zhandouxiaojiji / behavior3lua Goto Github PK

--移动到目标位置
--input vec3 targetPos
local bret = require "Framework/Behavior3Lua/behavior_ret"
local AStarHelper = require("Common/AStarHelper")

local abs     = math.abs
local SPEED = 10

return function (node,targetPos)
    
    local env = node.env
    local owner = env.owner
    local args = node.args
    local vec3Start = owner.isoObjCmp.position
    local vec3End = targetPos

    if(abs(vec3Start.x - vec3End.x) < 0.01 and abs(vec3Start.y - vec3End.y) < 0.01) then
        --已经在目的地了
        return bret.SUCCESS
    end

    local pathList = node:get_var("PATH")
    if pathList == nil then
        --这里查找路径点
        local pathList = AStarHelper.FindPath(owner.tileMap,owner.isoWorldCmp,vec3Start,vec3End)

        if(table.length(pathList) == 0) then
            --没有路径
            node:set_var("PATH", nil)
            return bret.SUCCESS
        end

        node:set_var("PATH", pathList)                                   --记录全部路径列表
        node:set_var("INDEX", 0)                                             --记录当前在路径列表的那个下标
        node:set_var("COUNT",table.length(pathList))          --记录总的路径列表长度
        node:set_var("STEP_START_POS",pathList[0])          --记录当前路径的起点
        node:set_var("STEP_SRAT_TIME",Time.time)              --记录当前路径的起始时间

        local dis = Vector3.Distance(vec3Start,pathList[0])
        node:set_var("TOTAL_TIME", dis / SPEED)                 --记录当前路径移动的总时间
    end
    
    pathList = node:get_var("PATH")
    local index = node:get_var("INDEX")
    local count = node:get_var("COUNT")
    local step_start_pos = node:get_var("STEP_START_POS")
    local step_start_time = node:get_var("STEP_SRAT_TIME")
    local TotalTime = node:get_var("TOTAL_TIME")

    local target = pathList[index]

    --到达一个目标点，就切换到下一个点
    if(abs(owner.isoObjCmp.position.x - target.x) < 0.01 and abs(owner.isoObjCmp.position.y - target.y) < 0.01) then
        --print("move cur point reach target")
        local index = node:get_var("INDEX")
        if index == count then
            node:set_var("PATH", nil)
            return bret.SUCCESS
        else
            local current = pathList[index]
            index = index + 1
            target = pathList[index]
            local dis = Vector3.Distance(current,target)
            local totalTime = dis / SPEED

            node:set_var("INDEX", index)
            node:set_var("TOTAL_TIME", totalTime)
            node:set_var("STEP_SRAT_TIME",Time.time)
            node:set_var("STEP_START_POS",current)
            owner.spineCmp:SetFace(target - owner.isoObjCmp.position)
            owner.spineCmp:Play("move",true)
            return bret.RUNNING
        end
    end

    owner.isoObjCmp.position = Vector3.Lerp(step_start_pos,target,(Time.time - step_start_time) / TotalTime)

    return bret.RUNNING
end

for i = last_idx, #node.children do
    local child = node.children[i]
    local r = child:run(env)
    if r == bret.RUNNING then
        return node:yield(env, i)
    end
    if r == bret.FAIL then
        return r
    end
end
return bret.SUCCESS