Add coding to family 4

Sources/FirebladeECS/Family4.swift

@@ -51,6 +51,25 @@ public struct Requires4<A, B, C, D>: FamilyRequirementsManaging where A: Compone
     }
 }
 
+extension Requires4: FamilyEncoding where A: Encodable, B: Encodable, C: Encodable, D: Encodable {
+    public static func encode(components: (A, B, C, D), into container: inout KeyedEncodingContainer<DynamicCodingKey>, using strategy: CodingStrategy) throws {
+        try container.encode(components.0, forKey: strategy.codingKey(for: A.self))
+        try container.encode(components.1, forKey: strategy.codingKey(for: B.self))
+        try container.encode(components.2, forKey: strategy.codingKey(for: C.self))
+        try container.encode(components.3, forKey: strategy.codingKey(for: D.self))
+    }
+}
+
+extension Requires4: FamilyDecoding where A: Decodable, B: Decodable, C: Decodable, D: Decodable {
+    public static func decode(componentsIn container: KeyedDecodingContainer<DynamicCodingKey>, using strategy: CodingStrategy) throws -> (A, B, C, D) {
+        let compA = try container.decode(A.self, forKey: strategy.codingKey(for: A.self))
+        let compB = try container.decode(B.self, forKey: strategy.codingKey(for: B.self))
+        let compC = try container.decode(C.self, forKey: strategy.codingKey(for: C.self))
+        let compD = try container.decode(D.self, forKey: strategy.codingKey(for: D.self))
+        return Components(compA, compB, compC, compD)
+    }
+}
+
 extension Nexus {
     public func family<A, B, C, D>(
         requiresAll componentA: A.Type,

Tests/FirebladeECSTests/Base.swift

@@ -43,11 +43,18 @@ class Party: Component {
     }
 }
 
-class Color: Component {
-    var r: UInt8 = 0
-    var g: UInt8 = 0
-    var b: UInt8 = 0
+final class Color: Component {
+    var r: UInt8
+    var g: UInt8
+    var b: UInt8
+
+    init(r: UInt8 = 0, g: UInt8 = 0, b: UInt8 = 0) {
+        self.r = r
+        self.g = g
+        self.b = b
+    }
 }
+extension Color: Codable { }
 
 class Index: Component {
     var index: Int

Tests/FirebladeECSTests/FamilyCodingTests.swift

@@ -155,4 +155,70 @@ final class FamilyCodingTests: XCTestCase {
         try family.decodeMembers(from: jsonData, using: &jsonDecoder)
         XCTAssertEqual(family.count, 2)
     }
+
+    func testEncodeFamily4() throws {
+        let nexus = Nexus()
+
+        let family = nexus.family(requiresAll: MyComponent.self, YourComponent.self, Position.self, Color.self)
+        family.createMember(with: (MyComponent(name: "My Name", flag: true), YourComponent(number: 1.23), Position(x: 1, y: 2), Color(r: 1, g: 2, b: 3)))
+        family.createMember(with: (MyComponent(name: "Your Name", flag: false), YourComponent(number: 3.45), Position(x: 3, y: 4), Color(r: 4, g: 5, b: 6)))
+        XCTAssertEqual(family.count, 2)
+
+        var jsonEncoder = JSONEncoder()
+        let encodedData = try family.encodeMembers(using: &jsonEncoder)
+        XCTAssertGreaterThanOrEqual(encodedData.count, 250)
+    }
+
+    func testDecodeFamily4() throws {
+        let jsonString = """
+        [
+          {
+            "Color": {
+              "r": 1,
+              "g": 2,
+              "b": 3
+            },
+            "Position": {
+              "x": 1,
+              "y": 2
+            },
+            "MyComponent": {
+              "name": "My Name",
+              "flag": true
+            },
+            "YourComponent": {
+              "number": 1.2300000190734863
+            }
+          },
+          {
+            "Color": {
+              "r": 4,
+              "g": 5,
+              "b": 6
+            },
+            "Position": {
+              "x": 3,
+              "y": 4
+            },
+            "MyComponent": {
+              "name": "Your Name",
+              "flag": false
+            },
+            "YourComponent": {
+              "number": 3.4500000476837158
+            }
+          }
+        ]
+        """
+
+        let jsonData = jsonString.data(using: .utf8)!
+
+        let nexus = Nexus()
+
+        let family = nexus.family(requiresAll: YourComponent.self, MyComponent.self, Position.self, Color.self)
+        XCTAssertTrue(family.isEmpty)
+        var jsonDecoder = JSONDecoder()
+        try family.decodeMembers(from: jsonData, using: &jsonDecoder)
+        XCTAssertEqual(family.count, 2)
+    }
 }

Tests/FirebladeECSTests/XCTestManifests.swift

@@ -39,11 +39,13 @@ extension FamilyCodingTests {
     //   `swift test --generate-linuxmain`
     // to regenerate.
     static let __allTests__FamilyCodingTests = [
+        ("testDecodeFamily4", testDecodeFamily4),
         ("testDecodingFamily1", testDecodingFamily1),
         ("testDecodingFamily2", testDecodingFamily2),
         ("testDecodingFamily3", testDecodingFamily3),
         ("testEncodeFamily2", testEncodeFamily2),
         ("testEncodeFamily3", testEncodeFamily3),
+        ("testEncodeFamily4", testEncodeFamily4),
         ("testEncodingFamily1", testEncodingFamily1)
     ]
 }