1 files changed, 15 insertions, 0 deletions
diff --git a/go/game/player.go b/go/game/player.go
index cb89e1ae..78b4637e 100644
--- a/go/game/player.go
+++ b/go/game/player.go
@@ -52,6 +52,21 @@ func (p *Player) resourceGain() int {
 	}
 }
 
+func (p *Player) UpkeepGain() int {
+	return p.resourceGain() - p.UpkeepCost()
+}
+
+func (p *Player) UpkeepCost() int {
+	cost := 0
+	for _, u := range p.gameState.Units {
+		if u.Controller() != p {
+			continue
+		}
+		cost += u.Upkeep
+	}
+	return cost
+}
+
 func (p *Player) gainResource(gain int) {
 	p.Resource += gain
 }