Naval unit tweaks

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

@@ -1,17 +1,54 @@
 package mindustry.entities.comp;
 
+import arc.graphics.*;
+import arc.graphics.g2d.*;
+import arc.math.*;
+import arc.util.*;
 import mindustry.annotations.Annotations.*;
 import mindustry.content.*;
 import mindustry.entities.*;
 import mindustry.gen.*;
+import mindustry.graphics.*;
+import mindustry.type.*;
 import mindustry.world.blocks.environment.*;
 
-import static mindustry.Vars.collisions;
+import static mindustry.Vars.*;
 
 //just a proof of concept
 @Component
-abstract class WaterMoveComp implements Posc, Velc, Hitboxc, Flyingc{
-    @Import float x, y;
+abstract class WaterMoveComp implements Posc, Velc, Hitboxc, Flyingc, Unitc{
+    @Import float x, y, rotation;
+    @Import UnitType type;
+
+    private transient Trail tleft = new Trail(1), tright = new Trail(1);
+    private transient Color trailColor = Blocks.water.mapColor.cpy().mul(1.5f);
+
+    @Override
+    public void update(){
+        for(int i = 0; i < 2; i++){
+            Trail t = i == 0 ? tleft : tright;
+            t.length = type.trailLength;
+
+            int sign = i == 0 ? -1 : 1;
+            float cx = Angles.trnsx(rotation - 90, type.trailX * sign, type.trailY) + x, cy = Angles.trnsy(rotation - 90, type.trailX * sign, type.trailY) + y;
+            t.update(cx, cy);
+        }
+    }
+
+    public void draw(){
+        float z = Draw.z();
+
+        Draw.z(Layer.debris);
+
+        Floor floor = floorOn();
+        Color color = Tmp.c1.set(floor.mapColor).mul(1.7f);
+        trailColor.lerp(color, Mathf.clamp(Time.delta() * 0.04f));
+
+        tleft.draw(trailColor, type.trailScl);
+        tright.draw(trailColor, type.trailScl);
+
+        Draw.z(z);
+    }
 
     @Replace
     @Override