using Core.Input;
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using TowerDefense.Level;
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using TowerDefense.Towers;
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using TowerDefense.UI.HUD;
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using UnityEngine;
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using UnityInput = UnityEngine.Input;
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using State = TowerDefense.UI.HUD.EndlessGameUI.State;
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namespace TowerDefense.Input
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{
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[RequireComponent(typeof(EndlessGameUI))]
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public class EndlessTowerDefenseKeyboardMouseInput : KeyboardMouseInput
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{
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/// <summary>
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/// Cached eference to gameUI
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/// </summary>
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EndlessGameUI m_GameUI;
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/// <summary>
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/// 是否处于拖动状态。
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/// </summary>
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protected bool isInDragState = false;
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/// <summary>
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/// Register input events
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/// </summary>
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protected override void OnEnable()
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{
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base.OnEnable();
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m_GameUI = GetComponent<EndlessGameUI>();
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if (InputController.instanceExists)
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{
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InputController controller = InputController.instance;
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controller.tapped += OnTap;
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controller.mouseMoved += OnMouseMoved;
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// River Add for Mouse Start Drag & Draged.
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controller.startedDrag += OnStartDrag;
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controller.dragged += this.OnDrag;
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controller.released += this.OnEndDrag;
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}
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}
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/// <summary>
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/// Deregister input events
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/// </summary>
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protected override void OnDisable()
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{
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if (!InputController.instanceExists)
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{
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return;
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}
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InputController controller = InputController.instance;
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controller.tapped -= OnTap;
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controller.mouseMoved -= OnMouseMoved;
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controller.startedDrag -= this.OnStartDrag;
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controller.dragged -= this.OnDrag;
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controller.released -= this.OnEndDrag;
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}
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/// <summary>
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/// Handle camera panning behaviour
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/// </summary>
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protected override void Update()
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{
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base.Update();
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// Escape handling
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if (UnityInput.GetKeyDown(KeyCode.Escape))
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{
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switch (m_GameUI.state)
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{
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case State.Normal:
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if (m_GameUI.isTowerSelected)
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{
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m_GameUI.DeselectTower();
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}
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else
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{
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m_GameUI.Pause();
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}
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break;
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case State.BuildingWithDrag:
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case State.Building:
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m_GameUI.CancelGhostPlacement();
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break;
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}
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}
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// place towers with keyboard numbers
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if (EndlessLevelManager.instanceExists)
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{
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int towerLibraryCount = EndlessLevelManager.instance.TowerLibrary.Count;
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// find the lowest value between 9 (keyboard numbers)
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// and the amount of towers in the library
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int count = Mathf.Min(9, towerLibraryCount);
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KeyCode highestKey = KeyCode.Alpha1 + count;
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for (var key = KeyCode.Alpha1; key < highestKey; key++)
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{
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// add offset for the KeyCode Alpha 1 index to find correct keycodes
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if (UnityInput.GetKeyDown(key))
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{
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Tower controller = EndlessLevelManager.instance.TowerLibrary[key - KeyCode.Alpha1];
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if (EndlessLevelManager.instance.Currency.CanAfford(controller.purchaseCost))
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{
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if (m_GameUI.isBuilding)
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{
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m_GameUI.CancelGhostPlacement();
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}
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EndlessGameUI.instance.SetToBuildMode(controller);
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EndlessGameUI.instance.TryMoveGhost(InputController.instance.basicMouseInfo);
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}
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break;
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}
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}
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// special case for 0 mapping to index 9
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if (count < 10 && UnityInput.GetKeyDown(KeyCode.Alpha0))
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{
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Tower controller = EndlessLevelManager.instance.TowerLibrary[9];
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EndlessGameUI.instance.SetToBuildMode(controller);
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EndlessGameUI.instance.TryMoveGhost(InputController.instance.basicMouseInfo);
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}
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}
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}
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/// <summary>
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/// Ghost follows pointer
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/// </summary>
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void OnMouseMoved(PointerInfo pointer)
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{
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// We only respond to mouse info
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var mouseInfo = pointer as MouseCursorInfo;
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if ((mouseInfo != null) && (m_GameUI.isBuilding))
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{
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m_GameUI.TryMoveGhost(pointer, false);
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}
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}
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protected virtual void OnStartDrag(PointerActionInfo pointer)
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{
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// select towers
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m_GameUI.TrySelectTower(pointer);
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// River: 为了开始拖动后可以直接显示GhostTower
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m_GameUI.TryMoveGhost(pointer, false);
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this.isInDragState = true;
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}
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protected override void OnDrag(PointerActionInfo pointer)
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{
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if ((pointer != null) && (m_GameUI.isBuilding))
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{
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m_GameUI.TryMoveGhost(pointer, false);
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}
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}
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protected void OnEndDrag(PointerActionInfo pointer)
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{
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// EndDrag 只能放置相关的GhostTower.
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if (this.isInDragState)
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m_GameUI.onEndTowerDrag(pointer);
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this.isInDragState = false;
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}
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/// <summary>
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/// Select towers or position ghosts
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/// </summary>
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void OnTap(PointerActionInfo pointer)
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{
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// 不允许点击放置，只能拖拽
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}
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}
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}
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