more legs

core/src/mindustry/entities/Leg.java

@@ -0,0 +1,8 @@
+package mindustry.entities;
+
+import arc.math.geom.*;
+
+public class Leg{
+    public final Vec2 joint = new Vec2(), base = new Vec2(), target = new Vec2();
+    public boolean moving = false;
+}