Implemented ground mech boosting

core/src/mindustry/entities/comp/VelComp.java

@@ -0,0 +1,31 @@
+package mindustry.entities.comp;
+
+import arc.math.geom.*;
+import arc.util.*;
+import mindustry.annotations.Annotations.*;
+import mindustry.gen.*;
+
+@Component
+abstract class VelComp implements Posc{
+    @Import float x, y;
+
+    final Vec2 vel = new Vec2();
+    transient float drag = 0f;
+
+    //velocity needs to be called first, as it affects delta and lastPosition
+    @MethodPriority(-1)
+    @Override
+    public void update(){
+        move(vel.x * Time.delta(), vel.y * Time.delta());
+        vel.scl(1f - drag * Time.delta());
+    }
+
+    boolean moving(){
+        return !vel.isZero(0.001f);
+    }
+
+    void move(float cx, float cy){
+        x += cx;
+        y += cy;
+    }
+}