Add: HistoryRecordManager

src/game/lib/history_record_manager.js

@@ -0,0 +1,82 @@
+class HistoryRecordData {
+
+	constructor(date, record) {
+		this.date = date;
+		this.record = record;
+	}
+}
+
+
+
+class HistoryRecordManager {
+
+	constructor() {
+		this.clear();
+	}
+
+	push(historyRecordData) {
+		this.historyRecords.push(historyRecordData);
+
+		this.minValueOfRecord = this.minValueOfArray();
+		this.maxValueOfRecord = this.maxValueOfArray();
+	}
+
+	clear() {
+		this.historyRecords = [];
+
+		this.minValueOfRecord = 0;
+		this.maxValueOfRecord = 0;
+	}
+
+	get count() {
+		return this.historyRecords.length;
+	}
+
+	getAt(index) {
+		return this.historyRecords[index];
+	}
+
+	getDateAt(index) {
+		return this.historyRecords[index].date;
+	}
+
+	getRecordAt(index) {
+		return this.historyRecords[index].record;
+	}
+
+	minValueOfArray() {
+		let numberArray = this.getRecordArray(this.historyRecords);
+		return Math.min.apply(Math, numberArray);
+	}
+
+	maxValueOfArray() {
+		let numberArray = this.getRecordArray(this.historyRecords);
+		return Math.max.apply(Math, numberArray);
+	}
+
+	underValueForGraph() {
+		let minNumberOfDigits = NumberUtil.numberOfDigits(this.minValueOfRecord);
+		let underMinValue =
+			Math.floor( (this.minValueOfRecord / Math.pow(10, minNumberOfDigits - 2) ) )
+			* Math.pow(10, minNumberOfDigits - 2 );
+		return underMinValue;
+	}
+
+	upperValueForGraph() {
+		let maxNumberOfDigits = NumberUtil.numberOfDigits(this.maxValueOfRecord);
+		let underMaxValue =
+			Math.ceil( (this.maxValueOfRecord / Math.pow(10, maxNumberOfDigits - 2) ) )
+			* Math.pow(10, maxNumberOfDigits - 2);
+		return underMaxValue;
+	}
+
+	getRecordArray() {
+		let numberArray = [];
+		for(let data of this.historyRecords) {
+			numberArray.push(data.record);
+		}
+		return numberArray;
+	}
+
+
+}

src/game/lib/number_util.js

@@ -4,4 +4,8 @@ class NumberUtil {
 		return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
 	}
 
+	static numberOfDigits(number) {
+		return Math.floor(Math.log(number) / Math.LN10 + 1);	// bug : 1000 -> expected 4 but 3
+	}
+
 }