(*

 * Hedgewars, a worms-like game

 * Copyright (c) 2005, 2006 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * Distributed under the terms of the BSD-modified licence:

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * with the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO

 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *)

unit uAI;

interface

{$INCLUDE options.inc}

procedure ProcessBot;

procedure FreeActionsList;

implementation

uses uTeams, uConsts, SDLh, uAIMisc, uGears, uAIAmmoTests, uAIActions, uMisc;

var BestActions: TActions;

    ThinkThread: PSDL_Thread = nil;

    StopThinking: boolean;

procedure FreeActionsList;

begin

if ThinkThread <> nil then

   begin

   StopThinking:= true;

   SDL_WaitThread(ThinkThread, nil);

   ThinkThread:= nil

   end;

BestActions.Count:= 0;

BestActions.Pos:= 0

end;

procedure TestAmmos(var Actions: TActions; Me: PGear);

var Time: Longword;

    Angle, Power, Score: integer;

    i: integer;

    a, aa: TAmmoType;

begin

for i:= 0 to Pred(Targets.Count) do

    if Targets.ar[i].Score >= 0 then

       begin

       a:= Low(TAmmoType);

       aa:= a;

       repeat

        if Assigned(AmmoTests[a]) then

           begin

           Score:= AmmoTests[a](Me, Targets.ar[i].Point, Time, Angle, Power);

           if Actions.Score + Score + Targets.ar[i].Score > BestActions.Score then

              begin

              BestActions:= Actions;

              inc(BestActions.Score, Score + Targets.ar[i].Score);

              AddAction(BestActions, aia_Weapon, Longword(a), 500);

              if Time <> 0 then AddAction(BestActions, aia_Timer, Time div 1000, 400);

              if (Angle > 0) then AddAction(BestActions, aia_LookRight, 0, 200)

              else if (Angle < 0) then AddAction(BestActions, aia_LookLeft, 0, 200);

              Angle:= integer(Me.Angle) - Abs(Angle);

              if Angle > 0 then

                 begin

                 AddAction(BestActions, aia_Up, aim_push, 500);

                 AddAction(BestActions, aia_Up, aim_release, Angle)

                 end else if Angle < 0 then

                 begin

                 AddAction(BestActions, aia_Down, aim_push, 500);

                 AddAction(BestActions, aia_Down, aim_release, -Angle)

                 end;

              AddAction(BestActions, aia_attack, aim_push, 300);

              AddAction(BestActions, aia_attack, aim_release, Power);

              end

           end;

        if a = High(TAmmoType) then a:= Low(TAmmoType)

                               else inc(a)

       until isInMultiShoot or (a = aa) or (CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].AttacksNum > 0)

       end

end;

procedure Walk(Me: PGear);

var Actions: TActions;

    BackMe: TGear;

    Dir, t, avoidt, steps: integer;

begin

Actions.Score:= 0;

Actions.Count:= 0;

Actions.Pos:= 0;

BackMe:= Me^;

if (Me.State and gstAttacked) = 0 then TestAmmos(Actions, Me);

avoidt:= CheckBonuses(Me);

for Dir:= aia_Left to aia_Right do

    begin

    Me.Message:= Dir;

    steps:= 0;

    while HHGo(Me) do

       begin

       inc(steps);

       Actions.Count:= 0;

       AddAction(Actions, Dir, aim_push, 50);

       AddAction(Actions, aia_WaitX, round(Me.X), 0);

       AddAction(Actions, Dir, aim_release, 0);

       t:= CheckBonuses(Me);

       if t < avoidt then break

       else if (t > 0) or (t > avoidt) then

            begin

            BestActions:= Actions;

            exit

            end;

       if ((Me.State and gstAttacked) = 0)

       and ((steps mod 4) = 0) then TestAmmos(Actions, Me);

       if StopThinking then exit;

       end;

    Me^:= BackMe

    end

end;

procedure Think(Me: PGear); cdecl;

var BackMe: TGear;

    StartTicks: Longword;

begin

{$IFDEF DEBUGFILE}AddFileLog('Enter Think Thread');{$ENDIF}

StartTicks:= GameTicks;

ThinkingHH:= Me;

FillTargets;

FillBonuses;

BestActions.Score:= Low(integer);

if Targets.Count > 0 then

   begin

   BackMe:= Me^;

   Walk(@BackMe);

   end;

if StartTicks > GameTicks - 1000 then SDL_Delay(500);

Me.State:= Me.State and not gstHHThinking;

{$IFDEF DEBUGFILE}AddFileLog('Exit Think Thread');{$ENDIF}

ThinkThread:= nil

end;

procedure StartThink(Me: PGear);

begin

Me.State:= Me.State or gstHHThinking;

StopThinking:= false;

ThinkThread:= SDL_CreateThread(@Think, Me)

end;

procedure ProcessBot;

begin

with CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog] do

     if (Gear <> nil)

        and ((Gear.State and gstHHDriven) <> 0)

        and (TurnTimeLeft < 29990)

        and ((Gear.State and gstHHThinking) = 0) then

           if (BestActions.Pos = BestActions.Count) then StartThink(Gear)

                                                    else ProcessAction(BestActions, Gear)

end;

end.