def view_playground(request):
me = Student.from_request(request)
# Compile the code and save it in the database.
good = False
pattern = None
name = ""
if request.method == "POST":
try:
old = CodeSubmission.objects.filter(student=me, challenge=None).order_by("-timestamp")[0]
except:
old = None
# Get code from the POST request.
name = slugify(request.POST.get("name") if request.POST.get("name") else "untitled")[:32]
code = request.POST.get("code") if request.POST.get("code") else ""
try:
pattern = Pattern.objects.get(name=str(request.POST.get("pattern")))
except:
pattern = None
# Save this in the database whether it compiles or not.
CR = CodeSubmission()
CR.name = name
CR.student = me
CR.code = code
CR.pattern = pattern
CR.save()
good = assembler.assemble_and_store(request, name, code, pattern)
publish = False
if "publish" in request.POST and me and not me.banned and good:
publish = True
# Convert the last code submission into a diff image, but only save it
# if the diff is actually smaller than the full code.
if old and old.published == 0:
old.parent = CR
old_code = old.code
old.code = ""
for d in difflib.unified_diff(CR.code.splitlines(True), old_code.splitlines(True)):
old.code += d
if len(old.code) < len(old_code):
old.save()
# Redirect based on which button was clicked.
if publish:
CR.published = len(CodeSubmission.objects.filter(published__gt=0)) + 1
CR.save()
return redirect("playground")
elif "download" in request.POST and good:
return redirect("rom")
else:
return redirect("playground")
# Render the page.
code = ""
if "rom_code" in request.session:
code = request.session["rom_code"]
pattern = request.session.get("rom_pattern")
name = str(request.session.get("rom_name"))
elif me:
subs = CodeSubmission.objects.filter(student=me, challenge=None).order_by("-timestamp")
if len(subs) > 0:
code = subs[0].code
name = subs[0].name
# Get recently published games.
recent = CodeSubmission.objects.filter(published__gt=0).order_by("-timestamp")
return render(
request,
"playground.html",
{
"name": name,
"pattern": pattern,
"patterns": Pattern.objects.all(),
"code": code,
"recently_published": recent[:25],
"alerts": request.session.pop("alerts", []),
},
)
def view_challenge(request, name):
me = Student.from_request(request)
# First, try to get the challenge.
try: challenge = Challenge.objects.get(slug=name)
except exceptions.ObjectDoesNotExist: raise Http404()
# Find the records for this submission. We need them whether we are viewing
# or processing.
my_size, my_speed = 0x10000, 0x10000
best_size, best_speed = 0x1000000, 0x1000000
completed = False
records = CodeSubmission.objects.filter(challenge=challenge, is_correct=True).order_by('rom_size')
if len(records) > 0:
best_size = records[0].rom_size
records = records.order_by('runtime')
best_speed = records[0].runtime
records = records.filter(student=me).order_by('rom_size')
if len(records) > 0:
my_size = records[0].rom_size
records = records.order_by('runtime')
my_speed = records[0].runtime
completed = True
# If it was a POST request, then we'll take care of that now. This takes
# care of the side-effects and creates the challenge responses that will be
# handled below.
code = ""
if request.method == "POST":
try: old = CodeSubmission.objects.filter(student=me, challenge=challenge).order_by('-timestamp')[0]
except: old = None
code = request.POST.get("code") if "code" in request.POST else ""
CR = CodeSubmission()
CR.student = me
CR.challenge = challenge
CR.code = code
CR.is_correct = False if challenge.autograde else None
CR.save()
# Convert the last code submission into a diff image, but only save it
# if the diff is actually smaller than the full code.
if old and len(SOS.objects.filter(submission=old)) == 0:
old.parent = CR
old_code = old.code
old.code = ""
for d in difflib.unified_diff( CR.code.splitlines(True), old_code.splitlines(True)):
old.code += d
if len(old.code) < len(old_code):
old.save()
# Only try to autograde if the program compiles.
compiles = assembler.assemble_and_store(request, "challenge%s"%challenge.slug,
code, challenge.pattern, challenge.preamble, challenge.postamble)
if compiles and challenge.autograde:
completed = me in challenge.completed_by.all()
results = autograde.grade( challenge, me, code, completed )
# Save its correctness in the database.
CR.is_correct = True if results else False
if results: CR.rom_size, CR.runtime = results
CR.save()
# Award victory if the program is correct.
if results and not completed:
challenge.completed_by.add(me)
challenge.save()
request.session['alerts'].append(('alert-success',
'''Congratulations! You completed
this challenge! Can you make it
more efficient?'''))
LogEntry.log(request, "Completed %s"%challenge.slug)
elif results:
request.session['alerts'].append(('alert-success',
'''This solution was %d bytes in
size and executed %d instructions.'''%results))
LogEntry.log(request, "%s: %d, %d"%(challenge.slug,results[0],results[1]))
# Is there an SOS involved?
if "sos" in request.POST and "help" in request.POST:
for s in SOS.objects.filter(challenge=challenge, student=me):
s.active = False
s.save()
s = SOS()
s.challenge = challenge
s.submission = CR
s.content = request.POST["help"]
s.student = me
s.save()
# Handle the redirect.
if "download" in request.POST and compiles:
return redirect("rom")
return redirect("challenge", challenge.slug)
# Load the latest submission code to display it on the screen.
subs = CodeSubmission.objects.filter(student=me, challenge=challenge).order_by('-timestamp')
if len(subs) > 0: code = subs[0].code
# Try to load up the best submissions by everyone.
return render(request, "challenge.html", {'challenge': challenge,
'alerts': request.session.pop('alerts', []),
'code': code,
'my_size': my_size,
'my_speed': my_speed,
'best_size': best_size,
'best_speed': best_speed,
'completed': completed,
'feedback': SOS.objects.filter(challenge=challenge, student=me) } )
