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Add support for putting modpacks directly into mod directories

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This commit is contained in:
Perttu Ahola 2012-05-21 19:49:35 +03:00
parent 1f670fc688
commit 747ff7daf8
2 changed files with 82 additions and 35 deletions
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6
doc/lua_api.txt
View File

@ -59,6 +59,12 @@ This happens if the following directory exists:
Mods should be then be placed in:
$world/game/mods/
Modpack support
----------------
Mods can be put in a subdirectory, if the parent directory, which otherwise
should be a mod, contains a file named modpack.txt. This file shall be
empty, except for lines starting with #, which are comments.
Mod directory structure
------------------------
mods

111
src/mods.cpp
View File

@ -26,6 +26,64 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "strfnd.h"
#include "log.h"
static void collectMods(const std::string &modspath,
std::queue<ModSpec> &mods_satisfied,
core::list<ModSpec> &mods_unsorted,
std::map<std::string, std::string> &mod_names,
std::string indentation)
{
TRACESTREAM(<<indentation<<"collectMods(\""<<modspath<<"\")"<<std::endl);
TRACEDO(indentation += " ");
std::vector<fs::DirListNode> dirlist = fs::GetDirListing(modspath);
for(u32 j=0; j<dirlist.size(); j++){
if(!dirlist[j].dir)
continue;
std::string modname = dirlist[j].name;
std::string modpath = modspath + DIR_DELIM + modname;
TRACESTREAM(<<indentation<<"collectMods: "<<modname<<" at \""<<modpath<<"\""<<std::endl);
// Handle modpacks (defined by containing modpack.txt)
{
std::ifstream is((modpath+DIR_DELIM+"modpack.txt").c_str(),
std::ios_base::binary);
if(is.good()){
// Is a modpack
is.close(); // We don't actually need the file
// Recurse into it
collectMods(modpath, mods_satisfied, mods_unsorted, mod_names, indentation);
continue;
}
}
// Detect mod name conflicts
{
std::map<std::string, std::string>::const_iterator i;
i = mod_names.find(modname);
if(i != mod_names.end()){
std::string s;
infostream<<indentation<<"WARNING: Mod name conflict detected: "
<<std::endl
<<"Already loaded: "<<i->second<<std::endl
<<"Will not load: "<<modpath<<std::endl;
continue;
}
}
std::set<std::string> depends;
std::ifstream is((modpath+DIR_DELIM+"depends.txt").c_str(),
std::ios_base::binary);
while(is.good()){
std::string dep;
std::getline(is, dep);
dep = trim(dep);
if(dep != "")
depends.insert(dep);
}
ModSpec spec(modname, modpath, depends);
mods_unsorted.push_back(spec);
if(depends.empty())
mods_satisfied.push(spec);
mod_names[modname] = modpath;
}
}
// Get a dependency-sorted list of ModSpecs
core::list<ModSpec> getMods(core::list<std::string> &modspaths)
throw(ModError)
@ -38,41 +96,7 @@ core::list<ModSpec> getMods(core::list<std::string> &modspaths)
for(core::list<std::string>::Iterator i = modspaths.begin();
i != modspaths.end(); i++){
std::string modspath = *i;
std::vector<fs::DirListNode> dirlist = fs::GetDirListing(modspath);
for(u32 j=0; j<dirlist.size(); j++){
if(!dirlist[j].dir)
continue;
std::string modname = dirlist[j].name;
std::string modpath = modspath + DIR_DELIM + modname;
// Detect mod name conflicts
{
std::map<std::string, std::string>::const_iterator i;
i = mod_names.find(modname);
if(i != mod_names.end()){
std::string s;
infostream<<"WARNING: Mod name conflict detected: "
<<std::endl
<<"Already loaded: "<<i->second<<std::endl
<<"Will not load: "<<modpath<<std::endl;
continue;
}
}
std::set<std::string> depends;
std::ifstream is((modpath+DIR_DELIM+"depends.txt").c_str(),
std::ios_base::binary);
while(is.good()){
std::string dep;
std::getline(is, dep);
dep = trim(dep);
if(dep != "")
depends.insert(dep);
}
ModSpec spec(modname, modpath, depends);
mods_unsorted.push_back(spec);
if(depends.empty())
mods_satisfied.push(spec);
mod_names[modname] = modpath;
}
collectMods(modspath, mods_satisfied, mods_unsorted, mod_names, "");
}
// Sort by depencencies
while(!mods_satisfied.empty()){
@ -107,9 +131,26 @@ core::list<ModSpec> getMods(core::list<std::string> &modspaths)
errs<<"."<<std::endl;
mods_sorted.push_back(mod);
}
// If an error occurred, throw an exception
if(errs.str().size() != 0){
throw ModError(errs.str());
}
// Print out some debug info
TRACESTREAM(<<"Detected mods in load order:"<<std::endl);
for(core::list<ModSpec>::Iterator i = mods_sorted.begin();
i != mods_sorted.end(); i++){
ModSpec &mod = *i;
TRACESTREAM(<<"name=\""<<mod.name<<"\" path=\""<<mod.path<<"\"");
TRACESTREAM(<<" depends=[");
for(std::set<std::string>::iterator i = mod.depends.begin();
i != mod.depends.end(); i++)
TRACESTREAM(<<" "<<(*i));
TRACESTREAM(<<" ] unsatisfied_depends=[");
for(std::set<std::string>::iterator i = mod.unsatisfied_depends.begin();
i != mod.unsatisfied_depends.end(); i++)
TRACESTREAM(<<" "<<(*i));
TRACESTREAM(<<" ]"<<std::endl);
}
return mods_sorted;
}