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

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+package mindustry.entities.comp;
+
+import arc.math.geom.*;
+import mindustry.ai.*;
+import mindustry.annotations.Annotations.*;
+import mindustry.content.*;
+import mindustry.entities.*;
+import mindustry.entities.EntityCollisions.*;
+import mindustry.gen.*;
+import mindustry.type.*;
+import mindustry.world.blocks.environment.*;
+
+//TODO
+@Component
+abstract class CrawlComp implements Posc, Rotc, Hitboxc, Unitc{
+    @Import float x, y, speedMultiplier;
+    @Import UnitType type;
+    @Import Vec2 vel;
+
+    //TODO segments
+    float segmentRot;
+    float crawlTime;
+
+    @Replace
+    @Override
+    public SolidPred solidity(){
+        return EntityCollisions::legsSolid;
+    }
+
+    @Override
+    @Replace
+    public int pathType(){
+        return Pathfinder.costLegs;
+    }
+
+    @Override
+    @Replace
+    public float floorSpeedMultiplier(){
+        Floor on = isFlying() ? Blocks.air.asFloor() : floorOn();
+        //TODO take into account extra blocks
+        return on.speedMultiplier * speedMultiplier;
+    }
+
+    @Override
+    public void update(){
+        crawlTime += vel.len();
+    }
+}