Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
127 lines
5.2 KiB
Lua
127 lines
5.2 KiB
Lua
----------------------------------------------------------------------------------------------------
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--
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-- Copyright (c) Contributors to the Open 3D Engine Project.
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-- For complete copyright and license terms please see the LICENSE at the root of this distribution.
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--
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-- SPDX-License-Identifier: Apache-2.0 OR MIT
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--
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--
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--
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----------------------------------------------------------------------------------------------------
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local DropTargetStacking =
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{
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Properties =
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{
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},
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}
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function DropTargetStacking:IsValidDrop(draggable, dropTarget)
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local sourceDraggableImage = UiElementBus.Event.GetChild(draggable, 0)
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local sourceType = UiImageBus.Event.GetSpritePathname(sourceDraggableImage)
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local destType = ""
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if (UiElementBus.Event.GetNumChildElements(dropTarget) > 0) then
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local destDraggable = UiElementBus.Event.GetChild(dropTarget, 0)
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local destDraggableImage = UiElementBus.Event.GetChild(destDraggable, 0)
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destType = UiImageBus.Event.GetSpritePathname(destDraggableImage)
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end
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if (destType == "" or sourceType == destType) then
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return true
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else
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return false
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end
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end
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function DropTargetStacking:OnActivate()
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self.dropTargetHandler = UiDropTargetNotificationBus.Connect(self, self.entityId)
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end
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function DropTargetStacking:OnDeactivate()
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self.dropTargetHandler:Disconnect()
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end
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function DropTargetStacking:OnDropHoverStart(draggable)
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if (self:IsValidDrop(draggable, self.entityId)) then
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UiDraggableBus.Event.SetDragState(draggable, eUiDragState_Valid)
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UiDropTargetBus.Event.SetDropState(self.entityId, eUiDropState_Valid)
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else
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UiDraggableBus.Event.SetDragState(draggable, eUiDragState_Invalid)
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UiDropTargetBus.Event.SetDropState(self.entityId, eUiDropState_Invalid)
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end
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end
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function DropTargetStacking:OnDropHoverEnd(draggable)
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UiDraggableBus.Event.SetDragState(draggable, eUiDragState_Normal)
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UiDropTargetBus.Event.SetDropState(self.entityId, eUiDropState_Normal)
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end
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function DropTargetStacking:OnDrop(draggable)
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if (not self:IsValidDrop(draggable, self.entityId)) then
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return
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end
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-- get the source inventory count
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local sourceInventoryCount = 0
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local draggableImage = UiElementBus.Event.GetChild(draggable, 0)
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local draggableCounterBox = UiElementBus.Event.GetChild(draggableImage, 0)
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local draggableCounterText = UiElementBus.Event.GetChild(draggableCounterBox, 0)
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local textString = UiTextBus.Event.GetText(draggableCounterText)
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sourceInventoryCount = tonumber(textString)
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-- get the dest inventory count
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local destInventoryCount = 0
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local destChildCount = UiElementBus.Event.GetNumChildElements(self.entityId)
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local destDraggable = EntityId()
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local destDraggableCounterText = EntityId()
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local destTextString = ""
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if (destChildCount > 0) then
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destDraggable = UiElementBus.Event.GetChild(self.entityId, 0)
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if (destDraggable == draggable) then
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-- draggable was dropped on its original (current) slot - do nothing
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return
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end
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local destDraggableImage = UiElementBus.Event.GetChild(destDraggable, 0)
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local destDraggableCounterBox = UiElementBus.Event.GetChild(destDraggableImage, 0)
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destDraggableCounterText = UiElementBus.Event.GetChild(destDraggableCounterBox, 0)
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destTextString = UiTextBus.Event.GetText(destDraggableCounterText)
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destInventoryCount = tonumber(destTextString)
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end
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if (destInventoryCount == 0 and sourceInventoryCount == 1) then
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UiElementBus.Event.Reparent(draggable, self.entityId, EntityId())
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else
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if (destInventoryCount == 0) then
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local canvasEntity = UiElementBus.Event.GetCanvas(self.entityId)
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local clonedElement = UiCanvasBus.Event.CloneElement(canvasEntity, draggable, self.entityId, EntityId())
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-- set the count on the cloned element to one
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local clonedImage = UiElementBus.Event.GetChild(clonedElement, 0)
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local clonedCounterBox = UiElementBus.Event.GetChild(clonedImage, 0)
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local clonedCounterText = UiElementBus.Event.GetChild(clonedCounterBox, 0)
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UiTextBus.Event.SetText(clonedCounterText, "1")
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-- if using keyboard/gamepad make the we want to make sure the hover moves
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UiCanvasBus.Event.ForceHoverInteractable(canvasEntity, clonedElement)
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else
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-- increment dest
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destInventoryCount = destInventoryCount + 1
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destTextString = destInventoryCount
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UiTextBus.Event.SetText(destDraggableCounterText, destTextString)
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-- if using keyboard/gamepad make the we want to make sure the hover moves
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local canvasEntity = UiElementBus.Event.GetCanvas(self.entityId)
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UiCanvasBus.Event.ForceHoverInteractable(canvasEntity, destDraggable)
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end
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if (sourceInventoryCount == 1) then
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UiElementBus.Event.DestroyElement(draggable)
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else
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-- decrement source
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sourceInventoryCount = sourceInventoryCount - 1
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textString = sourceInventoryCount
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UiTextBus.Event.SetText(draggableCounterText, textString)
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end
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end
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end
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return DropTargetStacking
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