change unit attack representation and implement sword

1 files changed, 18 insertions, 0 deletions

diff --git a/go/game/range.go b/go/game/range.go
index ab86c44e..6e04d21f 100644
--- a/go/game/range.go
+++ b/go/game/range.go
@@ -4,6 +4,24 @@ import (
 	"math"
 )
 
+func DistanceBetweenPositions(origin, pos Position) int {
+	x, y := float64(pos.X-origin.X), float64(pos.Y-origin.Y)
+	ax, ay := math.Abs(x), math.Abs(y)
+
+	var abs float64
+	if pos.X > pos.Y {
+		abs = ax + math.Floor(ay/2)
+	} else {
+		abs = ay + math.Floor(ax/2)
+	}
+
+	return int(abs)
+}
+
+func DistanceBetweenPermanents(p1, p2 Permanent) int {
+	return DistanceBetweenPositions(p1.Tile().Position, p2.Tile().Position)
+}
+
 func IsPositionInRange(origin Position, pos Position, r int) bool {
 	x, y := float64(pos.X-origin.X), float64(pos.Y-origin.Y)
 	ax, ay := math.Abs(x), math.Abs(y)