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• Getting error while installing mod_wsgi in centos

  - by user825904

  I have reinstalled python with enable shared [root@master mod_wsgi-3.4]# make clean rm -rf .libs rm -f mod_wsgi.o mod_wsgi.la mod_wsgi.lo mod_wsgi.slo mod_wsgi.loT rm -f config.log config.status rm -rf autom4te.cache [root@master mod_wsgi-3.4]# LD_RUN_PATH=/usr/local/lib make apxs -c -I/usr/local/include/python2.7 -DNDEBUG mod_wsgi.c -L/usr/local/lib -L/usr/local/lib/python2.7/config -lpython2.7 -lpthread -ldl -lutil -lm /usr/lib64/apr-1/build/libtool --silent --mode=compile gcc -prefer-pic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Wformat-security -fno-strict-aliasing -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -pthread -I/usr/include/httpd -I/usr/include/apr-1 -I/usr/include/apr-1 -I/usr/local/include/python2.7 -DNDEBUG -c -o mod_wsgi.lo mod_wsgi.c && touch mod_wsgi.slo In file included from /usr/local/include/python2.7/Python.h:8, from mod_wsgi.c:142: /usr/local/include/python2.7/pyconfig.h:1161:1: warning: "_POSIX_C_SOURCE" redefined In file included from /usr/include/sys/types.h:26, from /usr/include/apr-1/apr-x86_64.h:127, from /usr/include/apr-1/apr.h:19, from /usr/include/httpd/ap_config.h:25, from /usr/include/httpd/httpd.h:43, from mod_wsgi.c:34: /usr/include/features.h:162:1: warning: this is the location of the previous definition In file included from /usr/local/include/python2.7/Python.h:8, from mod_wsgi.c:142: /usr/local/include/python2.7/pyconfig.h:1183:1: warning: "_XOPEN_SOURCE" redefined In file included from /usr/include/sys/types.h:26, from /usr/include/apr-1/apr-x86_64.h:127, from /usr/include/apr-1/apr.h:19, from /usr/include/httpd/ap_config.h:25, from /usr/include/httpd/httpd.h:43, from mod_wsgi.c:34: /usr/include/features.h:164:1: warning: this is the location of the previous definition mod_wsgi.c: In function ‘wsgi_server_group’: mod_wsgi.c:991: warning: unused variable ‘value’ mod_wsgi.c: In function ‘Log_isatty’: mod_wsgi.c:1665: warning: unused variable ‘result’ mod_wsgi.c: In function ‘Log_writelines’: mod_wsgi.c:1802: warning: unused variable ‘msg’ mod_wsgi.c: In function ‘Adapter_output’: mod_wsgi.c:3087: warning: unused variable ‘n’ mod_wsgi.c: In function ‘Adapter_file_wrapper’: mod_wsgi.c:4138: warning: unused variable ‘result’ mod_wsgi.c: In function ‘wsgi_python_term’: mod_wsgi.c:5850: warning: unused variable ‘tstate’ mod_wsgi.c:5849: warning: unused variable ‘interp’ mod_wsgi.c: In function ‘wsgi_python_child_init’: mod_wsgi.c:7050: warning: unused variable ‘l’ mod_wsgi.c:6948: warning: unused variable ‘interp’ mod_wsgi.c: In function ‘wsgi_add_import_script’: mod_wsgi.c:7701: warning: unused variable ‘error’ mod_wsgi.c: In function ‘wsgi_add_handler_script’: mod_wsgi.c:8179: warning: unused variable ‘dconfig’ mod_wsgi.c:8178: warning: unused variable ‘sconfig’ mod_wsgi.c: In function ‘wsgi_hook_handler’: mod_wsgi.c:9375: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9377: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9379: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9383: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9403: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9405: warning: suggest parentheses around assignment used as truth value mod_wsgi.c:9408: warning: suggest parentheses around assignment used as truth value mod_wsgi.c: In function ‘wsgi_daemon_worker’: mod_wsgi.c:10819: warning: unused variable ‘duration’ mod_wsgi.c:10818: warning: unused variable ‘start’ mod_wsgi.c: In function ‘wsgi_hook_daemon_handler’: mod_wsgi.c:13172: warning: unused variable ‘i’ mod_wsgi.c:13170: warning: unused variable ‘elts’ mod_wsgi.c:13169: warning: unused variable ‘head’ mod_wsgi.c: At top level: mod_wsgi.c:8142: warning: ‘wsgi_set_user_authoritative’ defined but not used mod_wsgi.c:15251: warning: ‘wsgi_hook_check_user_id’ defined but not used /usr/lib64/apr-1/build/libtool --silent --mode=link gcc -o mod_wsgi.la -rpath /usr/lib64/httpd/modules -module -avoid-version mod_wsgi.lo -L/usr/local/lib -L/usr/local/lib/python2.7/config -lpython2.7 -lpthread -ldl -lutil -lm

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• Sun Grid Engine : jobs are not well balanced

  - by GlinesMome

  I use Open Grid Scheduler (a fork/copy of Sun Grid Engine). I have tried this configuration from master: # qconf -mattr exechost complex_values slots=8 slave2 # qconf -mq all.q | grep slots slots 100,[slave1=1],[slave2=8] slave1 is down, then I run 10 qsub with a sleep example (so no CPU consumption) but only 4 jobs are run at the same time on slave2 instead of I have put 8 slots. What does I missed ? PS: my goal is to provide infinite slots to force SGE to schedule only via consummable ressources.

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• Is there a simple way to merge a broken 2-way-MySQL replication

  - by ~kirrus

  Hello, I have a two way replication setup, with geographically distinct servers. Replication has broken, but I don't want to just choose one as master. Is there some way to restore replication in such a way that the two databases will be re-merged?

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• What will happen if MySQL cannot write to InnoDB log?

  - by Casey

  What happens to MySQL if the partition that contains InnoDB's log files (innodb_log_group_home_dir) becomes full, read-only or otherwise unwritable? If this did happen, what recovery process would be required? Could I use a slave to aid recovery of the master?

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• nagios levels of escalation

  - by com

  I try to configure nagios in the following way for every service (for example "mysql seconds behind master") I need to define few levels of escalations, when level is warning I want to send only email and when level is critical I want to send email and sms . What is the right way to do this? Do be stick we the levels definition (critical or warning), if there is different way to differentiate email level and sms level of escalation? Thanks!

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• Can capistrano or fabric be used to setup a server from scratch?

  - by Blankman

  I'm hoping there is a light weight, command line utility that I could use to setup a server from scratch. I like python's fabric or ruby's capistrano but from what I was reading they are more used for deployment purposes and not setting up apache, mysql, update patches etc. I know there are other tools like puppet, but I don't want to setup a master/slave for servers etc., I was hoping there was a more light-weight tool for this.

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• A name was started with an invalid character. Error processing resource

  - by Gallen

  Here is the exact error I'm getting when I try to launch my default.aspx file from the published folder. Can anybody point me in the right direction? The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later. -------------------------------------------------------------------------------- A name was started with an invalid character. Error processing resource 'file:///C:/inetpub/wwwroot/MHNProServices/Default.... <%@ Page Title="" Language="C#" MasterPageFile="~/ProServices.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs"... Here are the contents of default.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/ProServices.Master" AutoEventWireup="False" CodeBehind="Default.aspx.cs" Inherits="MHNProServices.Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server"> <link type="text/css" href="css/Default.css" rel="Stylesheet" /> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <div id="contentHead"> <img src="css/img/heading_landing.jpg" /> </div> <div id="contentTop"></div> <div id="content"> <div id="contentLeft"> <asp:Image ID="displayPicture" runat="server" /> <img id="displayOverlay"src="css/img/profilepicture_overlay.gif" /> <a id="contentButton_makeAppointment" href="Appointments.aspx?step=start"></a> <a id="contentButton_cancelAppointment" href="Appointments.aspx?step=cancel"></a> </div> <div id="contentRight"> <h3><asp:Label ID="lbl_homepageHeader" runat="server" Text=""></asp:Label></h3> <hr /> <asp:Label ID="lbl_homepageContent" runat="server" Text=""></asp:Label> </div> </div> <div id="contentBottom"></div> </asp:Content>

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• automated GUI tests fails when running from Jenkins

  - by adm

  Jenkins(master) is installed on the Linux system and runs automated tests on the node slave (Win-XP) via ssh connection. But all the GUi tests are failed, when GUI tests are running locally(WINXP system) testst are passed. I tried tscon.exe 0 /dest:console for forwards the calls to the console but I am getting the error: Could not connect sessionID 0 to sessionname console, Error code 7045 Error [7045]:The requested session access is denied. thanks

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• Apache Webserver on Linux config - Can I create a Virtual Index.html

  - by yogione

  I have number of directories under Apache webserver on linux. I need a file - index.html in each directory. Can I keep a master index.html file in a specific location and tell apache to use this just incase there is no real index.html file in one of the sub directories ?

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• How do you get autofs and updatedb to work together?

  - by Veek.M

  /etc/my.misc sda1 -fstype=ntfs,user,exec :/dev/sda1 sda3 -fstype=ntfs,user,exec :/dev/sda3 sda4 -fstype=ntfs,user,exec :/dev/sda4 /etc/auto.master /my /etc/my.misc --ghost When I run locate .pdf, I get nothing because though the mount points (sda1, sda2, ..) are created in /my - there's nothing in them till I access them. Unfortunately this is not good enough for updatedb and it purges its cache of /my/sdaX files. How do I prevent/solve this problem?

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• What is the usual procedure for working with remote Git repositories?

  - by James

  A slightly open question regarding best practices, I can find lots of functional guides for git but not much info about standard ordering of operations etc: Whats the standard/nice way of working with remote repositories, specifically for making a change and taking it all the way back to the remote master. Can someone provide a step-by-step list of procedures they normally follow when doing this. i.e. something like: 1) clone repo 2) create new local branch of head 3) make changes locally and commit to local branch 4) ...

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• ntp.conf sync to local machines

  - by anonym

  I have 2 linux machines, they do not have internet connectivity or any other means of getting an external clock. I need one of them to act as the "master"/server and the other machine to sync it's clock to that server. It's not important that the time is correct, it's only important that the time is the same on these 2 machines. So, give I have a server (192.168.1.10) and a client (192.168.1.11), how do I set up /etc/ntp.conf on these 2 machines respectivly ?

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• git pull-push giving error

  - by ntidote

  Hi i cloned a local repository on another server http://localipaddress/git/project . It created an empty repository. When i tried to pull from the repository, it gave me an error Your configuration specifies to merge with the ref 'master' from the remote but no such ref was detected. On push i get the following message error:Cannot access url "http://localipaddress/git/project" , return code 22 . Fatal git-http-push failed What could have been wrong.

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• A name was started with an invalid character. Error processing resource

  - by Gallen

  Here is the exact error I'm getting when I try to launch my default.aspx file from the published folder. Can anybody point me in the right direction? The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later. -------------------------------------------------------------------------------- A name was started with an invalid character. Error processing resource 'file:///C:/inetpub/wwwroot/MHNProServices/Default.... <%@ Page Title="" Language="C#" MasterPageFile="~/ProServices.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs"... Here are the contents of default.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/ProServices.Master" AutoEventWireup="False" CodeBehind="Default.aspx.cs" Inherits="MHNProServices.Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server"> <link type="text/css" href="css/Default.css" rel="Stylesheet" /> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <div id="contentHead"> <img src="css/img/heading_landing.jpg" /> </div> <div id="contentTop"></div> <div id="content"> <div id="contentLeft"> <asp:Image ID="displayPicture" runat="server" /> <img id="displayOverlay"src="css/img/profilepicture_overlay.gif" /> <a id="contentButton_makeAppointment" href="Appointments.aspx?step=start"></a> <a id="contentButton_cancelAppointment" href="Appointments.aspx?step=cancel"></a> </div> <div id="contentRight"> <h3><asp:Label ID="lbl_homepageHeader" runat="server" Text=""></asp:Label></h3> <hr /> <asp:Label ID="lbl_homepageContent" runat="server" Text=""></asp:Label> </div> </div> <div id="contentBottom"></div> </asp:Content>

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• How to deal with LVM encryption on remote restart?

  - by hydroparadise

  Is there a way to handle the LVM mounting password remotely? This is usually presented during boot on the main console (where the machine physically resides at). I am able to ssh in during the prompt, but other services (like http, ftp, etc) will not run until the password is succesfully entered in at boot. However, ssh does not show the same password prompt that master console shows. How do I enter the LVM password remotely on boot?

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• domain/IN: has no NS records

  - by thejartender

  I have set up a home web server using Ubuntu 12.10 and I can safely say that it works with regards to router forwarding and ports being found. I know this, because switched my hosting provider's VPS SOA record to use my ISP IP with an 'A' value and had my website running from home. This verified that my server was configured correctly so I started what I believe to be the final step in making my old desktop into a full DNS server. I found this tutorial that got me started My LAN network consists of the following: My router with a gateway of 10.0.0.zzz My server with an IP of 10.0.0.xxx A laptop with an IP of 10.0.0.yyy Step 1: I installed bind via sudo apt-get install bind9 Step2: I configured /etc/bind/named.conf.local with: zone "sognwebdesign.no" { type master; file "/etc/bind/zones/sognwebdesign.no.db"; }; zone "0.0.10.in-addr.arpa" { type master; file "/etc/bind/zones/rev.0.0.10.in-addr.arpa"; }; Step3: Updated /etc/bind/named.conf.options with two ISP DNS addresses Step 4: Updated /etc/resolv.confwith: nameserver 10.0.0.xxx search lan search sognwebdesign.no Step5: created a ``/etc/bind/zones directory Step6: Created /etc/bind/zones/sognwebdesign.no.dbwith: $TTL 3D @ IN SOA ns.sognwebdesign.no. admin.sognwebdesign.no. ( 2007062001 28800 3600 604800 38400 ); sognwebdesign.no. IN NS ns1.sognwebdesign.no. sognwebdesign.no. IN NS ns2.sognwebdesign.no. sognwebdesign.no. IN NS ns3.sognwebdesign.no. NS1 IN A 10.0.0.1 NS2 IN A 10.0.0.2 NS3 IN A 10.0.0.3 www IN A 10.0.0.4 yuccalaptop IN A 10.0.0.19 gw IN A 10.0.0.138 TXT "Network Gateway" Step 7: created/etc/bind/zones/rev.0.0.10.in-addr.arpawith: $TTL 3D @ IN SOA ns.sognwebdesign.no. admin.sognwebdesign.no. ( 2007062001 28800 604800 604800 86400 ); zzz IN PTR gw.sognwebdesign.no. 1 IN PTR ns1.sognwebdesign.no. 2 IN PTR ns2.sognwebdesign.no. 3 IN PTR ns3.sognwebdesign.no. yyy IN PTR yuccalaptop.sognwebdesign.no. I then restart bind and dig-x sognwebdesign.no and it works Lastly I perform named-checkzoneon each of my zone files, but me reverse zone fail fails with: sognwedesign.no/IN: has no NS records Can anyone explain what I am doing wrong here or assist me in getting this configured correctly?

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• Ubuntu + SSL ports + AVAST

  - by jurajvt

  I have an interesting problem with communication via standard SSL ports. Fresh installed Ubuntu 14.04 server + Postfix + Dovecot, SASL authentication provided by Dovecot, self-signed certificate generated trough the Dovecot script mkcert.sh. Redirected ports on ZyWALL USG 200. I can send and receive e-mails from outside with standard ports 25 and 110, but not over 587. I am connecting to my server from machine with Windows 8.1 + VMWare Player + Ubuntu 14.04 Desktop + ssh. On Windows host I have installed Avast! antivirus. When I am trying to telnet from virtual machine to server over 587, it refused connection. But when I turn on Avast! it let me in to message Connected to... Same with nmap. When Avast! is turned on it is show me all SSL ports. When I turned it off, only standard ports appeared. OpenSSL shows me CONNECTED(00000003). But outside virtual machine directly in Windows 8.1 using nmap with zenmap there are not opened SSL ports in both Avast! states. From other external linux machines are problems with touching SSL ports same - refused. I have turned on submission in master.cf and 587 port is correctly listening on 0.0.0.0 in process master.pid which belongs to Postfix. I can telnet, or nmap over port 587 to my domain directly from server. Other ports like 995, 993 are OK on localhost, too. It is true, that I can't send emails via 587 anyway (Avast! turned on/off), but I can see ports opened. It is possible, that I have simply bad certificate and Avast! has right one, so with turned it on I can see opened ports? EDIT: To be more clear, I can't see or using port 587 everywhere from outside (tried Thunderbird, telnet, openssl, nmap, putty, swaks; both from Linux or Windows machines) and that is my problem. It was only by chance that I saw opened ports when Avast! is turned on.

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• Exchange 2003 very reliant of 1 on 4 AD servers, Freezes without it

  - by user56717

  On-site we have 3 of 4 AD servers (AD1,AD2 and AD4) with AD1 having most of the Operational Master Roles, however when AD2 goes down, freezes or reboots outlook says 'waiting for exchange server AD2', when exchange is on a different box completely. AD4 was just built from scratch and added hoping to get around this reliance on AD2 but it doesn't seem to have any effect, had a look through exchange settings and couldn't find any locations it points to AD2 and no other active directory servers. Would appreciate some help on the matter, Thank You

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• ATX power: 20 or 24 pins?

  - by djechelon

  What is the difference between 20-pins ATX power cables and 24-pins ATX power cables for motherboard? I see that Cooler Master Silent Pro PSU has an extensible plug, showing 20 pins + 4 pluggable pins. Since I'm having troubles with my motherboard, which has 24 pins, I tried to connect only the first 20 and the system booted up fine. I'm curious: can any ATX motherboard run with 20-pins power? Will I simply experience lower performance?

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• What's wrong with Bundler working with RubyGems to push a Git repo to Heroku?

  - by stanigator

  I've made sure that all the files are in the root of the repository as recommended in this discussion. However, as I follow the instructions in this section of the book, I can't get through the section without the problems. What do you think is happening with my system that's causing the error? I have no clue at the moment of what the problem means despite reading the following in the log. Thanks in advance for your help! stanley@ubuntu:~/rails_sample/first_app$ git push heroku master Warning: Permanently added the RSA host key for IP address '50.19.85.156' to the list of known hosts. Counting objects: 96, done. Compressing objects: 100% (79/79), done. Writing objects: 100% (96/96), 28.81 KiB, done. Total 96 (delta 22), reused 0 (delta 0) -----> Heroku receiving push -----> Ruby/Rails app detected -----> Installing dependencies using Bundler version 1.2.0.pre Running: bundle install --without development:test --path vendor/bundle --binstubs bin/ --deployment Fetching gem metadata from https://rubygems.org/....... Installing rake (0.9.2.2) Installing i18n (0.6.0) Installing multi_json (1.3.5) Installing activesupport (3.2.3) Installing builder (3.0.0) Installing activemodel (3.2.3) Installing erubis (2.7.0) Installing journey (1.0.3) Installing rack (1.4.1) Installing rack-cache (1.2) Installing rack-test (0.6.1) Installing hike (1.2.1) Installing tilt (1.3.3) Installing sprockets (2.1.3) Installing actionpack (3.2.3) Installing mime-types (1.18) Installing polyglot (0.3.3) Installing treetop (1.4.10) Installing mail (2.4.4) Installing actionmailer (3.2.3) Installing arel (3.0.2) Installing tzinfo (0.3.33) Installing activerecord (3.2.3) Installing activeresource (3.2.3) Installing coffee-script-source (1.3.3) Installing execjs (1.3.2) Installing coffee-script (2.2.0) Installing rack-ssl (1.3.2) Installing json (1.7.3) with native extensions Installing rdoc (3.12) Installing thor (0.14.6) Installing railties (3.2.3) Installing coffee-rails (3.2.2) Installing jquery-rails (2.0.2) Using bundler (1.2.0.pre) Installing rails (3.2.3) Installing sass (3.1.18) Installing sass-rails (3.2.5) Installing sqlite3 (1.3.6) with native extensions Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /usr/local/bin/ruby extconf.rb checking for sqlite3.h... no sqlite3.h is missing. Try 'port install sqlite3 +universal' or 'yum install sqlite-devel' and check your shared library search path (the location where your sqlite3 shared library is located). *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/bin/ruby --with-sqlite3-dir --without-sqlite3-dir --with-sqlite3-include --without-sqlite3-include=${sqlite3-dir}/include --with-sqlite3-lib --without-sqlite3-lib=${sqlite3-dir}/lib --enable-local --disable-local Gem files will remain installed in /tmp/build_3tplrxvj7qa81/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.6 for inspection. Results logged to /tmp/build_3tplrxvj7qa81/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.6/ext/sqlite3/gem_make.out An error occurred while installing sqlite3 (1.3.6), and Bundler cannot continue. Make sure that `gem install sqlite3 -v '1.3.6'` succeeds before bundling. ! ! Failed to install gems via Bundler. ! ! Heroku push rejected, failed to compile Ruby/rails app To [email protected]:growing-mountain-2788.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to '[email protected]:growing-mountain-2788.git' ------Gemfile------------------------ As requested, here's the auto-generated gemfile: source 'https://rubygems.org' gem 'rails', '3.2.3' # Bundle edge Rails instead: # gem 'rails', :git => 'git://github.com/rails/rails.git' gem 'sqlite3' gem 'json' # Gems used only for assets and not required # in production environments by default. group :assets do gem 'sass-rails', '~> 3.2.3' gem 'coffee-rails', '~> 3.2.1' # See https://github.com/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', :platform => :ruby gem 'uglifier', '>= 1.0.3' end gem 'jquery-rails' # To use ActiveModel has_secure_password # gem 'bcrypt-ruby', '~> 3.0.0' # To use Jbuilder templates for JSON # gem 'jbuilder' # Use unicorn as the app server # gem 'unicorn' # Deploy with Capistrano # gem 'capistrano' # To use debugger # gem 'ruby-debug'

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• Game Design Dilemma

  - by Chris Williams

  I'm working on a 2d tilemapped RPG. I've actually made quite a fair amount of progress, but I'm at a point where I need to make a UI decision. I have the overland world completely mapped out, and I have several towns and special areas. I'm on the fence about how to integrate the two. Scenario 1: I have one ginormous map, where everything is the same scale. This means you can walk in and out of towns without having to load or wait and transition in any way. With everything the same scale, movement costs the same no matter where you are (in terms of time/turns/energy/hunger/whatever/etc...)  The potential downside to this is that it could take quite a long time to get anywhere on foot. Scenario 2: I have an overland map, a set of town maps, overland tactical maps, dungeon maps & special area maps. The overland map is at a different scale than the other maps. This means that time/turns/energy/hunger/whatever/etc is calculated at a different rate than on the other maps, which have a 1:1 scale. When entering a town, dungeon, special area or having a random encounter, you would effectively zoom in from the overland scale to the tactical scale. When you are done with combat, or exit a dungeon or town, it would zoom back out to the overland map. The downside to this is that at the zoomed out scale, the overland map isn't all that big (comparitively) and you can traverse it fairly quickly (in real time, not game world time.) Options: 1) Go with scenario 1, as is. 2) Go with scenario 1 and introduce a slightly speedier version of overland travel, such as a horse. 3) Go with scenario 1 and introduce "instant" travel, via portals or some kind of "click the big map" mechanism. This would only work with places you've already been, or somehow unlocked (perhaps via a quest.) 4) Go with Scenario 2, as is.   Thoughts, opinions, suggestions?  Feedback appreciated.

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• Character Stats and Power

  - by Stephen Furlani

  I'm making an RPG game system and I'm having a hard time deciding on doing detailed or abstract character statistics. These statistics define the character's natural - not learned - abilities. For example: Mass Effect: 0 (None that I can see) X20 (Xtreme Dungeon Mastery): 1 "STAT" Diablo: 4 "Strength, Magic, Dexterity, Vitality" Pendragon: 5 "SIZ, STR, DEX, CON, APP" Dungeons & Dragons (3.x, 4e): 6 "Str, Dex, Con, Wis, Int, Cha" Fallout 3: 7 "S.P.E.C.I.A.L." RIFTS: 8 "IQ, ME, MA, PS, PP, PE, PB, Spd" Warhammer Fantasy Roleplay (1st ed?): 12-ish "WS, BS, S, T, Ag, Int, WP, Fel, A, Mag, IP, FP" HERO (5th ed): 14 "Str, Dex, Con, Body, Int, Ego, Pre, Com, PD, ED, Spd, Rec, END, STUN" The more stats, the more complex and detailed your character becomes. This comes with a trade-off however, because you usually only have limited resources to describe your character. D&D made this infamous with the whole min/max-ing thing where strong characters were typically not also smart. But also, a character with a high Str typically also has high Con, Defenses, Hit Points/Health. Without high numbers in all those other stats, they might as well not be strong since they wouldn't hold up well in hand-to-hand combat. So things like that force trade-offs within the category of strength. So my original (now rejected) idea was to force players into deciding between offensive and defensive stats: Might / Body Dexterity / Speed Wit / Wisdom Heart Soul But this left some stat's without "opposites" (or opposites that were easily defined). I'm leaning more towards the following: Body (Physical Prowess) Mind (Mental Prowess) Heart (Social Prowess) Soul (Spiritual Prowess) This will define a character with just 4 numbers. Everything else gets based off of these numbers, which means they're pretty important. There won't, however, be ways of describing characters who are fast, but not strong or smart, but absent minded. Instead of defining the character with these numbers, they'll be detailing their character by buying skills and powers like these: Quickness Add a +2 Bonus to Body Rolls when Dodging. for a character that wants to be faster, or the following for a big, tough character Body Building Add a +2 Bonus to Body Rolls when Lifting, Pushing, or Throwing objects. [EDIT - removed subjectiveness] So my actual questions is what are some pitfalls with a small stat list and a large amount of descriptive powers? Is this more difficult to port cross-platform (pen&paper, PC) for example? Are there examples of this being done well/poorly? Thanks,

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• efficient collision detection - tile based html5/javascript game

  - by Tom Burman

  Im building a basic rpg game and onto collisions/pickups etc now. Its tile based and im using html5 and javascript. i use a 2d array to create my tilemap. Im currently using a switch statement for whatever key has been pressed to move the player, inside the switch statement. I have if statements to stop the player going off the edge of the map and viewport and also if they player is about to land on a tile with tileID 3 then the player stops. Here is the statement: canvas.addEventListener('keydown', function(e) { console.log(e); var key = null; switch (e.which) { case 37: // Left if (playerX > 0) { playerX--; } if(board[playerX][playerY] == 3){ playerX++; } break; case 38: // Up if (playerY > 0) playerY--; if(board[playerX][playerY] == 3){ playerY++; } break; case 39: // Right if (playerX < worldWidth) { playerX++; } if(board[playerX][playerY] == 3){ playerX--; } break; case 40: // Down if (playerY < worldHeight) playerY++; if(board[playerX][playerY] == 3){ playerY--; } break; } viewX = playerX - Math.floor(0.5 * viewWidth); if (viewX < 0) viewX = 0; if (viewX+viewWidth > worldWidth) viewX = worldWidth - viewWidth; viewY = playerY - Math.floor(0.5 * viewHeight); if (viewY < 0) viewY = 0; if (viewY+viewHeight > worldHeight) viewY = worldHeight - viewHeight; }, false); My question is, is there a more efficient way of handling collisions, then loads of if statements for each key? The reason i ask is because i plan on having many items that the player will need to be able to pickup or not walk through like walls cliffs etc. Thanks for your time and help Tom

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• How can I achieve a 3D-like effect with spritebatch's rotation and scale parameters

  - by Alic44

  I'm working on a 2d game with a top-down perspective similar to Secret of Mana and the 2D Final Fantasy games, with one big difference being that it's an action rpg using a 3-dimensional physics engine. I'm trying to draw an aimer graphic (basically an arrow) at my characters' feet when they're aiming a ranged weapon. At first I just converted the character's aim vector to radians and passed that into spritebatch, but there was a problem. The position of every object in my world is scaled for perspective when it's drawn to the screen. So if the physics engine coordinates are (1, 0, 1), the screen coords are actually (1, .707) -- the Y and Z axis are scaled by a perspective factor of .707 and then added together to get the screen coordinates. This meant that the direction the aimer graphic pointed (thanks to its rotation value passed into spritebatch) didn't match up with the direction the projectile actually traveled over time. Things looked fine when the characters fired left, right, up, or down, but if you fired on a diagonal the perspective of the physics engine didn't match with the simplistic way I was converting the character's aim direction to a screen rotation. Ok, fast forward to now: I've got the aimer's rotation matched up with the path the projectile will actually take, which I'm doing by decomposing a transform matrix which I build from two rotation matrices (one to represent the aimer's rotation, and one to represent the camera's 45 degree rotation on the x axis). My question is, is there a way to get not just rotation from a series of matrix transformations, but to also get a Vector2 scale which would give the aimer the appearance of being a 3d object, being warped by perspective? Orthographic perspective is what I'm going for, I think. So, the aimer arrow would get longer when facing sideways, and shorter when facing north and south because of the perspective. At the same time, it would get wider when facing north and south, and less wide when facing right or left. I'd like to avoid actually drawing the aimer texture in 3d because I'm still using spritebatch's layerdepth parameter at this point in my project, and I don't want to have to figure out how to draw a 3d object within the depth sorting system I already have. I can provide code and more details if this is too vague as a question... This is my first post on stack exchange. Thanks a lot for reading! Note: (I think) I realize it can't be a technically correct 3D perspective, because the spritebatch's vector2 scaling argument doesn't allow for an object to be skewed the way it actually should be. What I'm really interested in is, is there a good way to fake the effect, or should I just drop it and not scale at all? Edit to clarify without the help of a picture (apparently I can't post them yet): I want the aimer arrow to look like it has been painted on the ground at the character's feet, so it should appear to be drawn on the ground plane (in my case the XZ plane) which should be tilted at a 45 degree angle (around the X axis) from the viewing perspective. Alex

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• C++ and SDL resource management for 2D game

  - by KuruptedMagi

  My first question is about stateManagers. I do not use the singleton pattern (read many random posts with various reasons not to use it), I have gameStateManager which runs the pointer cCurrentGameState-render(), etc. I want to make a transitioning game, this engine should ideally cover both a platformer and a bird's eye RPG (with some recoding, I just mean the base engine), both of which will load different levels and events, such as world map, dungeon, shops, etc. So I then thought, rather then having to store all this data within all the states, I would break the engine into gameStates, and playStates... when gameState reaches gameStatePlay(), gameStatePlay simply runs the usual handleInput, logic, and render for the playStates, just as the low level gameStateManager does. This lets me store all the player data within the base playstate class without storing useless data in the gameStates. Now I have added a seperate mapEditor, which uses editorStates from gameStateEditor. Is this too much usage of the gameState concept? It seems to work pretty well for me, so I was wondering if I am too far off a common implementation of this. My second question is on image resources. I have my sprite class with nothing but static members, mainly loadImage, applySurface, and my screen pointer. I also have a map pairing imageName enums with actual SDL_Surface pointers, and one pairing clipNumber enums with a wrapper class for a vector of clips, so that each reference in the map can have different amounts of clips with different sizes. I thought it would be better to store all these images, and screen within one static body, since 20 different goblins all use the same sprite sheet, and all need to print to the same screen, and of course, this way I do not need to pass my screen reference to every little entity. The imageMap seems to work very well, I can even add the ability to search through the map at creation of entity type to see if a particular image at creation, creating if it doesnt exist, and destroying the image if the last entity that needs it was just destroyed. The vectored clip map however, seems to take too long to initialize, so if i run past the state that initializes them to fast, the game crashes <. Plus, the clip map call is half of this line =P SPRITE::applySurface( cEditorMap.cTiles[x][y].iX, cEditorMap.cTiles[x][y].iY, SPRITE::mImages[ IMAGE_TILEMAP ], SPRITE::screen, SPRITE::mImageClips[IMAGE_TILEMAP]->clips.at( cEditorMap.cTiles[x][y].iTileType ) ); Again, do I have the right idea? I like the imageMap, but am I better off with each entity storing its own clips? My last question is about collision detection. I only grasp the basics, will look at per-pixel and circular soon, but how can I determine which side the collision comes from with just the basic square collision detection, I tried breaking each entity into 4 collision zones, but that just gave me problems with walking through walls and the like <. Also, is per-pixel color collision a good way to decide what collision just occured, or is checking multiple colors for multiple entities too taxing each cycle?

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