69 lines
2.2 KiB
Lua
69 lines
2.2 KiB
Lua
local Animation = {}
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local ERoleState = import("EBusyRoleState")
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local ERoleMoveDirection = import("ERoleMoveDirection")
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local Reactive = require("Core.Reactive")
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local direction_mapping = {
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[0] = ERoleMoveDirection.Move_Right,
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[1] = ERoleMoveDirection.Move_Left,
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}
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local function GetAnimationIndex(direction, N)
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-- 使用自定义 atan2 计算角度
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local angle = math.atan(direction.Y, direction.X)
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-- 转换为 [0, 2π) 范围
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if angle < 0 then angle = angle + 2 * math.pi end
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-- 调整角度：使 Y 轴负方向 (0,-1) 成为 0°（第一份的中心）
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local adjusted_angle = (angle + math.pi / N) % (2 * math.pi)
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-- local adjusted_angle = (angle + math.pi / 2 + math.pi / N) % (2 * math.pi)
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-- 计算每份的角度大小
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local theta = 2 * math.pi / N
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-- -- 计算所属区间的索引（1-based）
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local index = math.floor(adjusted_angle / theta)
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-- 处理边界情况（adjusted_angle = 2π 时归到第 1 份）
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if index > N then index = 0 end
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return index
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end
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function Animation:ReceiveLuaBeginPlay()
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self.prev_direction = nil
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self.watcher = Reactive.Watcher(function() self:UpdateMoveAnimation() end)
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end
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function Animation:UpdateMoveAnimation()
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local owner = self:GetOwner()
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local movement_proxy = owner.Movement.proxy
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local index = 0
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if owner.proxy.state == ERoleState.Picking then
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return
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end
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if movement_proxy.isIdle then
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if self.prev_direction ~= nil then
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index = GetAnimationIndex(self.prev_direction, ERoleMoveDirection.Move_All_Cnt)
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end
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self:SetIdleAnimation(direction_mapping[index])
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else
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local direction = movement_proxy.direction
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if direction.X ~= 0 and direction.Y ~= 0 then
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index = GetAnimationIndex(direction, ERoleMoveDirection.Move_All_Cnt)
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end
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self:SetMoveAnimation(direction_mapping[index])
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self.prev_direction = {X = direction.X, Y = direction.Y}
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end
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end
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function Animation:GetMoveDirection()
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local index = GetAnimationIndex(self.prev_direction, ERoleMoveDirection.Move_All_Cnt)
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return direction_mapping[index]
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end
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return Class(nil, nil, Animation)
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