//===========================================================================
// Blizzard.j ( define Jass2 functions that need to be in every map script )
//===========================================================================

globals
    //...
    // Singleplayer check
    boolean            bj_isSinglePlayer           = false
    //...
endglobals

function InitBlizzardGlobals takes nothing returns nothing
    local integer index
    local integer userControlledPlayers
    //...

    // Init singleplayer check
    set bj_isSinglePlayer = false
    set userControlledPlayers = 0
    set index = 0
    loop
        exitwhen index >= bj_MAX_PLAYERS
        if (GetPlayerController(Player(index)) == MAP_CONTROL_USER and GetPlayerSlotState(Player(index)) == PLAYER_SLOT_STATE_PLAYING) then
            set userControlledPlayers = userControlledPlayers + 1
        endif
        set index = index + 1
    endloop
    set bj_isSinglePlayer = (userControlledPlayers == 1)
    //...

endfunction

set index = 0
set i = 0
loop
    if GetPlayerController(Player(index)) == MAP_CONTROL_USER and GetPlayerSlotState(Player(index)) == PLAYER_SLOT_STATE_PLAYING then
        exitwhen i > 1
        set i = i + 1
    endif
    exitwhen index == 11
    set index = index + 1
endloop
set bj_isSinglePlayer = i == 1