通过GAS实现狐狸的技能，还差碰撞、参数配置化、消耗和冷却

Content/Lua/Gas/Ability/Role/Fox/FoxUltimate.lua

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+local GameplayStatics = import("GameplayStatics")
+local AbilitySystemBlueprintLibrary = import("AbilitySystemBlueprintLibrary")
+local BusyGameplayLibrary = import("BusyGameplayLibrary")
+
+--- @class FoxUltimate
+--- @field RecastWindow number
+local FoxUltimate = {}
+
+
+function FoxUltimate:ctor()
+    self.ultimate_phase = 1  -- 大招阶段
+    self.active_recast_handle = nil
+    self.active_accelerate_handle = nil
+end
+
+
+function FoxUltimate:K2_ActivateAbilityFromEvent(EventData)
+    print("FoxUltimate:K2_ActivateAbilityFromEvent", self.ultimate_phase)
+
+    local owner = self:GetOwningActorFromActorInfo()
+    self.movement =  owner.MovementComponent
+    self.animation = owner.SpineAnimationComponent
+    self.asc = AbilitySystemBlueprintLibrary.GetAbilitySystemComponent(owner)
+    self.recast_tag = BusyGameplayLibrary.RequestGameplayTag("Ability.Flags.Recast")
+
+    local asc = self.asc
+
+    if self.ultimate_phase == 1 or asc:HasMatchingGameplayTag(self.recast_tag) then
+        print("triggered")
+        self:TriggerUltimate(asc)
+    else
+        self:K2_EndAbility()
+    end
+
+
+end
+
+function FoxUltimate:TriggerUltimate(asc)
+    if self.ultimate_phase == 1 then
+        -- 第一次释放大招，添加一个可以再次释放的Tag
+        local _, recast_effect = self:GetAbilityEffectSpecHandle("Recast", asc, 1, nil)
+        self.active_recast_handle = asc:BP_ApplyGameplayEffectSpecToSelf(recast_effect)
+    elseif self.ultimate_phase == 2 then
+        -- 第二次激活，移除可重复释放的tag
+        self.asc:RemoveActiveGameplayEffect(self.active_recast_handle, -1)
+        local _, recast_effect = self:GetAbilityEffectSpecHandle("Recast", asc, 1, nil)
+        self.active_recast_handle = asc:BP_ApplyGameplayEffectSpecToSelf(recast_effect)
+    elseif self.ultimate_phase == 3 then
+        self.asc:RemoveActiveGameplayEffect(self.active_recast_handle, -1)
+    end
+
+    -- 播放动画，并监听动画完成的事件
+    self:PlayAnimation()
+end
+
+
+function FoxUltimate:GetAnimationName(direction)
+    local animation_name_prefix
+    if direction.X >= 0 then
+        animation_name_prefix = "Ultimate/Right/"
+    else
+        animation_name_prefix = "Ultimate/Left/"
+    end
+
+    if self.ultimate_phase == 1 then
+        return animation_name_prefix .. "UltimateStage1"
+    elseif self.ultimate_phase == 2 then
+        return animation_name_prefix .. "UltimateStage2"
+    elseif self.ultimate_phase == 3 then
+        return animation_name_prefix .. "UltimateStage3"
+    end
+    return nil
+end
+
+
+function FoxUltimate:K2_OnEndAbility(bWasCancelled)
+    print("FoxUltimate:K2_OnEndAbility")
+end
+
+
+function FoxUltimate:GetSprintSpeedFactor()
+    if self.ultimate_phase == 1 then
+        return 2.5
+    elseif self.ultimate_phase == 2 then
+        return 2.8
+    elseif self.ultimate_phase == 3 then
+        return 3.0
+    end
+end
+
+function FoxUltimate:PlayAnimation()
+
+    local animation = self.animation
+    local PC = GameplayStatics.GetPlayerController(self, 0)
+
+    local result, ability_direction = PC:GetCursorDirection(nil)  -- 获取技能的朝向
+    if not result then
+        print("FoxUltimate:TriggerPrimaryPhase can't find direction")
+        return
+    end
+    local anim_name = self:GetAnimationName(ability_direction)  -- 获取技能动画名称
+    if not anim_name then
+        print("FoxUltimate:TriggerPrimaryPhase can't get animation", self.ultimate_phase)
+        return
+    end
+
+    local anim_entry = animation:SetAnimation(0, anim_name, false)
+    anim_entry.AnimationComplete:Add(function(entry) self:OnAnimationComplete(entry) end)
+    anim_entry.AnimationEvent:Add(function(entry, event) self:OnAnimationEvent(entry, event) end)
+
+    local anim_total_time = anim_entry:GetAnimationEnd()  -- 获取技能动画时长
+
+    -- 附加加速buff
+    self:MakeAccelerate(self:GetSprintSpeedFactor(), anim_total_time)
+    self.movement:ActivateSprint(ability_direction, anim_total_time)
+end
+
+
+function FoxUltimate:MakeAccelerate(speed_factor, total_time)
+    local _, accelerate_effect = self:GetAbilityEffectSpecHandle("Accelerate", self.asc, 1, nil)
+    AbilitySystemBlueprintLibrary.AssignTagSetByCallerMagnitude(
+        accelerate_effect,
+        BusyGameplayLibrary.RequestGameplayTag("Effect.Factor"),
+        speed_factor
+    )
+
+    AbilitySystemBlueprintLibrary.AssignTagSetByCallerMagnitude(
+        accelerate_effect,
+        BusyGameplayLibrary.RequestGameplayTag("Effect.Duration"),
+        total_time
+    )
+    return self.asc:BP_ApplyGameplayEffectSpecToSelf(accelerate_effect)
+end
+
+
+function FoxUltimate:OnAnimationComplete(entry)
+    self.ultimate_phase = self.ultimate_phase + 1
+    entry.AnimationComplete:Clear()
+    entry.AnimationEvent:Clear()
+    self:K2_EndAbility()
+end
+
+function FoxUltimate:OnAnimationEvent(entry, event)
+    if event.Name == "OnSpeedChange" then
+        self.active_accelerate_handle = self:MakeAccelerate(8.0, 0.5)
+    elseif event.Name == "OnSpeedReset" then
+        self.asc:RemoveActiveGameplayEffect(self.active_accelerate_handle, -1)
+    end
+end
+
+
+
+return Class(nil, nil, FoxUltimate)