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Dear all,
I'm experiencing a strange phenomenon in my MindScript program which I
believe to be a bug, where within a task the assignment of a multiplication
of a local variable (containing value 0) and a constant (set to 10) to a
second local variable would set a third local variable (containing 1) to
zero! If rewritten as a simple assignment and then a multiplying assignment
the phenomenon disappears.
Please find attached the script exemplifying the issue. It expects a light
sensor on 1, a motor turning the light sensor on B and a touch sensor on 2
being triggered when the motor turned the light sensor to 180° resp. -180°.
As a newbie to LEGO robotics (which both my son and me find fantastic) I
don't exclude that I overlooked some finesse of the RCX environment though
...
JP Brown <envcons@ameritech.net> schrieb in im Newsbeitrag:
398A46A0.65560838@ameritech.net...
> Dear All
>
> The beta version of the RIS 2.0 ATLClient software, firmware • (firm0328.lgo), and
> documentation are now available for download from the LEGO Mindstorms • site:
> http://www.legomindstorms.com/sdk2/
>
> Also, the winners of the alpha bug reporting competition are posted ;p
>
> Cheers
>
> JP
Regards,
Sebastian
--
Dipl.-Inform. Sebastian Wangnick
--- snip ---
program radarlight {
const segmente = 6
const messprosegment = 10
const messungen = 60 // segmente * messprosegment
const toterwinkel = 1 // 12 // 120ms mit Nackenschmerzen ...
const graddrehzaehler = 1 // 2 mit raupen
const graddrehnenner = 3 // 1 mit raupen
const drehstartzeit = 20
const drehpower = 8
const laufpower = 8
const laufzeit = 40 // 400ms laufen, dann weitersehen
output LinkesBein on 1
output RechtesBein on 3
output Kopf on 2
sensor Auge on 1
Auge is light as percent
sensor Nacken on 2
Nacken is switch as boolean
event Nackenschmerz when Nacken.pressed
var zeit
var kuckzeit // Zeit für 360°-Kopfdrehung in10 ms
// (Wird ungefähr 320 .. 325)
var synchro = 0
var uhrzeigersinn
var gehezusegment = -1
var anzeige = -1
main {
if Nacken is closed {
sound 5
stop tasks
}
display anzeige
forward Kopf // Im Uhrzeigersinn
uhrzeigersinn = 1
on Kopf
wait until Nackenschmerz
wait toterwinkel
reverse Kopf // Im Uhrzeigersinn
uhrzeigersinn = 1 - uhrzeigersinn
zeit = 0
start Zeitmessung
wait toterwinkel+20 // Um sicher den Taster zu verlassen
wait until Nackenschmerz
wait toterwinkel
kuckzeit = zeit*4
kuckzeit /= 5
synchro = 0
start Lichtmessung
start Bewegung
forever {
synchro = 1
reverse Kopf
uhrzeigersinn = 1 - uhrzeigersinn
on Kopf
wait toterwinkel+20 // Um sicher den Taster zu verlassen
wait until Nackenschmerz
wait toterwinkel
off Kopf
synchro = 2
while synchro <> 4 {
wait 1
}
}
}
task Zeitmessung {
priority 1
forever {
wait 1 // wait 10ms
zeit += 1
}
}
task Lichtmessung {
local messung
local segment
local messzeit
local maxlicht
local lichtsumme
local lichtmess
forever {
while synchro <> 1 {
wait 1
}
maxlicht = -1
segment = 0
zeit = 0
while segment < segmente {
messung = 0
lichtsumme = 0
lichtmess = 0
while messung < messprosegment {
lichtsumme += Auge
lichtmess += 1
messung += 1
messzeit = segment
messzeit *= messprosegment
messzeit = segment*messprosegment // BUG IF WRITTEN LIKE THIS
anzeige = messung
messzeit += messung
messzeit *= kuckzeit
messzeit /= messungen
while zeit < messzeit {
wait 1
if synchro = 2 {
messung = messprosegment
messzeit = 0
}
}
}
lichtsumme /= lichtmess
if lichtsumme > maxlicht {
maxlicht = lichtsumme
gehezusegment = segment
}
segment += 1
if synchro = 2 {
// Totale Sicherheit ...
segment = segmente
}
}
if uhrzeigersinn = 0 {
gehezusegment = segmente-gehezusegment
gehezusegment -= 1
}
while synchro <> 2 {
wait 1
}
kuckzeit = zeit
synchro = 3
}
}
task Bewegung {
local gradzahl
local drehzeit
forever {
while synchro <> 3 {
wait 1
}
if gehezusegment<0 {
sound 5
stop tasks
}
if gehezusegment+1>segmente {
sound 5
stop tasks
}
// 0: 150° links 1: 90° links 2: 30° links 3: 30° rechts 4: 90° rechts 5:
150° rechts
gradzahl = gehezusegment*360/segmente
gradzahl -= 180
gradzahl += 180/segmente
//anzeige = gradzahl
drehzeit = gradzahl *graddrehzaehler / graddrehnenner
if drehzeit<0 {
// Links heller
dir RechtesBein LinkesBein
} else {
dir LinkesBein RechtesBein
}
on [LinkesBein RechtesBein]
power [LinkesBein RechtesBein] drehpower
wait abs(drehzeit)+drehstartzeit
power [LinkesBein RechtesBein] laufpower
dir [LinkesBein RechtesBein] []
wait laufzeit
off [LinkesBein RechtesBein]
synchro = 4
}
}
}
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Message has 1 Reply:
Message is in Reply To:
 | | RIS 2.0 software now in beta
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| Dear All The beta version of the RIS 2.0 ATLClient software, firmware (firm0328.lgo), and documentation are now available for download from the LEGO Mindstorms site: (URL) the winners of the alpha bug reporting competition are posted ;p Cheers JP (24 years ago, 4-Aug-00, to lugnet.robotics.rcx, lugnet.robotics)
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