hedgewars/uUtils.pas
author unc0rr
Sun, 02 Dec 2012 01:25:11 +0400
changeset 8178 8bd087478b48
parent 8095 df61e150eb70
child 8204 9a6030d96273
permissions -rw-r--r--
Fix QSettings problems: - Reopen file in ReadOnly mode if it was open in ReadWrite mode and is being read. This is needed for stupid QSettings which opens file in ReadWrite mode just to call readAll() on it. - Implement setSize(0)

(*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 *)

{$INCLUDE "options.inc"}

unit uUtils;

interface
uses uTypes, uFloat, GLunit;

procedure SplitBySpace(var a, b: shortstring);
procedure SplitByChar(var a, b: shortstring; c: char);
procedure SplitByChar(var a, b: ansistring; c: char);

{$IFNDEF PAS2C}
function  EnumToStr(const en : TGearType) : shortstring; overload;
function  EnumToStr(const en : TVisualGearType) : shortstring; overload;
function  EnumToStr(const en : TSound) : shortstring; overload;
function  EnumToStr(const en : TAmmoType) : shortstring; overload;
function  EnumToStr(const en : THogEffect) : shortstring; overload;
function  EnumToStr(const en : TCapGroup) : shortstring; overload;
{$ENDIF}

function  Min(a, b: LongInt): LongInt; inline;
function  Max(a, b: LongInt): LongInt; inline;

function  IntToStr(n: LongInt): shortstring;
function  StrToInt(s: shortstring): LongInt;
function  FloatToStr(n: hwFloat): shortstring;

function  DxDy2Angle(const _dY, _dX: hwFloat): GLfloat; inline;
function  DxDy2Angle32(const _dY, _dX: hwFloat): LongInt;
function  DxDy2AttackAngle(const _dY, _dX: hwFloat): LongInt;
function  DxDy2AttackAnglef(const _dY, _dX: extended): LongInt;

procedure SetLittle(var r: hwFloat);

function  Str2PChar(const s: shortstring): PChar;
function  DecodeBase64(s: shortstring): shortstring;

function  isPowerOf2(i: Longword): boolean;
function  toPowerOf2(i: Longword): Longword; inline;

function  endian(independent: LongWord): LongWord; inline;

function  CheckCJKFont(s: ansistring; font: THWFont): THWFont;

procedure AddFileLog(s: shortstring);
procedure AddFileLogRaw(s: pchar); cdecl;

function  CheckNoTeamOrHH: boolean; inline;

function  GetLaunchX(at: TAmmoType; dir: LongInt; angle: LongInt): LongInt;
function  GetLaunchY(at: TAmmoType; angle: LongInt): LongInt;

{$IFNDEF PAS2C}
procedure Write(var f: textfile; s: shortstring);
procedure WriteLn(var f: textfile; s: shortstring);
{$ENDIF}

procedure initModule(isNotPreview: boolean);
procedure freeModule;


implementation
uses {$IFNDEF PAS2C}typinfo, {$ENDIF}Math, uConsts, uVariables, SysUtils;

{$IFDEF DEBUGFILE}
var f: textfile;
{$IFDEF USE_VIDEO_RECORDING}
    logMutex: TRTLCriticalSection; // mutex for debug file
{$ENDIF}
{$ENDIF}
var CharArray: array[byte] of Char;

procedure SplitBySpace(var a,b: shortstring);
begin
SplitByChar(a,b,' ');
end;

// should this include "strtolower()" for the split string?
procedure SplitByChar(var a, b: shortstring; c : char);
var i, t: LongInt;
begin
i:= Pos(c, a);
if i > 0 then
    begin
    for t:= 1 to Pred(i) do
        if (a[t] >= 'A')and(a[t] <= 'Z') then
            Inc(a[t], 32);
    b:= copy(a, i + 1, Length(a) - i);
    a[0]:= char(Pred(i))
    end
else
    b:= '';
end;

procedure SplitByChar(var a, b: ansistring; c: char);
var i: LongInt;
begin
i:= Pos(c, a);
if i > 0 then
    begin
    b:= copy(a, i + 1, Length(a) - i);
    setlength(a, Pred(i));
    end else b:= '';
end;

{$IFNDEF PAS2C}
function EnumToStr(const en : TGearType) : shortstring; overload;
begin
EnumToStr:= GetEnumName(TypeInfo(TGearType), ord(en))
end;
function EnumToStr(const en : TVisualGearType) : shortstring; overload;
begin
EnumToStr:= GetEnumName(TypeInfo(TVisualGearType), ord(en))
end;

function EnumToStr(const en : TSound) : shortstring; overload;
begin
EnumToStr:= GetEnumName(TypeInfo(TSound), ord(en))
end;

function EnumToStr(const en : TAmmoType) : shortstring; overload;
begin
EnumToStr:= GetEnumName(TypeInfo(TAmmoType), ord(en))
end;

function EnumToStr(const en: THogEffect) : shortstring; overload;
begin
EnumToStr := GetEnumName(TypeInfo(THogEffect), ord(en))
end;

function EnumToStr(const en: TCapGroup) : shortstring; overload;
begin
EnumToStr := GetEnumName(TypeInfo(TCapGroup), ord(en))
end;
{$ENDIF}

function Min(a, b: LongInt): LongInt;
begin
if a < b then
    Min:= a
else
    Min:= b
end;

function Max(a, b: LongInt): LongInt;
begin
if a > b then
    Max:= a
else
    Max:= b
end;


function IntToStr(n: LongInt): shortstring;
begin
str(n, IntToStr)
end;

function  StrToInt(s: shortstring): LongInt;
var c: LongInt;
begin
val(s, StrToInt, c)
end;

function FloatToStr(n: hwFloat): shortstring;
begin
FloatToStr:= cstr(n) + '_' + inttostr(Lo(n.QWordValue))
end;


function DxDy2Angle(const _dY, _dX: hwFloat): GLfloat; inline;
var dY, dX: Extended;
begin
dY:= hwFloat2Float(_dY);
dX:= hwFloat2Float(_dX);
DxDy2Angle:= arctan2(dY, dX) * 180 / pi
end;

function DxDy2Angle32(const _dY, _dX: hwFloat): LongInt;
const _16divPI: Extended = 16/pi;
var dY, dX: Extended;
begin
dY:= hwFloat2Float(_dY);
dX:= hwFloat2Float(_dX);
DxDy2Angle32:= trunc(arctan2(dY, dX) * _16divPI) and $1f
end;

function DxDy2AttackAngle(const _dY, _dX: hwFloat): LongInt;
const MaxAngleDivPI: Extended = cMaxAngle/pi;
var dY, dX: Extended;
begin
dY:= hwFloat2Float(_dY);
dX:= hwFloat2Float(_dX);
DxDy2AttackAngle:= trunc(arctan2(dY, dX) * MaxAngleDivPI)
end;

function DxDy2AttackAnglef(const _dY, _dX: extended): LongInt; inline;
begin
DxDy2AttackAnglef:= trunc(arctan2(_dY, _dX) * (cMaxAngle/pi))
end;


procedure SetLittle(var r: hwFloat);
begin
r:= SignAs(cLittle, r)
end;


function isPowerOf2(i: Longword): boolean;
begin
isPowerOf2:= (i and (i - 1)) = 0
end;

function toPowerOf2(i: Longword): Longword;
begin
toPowerOf2:= 1;
while (toPowerOf2 < i) do toPowerOf2:= toPowerOf2 shl 1
end;


function DecodeBase64(s: shortstring): shortstring;
const table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
var i, t, c: Longword;
begin
c:= 0;
for i:= 1 to Length(s) do
    begin
    t:= Pos(s[i], table);
    if s[i] = '=' then
        inc(c);
    if t > 0 then
        s[i]:= char(t - 1)
    else
        s[i]:= #0
    end;

i:= 1;
t:= 1;
while i <= length(s) do
    begin
    DecodeBase64[t    ]:= char((byte(s[i    ]) shl 2) or (byte(s[i + 1]) shr 4));
    DecodeBase64[t + 1]:= char((byte(s[i + 1]) shl 4) or (byte(s[i + 2]) shr 2));
    DecodeBase64[t + 2]:= char((byte(s[i + 2]) shl 6) or (byte(s[i + 3])      ));
    inc(t, 3);
    inc(i, 4)
    end;

if c < 3 then
    t:= t - c;

DecodeBase64[0]:= char(t - 1)
end;


function Str2PChar(const s: shortstring): PChar;
begin
CharArray:= s;
CharArray[Length(s)]:= #0;
Str2PChar:= @CharArray
end;


function endian(independent: LongWord): LongWord; inline;
begin
{$IFDEF ENDIAN_LITTLE}
endian:= independent;
{$ELSE}
endian:= (((independent and $FF000000) shr 24) or
          ((independent and $00FF0000) shr 8) or
          ((independent and $0000FF00) shl 8) or
          ((independent and $000000FF) shl 24))
{$ENDIF}
end;


procedure AddFileLog(s: shortstring);
begin
s:= s;
{$IFDEF DEBUGFILE}
{$IFDEF USE_VIDEO_RECORDING}
EnterCriticalSection(logMutex);
{$ENDIF}
writeln(f, inttostr(GameTicks)  + ': ' + s);
flush(f);
{$IFDEF USE_VIDEO_RECORDING}
LeaveCriticalSection(logMutex);
{$ENDIF}
{$ENDIF}
end;

procedure AddFileLogRaw(s: pchar); cdecl;
begin
s:= s;
{$IFDEF DEBUGFILE}
{$IFDEF USE_VIDEO_RECORDING}
EnterCriticalSection(logMutex);
{$ENDIF}
write(f, s);
flush(f);
{$IFDEF USE_VIDEO_RECORDING}
LeaveCriticalSection(logMutex);
{$ENDIF}
{$ENDIF}
end;

function CheckCJKFont(s: ansistring; font: THWFont): THWFont;
var l, i : LongInt;
    u: WideChar;
    tmpstr: array[0..256] of WideChar;
begin
CheckCJKFont:= font;

{$IFNDEF MOBILE}
// remove chinese fonts for now
if (font >= CJKfnt16) or (length(s) = 0) then
{$ENDIF}
    exit;

l:= Utf8ToUnicode(@tmpstr, Str2PChar(s), length(s))-1;
i:= 0;

while i < l do
    begin
    u:= tmpstr[i];
    if (#$1100  <= u) and  (
                           (u <= #$11FF )  or // Hangul Jamo
       ((#$2E80  <= u) and (u <= #$2FDF))  or // CJK Radicals Supplement / Kangxi Radicals
       ((#$2FF0  <= u) and (u <= #$303F))  or // Ideographic Description Characters / CJK Radicals Supplement
       ((#$3130  <= u) and (u <= #$318F))  or // Hangul Compatibility Jamo
       ((#$31C0  <= u) and (u <= #$31EF))  or // CJK Strokes
       ((#$3200  <= u) and (u <= #$4DBF))  or // Enclosed CJK Letters and Months / CJK Compatibility / CJK Unified Ideographs Extension A
       ((#$4E00  <= u) and (u <= #$9FFF))  or // CJK Unified Ideographs
       ((#$AC00  <= u) and (u <= #$D7AF))  or // Hangul Syllables
       ((#$F900  <= u) and (u <= #$FAFF))  or // CJK Compatibility Ideographs
       ((#$FE30  <= u) and (u <= #$FE4F)))    // CJK Compatibility Forms
       then 
        begin
            CheckCJKFont:=  THWFont( ord(font) + ((ord(High(THWFont))+1) div 2) );
            exit;
        end;
    inc(i)
    end;
(* two more to check. pascal WideChar is only 16 bit though
       ((#$20000 <= u) and (u >= #$2A6DF)) or // CJK Unified Ideographs Extension B
       ((#$2F800 <= u) and (u >= #$2FA1F)))   // CJK Compatibility Ideographs Supplement *)
end;


function GetLaunchX(at: TAmmoType; dir: LongInt; angle: LongInt): LongInt;
begin
GetLaunchX:= 0
(*
    if (Ammoz[at].ejectX <> 0) or (Ammoz[at].ejectY <> 0) then
        GetLaunchX:= sign(dir) * (8 + hwRound(AngleSin(angle) * Ammoz[at].ejectX) + hwRound(AngleCos(angle) * Ammoz[at].ejectY))
    else
        GetLaunchX:= 0 *)
end;

function GetLaunchY(at: TAmmoType; angle: LongInt): LongInt;
begin
GetLaunchY:= 0
(*
    if (Ammoz[at].ejectX <> 0) or (Ammoz[at].ejectY <> 0) then
        GetLaunchY:= hwRound(AngleSin(angle) * Ammoz[at].ejectY) - hwRound(AngleCos(angle) * Ammoz[at].ejectX) - 2
    else
        GetLaunchY:= 0*)
end;

function CheckNoTeamOrHH: boolean;
begin
CheckNoTeamOrHH:= (CurrentTeam = nil) or (CurrentHedgehog^.Gear = nil);
end;

{$IFNDEF PAS2C}
procedure Write(var f: textfile; s: shortstring);
begin
system.write(f, s)
end;

procedure WriteLn(var f: textfile; s: shortstring);
begin
system.writeln(f, s)
end;
{$ENDIF}

procedure initModule(isNotPreview: boolean);
{$IFDEF DEBUGFILE}
var logfileBase: shortstring;
    i: LongInt;
{$ENDIF}
begin
{$IFDEF DEBUGFILE}
    if isNotPreview then
    begin
        if GameType = gmtRecord then
            logfileBase:= 'rec'
        else
            logfileBase:= 'game';
    end
    else
        logfileBase:= 'preview';
{$IFDEF USE_VIDEO_RECORDING}
    InitCriticalSection(logMutex);
{$ENDIF}
{$I-}
{$IFDEF MOBILE}
    {$IFDEF IPHONEOS} Assign(f, UserPathPrefix + '/hw-' + logfileBase + '.log'); {$ENDIF}
    {$IFDEF ANDROID} Assign(f, pathPrefix + '/' + logfileBase + '.log'); {$ENDIF}
    i:= i; // avoid hint
{$ELSE}
    f:= stdout; // if everything fails, write to stderr
    if (UserPathPrefix <> '') then
        begin
        if not FileExists(UserPathPrefix + '/Logs/') then
            CreateDir(UserPathPrefix + '/Logs/');
        i:= 0;
        while(i < 7) do
            begin
            assign(f, UserPathPrefix + '/Logs/' + logfileBase + inttostr(i) + '.log');
            if IOResult = 0 then
                break;
            inc(i)
            end;
        end;
{$ENDIF}
    Rewrite(f);
{$I+}
{$ENDIF}

end;

procedure freeModule;
begin
{$IFDEF DEBUGFILE}
    writeln(f, 'halt at ' + inttostr(GameTicks) + ' ticks. TurnTimeLeft = ' + inttostr(TurnTimeLeft));
    flush(f);
    close(f);
{$IFDEF USE_VIDEO_RECORDING}
    DoneCriticalSection(logMutex);
{$ENDIF}
{$ENDIF}
end;

end.