫ3 ISerializableΛ࣮૷͢ΔΫϥεͷGetObjectDataϝιου GetObjectDataϝιου͸ɺγϦΞϧԽΠϯϑϥετϥΫνϟ͕ݺͼग़͢΋ͷͰɺ ଞͷϢʔβʔఆٛΫϥε಺ͳͲͰɺ࣮૷ͨ͠Ϋϥεͷม਺Λհͯ͠ݺͿ΋ͷͰ͸ͳ͍ͨΊ h"ps:/ /msdn.microso/.com/ja2jp/library/ms229034(v=vs.100).aspxAΑΓ
37. Ͱ͸͖ͬ͞ͷUnityͷྫʹ໭ͬͯ
38. ԼهͷOnDrag͸ɺUnityͷUIΠϕϯτγεςϜ͕ݺΜͰ͘ΕΔ public class DragSample : MonoBehaviour, IDragHandler { void IDragHandler.OnDrag(PointerEventData pointerData) { Debug.Log ("OnDrag"); } } ϙΠϯτ͸ɺOnDragϝιουΛΠϕϯτγεςϜҎ֎͔Β ݺ͹͍ͤͨͷ͔Ͳ͏͔ͩͱࢥ͏
39. UnityͷUIΠϕϯτγεςϜ͕ݺΜͰ͘ΕΔ ͍ͯ͏͔Ή͠Ζଞ͔Βݺ͹ͤͨ͘ͳ͍ɺݶఆ͍ͨ͠ ͳΒɺΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷Λͨ͠ํ͕ྑ͘ͳ͍ʁ ͱ͍͏ओு
40. ΋ͪΖΜOnDragϝιουΛγεςϜҎ֎͔Βɺ ଞͷΫϥεͳͲ͔Βݺͼग़͢ඞཁ͕͋ΔͳΒ͹ผ
41. ʲओுʳ ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷Λ ঢ়گʹԠͯ͡࢖͓͏ Ͳ͏ࢥ͍·͢ʁ͝ҙݟืूʂ ʮੵۃతͳཧ༝͕ͳ͍৔߹͸ɺΠϯλʔϑΣΠε!ϝϯόʔͷ໌ࣔతͳ࣮૷Λආ͚·͢ʯ@MSDN͚ͩͲ
42. ผͳ࿩Ͱ͕͢ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷ɺΑ͋͘Δઆ໌ͩͱ ʮೋͭͷΠϯλʔϑΣʔεͷϝιουͷҾ਺ͱ໊લ͕ಉ࣌͡ɺ͜ΕΛ࢖͑͹େৎ෉ʔʯ ͱ͍͏঺հ͕ଟ͍ͷͰ͕͢ɺʮList<T>ͷIsReadOnlyʯͱ͔ ʮڞม໭Γ஋ܕ͕ͳ͍͔Β໌ࣔతͳ࣮૷͕໾ཱͭʯͱ͔ͷํ͕ େ੾͕͞ɾ༗༻͕͞఻ΘΔͱࢥ͏ͷ͸ࣗ෼͚ͩʁ
43. ʲओுʳ
44. ObjectͱObject ͳͥͦͷ໊લʹͨ͠ͷʁ
45. ObjectΫϥε
46. ObjectΫϥε • System.ObjectΫϥε • .NET0Framework0ͷશΫϥεͷجຊΫϥεͰɺܕ֊૚ͷϧʔτ • ΩʔϫʔυʮobjectʯɺͰΫϥε໊ΛදͤΔ
47. ObjectΫϥε
48. ObjectΫϥε • UnityEngine.ObjectΫϥε • UnityͰॏཁͳGameObject΍Componentͷ਌Ϋϥε • ͳΜͰͦΜͳ໊લ͚ͭͪΌͬͨͷ·͡Ͱʂʁ
49. Debug.Logͱ͍͏ϩάΛు͘ϝιου public static void Log(object message, Object context); ͞ʔɺͲ͕ͬͪͲͬͪͩʁ
50. Debug.Logͱ͍͏ϩάΛు͘ϝιου public static void Log(object message, Object context); ୈҰҾ਺͕System.ObjectͰɺୈೋҾ਺͕UnityEngine.ObjectͰ ฆΒΘ͍ͬͨ͠Β͋ΓΌ͠ͳ͍
51. ʲओுʳ
52. ʲओுʳ Ϋϥε໊ͷ͔ͿΓΛusingΤΠϦΞεσΟϨΫςΟϒͰ ͍͍͔Μ͡ʹ͢Δ(?)
53. using UnityEngine; public class Sample : MonoBehaviour{ void Start () { // Լه͸UnityEngine.Objectܕ Object unityEngineObject; // Լه͸System.Objectܕ object systemObject; } }
54. using UnityEngine; using System; // <- new! public class Sample : MonoBehaviour{ void Start () { // ίϯύΠϧΤϥʔ // Լه͸System.Object͔UnityEngine.Object͔ᐆດ // Object ambiguousObject; // Լه͸System.Objectܕ object systemObject; } }
55. ͜͜ͰusingΤΠϦΞεσΟϨΫςΟϒΛ࢖ͬͯΈΔ
56. usingΤΠϦΞεσΟϨΫςΟϒ ໊લۭؒ·ͨ͸ܕͷΤΠϦΞεΛ࡞੒Ͱ͖Δػೳ
57. using UnityEngine; using System; using UnityObject = UnityEngine.Object; // <- usingΤΠϦΞεσΟϨΫςΟϒ public class Sample : MonoBehaviour{ void Start () { // Լه͸UnityEngine.Object UnityObject unityEngineObject; // Լه͸System.Objectܕ object systemObject; // ࢒೦ͳ͕ΒɺObject͸ᐆດͳ··ͰίϯύΠϧΤϥʔ // Object ambiguousObject; } }
58. ͏ʔΜɻਖ਼௚ɺඍົʂ ࣮͸͋Μ·ΓUnityEngine.ObjectܕɺίʔυͰॻ͔ͳ͍͠ υΩϡϝϯτͰಡΉ࣌͸ଟ͍͔Βɺ͜ͷ͔ͿΓϚδͰࠞཚ͢Δ͔ΒͭΒ͍
59. ΋͏Ұྫ System.RandomͱUnityEngine.Random
60. UnityEngine.RandomʹΤΠϦΞεΛ ͋ΓͬͪΌ͋Γ͔ͳʁ using UnityEngine; using System; using UnityRandom = UnityEngine.Random; public class Sample : MonoBehaviour{ void Start () { float randomValue = UnityRandom.value; } }
61. ʲओுʳ Ϋϥε໊ͷ͔ͿΓΛͷusingΤΠϦΞεσΟϨΫςΟϒͰ ͍͍͔Μ͡ʹ͢Δ(?) ͷ͸ɺObject͸ඍົ͚ͩΕͲ΋Random͸͋ΓͬͪΌ͋Γ͔΋(ݸਓͷײ૝Ͱ͢)
62. ʲҙݟืूʳ ઌ΄ͲͷೋͭͷྫɺͲ͏ࢥΘΕ·͔͢ʁ ʮ͜Μͳͷ΋͍͍Αʯͱ͔͋Ε͹ڭ͍͑ͯͩ͘͞ʂ
63. ʲओுʳ
64. ʲओுʳ FindObjectOfType<T>ͰίϯύΠϧΤϥʔʁ ܕύϥϝʔλͷ੍໿ͩͥʂ
65. UnityEngine.Object.FindObjectOfType<T>ϝιου ܕΛࢦఆͯ͠ɺήʔϜγʔϯதͷͦͷܕͷΦϒδΣτΛऔಘͰ͖Δ // GameManager͸ࣗ࡞ͷΫϥεͰɺMonoBehaviourΛܧঝ͍ͯ͠Δ GameManager gameManager = FindObjectOfType<GameManager> (); gameManager.StartGameLoop (); GameManagerҎ֎ͷΫϥε͔ΒͰ΋ɺGameManagerͷΦϒδΣΫτΛऔಘͰ͖Δ
66. ࣍ͷίʔυ͸͢΂ͯίϯύΠϧΤϥʔ string str = FindObjectOfType<string> (); // MyClass͸ࣗ࡞ΫϥεɺUnityEngine.ObjectΛܧঝ͍ͯ͠ͳ͍ MyClass myClass = FindObjectOfType<MyClass> (); // ISample͸ࣗ࡞ΠϯλʔϑΣʔε ISample sample = FindObjectOfType<ISample> ();
67. ͳ͔ͥʁ
68. FindObjectOfType<T>͸ UnityEngine.Objectܕʹܕύϥϝʔλͷ੍໿͕͔͔͍ͬͯΔͨΊ T͸UnityEngine.Object͔ͦͷαϒΫϥεͰͳ͍ͱ͍͚ͳ͍ ܕύϥϝʔλͷ੍໿Λ࢖͏ͱδΣωϦοΫͳΫϥε΍ϝιουʹɺ ܕҾ਺ʹࢦఆɾ࢖༻Ͱ͖Δܕͷछྨʹ੍ݶΛՃ͑Δ͜ͱ͕Ͱ͖Δ
69. ͱ͜ΖͰઌ΄ͲͷGameManager͸MonoBehaviourΛܧঝ͍ͯ͠ΔͷͰ ܧঝ֊૚ΛḷΔͱUnityEngine.ObjectΛܧঝ͍ͯ͠Δ ࣗ࡞Ϋϥε͚ͩͰͳ͘ɺϏϧυΠϯͷ߶ମӡಈΛ͔ͭ͞ͲΔRigidBodyͳͲ͍Ζ͍ΖऔಘͰ͖Δ // GameManager͸ࣗ࡞ͷΫϥεͰɺMonoBehaviourΛܧঝ͍ͯ͠Δ GameManager gameManager = FindObjectOfType<GameManager> (); gameManager.StartGameLoop (); ͔͠͠string΍MyClass(UnityEngine.ObjectΛܧঝ͍ͯ͠ͳ͍)͸ίϯύΠϧΤϥʔʹͳΔʂ
70. Լه͸ίϯύΠϧΤϥʔ FindObjectsOfType<T>΋UnityEngine.ObjectͰܕύϥϝʔλͷ੍໿͕͞Ε͍ͯΔ ͜ΕͩͱTʹ͸ɺUnityEngine.ObjectɾͦͷαϒΫϥεҎ֎͕དྷΔՄೳੑ͕͋Δ public class Utility { // TܕͰήʔϜΦϒδΣΫτͷ໊લ͕nameͳ΋ͷΛऔಘ public static T[] FindObjectsOfType<T> (string name) { return Object.FindObjectsOfType<T> () .Where (it => it.name == name) .ToArray (); } }
71. Լه͸OK UnityEngine.ObjectͰܕύϥϝʔλͷ੍໿͕͞Ε͍ͯΔͷͰ Tʹ͸ɺUnityEngine.Object͔ͦͷαϒΫϥε͔͜͠ͳ͍ public class Utility { // TܕͰήʔϜΦϒδΣΫτͷ໊લ͕nameͳ΋ͷΛऔಘ public static T[] FindObjectsOfType<T> (string name) where T : UnityEngine.Object { return Object.FindObjectsOfType<T> () .Where (it => it.name == name) .ToArray (); } }
72. Լه͸ίϯύΠϧΤϥʔ Genericͳϝιου಺Ͱܕύϥϝʔλͷ੍໿ΛTʹߦΘͳ͍ͱ TܕͷΠϯελϯε͸System.Objectͷϝιου͔͠ݺ΂ͳ͍ static T Min<T>(T a, T b) { return a.CompareTo(b) < 0 ? a : b; }
73. Լه͸OK T͸IComparableʹ੍໿͞Ε͍ͯΔͷͰɺ IComparable͕΋ͭCompareToΛݺ΂Δ static T Min<T>(T a, T b) { where T : IComparable return a.CompareTo(b) < 0 ? a : b; }
74. ܕύϥϝʔλͷ੍໿ɺେ੾ʂ
75. ʲ΅΍͖ʳ FindObjectOfType<T>ͷܕύϥϝʔλͷ੍໿ʹ͍ͭͯɺ UnityͷυΩϡϝϯτʹࡌͬͯͳ͍orz ͱ͍͏͔͜ͷΦʔόʔϩʔυࣗମ͕ࡌͬͯͳ͍
76. ʲ΅΍͖ʳ GetComponent<T>ͱ͍͏Α͘࢖͏ϝιου Ҏલ͸Tʹରͯ͠ComponentΫϥεͰ੍໿͕͔͔͍ͬͯ·ͨ͠ ͚Ͳ࢓༷͕มΘ͍ͬͯͨorz ࠓ΋લ΋υΩϡϝϯτʹهࡌͳ͠ɺόʔδϣϯʹΑΔҧ͍ͷهࡌ΋΋ͪΖΜͳ͠orz
77. ͭΒͨΜ
78. ʲҙݟืूʳ ܕύϥϝʔλͷ੍໿ɺ ͜ΜͳϥΠϒϥϦͰ͜Μͳ෩ʹ࢖͍ͬͯͯ໘ന͍ͧʂ ͱ͔͋ͬͨΒڭ͍͑ͯͩ͘͞
79. ʲओுʳ
80. ʲओுʳ ԋࢉࢠͷΦʔόʔϩʔυ΍ܕม׵ԋࢉࢠ͕ ཪଆͰ࢖ΘΕ͍ͯΔ͜ͱΛཧղ͠Α͏
81. ԋࢉࢠͷΦʔόʔϩʔυ ϢʔβʔఆٛܕͰ΋+΍"ͳͲͷԋࢉࢠ͕࢖͑ΔΑ͏ʹͳΔ΍ͭ
82. ԋࢉࢠͷΦʔόʔϩʔυͱ͍͑͹ DateTimeܕͱTimeSpanܕͷ+ͱ,ΦϖϨʔλͰ͕͢ (Ͱ͢ΑͶʁ΋ͬͱ͍͍ྫ͋ͬͨΒڭ͍͑ͯͩ͘͞ɻ) DateTime dateTime = DateTime.Now + TimeSpan.FromSeconds (30.0); TimeSpan duration = DateTime.Now - GetStartedTime ();
83. UnityͰ΋େ׆༂
84. Ґஔ౳Λ͋ΒΘ͢Vector3΍ճసΛද͢QuaternionͰ ԋࢉࢠͷΦʔόʔϩʔυ͕ఆٛ͞Ε͍ͯΔ // Quaternion͸࢛ݩ਺ɻճసɾ࢟੎౳Ͱ࢖͏ Quaternion rotation = Quaternion.Euler (0, 0, 90.0F); Vector3 vectorA = new Vector3 (1.0F, 1.0F, 0.0F); Vector3 vectorB = new Vector3 (1.0F, -1.0F, 0.0F); Vector3 addedVector = vectorA + vectorB; Vector3 scaledVector = 2.0F * vectorA; Vector3 rotatedVector = rotation * vectorB;
85. ॻ੶ɾ΢ΣϒαΠτͰ΋ཚ༻ېࢭͱ঺հ͞Ε͍ͯΔ͜ͷػೳ ৽ͨʹࣗ࡞ΫϥεͰఆٛ͢ΔͳΒ͔ͬ͠Γͬ͘͡Γߟ͑ͯ ֮ޛΛ࣋ͬͯ΍Δ΂͖ͩͱࣗ෼͸ࢥ͍·͢
86. ܕม׵ԋࢉࢠ ໌ࣔతʹܕΛࢦఆ͢Ε͹ܕม׵Λߦ͑Δ໌ࣔతܕม׵ͱ ܕΛࢦఆ͠ͳͯ͘΋ඞཁʹͳͬͨΒม׵ͯ͘͠ΕΔ҉໧తܕม׵
87. ܕม׵ԋࢉࢠͱ͍͑͹ System.DecimalܕͰ͢ΑͶʁ // ଟ͘ͷ਺஋ܕ͔Β҉໧తܕม׵ decimal num1 = 1; decimal num2 = 2.0F; decimal num3 = 3.0; // ଟ͘ͷ਺஋ܕ΁ͷ໌ࣔతܕม׵ int numA = (int)num1; float numB = (float)num2; double numC = (double)num3;
88. UnityͰ΋݁ߏ࢖ΘΕ͍ͯΔ
89. Colorߏ଄ମ͔ΒColor32ߏ଄ମ΁ͷ҉໧తܕม׵ Colorߏ଄ମ͸৭Λද֤͠੒෼͸[0.0F,1.0F]ɺColor32ߏ଄ମ΋৭Λද֤͠੒෼͸byteܕ σβΠφʔ͔Β৭ͷ੒෼Λ੔਺Ͱ΋Βͬͨ࣌ɺColor32ߏ଄ମ͸֤੒෼Λͦͷ··͔͚Δ // ॳظԽָ͕ͳColor32ߏ଄ମͰॳظԽͯ͠ // ҉໧తܕม׵ΛͰΑ͘࢖͏Colorʹม׵ Color color = new Color32(255, 128, 255, 255); ίʔυதͰ৭Λఆٛ͢Δ͜ͱ͕ଟ͍ͳΒ݁ߏศརͩͱࢥ͏
90. Vector3ߏ଄ମ͔ΒVector2ߏ଄ମ΁ͷ҉໧తܕม׵ // z࠲ඪ͸ແࢹ͞ΕΔ Vector2 vector2d = new Vector3 (1.0F, 1.0F, 0.0F); // z࠲ඪ͸0.0F͕ૠೖ͞ΕΔ Vector3 vector3d = new Vector2 (1.0F, 1.0F); ݁ߏศརʂͩͱࢥ͏ɻࣗ෼͸ɻ
91. UnityEngine.Object͔Βbool΁ͷܕม׵ // Rigidbody͸ܧঝ֊૚ΛḷΔͱUnityEngine.ObjectʹͨͲΓண͘ Rigidbody rigidbody = GetComponent<Rigidbody>(); // Լه͸if (rigidbody != null) { ͱ࣮࣭ಉ͡Β͍͠ if (rigidbody) { rigidbody.AddForce(10.0F * Vector3.forward); } ͜Ε͸ศརͬͪΌศརͩͱࢥ͏͔΋͠Εͳ͍͚ΕͲɺ ͦΜͳʹ͏Ε͘͠ͳ͍ɻͲ͏ࢥ͍·͢ʁ
92. ʲओுʳ ԋࢉࢠͷΦʔόʔϩʔυ΍ܕม׵ԋࢉࢠ͕ ཪଆͰ࢖ΘΕ͍ͯΔ͜ͱΛཧղ͠Α͏ ࣗ෼Ͱແܭըʹఆٛ͢Δͷ͸ྑ͘ͳ͍ͱࢥ͏͚ΕͲɺཪଆͰͲ͏ͳ͍ͬͯΔͷ͔೺Ѳ͢Δͷ͸େ੾ʂ (͋ͱVector3ͷ==ͱ͔΋େࣄ)
93. ʲओுʳ
94. ʲओுʳ varېࢭͱ͔ݴΘͳ͍Ͱ͓ئ͍ʂvar࢖͓͏ͥʂ
95. var޷͖Ͱ͢ʂvarྑ͘ͳ͍Ͱ͔͢ʁ
96. UnityͰ΋େ׆༂ // ӈลͰRigidbodyܕͬͯॻ͍ͯ͋Δ͡ΌΜ! // Rigidbody rigidbody = GetComponent<Rigidbody> (); var rigidbody = GetComponent<Rigidbody> (); // ӈลͰGameManagerܕͬͯॻ͍ͯ͋Δ͡ΌΜ! // GameManager gameManager = FindObjectOfType<GameManager> (); var gameManager = FindObjectOfType<GameManager> ();
97. దࡐదॴͰvarΛ࢖͏ // ໭Γ஋ܕ͕఻ΘΓζϥ͍ɾࣗ໌Ͱͳ͍ϝιουͰvar࢖͓͏ͱ͸ݴΘͳ͍ // var ambiguousTypeObject = GetAmbiguousTypeObject (): // ͜͏͍͏৔߹ɺ͸͖ͬΓܕΛ໌ࣔͨ͠΄͏͕͍͍ͱࢥ͏ SampleType ambiguousTypeObject = GetAmibigaousTypeObject (): // Ͱ΋ӈล͔Βܕ͕ࣗ໌ͳΒvar࢖ͬͨ΄͏͕͖ͬ͢Γ͢Δʂ // Dictionary<string, List<LongLongTypeName>> dictionary // = new Dictionary<string, List<LongLongTypeName>> (); var dictionary = new Dictionary<string, List<LongLongTypeName>> ();
98. ൵͍͔͠ͳ ʰvar࢖͏ͳʱɺʰvar࢖͍ͨ͘ͳ͍ʱͱ͍͏ํ͕ͨ·ʹ͍Δorz
99. var࢖͍ͨ͘ͳ͍ਓͷओு1 ʮܕ͕ͳ͍ͷؾ࣋ͪѱ͍͡ΌΜʯ
100. ʮܕ͕ͳ͍ͷؾ࣋ͪѱ͍͡ΌΜʯ΁ͷ൓࿦ ܕ͕ͳ͍ͷͰ͸ͳͯ͘ɺ҉໧తʹܕ͕ࢦఆ͞Ε͍ͯΔ͚ͩ
101. var࢖͍ͨ͘ͳ͍ਓͷओு2 ʮܕॻ͍ͯͳ͍ͱ෼͔ΓͣΒ͘ͳ͍?ʯ
102. ʮܕॻ͍ͯͳ͍ͱ෼͔ΓͣΒ͘ͳ͍?ʯ΁ͷ൓࿦ ແཧʹvar࢖͏ͱ෼͔Γζϥ͍ͱ͖΋͋Δ͔Βɺ ͦ͏͍͏࣌͸࢖Θͳͯ͘΋͍͍ͱࢥ͏ ͚Ͳ໌Β͔ʹΘ͔Δ࣌͸ېࢭ͢Δཧ༝ʹ͸ͳΒͳ͍ͱࢥ͏ʂ
103. var࢖͍ͨ͘ͳ͍ਓͷओு3 ʮList<string>ΛIList<string>ม਺ʹೖΕ͍͚ͨΕͲɺ var͸List<string>ܕʹͳΔ͡ΌΜʯ
104. ʮList<string>ΛIList<string>ม਺ʹೖΕ͍͚ͨΕͲɺvar͸List<string>ܕʹͳΔ͡ΌΜʯ΁ͷ൓࿦1 ϝιουͷฦΓ஋౳Ͱɺద੾ͳந৅తͳܕΛฦ͢ͷେࣄͩΑͶʂ ͚Ͳvar͸ϝιουϩʔΧϧείʔϓݶఆͩ͠Өڹൣғ͸ ͦΜͳେ͖͘ͳ͍ΑͶ?ϩʔΧϧείʔϓͰ͸List<T>Ͱ΋Α͘Ͷʁ ·͔͞ͱ͸ࢥ͏͚ΕͲ100ߦ1000ߦͳϝιουॻ͔ͳ͍ΑͶʁ
105. ʮList<string>ΛIList<string>ม਺ʹೖΕ͍͚ͨΕͲɺvar͸List<string>ܕʹͳΔ͡ΌΜʯ΁ͷ൓࿦2 IList<string>ʹೖΕ͍͍ͨͬͯ͏͚ΕͲɺ ຊ౰ʹIList<string>Ͱѻ͍͍ͨͷʁ string[]΋IList<string>࣮૷͍ͯ͠ΔΜ͚ͩΕͲʁ
106. ʲҙݟืूʳ varېࢭͬͯݴΘΕͨ࣌ͷ͍͍ײ͡ͷ൓࿦
107. ʲओுʳ
108. ʲओுʳ লུՄೳͳҾ਺(ΦϓγϣϯҾ਺)ɺศརʂ ͚ΕͲݸਓతʹ͸σϑΥϧτҾ਺ͬͯݴΘͳ͍Ͱ΄͍͠ʂ
109. লུՄೳͳҾ਺(ΦϓγϣϯҾ਺)͕ͳΜͳͷ͔͸ׂѪ
110. ݸਓతʹ͸σϑΥϧτҾ਺ͬͯݴΘͳ͍Ͱ΄͍͠ʂ
111. C++Ͱ͸σϑΥϧτҾ਺͍ͬͯ͏ΜͰ͢ΑͶʁ ͚ΕͲC#Ͱ͸লུՄೳͳҾ਺(ΦϓγϣϯҾ਺)ͳΜ͔ͩΒɺC#ͷݴ༿Λ࢖ͬͨํ͕͍͍ͱࢥ͏ ผʹC++ΛσΟεΔҙਤ͸શ͘ͳ͍Ͱ͢
112. ʮJavaͩͱ͜͏ݴ͏ʯʮC++ͩͱ͜͏ݴ͏ʯͰ͸ͳͯ͘ ڷʹೖͬͯ͸ڷʹै͑ɺC#ͷݴ༿Λ࢖ͬͨํ͕͍͍ͱࢥ͏ ଞͷݴޠͷྲّྀΛೖΕΔͱ͖͸த్൒୺ʹ΍Βͣɺ͔ͬ͠Γపఈతʹ΍Δ΂͖ͩͱࢥ͏
113. ʲओுʳ
114. ʲओுʳ ໊લ෇͖Ҿ਺ศརʂ ϝιουఆٛ͢Δͱ͖͸Ҿ਺໊΋େ੾ʹʂ
115. ໊લ෇͖Ҿ਺͕ͳΜͳͷ͔͸ׂѪ
116. Ҏલ͜Μͳਏ͍͜ͱ͕͋Γ·ͨ͠ UniLinqͱ͍͏ϥΠϒϥϦΛ͍ͭͬͯͨ͘ࡍؾ͍ͮͨɻ
117. LINQͷCountϝιουɺFunc<TSource,2Boolean>ܕͷσϦήʔτͷҾ਺໊͸ ਖ਼͘͠͸ɺʰpredicateʱͳͷ͚ͩΕͲʂ // Լه͸ίϯύΠϧΤϥʔ // int count = numList.Count(predicate: num => num > 90); // Ҿ਺໊͕࢓༷ͱҧ͏ int count = numList.Count(selector: num => num > 90); Unity͕࢖͍ͬͯΔݹ͍mono͕ؒҧ͍ͬͯͨorz
118. ͭΒ͍
119. ໊લ෇͖Ҿ਺͕͋ΔC#Ͱ͸ Ҿ਺໊Λม͑ΔͱഁյతͳมߋʹͳΔ͠ ద౰ͳҾ਺໊͚ͭͪΌμϝ
120. ʲओுʳ
121. ʲओுʳ ܕͷنఆ஋Λཧղͯ͠ มͳόάΛճආ͠Α͏ͥ
122. ࣍ͷίʔυ͸໰୊͕͋Δ FirstOrDefault͸ɺҾ਺ͷσϦήʔτ͕ද͢৚݅Λຬͨ͢࠷ॳͷཁૉΛऔಘ͢Δ ʰຬͨ͢ཁૉ͕ͳ͔ͬͨ৔߹ʱ͕͜͜ͰͷϙΠϯτ Vector3 playerPosition = GetPlayerPosition(); List<Vector3> enemyPositions = LoadEnemyPositions(); float attakRange = 5.0F; Vector3 targetEnemyPosition = enemyPositions .FirstOrDefault(p => Vector3.Distance(playerPosition, p) <= attakRange);
123. ຬͨ͢ཁૉ͕ͳ͔ͬͨ৔߹ɺFirstOrDefault͸ܕͷنఆ஋Λฦ͢ʂ nullΛฦ͢ͱ͍͏ͷ͸ؒҧ͍ʂFirstOrNull͡Όͳ͍͠ null͸ࢀরܕͷنఆ஋Ͱɺ஋ܕͷنఆ஋͸null͡Όͳ͍
124. ܕͷنఆ஋ • ࢀরܕ͸null • ߏ଄ମ͸͢΂ͯͷϝϯόΛنఆ஋ͰॳظԽͨ͠΋ͷ • int͸0 • float͸0.0F • bool͸false (ུ)
125. Vector3͸ߏ଄ମͳͷͰنఆ஋͸ શ෦ͷϝϯόΛنఆ஋ͰॳظԽͨ͠΋ͷ (x,$y,$z͕͢΂ͯ0ͳ΋ͷ)
126. ৚݅Λຬͨ͢ཁૉ͕ଘࡏ͠ͳ͔ͬͨ৔߹ targetEnemyPosi.on͸new0Vector3(0.0F,00.0F,00.0F)ͱ͍͏݁ՌʹͳΔɻ(nullͰ͸ͳ͍) Vector3 playerPosition = GetPlayerPosition(); List<Vector3> enemyPositions = LoadEnemyPositions(); float attakRange = 5.0F; Vector3 targetEnemyPosition = enemyPositions .FirstOrDefault(p => Vector3.Distance(playerPosition, p) <= attakRange); ɹʰਖ਼͍͠஋͕ೖ͍ͬͯΔͱࢥͬͨΒɺ࣮͸نఆ஋͕ೖ͍ͬͯͨͨΊόάʂʱʹؾΛΑ͏
127. ʲओுʳ
128. ʲओுʳ List<T>ͷ୅ΘΓʹ ReadOnlyCollec,on<T>Λݕ౼͠Α͏
129. (ྫ) PlayerΫϥε͸List<Item>ܕͷItemsϓϩύςΟΛ࣋ͭ ͜ͷItemsΛΫϥε֎෦ʹެ։͍ͨ͠ ͚Ͳத਎ͷॻ͖׵͑ͳͲ͸Ϋϥε֎෦Ͱ͞Εͨ͘ͳ͍
130. ͜͏͢Ε͹҆৺ʁ public class Player { /*ུ*/ public List<Item> Items { get; private set; } } Ͱ͸ͳ͍ʂ
131. μϝͳྫ Player player = GetPlayer(); // ͜Ε͸Ͱ͖ͳ͍͚ΕͲ // player.Items = new List<Item>(); // ී௨ʹ֎෦͔ΒList<T>ͷϝιουܦ༝Ͱத਎Λ͍͡ΕΔ player.Items.Clear();
132. Ͱ͸Ͳ͏͢Δʁ
133. Ҋ1"๷ޚతίϐʔΛ͢Δ public class Player { /*ུ*/ private List<Item> items; public List<Item> Items { get { return new List<Item>(items); } } } ಺෦ͷϦετϝϯόͷෳ੡Λ֎෦ʹެ։͢Δ ͚ΕͲɺ͜ΕͩͱʮΫϥε಺ͷΞΠςϜͷϦετͷσʔλ͸͍͡ΕͳΑʯʮ๷ޚతίϐʔͨ͠Αʯ ͬͯ͜ͱ͕ͺͬͱݟͰ఻ΘΒͳ͍ɻPlayerΫϥεͷίʔυ'or'υΩϡϝϯτΛಡ·ͳ͍ͱ͍͚ͳ͍
134. Ҋ2"ϓϩύςΟΛIEnumerable<T>ܕʹ͢Δ public class Player { /*ུ*/ private List<Item> items; public IEnumerable<Item> Items { get { return items; } } } ʮ͍͡Εͳ͍Αʯͱ͍͏͜ͱ͸఻ΘΔ͚ΕͲɺʮ֬ఆ͍ͯ͠ΔσʔλͩΑʯ͕఻ΘΒͳ͍ ʮ஗ԆධՁ͞ΕΔ஋ʁʯʮ಺෦Ͱ͸Ϧετɾ഑ྻͰอ࣋ͤͣDBʹ͍͍ͪͪ໰͍߹ΘͤͯΔʁʯ ͬͯצҧ͍͞ΕΔՄೳੑ͋Γɻ݁ہPlayerΫϥεͷίʔυ͔υΩϡϝϯτΛಡ·ͳ͍ͱ͍͚ͳ͍
135. Ҋ3"ϓϩύςΟΛIReadOnlyList<T>ܕʹ͢Δ public class Player { /*ུ*/ private List<Item> items; public IReadOnlyList<Item> Items { get { return items; } } } ʮ֎෦͔Βͩͱ͍͡Εͳ͍Αʯ΋ʮ஗ԆධՁ͡Όͳͯ֬͘ఆ͍ͯ͠ΔσʔλͩΑʯ΋఻ΘΔ ʲ൵ใʳ͚ͩͲUnityͩͱ࢖͑ͳ͍ʲக໋తʳ .NET%4.5Ͱొ৔ͨ͠ΠϯλʔϑΣʔε͔ͩΒorz
136. ͦ͜ͰReadOnlyCollec,on<T>Ͱ͢Αʂ
137. ReadOnlyCollec,on<T> ࢦఆͨ͠ϦετΛϥοϓ͢ΔಡΈऔΓઐ༻ͷϥούʔͰɺϥοϓର৅ͷத਎͕มΘΔͱ͍ͭ͜΋มΘΔ IEnumerable<T>ɺICollec1on<T>ɺIList<T>ͳͲͳͲΛ࣮૷͍ͯ͠Δɻ IList<T>.Addͱ͔ཁૉΛมߋ͢Δܥͷϝιου͸ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷Λ͍ͯͯ͠ɺ ΠϯλʔϑΣʔεܕܦ༝Ͱͦ͏͍͏ͷΛݺͼग़͢ͱNotSupportedExcep-onΛ౤͛Δ
138. Ҋ4"ϓϩύςΟΛReadOnlyCollec.on<T>ܕʹ͢Δ public class Player { /*ུ*/ private List<Item> items; public ReadOnlyCollection<Item> Items { get { return new ReadOnlyCollection<Item>(items); } } } ΋͘͠͸ɺ(ҙຯ͸มΘͬͯ͘Δ͚ΕͲ) public class Player { /*ུ*/ public ReadOnlyCollection<Item> Items { get ; private set; } }
139. ʮ֎෦͔Βͩͱ͍͡Εͳ͍Αʯ΋ ʮ஗ԆධՁ͡Όͳͯ֬͘ఆ͍ͯ͠ΔσʔλͩΑʯ΋఻ΘΔ UnityͰ΋࢖͑Δ(<(͜͜ॏཁ)
140. ʲ࣭໰ʳ .NET%Framework%4.5Ҏ্͕࢖͑Δ৔߹ɺ IReadOnlyList<T>͕ͬͯͬͭΓ࢖͍·͢ʁ
141. ʲओுʳ
142. ओு TransformͱࢠڙΦϒδΣΫτͷྻڍͱGetEnumerator
143. TransformΫϥε ήʔϜதͷΦϒδΣΫτͷҐஔɾେ͖͞ɾճసΛอ࣋͢ΔΫϥε ΦϒδΣΫτؒͷ਌ࢠߏ଄΋͍࢘ͬͯΔ
144. ର৅TransoformͷࢠΦϒδΣΫτ(ͷTransform)ͷྻڍ ɹ // ର৅ͷࢠڙΦϒδΣΫτͷ໊લΛදࣔ foreach(Transform childTransform in transform) { Debug.Log(childTransform.name); // ໊લΛදࣔ }
145. ͳͥ͜Ε͕Ͱ͖Δͷ͔ʁ List<T>΍഑ྻΈ͍ͨͳ͜ͱ͕Ͱ͖Δͷ͔ʁ
146. Transform͕GetEnumeratorϝιουΛ࣮૷͍ͯͯ͠ ͦΕ͕ࢠڙΦϒδΣΫτΛྻڍ͢ΔΑ͏ͳ࢓༷͔ͩΒͰ͢ΑͶɻ (μοΫλΠϐϯάͳΞϨ)
147. ·ͱΊ
148. ผʹGetEnumerator஌Βͳͯ͘΋ࢠཁૉͷྻڍͰ͖Δ ΠϯλʔϑΣʔεͷ໌ࣔతͳ࣮૷΍ܕύϥϝʔλͷ੍໿ ஌Βͳͯ͘΋ήʔϜ͸࡞ΕΔ
149. ͚ΕͲ஌͍ͬͯͨํ͕͍͍ͱࢥ͏ ࠔͬͨ࣌ɺ͍Ζ͍ΖղܾͰ͖Δ C#Β͍͠ίʔυ͕͍Ζ͍Ζॿ͚ͯ͘ΕΔͱࢥ͏
150. ϓϩάϥϛϯάݴޠ͸ಓ۩ ͔ͩΒͦ͜ద౰Ͱ͍͍Θ͚͸ͳ͘ ͔ͬ͠Γͱ࢖͍͜ͳ͍ͨ͠
151. ͪΌΜͱษڧ͍ͨͥ͠C#ʂ
152. ͭͬ͜Έ͓଴ͪͯ͠·͢
153. ɹ UnityͰC#Λֶͼ࢝Ίͨࢲͷओு ɹ @RyotaMurohoshi 2015/09/26(౔)*Comm*Tech*Fes4val