Implemented ground mech boosting

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

@@ -0,0 +1,41 @@
+package mindustry.entities.comp;
+
+import mindustry.annotations.Annotations.*;
+import mindustry.content.*;
+import mindustry.entities.*;
+import mindustry.gen.*;
+import mindustry.world.blocks.environment.*;
+
+import static mindustry.Vars.collisions;
+
+//just a proof of concept
+@Component
+abstract class WaterMoveComp implements Posc, Velc, Hitboxc, Flyingc{
+    @Import float x, y;
+
+    @Replace
+    @Override
+    public void move(float cx, float cy){
+        if(isGrounded()){
+            if(!EntityCollisions.waterSolid(tileX(), tileY())){
+                collisions.move(this, cx, cy, EntityCollisions::waterSolid);
+            }
+        }else{
+            x += cx;
+            y += cy;
+        }
+    }
+
+    @Replace
+    @Override
+    public boolean canDrown(){
+        return false;
+    }
+
+    @Replace
+    public float floorSpeedMultiplier(){
+        Floor on = isFlying() ? Blocks.air.asFloor() : floorOn();
+        return on.isDeep() ? 1.3f : 1f;
+    }
+}
+