(*

 * Hedgewars, a worms-like game

 * Copyright (c) 2004, 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 uWorld;

interface

uses SDLh, uGears, uConsts;

{$INCLUDE options.inc}

const WorldDx: integer = -512;

      WorldDy: integer = -256;

procedure InitWorld;

procedure DrawWorld(Lag: integer; Surface: PSDL_Surface);

procedure AddCaption(s: string; Color: Longword; Group: TCapGroup);

procedure MoveCamera;

{$IFDEF COUNTTICKS}

var cntTicks: LongWord;

{$ENDIF}

var FollowGear: PGear = nil;

    WindBarWidth: integer = 0;

implementation

uses uStore, uMisc, uTeams, uIO, uConsole;

const RealTicks: Longword = 0;

      Frames: Longword = 0;

      FPS: Longword = 0;

      CountTicks: Longword = 0;

      prevPoint: TPoint = (X: 0; Y: 0);

type TCaptionStr = record

                   Surf: PSDL_Surface;

                   StorePos: Longword;

                   Group: TCapGroup;

                   EndTime: LongWord;

                   end;

var cWaterSprCount: integer;

    Captions: array[0..Pred(cMaxCaptions)] of TCaptionStr;

procedure InitWorld;

begin

cWaterSprCount:= 1 + cScreenWidth div (SpritesData[sprWater].Width);

cScreenEdgesDist:= Min(cScreenWidth div 4, cScreenHeight div 4);

SDL_WarpMouse(cScreenWidth div 2, cScreenHeight div 2);

prevPoint.X:= cScreenWidth div 2;

prevPoint.Y:= cScreenHeight div 2;

WorldDx:=  - 1024 + cScreenWidth div 2;

WorldDy:=  - 512 + cScreenHeight div 2

end;

procedure DrawWorld(Lag: integer; Surface: PSDL_Surface);

var i, t: integer;

    r: TSDL_Rect;

    team: PTeam;

    tdx, tdy: Double;

    procedure DrawRepeated(spr: TSprite; Shift: integer);

    var i, w: integer;

    begin

    w:= SpritesData[spr].Width;

    i:= Shift mod w;

    if i > 0 then dec(i, w);

    repeat

      DrawSprite(spr, i, WorldDy + 1024 - SpritesData[spr].Height, 0, Surface);

      inc(i, w)

    until i > cScreenWidth

    end;

begin

// Sky

inc(RealTicks, Lag);

if WorldDy > 0 then

   begin

   if WorldDy > cScreenHeight then r.h:= cScreenHeight

                              else r.h:= WorldDy;

   r.x:= 0;

   r.y:= 0;

   r.w:= cScreenWidth;

   SDL_FillRect(Surface, @r, cSkyColor)

   end;

// background

DrawRepeated(sprSky, WorldDx * 3 div 8);

DrawRepeated(sprHorizont, WorldDx * 3 div 5);

// Waves

{$WARNINGS OFF}

for i:= -1 to cWaterSprCount do DrawSprite(sprWater,  i * 256  + ((WorldDx + (RealTicks shr 6)      ) and $FF), cWaterLine + WorldDy - 64, 0, Surface);

for i:= -1 to cWaterSprCount do DrawSprite(sprWater,  i * 256  + ((WorldDx - (RealTicks shr 6) + 192) and $FF), cWaterLine + WorldDy - 48, 0, Surface);

{$WARNINGS ON}

DrawLand(WorldDx, WorldDy, Surface);

// Water

r.y:= WorldDy + cWaterLine + 32;

if r.y < cScreenHeight then

   begin

   if r.y < 0 then r.y:= 0;

   r.h:= cScreenHeight - r.y;

   r.x:= 0;

   r.w:= cScreenWidth;

   SDL_FillRect(Surface, @r, cWaterColor)

   end;

DrawGears(Surface);

if CurrentTeam <> nil then

   begin

   team:= TeamsList;

   while team<>nil do

      begin

      for i:= 0 to 7 do

          with team.Hedgehogs[i] do

               if Gear<>nil then

                  if Gear.State = 0 then

                     begin

                     t:= round(Gear.Y) - cHHRadius - 10 + WorldDy;

                     dec(t, HealthTag.h + 2);

                     DrawCentered(round(Gear.X) + WorldDx, t, HealthTag, Surface);

                     dec(t, NameTag.h + 2);

                     DrawCentered(round(Gear.X) + WorldDx, t, NameTag, Surface);

                     dec(t, Team.NameTag.h + 2);

                     DrawCentered(round(Gear.X) + WorldDx, t, Team.NameTag, Surface)

                     end else // Current hedgehog

                     begin

                     if (Gear.State and (gstMoving or gstDrowning or gstFalling)) = 0 then

                        if (Gear.State and gstHHThinking) <> 0 then

                           DrawGear(sQuestion, Round(Gear.X)  - 10 + WorldDx, Round(Gear.Y) - cHHRadius - 34 + WorldDy, Surface)

                        else

                        if ShowCrosshair and ((Gear.State and gstAttacked) = 0) then

                           DrawCaption(Round(Gear.X + hwSign(Gear.dX) * Sin(Gear.Angle*pi/cMaxAngle)*60) + WorldDx,

                                       Round(Gear.Y - Cos(Gear.Angle*pi/cMaxAngle)*60) + WorldDy - 4,

                                       Team.CrossHairRect, Surface)

                     end;

      team:= team.Next

      end;

   end;

// Waves

{$WARNINGS OFF}

for i:= -1 to cWaterSprCount do DrawSprite(sprWater,  i * 256  + ((WorldDx + (RealTicks shr 6) +  64) and $FF), cWaterLine + WorldDy - 32, 0, Surface);

for i:= -1 to cWaterSprCount do DrawSprite(sprWater,  i * 256  + ((WorldDx - (RealTicks shr 6) + 128) and $FF), cWaterLine + WorldDy - 16, 0, Surface);

for i:= -1 to cWaterSprCount do DrawSprite(sprWater,  i * 256  + ((WorldDx + (RealTicks shr 6)      ) and $FF), cWaterLine + WorldDy     , 0, Surface);

{$WARNINGS ON}

// Turn time

if TurnTimeLeft <> 0 then

   begin

   i:= Succ(Pred(TurnTimeLeft) div 1000);

   if i>99 then t:= 112

      else if i>9 then t:= 96

                  else t:= 80;

   DrawSprite(sprFrame, t, cScreenHeight - 48, 1, Surface);

   while i > 0 do

         begin

         dec(t, 32);

         DrawSprite(sprBigDigit, t, cScreenHeight - 48, i mod 10, Surface);

         i:= i div 10

         end;

   DrawSprite(sprFrame, t - 4, cScreenHeight - 48, 0, Surface);

   end;

// Attack bar

if CurrentTeam <> nil then

   case AttackBar of

        1: begin

           r:= StuffPoz[sPowerBar];

           {$WARNINGS OFF}

           r.w:= (CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear.Power * 256) div cPowerDivisor;

           {$WARNINGS ON}

           DrawSpriteFromRect(r, cScreenWidth - 272, cScreenHeight - 48, 16, 0, Surface);

           end;

        2: with CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog] do

                begin

                tdx:= hwSign(Gear.dX) * Sin(Gear.Angle*pi/cMaxAngle);

                tdy:= - Cos(Gear.Angle*pi/cMaxAngle);

                for i:= (Gear.Power * 24) div cPowerDivisor downto 0 do

                    DrawSprite(sprPower, round(Gear.X + WorldDx + tdx * (24 + i * 2)) - 16,

                                         round(Gear.Y + WorldDy + tdy * (24 + i * 2)) - 12,

                                         i, Surface)

                end

        end;

// Target

if TargetPoint.X <> NoPointX then DrawSprite(sprTargetP, TargetPoint.X + WorldDx - 16, TargetPoint.Y + WorldDy - 16, 0, Surface);

// Captions

i:= 0;

while (i < cMaxCaptions) do

    begin

    with Captions[i] do

         if EndTime > 0 then

            DrawCentered(cScreenWidth div 2, 8 + i * (Surf.h + 2) + cConsoleYAdd, Surf, Surface);

    inc(i)

    end;

while (Captions[0].EndTime > 0) and (Captions[0].EndTime <= RealTicks) do

    begin

    SDL_FreeSurface(Captions[0].Surf);

    Captions[0].Surf:= nil;

    for i:= 1 to Pred(cMaxCaptions) do

        Captions[Pred(i)]:= Captions[i];

    Captions[Pred(cMaxCaptions)].EndTime:= 0

    end;

// Teams Healths

team:= TeamsList;

while team <> nil do

      begin

      r.x:= cScreenWidth div 2 - team.NameTag.w - 3;

      r.y:= team.DrawHealthY;

      r.w:= team.NameTag.w;

      r.h:= team.NameTag.h;

      SDL_UpperBlit(team.NameTag, nil, Surface, @r);

      r:= team.HealthRect;

      r.w:= 2 + team.TeamHealth;

      DrawFromStoreRect(cScreenWidth div 2,

                        Team.DrawHealthY,

                        @r, Surface);

      inc(r.x, cTeamHealthWidth + 2);

      r.w:= 3;

      DrawFromStoreRect(cScreenWidth div 2 + team.TeamHealth + 2,

                        Team.DrawHealthY,

                        @r, Surface);

      team:= team.Next

      end;

// Lag alert

if isInLag then DrawSprite(sprLag, 32, 32  + cConsoleYAdd, (RealTicks shr 7) mod 7, Surface);

// Wind bar

DrawGear(sWindBar, cScreenWidth - 180, cScreenHeight - 30, Surface);

if WindBarWidth > 0 then

   begin

   with StuffPoz[sWindR] do

        begin

        {$WARNINGS OFF}

        r.x:= x + 8 - (RealTicks shr 6) mod 8;

        {$WARNINGS ON}

        r.y:= y;

        r.w:= WindBarWidth;

        r.h:= 13;

        end;

   DrawSpriteFromRect(r, cScreenWidth - 103, cScreenHeight - 28, 13, 0, Surface);

   end else

 if WindBarWidth < 0 then

   begin

   with StuffPoz[sWindL] do

        begin

        {$WARNINGS OFF}

        r.x:= x + (WindBarWidth + RealTicks shr 6) mod 8;

        {$WARNINGS ON}

        r.y:= y;

        r.w:= - WindBarWidth;

        r.h:= 13;

        end;

   DrawSpriteFromRect(r, cScreenWidth - 106 + WindBarWidth, cScreenHeight - 28, 13, 0, Surface);

   end;

// Cursor

if isCursorVisible then DrawSprite(sprArrow, CursorPoint.X, CursorPoint.Y, (RealTicks shr 6) mod 8, Surface);

{$IFDEF COUNTTICKS}

DXOutText(10, 10, fnt16, inttostr(cntTicks), Surface);

{$ENDIF}

inc(Frames);

inc(CountTicks, Lag);

if CountTicks >= 1000 then

   begin

   FPS:= Frames;

   Frames:= 0;

   CountTicks:= 0;

   end;

if cShowFPS then DXOutText(cScreenWidth - 50, 10, fnt16, inttostr(FPS) + ' fps', Surface)

end;

procedure AddCaption(s: string; Color: Longword; Group: TCapGroup);

var i, t, m, k: LongWord;

begin

if Group in [capgrpGameState, capgrpNetSay] then WriteLnToConsole(s);

i:= 0;

while (i < cMaxCaptions) and (Captions[i].Group <> Group) do inc(i);

if i < cMaxCaptions then

   begin

   SDL_FreeSurface(Captions[i].Surf);

   while (i < Pred(cMaxCaptions)) do

         begin

         Captions[i]:= Captions[Succ(i)];

         inc(i)

         end;

   Captions[Pred(cMaxCaptions)].EndTime:= 0

   end;

if Captions[Pred(cMaxCaptions)].EndTime > 0 then

   begin

   SDL_FreeSurface(Captions[0].Surf);

   m:= Pred(cMaxCaptions);

   for i:= 1 to m do

       Captions[Pred(i)]:= Captions[i];

   Captions[m].EndTime:= 0

   end else

   begin

   m:= 0;

   while (m < cMaxCaptions)and(Captions[m].EndTime > 0) do inc(m)

   end;

k:= 0;

for i:= 0 to Pred(cMaxCaptions) do

    for t:= 0 to Pred(cMaxCaptions) do

        if (Captions[t].EndTime > 0) and (Captions[t].StorePos = k) then inc(k);

Captions[m].Surf:= RenderString(s, Color, fntBig);

Captions[m].StorePos:= k;

Captions[m].Group:= Group;

Captions[m].EndTime:= RealTicks + 1200

end;

procedure MoveCamera;

const PrevSentPointTime: LongWord = 0;

var s: string[9];

begin

if not (CurrentTeam.ExtDriven and isCursorVisible) then SDL_GetMouseState(@CursorPoint.X, @CursorPoint.Y);

if (FollowGear <> nil) then

   if abs(CursorPoint.X - prevPoint.X) + abs(CursorPoint.Y - prevpoint.Y) > 4 then

      begin

      FollowGear:= nil;

      exit

      end

      else begin

      CursorPoint.x:= (CursorPoint.x * 7 + (round(FollowGear.X + hwSign(FollowGear.dX) * 100) + WorldDx)) div 8;

      CursorPoint.y:= (CursorPoint.y * 7 + (round(FollowGear.Y) + WorldDy)) div 8

      end;

if ((CursorPoint.X = prevPoint.X)and(CursorPoint.Y = prevpoint.Y)) then exit;

if isCursorVisible then

   begin

   if (not CurrentTeam.ExtDriven)and(GameTicks >= PrevSentPointTime + cSendCursorPosTime) then

      begin

      s[0]:= #5;

      s[1]:= 'P';

      PSmallInt(@s[2])^:= CursorPoint.X - WorldDx;

      PSmallInt(@s[4])^:= CursorPoint.Y - WorldDy;

      SendIPC(s);

      PrevSentPointTime:= GameTicks

      end;

   end;

if isCursorVisible or (FollowGear <> nil) then

   begin

   if CursorPoint.X < cScreenEdgesDist then

         begin

         WorldDx:= WorldDx - CursorPoint.X + cScreenEdgesDist;

         CursorPoint.X:= cScreenEdgesDist

         end else

      if CursorPoint.X > cScreenWidth - cScreenEdgesDist then

         begin

         WorldDx:= WorldDx - CursorPoint.X + cScreenWidth - cScreenEdgesDist;

         CursorPoint.X:= cScreenWidth - cScreenEdgesDist

         end;

      if CursorPoint.Y < cScreenEdgesDist then

         begin

         WorldDy:= WorldDy - CursorPoint.Y + cScreenEdgesDist;

         CursorPoint.Y:= cScreenEdgesDist

         end else

      if CursorPoint.Y > cScreenHeight - cScreenEdgesDist then

         begin

         WorldDy:= WorldDy - CursorPoint.Y + cScreenHeight - cScreenEdgesDist;

         CursorPoint.Y:= cScreenHeight - cScreenEdgesDist

         end;

   end else

   begin

      WorldDx:= WorldDx - CursorPoint.X + prevPoint.X;

      WorldDy:= WorldDy - CursorPoint.Y + prevPoint.Y;

      CursorPoint.X:= (cScreenWidth  shr 1);

      CursorPoint.Y:= (cScreenHeight shr 1);

   end;

SDL_WarpMouse(CursorPoint.X, CursorPoint.Y);

prevPoint:= CursorPoint;

if WorldDy < cScreenHeight - cWaterLine - cVisibleWater then WorldDy:= cScreenHeight - cWaterLine - cVisibleWater;

if WorldDy >  2048 then WorldDy:=  2048;

if WorldDx < -2048 then WorldDx:= -2048;

if WorldDx > cScreenWidth then WorldDx:=  cScreenWidth;

end;

initialization

FillChar(Captions, sizeof(Captions), 0)

end.