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+--- Forum: Script Help (/Forum-Script-Help)
+--- Thread: Eval & Expressions (/Thread-Eval-Expressions)
Eval & Expressions - Pestilence - 01-08-2015 02:12 PM
Hey All. :)
Version: 08-01-2015 nightly linux debug
As permanently checking changelog. And people in irc says "every line is evaluated"
Can somebody confirm this ridiculous behaviour:
Code:
[function f_learn]
local.x 1
local.y 10
local.x += 1
local.y -= 5
sysmessage "<dlocal.x> <dlocal.y>" // Returns: "2 5"
local.x 1
local.y 10
local.x+=1
local.y-=5
sysmessage "<dlocal.x> <dlocal.y>" // Returns "1 10"
local.x 1
local.y 10
sysmessage <dlocal.x>+<dlocal.y> // Returns "1+10"
local.x 1
local.y 10
sysmessage <dlocal.x> + <dlocal.y> // Returns "1 + 10"Just paste it in your sphere and run .f_learn
Looks like trusting and NOT using "eval" in expressions is totally biggest fault for scripting :D
IMHO:
Example #4 shouldn't work because there are spaces...
Example #3 SHOULD work because there are NO spaces and NO quotes
But most killing thing... #2 & #1... now I'm totally unsure can i really use "newgold -= 5000" or "newgold-=5000"
Update:
Code:
[function f_learn]
gold 1000
sysmessage "1000 -> <gold>" // 1000 -> 1000 (works)
gold += 1000
sysmessage "2000 -> <gold>" // 2000 -> 2000 (works)
gold+=1000
sysmessage "3000 -> <gold>" // 3000 -> 1000 (broken)
gold -= 1000
sysmessage "2000 -> <gold>" // 2000 -> 0 (works)
gold-=1000
sysmessage "1000 -> <gold>" // 1000 -> 1000 (broken)RE: Eval & Expressions - eberk - 01-08-2015 07:15 PM
local.x+=XXXX without space to equal symbol ( = ) i think sphere read it like "YYYY=XXXX" means YYYY for 'local.x+' and XXXX is value, so in your example can u check (for example #2)
Code:
local.x 1
local.y 10
local.x+=1
local.y-=5
sysmessage "<dlocal.x> <dlocal.y> <dlocal.x+> <dlocal.y->" //Now it should Returns "1 10 1 5"and sysmessage command (#3,#4) i think it want string value so actually you have to do it like
Code:
local.x 1
local.y 10
local.temp = <dlocal.x>+<dlocal.y>
sysmessage <dlocal.temp>RE: Eval & Expressions - Extreme - 01-09-2015 11:41 AM
Just use eval everywhere..
100% sure it will work
RE: Eval & Expressions - Pestilence - 01-09-2015 12:38 PM
(01-09-2015 11:41 AM)Extreme Wrote: Just use eval everywhere..
100% sure it will work
That's what I really started doing
RE: Eval & Expressions - XuN - 01-11-2015 02:01 AM
I'm not sure if I did understand this but this is my contribution:
- You should use local.bla += x and NOT local.bla+=x
- Values are stored in hex, so it doesnt matter if you use local.bla = <eval 8+2> and local.ble = <dlocal.bla> because they will be stored as '0a' anyways, so using evals to storage is a waste of cpu.
- Numerical strings SHOULD be eval'ed to output them
RE: Eval & Expressions - Pestilence - 01-11-2015 03:37 PM
Xun, My question was related only to #1
but having stuff like "attr=010" and then you see "color += 01", slightly messing, isn't?