以购买枪店为例，sl如果赋值为2，就代表购买两个。sl赋值为8，就代表买8个。前提是地图里有那么多。位置是随机的。如果想选择近的，就需要增加一个测量距离的功能。用枪店的bx，by坐标和安全屋的坐标进行比较，求出最短的距离。舍弃距离远的坐标。

tARMSDEALERs = findBusinessesInRadius("ARMSDEALER",soldierstart_x, soldierstart_y,999999999)
local ARMSDEALER=nil
local sl=1
local ARMSDEALERindex=nil
local dist=999999999
for index, value in tARMSDEALERs do
bx, by = building.buildingtoworld(value,5,5)
ARMSDEALER=value
ARMSDEALERindex=index
if 19<index and index<sl+20 then
buildingcmd.buildingbuy(ARMSDEALER,player)
end
--mm.cprint(index)
end
tRESTAURANTs = findBusinessesInRadius("RESTAURANT",soldierstart_x, soldierstart_y,999999999)
local RESTAURANT=nil
local sl=1
local RESTAURANTindex=nil
local dist=999999999
for index, value in tRESTAURANTs do
bx, by = building.buildingtoworld(value,5,5)
RESTAURANT=value
RESTAURANTindex=index
if 16<index and index<sl+17 then
buildingcmd.buildingbuy(RESTAURANT,player)
end
--mm.cprint(index)
end
tResidentials = findBusinessesInRadius("RESIDENTIAL",soldierstart_x, soldierstart_y,999999999)
local residential=nil
local residentialindex=nil
local sl=2
for index,value in tResidentials do
bx, by = building.buildingtoworld(value,5,5)
residential=value
residentialindex=index
--mm.cprint(index)
if 5<index and index<sl+6 then
buildingcmd.buildingbuy(residential,player)
start_x, start_y = building.buildingtoworld(residential,5,5)
soldier={}
for i=0,3 do
soldier[i] = world.activatecharacter("HENCHMAN")
family.addsoldier(player, soldier[i])
charactercmd.setposition(soldier[i], start_x, start_y)
charactercmd.fortify(player, soldier[i], residential)
end
end
end