Implemented desktop carrying

core/src/io/anuke/mindustry/entities/Player.java

@@ -32,10 +32,7 @@ import io.anuke.ucore.entities.EntityGroup;
 import io.anuke.ucore.entities.trait.SolidTrait;
 import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.graphics.Lines;
-import io.anuke.ucore.util.Angles;
+import io.anuke.ucore.util.*;
-import io.anuke.ucore.util.Mathf;
-import io.anuke.ucore.util.ThreadQueue;
-import io.anuke.ucore.util.Timer;
 
 import java.io.DataInput;
 import java.io.DataOutput;
@@ -448,13 +445,26 @@ public class Player extends Unit implements BuilderTrait, CarryTrait {
 		if(mech.flying){
 			//prevent strafing backwards, have a penalty for doing so
 			float angDist = Angles.angleDist(rotation, velocity.angle()) / 180f;
-			float penalty = 0.2f;
+			float penalty = 0.2f; //when going 180 degrees backwards, reduce speed to 0.2x
 			speed *= Mathf.lerp(1f, penalty, angDist);
 		}
 
 		//drop from carrier on key press
-		if(Inputs.keyTap("drop_unit") && getCarrier() != null){
+		if(Inputs.keyTap("drop_unit")){
-			getCarrier().dropCarry();
+			if(!mech.flying) {
+				if (getCarrier() != null) {
+					CallEntity.dropSelf(this);
+				}
+			}else if(getCarry() != null){
+				dropCarry();
+			}else{
+				Unit unit = Units.getClosest(team, x, y, 8f,
+						u -> !u.isFlying() && u.getMass() <= mech.carryWeight);
+
+				if(unit != null){
+					carry(unit);
+				}
+			}
 		}
 
 		movement.set(0, 0);

core/src/io/anuke/mindustry/entities/traits/CarryTrait.java

@@ -32,6 +32,13 @@ public interface CarryTrait extends TeamTrait, SolidTrait, TargetTrait{
         CallEntity.setCarryOf(this instanceof Player ? (Player)this : null, this, unit);
     }
 
+    @Remote(called = Loc.server, targets = Loc.both, forward = true, in = In.entities)
+    static void dropSelf(Player player){
+        if(player.getCarrier() != null){
+            player.getCarrier().dropCarry();
+        }
+    }
+
     @Remote(called = Loc.server, targets = Loc.both, forward = true, in = In.entities)
     static void setCarryOf(Player player, CarryTrait trait, CarriableTrait unit){
         if(player != null){ //when a server recieves this called from a player, set the carrier to the player.

core/src/io/anuke/mindustry/input/AndroidInput.java

@@ -509,7 +509,7 @@ public class AndroidInput extends InputHandler implements GestureListener{
             if(player.getCarry() != null){
                 player.dropCarry(); //drop off unit
             }else{
-                Unit unit = Units.getClosest(player.getTeam(), Graphics.world(x, y).x, Graphics.world(x, y).y, 4f, u -> !u.isFlying());
+                Unit unit = Units.getClosest(player.getTeam(), Graphics.world(x, y).x, Graphics.world(x, y).y, 4f, u -> !u.isFlying() && u.getMass() <= player.mech.carryWeight);
 
                 if(unit != null){
                     player.pickupTarget = unit;

core/src/io/anuke/mindustry/type/Mech.java

@@ -14,7 +14,7 @@ public class Mech extends Upgrade {
 	public float armor = 1f;
 
 	public int drillPower = -1;
-	public float carryWeight = 1f;
+	public float carryWeight = 10f;
 	public float buildPower = 1f;
 	public boolean canRepair = false;