coucou,j'ai trouvé la solution!!!
il faut éditer le fichier "gameinfo.txt", chez moi il se trouve ici : "E:\steam\steamapps\sourcemods\portal prelude" (j'ai déplacé steam sur un autre disque).
ensuite il faut remplacer le contenu du fichier par ca :
"GameInfo"
{
game "Portal: Prelude"
title "Portal: Prelude"
type singleplayer_only
nodifficulty 1
hasportals 1
nocrosshair 1
nomodels 1
developer "Nicolas 'NykO18' Grevet"
developer_url "http://www.portalprelude.com"
manual "http://www.portalprelude.com/forum"
icon "resource/prelude"
FileSystem
{
SteamAppId 400
SearchPaths
{
game+mod |gameinfo_path|.
platform |gameinfo_path|.
// We search VPK files before ordinary folders, because most files will be found in
// VPK and we can avoid making thousands of file system calls to attempt to open files
// in folders where they don't exist. (Searching a VPK is much faster than making an operating
// system call.)
game_lv portal/portal_lv.vpk
game+mod portal/portal_english.vpk
game+mod portal/portal_pak.vpk
game |all_source_engine_paths|hl2/hl2_textures.vpk
game |all_source_engine_paths|hl2/hl2_sound_vo_english.
vpk
game |all_source_engine_paths|hl2/hl2_sound_misc.vpk
game |all_source_engine_paths|hl2/hl2_misc.vpk
platform |all_source_engine_paths|platform/platform_misc.vp
k
// Now search loose files. We'll set the directory containing the gameinfo.txt file
// as the first "mod" search path (after any user customizations). This is also the one
// that's used when writing to the "mod" path.
mod+mod_write+default_write_path |gameinfo_path|.
// Add the mod directory as a game search path. This is also where where writes
// to the "game" path go.
game+game_write |gameinfo_path|.
// Where the game's binaries are
gamebin portal/bin
// Last, mount in shared Portal loose files
game |all_source_engine_paths|portal
// Last, mount in shared HL2 loose files
game |all_source_engine_paths|hl2
platform |all_source_engine_paths|platform
}
}
}
et ça marche!!!!
plus qu'a appuyer 2 fois sur "esc" pour passer les logos de démarrage qui sont corrompu, puis changer la résolution et le mettre en plein écran.
bon jeu!!!