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BlockPickerSystem.java
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/
BlockPickerSystem.java
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/*
* Copyright 2014 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.blockPicker.systems;
import org.terasology.blockPicker.components.BlockPickerComponent;
import org.terasology.engine.entitySystem.entity.EntityManager;
import org.terasology.engine.entitySystem.entity.EntityRef;
import org.terasology.engine.entitySystem.systems.BaseComponentSystem;
import org.terasology.engine.entitySystem.systems.RegisterSystem;
import org.terasology.engine.logic.inventory.ItemComponent;
import org.terasology.engine.registry.In;
import org.terasology.gestalt.entitysystem.event.ReceiveEvent;
import org.terasology.module.inventory.components.InventoryComponent;
import org.terasology.module.inventory.events.InventorySlotChangedEvent;
import org.terasology.module.inventory.events.InventorySlotStackSizeChangedEvent;
import org.terasology.module.inventory.systems.InventoryManager;
@RegisterSystem
public class BlockPickerSystem extends BaseComponentSystem {
@In
EntityManager entityManager;
@In
InventoryManager inventoryManager;
@ReceiveEvent(components = BlockPickerComponent.class)
public void onBlockPickerItemsChanged(InventorySlotChangedEvent event, EntityRef entity) {
// forcibly destroy the items being swapped with a copy of what was already there
// this makes it look like the original items were never touched
EntityRef duplicatedOldItem = event.getOldItem().copy();
InventoryComponent inventoryComponent = entity.getComponent(InventoryComponent.class);
inventoryComponent.itemSlots.set(event.getSlot(), duplicatedOldItem);
event.getNewItem().destroy();
}
@ReceiveEvent(components = BlockPickerComponent.class)
public void onBlockPickerItemsChanged(InventorySlotStackSizeChangedEvent event, EntityRef entity) {
// fill up the stack back to the maximum amount of items
EntityRef item = inventoryManager.getItemInSlot(entity, event.getSlot());
ItemComponent itemComponent = item.getComponent(ItemComponent.class);
itemComponent.stackCount = itemComponent.maxStackSize;
item.saveComponent(itemComponent);
}
}