diff --git a/core/src/mindustry/async/CollisionProcess.java b/core/src/mindustry/async/CollisionProcess.java
deleted file mode 100644
index 493d525fa7..0000000000
--- a/core/src/mindustry/async/CollisionProcess.java
+++ /dev/null
@@ -1,190 +0,0 @@
-package mindustry.async;
-
-import arc.math.geom.*;
-import arc.struct.*;
-import arc.util.*;
-import mindustry.entities.*;
-import mindustry.gen.*;
-
-import static mindustry.Vars.*;
-
-//TODO remove
-public class CollisionProcess implements AsyncProcess{
-    //private Physics physics;
-    private QuadTree<Hitboxc> tree;
-    private Array<Hitboxc> insertEntities = new Array<>();
-    private Array<Hitboxc> checkEntities = new Array<>();
-
-    private Array<Hitboxc> arrOut = new Array<>();
-
-    private Vec2 l1 = new Vec2();
-    private Rect r1 = new Rect();
-    private Rect r2 = new Rect();
-    //private Array<CollisionRef> refs = new Array<>(false);
-    //private BodyDef def;
-    //private FixtureDef fdef;
-
-    private EntityGroup<? extends Hitboxc> inserted = Groups.unit;
-    private EntityGroup<? extends Hitboxc> checked = Groups.bullet;
-    private Array<Hitboxc> collisions = new Array<>(Hitboxc.class);
-
-    @Override
-    public void begin(){
-        if(tree == null) return;
-
-        collisions.clear();
-
-        insertEntities.size = 0;
-        checkEntities.size = 0;
-
-        inserted.copy(insertEntities);
-        checked.copy(checkEntities);
-    }
-
-    @Override
-    public void process(){
-        if(tree == null) return;
-
-        collisions.clear();
-
-        Time.mark();
-
-        tree.clear();
-        //insert targets
-        for(Hitboxc ins : insertEntities){
-            tree.insert(ins);
-        }
-
-        for(Hitboxc solid : checked){
-            solid.hitbox(r1);
-            r1.x += (solid.lastX() - solid.getX());
-            r1.y += (solid.lastY() - solid.getY());
-
-            solid.hitbox(r2);
-            r2.merge(r1);
-
-            arrOut.clear();
-            tree.intersect(r2, arrOut);
-
-            for(Hitboxc sc : arrOut){
-                sc.hitbox(r1);
-                if(r2.overlaps(r1)){
-                    checkCollide(solid, sc);
-                    //break out of loop when this object hits something
-                    if(!solid.isAdded()) return;
-                }
-            }
-        }
-
-        Log.info(Time.elapsed());
-    }
-
-    @Override
-    public void end(){
-        if(tree == null) return;
-
-        //processes anything that happened
-        for(int i = 0; i < collisions.size; i += 2){
-            Hitboxc a = collisions.items[i];
-            Hitboxc b = collisions.items[i + 1];
-
-            //TODO incorrect
-            float cx = (a.x() + b.x())/2f, cy = (a.y() + b.y())/2f;
-
-            a.collision(b, cx, cy);
-            b.collision(a, cx, cy);
-        }
-    }
-
-    @Override
-    public void reset(){
-        tree = null;
-        insertEntities.clear();
-        checkEntities.clear();
-    }
-
-    @Override
-    public void init(){
-        reset();
-
-        tree = new QuadTree<>(new Rect(-finalWorldBounds, -finalWorldBounds, world.width() * tilesize + finalWorldBounds * 2, world.height() * tilesize + finalWorldBounds * 2));
-    }
-
-    private void checkCollide(Hitboxc a, Hitboxc b){
-
-        a.hitbox(this.r1);
-        b.hitbox(this.r2);
-
-        r1.x += (a.lastX() - a.getX());
-        r1.y += (a.lastY() - a.getY());
-        r2.x += (b.lastX() - b.getX());
-        r2.y += (b.lastY() - b.getY());
-
-        float vax = a.getX() - a.lastX();
-        float vay = a.getY() - a.lastY();
-        float vbx = b.getX() - b.lastX();
-        float vby = b.getY() - b.lastY();
-
-        if(a != b && a.collides(b)){
-            l1.set(a.getX(), a.getY());
-            boolean collide = r1.overlaps(r2) || collide(r1.x, r1.y, r1.width, r1.height, vax, vay,
-            r2.x, r2.y, r2.width, r2.height, vbx, vby, l1);
-            if(collide){
-                collisions.add(a);
-                collisions.add(b);
-                //a.collision(b, l1.x, l1.y);
-                //b.collision(a, l1.x, l1.y);
-            }
-        }
-    }
-
-    private boolean collide(float x1, float y1, float w1, float h1, float vx1, float vy1,
-                            float x2, float y2, float w2, float h2, float vx2, float vy2, Vec2 out){
-        float px = vx1, py = vy1;
-
-        vx1 -= vx2;
-        vy1 -= vy2;
-
-        float xInvEntry, yInvEntry;
-        float xInvExit, yInvExit;
-
-        if(vx1 > 0.0f){
-            xInvEntry = x2 - (x1 + w1);
-            xInvExit = (x2 + w2) - x1;
-        }else{
-            xInvEntry = (x2 + w2) - x1;
-            xInvExit = x2 - (x1 + w1);
-        }
-
-        if(vy1 > 0.0f){
-            yInvEntry = y2 - (y1 + h1);
-            yInvExit = (y2 + h2) - y1;
-        }else{
-            yInvEntry = (y2 + h2) - y1;
-            yInvExit = y2 - (y1 + h1);
-        }
-
-        float xEntry, yEntry;
-        float xExit, yExit;
-
-        xEntry = xInvEntry / vx1;
-        xExit = xInvExit / vx1;
-
-        yEntry = yInvEntry / vy1;
-        yExit = yInvExit / vy1;
-
-        float entryTime = Math.max(xEntry, yEntry);
-        float exitTime = Math.min(xExit, yExit);
-
-        if(entryTime > exitTime || xExit < 0.0f || yExit < 0.0f || xEntry > 1.0f || yEntry > 1.0f){
-            return false;
-        }else{
-            float dx = x1 + w1 / 2f + px * entryTime;
-            float dy = y1 + h1 / 2f + py * entryTime;
-
-            out.set(dx, dy);
-
-            return true;
-        }
-    }
-}