Fix item filters being ignored

src/js/game/belt_path.js

@@ -1009,25 +1009,8 @@ export class BeltPath extends BasicSerializableObject {
         // Check if we have an item which is ready to be emitted
         const lastItem = this.items[this.items.length - 1];
         if (lastItem && lastItem[_nextDistance] === 0 && this.acceptorTarget) {
-            // Pass over the item
-            if (
-                this.root.systemMgr.systems.itemEjector.tryPassOverItem(
-                    lastItem[_item],
-                    this.acceptorTarget.entity,
-                    this.acceptorTarget.slot
-                )
-            ) {
+            if (this.tryHandOverItem(lastItem[_item])) {
                 this.items.pop();
-
-                // Also trigger animation
-                const targetAcceptorComp = this.acceptorTarget.entity.components.ItemAcceptor;
-                if (targetAcceptorComp) {
-                    targetAcceptorComp.onItemAccepted(
-                        this.acceptorTarget.slot,
-                        this.acceptorTarget.direction,
-                        lastItem[_item]
-                    );
-                }
             }
         }
 
@@ -1036,6 +1019,47 @@ export class BeltPath extends BasicSerializableObject {
         }
     }
 
+    /**
+     * Tries to hand over the item to the end entity
+     * @param {BaseItem} item
+     */
+    tryHandOverItem(item) {
+        if (!this.acceptorTarget) {
+            return;
+        }
+
+        const targetAcceptorComp = this.acceptorTarget.entity.components.ItemAcceptor;
+
+        // Check if the acceptor has a filter for example
+        if (targetAcceptorComp && !targetAcceptorComp.canAcceptItem(this.acceptorTarget.slot, item)) {
+            // Well, this item is not accepted
+            return false;
+        }
+
+        // Try to pass over
+        if (
+            this.root.systemMgr.systems.itemEjector.tryPassOverItem(
+                item,
+                this.acceptorTarget.entity,
+                this.acceptorTarget.slot
+            )
+        ) {
+            // Trigger animation on the acceptor comp
+            const targetAcceptorComp = this.acceptorTarget.entity.components.ItemAcceptor;
+            if (targetAcceptorComp) {
+                targetAcceptorComp.onItemAccepted(
+                    this.acceptorTarget.slot,
+                    this.acceptorTarget.direction,
+                    item
+                );
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * Computes a world space position from the given progress
      * @param {number} progress

src/js/game/components/belt.js

@@ -2,8 +2,6 @@ import { enumDirection, Vector } from "../../core/vector";
 import { types } from "../../savegame/serialization";
 import { BeltPath } from "../belt_path";
 import { Component } from "../component";
-import { Entity } from "../entity";
-import { enumLayer } from "../root";
 
 export const curvedBeltLength = /* Math.PI / 4 */ 0.78;
 
@@ -43,7 +41,6 @@ export class BeltComponent extends Component {
     }
 
     static getSchema() {
-        // The followUpCache field is not serialized.
         return {
             direction: types.string,
         };
@@ -63,9 +60,6 @@ export class BeltComponent extends Component {
 
         this.direction = direction;
 
-        /** @type {Entity} */
-        this.followUpCache = null;
-
         /**
          * The path this belt is contained in, not serialized
          * @type {BeltPath}

src/js/game/components/hub.js

@@ -1,6 +1,4 @@
 import { Component } from "../component";
-import { ShapeDefinition } from "../shape_definition";
-import { types } from "../../savegame/serialization";
 
 export class HubComponent extends Component {
     static getId() {

src/js/game/components/item_acceptor.js

@@ -2,7 +2,6 @@ import { enumDirection, enumInvertedDirections, Vector } from "../../core/vector
 import { types } from "../../savegame/serialization";
 import { BaseItem, enumItemType } from "../base_item";
 import { Component } from "../component";
-import { enumLayer } from "../root";
 
 /** @typedef {{
  * pos: Vector,

src/js/game/systems/item_processor.js

@@ -347,8 +347,8 @@ export class ItemProcessorSystem extends GameSystemWithFilter {
                 assert(hubComponent, "Hub item processor has no hub component");
 
                 for (let i = 0; i < items.length; ++i) {
-                    const shapeItem = /** @type {ShapeItem} */ (items[i].item);
-                    this.root.hubGoals.handleDefinitionDelivered(shapeItem.definition);
+                    const item = /** @type {ShapeItem} */ (items[i].item);
+                    this.root.hubGoals.handleDefinitionDelivered(item.definition);
                 }
 
                 break;