(*

 * Hedgewars, a worms-like game

 * Copyright (c) 2005 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 uAIActions;

interface

{$INCLUDE options.inc}

const aia_none       = 0;

      aia_Left       = 1;

      aia_Right      = 2;

      aia_Timer      = 3;

      aia_Slot       = 4;

      aia_attack     = 5;

      aia_Up         = 6;

      aia_Down       = 7;

      aia_Weapon     = $80000000;

      aia_WaitX      = $80000001;

      aia_WaitY      = $80000002;

      aia_LookLeft   = $80000003;

      aia_LookRight  = $80000004;

      aim_push       = $80000000;

      aim_release    = $80000001;

      ai_specmask    = $80000000;

type PAction = ^TAction;

     TAction = record

               Action, Param: Longword;

               Time: Longword;

               Next: PAction;

               end;

function AddAction(Action, Param, TimeDelta: Longword): PAction;

procedure FreeActionsList;

function IsActionListEmpty: boolean;

procedure ProcessAction;

implementation

uses uMisc, uConsts, uConsole, uTeams;

const ActionIdToStr: array[0..7] of string[16] = (

{aia_none}           '',

{aia_Left}           'left',

{aia_Right}          'right',

{aia_Timer}          'timer',

{aia_slot}           'slot',

{aia_attack}         'attack',

{aia_Up}             'up',

{aia_Down}           'down'

      );

var ActionList,

    FinAction: PAction;

function AddAction(Action, Param, TimeDelta: Longword): PAction;

begin

New(Result);

TryDo(Result <> nil, errmsgDynamicVar, true);

FillChar(Result^, sizeof(TAction), 0);

Result.Action:= Action;

Result.Param:= Param;

if ActionList = nil then

   begin

   Result.Time:= GameTicks + TimeDelta;

   ActionList:= Result;

   FinAction := Result

   end else

   begin

   Result.Time:= TimeDelta;

   FinAction.Next:= Result;

   FinAction:= Result

   end

end;

procedure DeleteCurrAction;

var t: PAction;

begin

t:= ActionList;

ActionList:= ActionList.Next;

if ActionList = nil then FinAction:= nil

                    else inc(ActionList.Time, t.Time);

Dispose(t)

end;

function IsActionListEmpty: boolean;

begin

Result:= ActionList = nil

end;

procedure FreeActionsList;

begin

while ActionList <> nil do DeleteCurrAction;

end;

procedure SetWeapon(weap: Longword);

var t: integer;

begin

t:= 0;

with CurrentTeam^ do

     with Hedgehogs[CurrHedgehog] do

          while Ammo[CurSlot, CurAmmo].AmmoType <> TAmmotype(weap) do

                begin

                ParseCommand('/slot ' + chr(49 + Ammoz[TAmmoType(weap)].Slot));

                inc(t);

                if t > 10 then OutError('AI: incorrect try to change weapon!', true)

                end

end;

procedure ProcessAction;

var s: shortstring;

begin

if ActionList = nil then exit;

with ActionList^ do

     begin

     if Time > GameTicks then exit;

     if (Action and ai_specmask) <> 0 then

        case Action of

           aia_Weapon: SetWeapon(Param);

            aia_WaitX: with CurrentTeam^ do

                            with Hedgehogs[CurrHedgehog] do

                                 if round(Gear.X) = Param then Time:= GameTicks

                                                          else exit;

            aia_WaitY: with CurrentTeam^ do

                            with Hedgehogs[CurrHedgehog] do

                                 if round(Gear.Y) = Param then Time:= GameTicks

                                                          else exit;

         aia_LookLeft: with CurrentTeam^ do

                            with Hedgehogs[CurrHedgehog] do

                                 if Gear.dX >= 0 then

                                    begin

                                    ParseCommand('+left');

                                    exit

                                    end else ParseCommand('-left');

        aia_LookRight: with CurrentTeam^ do

                            with Hedgehogs[CurrHedgehog] do

                                 if Gear.dX < 0 then

                                    begin

                                    ParseCommand('+right');

                                    exit

                                    end else ParseCommand('-right');

             end else

        begin

        s:= ActionIdToStr[Action];

        if (Param and ai_specmask) <> 0 then

           case Param of

             aim_push: s:= '+' + s;

          aim_release: s:= '-' + s;

             end

          else if Param <> 0 then s:= s + ' ' + inttostr(Param);

        ParseCommand(s)

        end

     end;

DeleteCurrAction

end;

end.