hedgewars/uAIMisc.pas
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(*
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 * Hedgewars, a worms-like game
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 * Copyright (c) 2005 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * Distributed under the terms of the BSD-modified licence:
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * with the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. The name of the author may not be used to endorse or promote products
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 *    derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *)
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unit uAIMisc;
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interface
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uses uConsts, uGears, SDLh;
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{$INCLUDE options.inc}
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type TTargets = record
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                Count: integer;
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                ar: array[0..cMaxHHIndex*5] of TPoint;
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                end;
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procedure FillTargets(var Targets: TTargets);
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function DxDy2Angle(const _dY, _dX: Extended): integer;
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function TestColl(x, y, r: integer): boolean;
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function NoMyHHNear(x, y, r: integer): boolean;
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function HHGo(Gear: PGear): boolean;
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implementation
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uses uTeams, uStore, uMisc, uLand, uCollisions;
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procedure FillTargets(var Targets: TTargets);
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var t: PTeam;
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    i, k: integer;
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    r: integer;
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    MaxHealth: integer;
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    score: array[0..cMaxHHIndex*5] of integer;
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  procedure qSort(iLo, iHi: Integer);
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  var
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    Lo, Hi, Mid, T: Integer;
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    P: TPoint;
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  begin
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    Lo := iLo;
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    Hi := iHi;
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    Mid := score[(Lo + Hi) div 2];
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    repeat
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      while score[Lo] > Mid do Inc(Lo);
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      while score[Hi] < Mid do Dec(Hi);
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      if Lo <= Hi then
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      begin
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        T := score[Lo];
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        score[Lo] := score[Hi];
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        score[Hi] := T;
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        P := Targets.ar[Lo];
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        Targets.ar[Lo] := Targets.ar[Hi];
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        Targets.ar[Hi] := P;
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        Inc(Lo);
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        Dec(Hi)
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      end;
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    until Lo > Hi;
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    if Hi > iLo then qSort(iLo, Hi);
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    if Lo < iHi then qSort(Lo, iHi);
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  end;
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begin
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Targets.Count:= 0;
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t:= TeamsList;
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MaxHealth:= 0;
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while t <> nil do
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      begin
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      if t <> CurrentTeam then
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         for i:= 0 to cMaxHHIndex do
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             if t.Hedgehogs[i].Gear <> nil then
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                begin
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                with Targets.ar[Targets.Count], t.Hedgehogs[i] do
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                     begin
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                     X:= Round(Gear.X);
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                     Y:= Round(Gear.Y);
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                     if integer(Gear.Health) > MaxHealth then MaxHealth:= Gear.Health;
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                     score[Targets.Count]:= random(3) - integer(Gear.Health div 5)
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                     end;
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                inc(Targets.Count)
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                end;
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      t:= t.Next
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      end;
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// âûñòàâëÿåì îöåíêó çà ïîïàäàíèå â ¸æèêà:
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//  - åñëè åñòü ñîñåäè-ïðîòèâíèêè, òî îöåíêà óâåëè÷èâàåòñÿ
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//  - ÷åì ìåíüøå õåëñà ó ¸æèêà, òåì áîëüøå îöåíêà (êîä ñì. âûøå)
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//  - åñëè åñòü ñîñåäè-"ñâîè", òî óìåíüøàåòñÿ
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with Targets do
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     for i:= 0 to Targets.Count - 1 do
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         begin
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         for k:= Succ(i) to Pred(Targets.Count) do
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             begin
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             r:= 100 - round(sqrt(sqr(ar[i].X - ar[k].X) + sqr(ar[i].Y - ar[k].Y)));
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             if r > 0 then
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                begin
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                inc(score[i], r);
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                inc(score[k], r)
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                end;
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             end;
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         for k:= 0 to cMaxHHIndex do
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             with CurrentTeam.Hedgehogs[k] do
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                  if Gear <> nil then
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                     begin
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                     r:= 100 - round(sqrt(sqr(ar[i].X - round(Gear.X)) + sqr(ar[i].Y - round(Gear.Y))));
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                     if r > 0 then dec(score[i], (r * 3) div 2 + MaxHealth + 5 - integer(Gear.Health));
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                     end;
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         end;
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// ñîðòèðóåì ïî óáûâàíèþ ñîãëàñíî îöåíêå
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if Targets.Count >= 2 then qSort(0, Pred(Targets.Count));
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end;
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function DxDy2Angle(const _dY, _dX: Extended): integer;
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const piDIVMaxAngle: Extended = pi/cMaxAngle;
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asm
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        fld     _dY
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        fld     _dX
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        fpatan
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        fld     piDIVMaxAngle
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        fdiv
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        sub     esp, 4
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        fistp   dword ptr [esp]
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        pop     eax
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end;
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function TestColl(x, y, r: integer): boolean;
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begin
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Result:=(((x-r) and $FFFFF800) = 0)and(((y-r) and $FFFFFC00) = 0) and (Land[y-r, x-r] <> 0);
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if Result then exit;
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Result:=(((x-r) and $FFFFF800) = 0)and(((y+r) and $FFFFFC00) = 0) and (Land[y+r, x-r] <> 0);
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if Result then exit;
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Result:=(((x+r) and $FFFFF800) = 0)and(((y-r) and $FFFFFC00) = 0) and (Land[y-r, x+r] <> 0);
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if Result then exit;
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Result:=(((x+r) and $FFFFF800) = 0)and(((y+r) and $FFFFFC00) = 0) and (Land[y+r, x+r] <> 0);
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end;
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   159
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function NoMyHHNear(x, y, r: integer): boolean;
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var i: integer;
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begin
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i:= 0;
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r:= sqr(r);
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Result:= true;
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repeat
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  with CurrentTeam.Hedgehogs[i] do
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       if Gear <> nil then
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          if sqr(Gear.X - x) + sqr(Gear.Y - y) <= r then
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             begin
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             Result:= false;
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             exit
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             end;
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inc(i)
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until i > cMaxHHIndex
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end;
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   177
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function HHGo(Gear: PGear): boolean; // false åñëè íåëüçÿ äâèãàòüñÿ
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var pX, pY: integer;
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begin
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Result:= false;
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repeat
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pX:= round(Gear.X);
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pY:= round(Gear.Y);
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if pY + cHHHalfHeight >= cWaterLine then exit;
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if (Gear.State and gstFalling) <> 0 then
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   begin
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   Gear.dY:= Gear.dY + cGravity;
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   if Gear.dY > 0.35 then exit;
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   Gear.Y:= Gear.Y + Gear.dY;
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   if HHTestCollisionYwithGear(Gear, 1) then
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      begin
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      Gear.State:= Gear.State and not (gstFalling or gstHHJumping);
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      Gear.dY:= 0
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      end;
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   continue
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   end;
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   {if ((Gear.Message and gm_LJump )<>0) then
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      begin
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      Gear.Message:= 0;
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      if not HHTestCollisionYwithGear(Gear, -1) then
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         if not TestCollisionXwithXYShift(Gear, 0, -2, Sign(Gear.dX)) then Gear.Y:= Gear.Y - 2 else
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         if not TestCollisionXwithXYShift(Gear, 0, -1, Sign(Gear.dX)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithGear(Gear, Sign(Gear.dX))
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         or   HHTestCollisionYwithGear(Gear, -1)) then
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         begin
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         Gear.dY:= -0.15;
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         Gear.dX:= Sign(Gear.dX) * 0.15;
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         Gear.State:= Gear.State or gstFalling or gstHHJumping;
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         exit
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         end;
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      end;}
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   if (Gear.Message and gm_Left  )<>0 then Gear.dX:= -1.0 else
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   if (Gear.Message and gm_Right )<>0 then Gear.dX:=  1.0 else exit;
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   if TestCollisionXwithGear(Gear, Sign(Gear.dX)) then
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      begin
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      if not (TestCollisionXwithXYShift(Gear, 0, -6, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithXYShift(Gear, 0, -5, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithXYShift(Gear, 0, -4, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithXYShift(Gear, 0, -3, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithXYShift(Gear, 0, -2, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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      if not (TestCollisionXwithXYShift(Gear, 0, -1, Sign(Gear.dX))
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         or HHTestCollisionYwithGear(Gear, -1)) then Gear.Y:= Gear.Y - 1;
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   229
      end;
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   230
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   if not TestCollisionXwithGear(Gear, Sign(Gear.dX)) then Gear.X:= Gear.X + Gear.dX;
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   232
   if not HHTestCollisionYwithGear(Gear, 1) then
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   begin
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   Gear.Y:= Gear.Y + 1;
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   235
   if not HHTestCollisionYwithGear(Gear, 1) then
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   236
   begin
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   Gear.Y:= Gear.Y + 1;
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   238
   if not HHTestCollisionYwithGear(Gear, 1) then
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   239
   begin
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   Gear.Y:= Gear.Y + 1;
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   241
   if not HHTestCollisionYwithGear(Gear, 1) then
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   242
   begin
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   Gear.Y:= Gear.Y + 1;
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   244
   if not HHTestCollisionYwithGear(Gear, 1) then
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   245
   begin
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   Gear.Y:= Gear.Y + 1;
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   247
   if not HHTestCollisionYwithGear(Gear, 1) then
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   248
   begin
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   Gear.Y:= Gear.Y + 1;
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   250
   if not HHTestCollisionYwithGear(Gear, 1) then
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      begin
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      Gear.Y:= Gear.Y - 6;
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      Gear.dY:= 0;
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      Gear.dX:= 0.0000001 * Sign(Gear.dX);
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      Gear.State:= Gear.State or gstFalling
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   256
      end
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   257
   end
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   258
   end
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   259
   end
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   end
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   261
   end
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   262
   end;
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   263
if (pX <> round(Gear.X))and ((Gear.State and gstFalling) = 0) then
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   264
   begin
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   265
   Result:= true;
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   266
   exit
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   267
   end;
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until (pX = round(Gear.X)) and (pY = round(Gear.Y)) and ((Gear.State and gstFalling) = 0);
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end;
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   270
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end.