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simplify two code pieces in record manipulation #1009

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merged 2 commits into from
Oct 10, 2023
Merged

simplify two code pieces in record manipulation #1009

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53f3191
simplify two code pieces in record manipulation
ImpleLee Oct 9, 2023
9d8472d
move 2 functions outside
ImpleLee Oct 9, 2023
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72 changes: 28 additions & 44 deletions parts/data.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -226,6 +226,25 @@ function DATA.pasteQuestArgs(str)
return true
end

local function _encode(t)
if t<128 then return char(t) end
local buffer2=char(t%128)
t=floor(t/128)
while t>=128 do
buffer2=char(128+t%128)..buffer2
t=floor(t/128)
end
return char(128+t)..buffer2
end
local function _decode(str,p)
local ret=0
repeat
local b=byte(str,p)
p=p+1
ret=ret*128+(b<128 and b or b-128)
until b<128
return ret,p
end
--[[
Replay file:
a zlib-compressed json table
Expand All @@ -250,7 +269,7 @@ end
]]
function DATA.dumpRecording(list,ptr)
local out=""
local buffer,buffer2=""
local buffer=""
if not ptr then ptr=1 end
local prevFrm=list[ptr-2] or 0
while list[ptr] do
Expand All @@ -263,31 +282,10 @@ function DATA.dumpRecording(list,ptr)
-- Encode time
local t=list[ptr]-prevFrm
prevFrm=list[ptr]
if t>=128 then
buffer2=char(t%128)
t=floor(t/128)
while t>=128 do
buffer2=char(128+t%128)..buffer2
t=floor(t/128)
end
buffer=buffer..char(128+t)..buffer2
else
buffer=buffer..char(t)
end
buffer=buffer.._encode(t)

-- Encode event
t=list[ptr+1]
if t>=128 then
buffer2=char(t%128)
t=floor(t/128)
while t>=128 do
buffer2=char(128+t%128)..buffer2
t=floor(t/128)
end
buffer=buffer..char(128+t)..buffer2
else
buffer=buffer..char(t)
end
buffer=buffer.._encode(list[ptr+1])

-- Step
ptr=ptr+2
Expand All @@ -299,29 +297,15 @@ function DATA.pumpRecording(str,L)
local p=1

local curFrm=L[#L-1] or 0
local code
while p<=len do
local code,event
-- Read delta time
code=0
local b=byte(str,p)
while b>=128 do
code=code*128+b-128
p=p+1
b=byte(str,p)
end
curFrm=curFrm+code*128+b
L[#L+1]=curFrm
p=p+1
code,p=_decode(str,p)
curFrm=curFrm+code
ins(L,curFrm)

local event=0
b=byte(str,p)
while b>=128 do
event=event*128+b-128
p=p+1
b=byte(str,p)
end
L[#L+1]=event*128+b
p=p+1
event,p=_decode(str,p)
ins(L,event)
end
end
do-- function DATA.saveReplay()
Expand Down