graduation: prevent negative points

1 files changed, 12 insertions, 1 deletions

diff --git a/src/graduation-common.ts b/src/graduation-common.ts
index 3c90e34..6ef0031 100644
--- a/src/graduation-common.ts
+++ b/src/graduation-common.ts
@@ -119,6 +119,7 @@ class Graduation {
 	green: number = 0;
 	orange: number = 0;
 	red: number = 0;
+	nettoPoints: number = 0;
 	mandatory: number = 0;
 	level: number = 1;
 	changes: Array<GraduationChange> = [];
@@ -147,13 +148,17 @@ class Graduation {
 		switch (change.change) {
 			case "Grün":
 				this.green++;
+				this.nettoPoints++;
 				break;
 
 			case "Orange":
 				this.orange++;
+				if (this.nettoPoints > 0) this.nettoPoints--;
 				break;
 
 			case "Rot":
+				if (this.nettoPoints > 3) this.nettoPoints -= 2;
+				else this.nettoPoints = 0;
 				this.red++;
 				break;
 
@@ -163,6 +168,7 @@ class Graduation {
 				this.green = 0;
 				this.orange = 0;
 				this.red = 0;
+				this.nettoPoints = 0;
 				break;
 
 			case "CoachZuweisung":
@@ -189,6 +195,7 @@ class Graduation {
 		this.green = 0;
 		this.orange = 0;
 		this.red = 0;
+		this.nettoPoints = 0;
 		this.mandatory = 0;
 		this.level = 1;
 		this.changes = [];
@@ -216,9 +223,13 @@ class Graduation {
 
 	/**
 	 * Return the combined value of all points.
+	 *
+	 * Negative values are not possible. Positive points earned after any negativ
+	 * points always count. Two consecutive orange points followed by a single
+     * green point will result in one netto point.
 	 */
 	getNettoPoints(): number {
-		return this.green - this.orange - this.red * 2;
+		return this.nettoPoints;
 	}
 }