(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2010 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 uWorld;

interface

uses SDLh, uGears, uConsts, uFloat, uRandom;

var FollowGear: PGear;

    WindBarWidth: LongInt;

    bShowAmmoMenu: boolean;

    bSelected: boolean;

    bShowFinger: boolean;

    Frames: Longword;

    WaterColor, DeepWaterColor: TSDL_Color;

    WorldDx: LongInt;

    WorldDy: LongInt;

    SkyOffset: LongInt;

    HorizontOffset: LongInt;

{$IFDEF COUNTTICKS}

    cntTicks: LongWord;

{$ENDIF}

    wScreen: LongInt;

    hScreen: LongInt;

procedure initModule;

procedure freeModule;

procedure InitWorld;

procedure DrawWorld(Lag: LongInt);

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

procedure ShowMission(caption, subcaption, text: ansistring; icon, time : LongInt);

procedure HideMission;

procedure ShakeCamera(amount: LongWord);

implementation

uses    uStore, uMisc, uTeams, uIO, uKeys, uLocale, uSound, uAmmos, uVisualGears, uChat, uLandTexture, uLand, GLunit;

type TCaptionStr = record

                   Tex: PTexture;

                   EndTime: LongWord;

                   end;

var cWaveWidth, cWaveHeight: LongInt;

    Captions: array[TCapGroup] of TCaptionStr;

    AMxShift, SlotsNum: LongInt;

    tmpSurface: PSDL_Surface;

    fpsTexture: PTexture;

    timeTexture: PTexture;

    FPS: Longword;

    CountTicks: Longword;

    SoundTimerTicks: Longword;

    prevPoint: TPoint;

    amSel: TAmmoType = amNothing;

    missionTex: PTexture;

    missionTimer: LongInt;

procedure InitWorld;

var i, t: LongInt;

    cp: PClan;

    g: ansistring;

    // helper functions to create the goal/game mode string

    function AddGoal(s: ansistring; gf: longword; si: TGoalStrId; i: LongInt): ansistring;

    var t: ansistring;

    begin

        if (GameFlags and gf) <> 0 then

            begin

            t:= inttostr(i);

            s:= s + format(trgoal[si], t) + '|'

            end;

        AddGoal:= s;

    end;

    function AddGoal(s: ansistring; gf: longword; si: TGoalStrId): ansistring;

    begin

        if (GameFlags and gf) <> 0 then

            s:= s + trgoal[si] + '|';

        AddGoal:= s;

    end;

begin

    missionTimer:= 0;

    // initialized here because when initModule is called cScreenWidth/Height are not yet set

    if (uWorld.wScreen = 0) and (uWorld.hScreen = 0) then

    begin

        uWorld.wScreen:= cScreenWidth; 

        uWorld.hScreen:= cScreenHeight;

    end;

if (GameFlags and gfRandomOrder) <> 0 then  // shuffle them up a bit

   begin

   for i:= 0 to ClansCount * 4 do

      begin

      t:= GetRandom(ClansCount);

      if t <> 0 then

         begin

         cp:= ClansArray[0];

         ClansArray[0]:= ClansArray[t];

         ClansArray[t]:= cp;

         ClansArray[t]^.ClanIndex:= t;

         ClansArray[0]^.ClanIndex:= 0;

         if (LocalClan = t) then LocalClan:= 0

         else if (LocalClan = 0) then LocalClan:= t

         end;

      end;

   CurrentTeam:= ClansArray[0]^.Teams[0];

   end;

// if special game flags/settings are changed, add them to the game mode notice window and then show it

g:= ''; // no text/things to note yet

// check different game flags (goals/game modes first for now)

g:= AddGoal(g, gfKing, gidKing); // king?

// other important flags

g:= AddGoal(g, gfForts, gidForts); // forts?

g:= AddGoal(g, gfLowGravity, gidLowGravity); // low gravity?

g:= AddGoal(g, gfInvulnerable, gidInvulnerable); // invulnerability?

g:= AddGoal(g, gfVampiric, gidVampiric); // vampirism?

g:= AddGoal(g, gfKarma, gidKarma); // karma?

g:= AddGoal(g, gfPlaceHog, gidPlaceHog); // placement?

g:= AddGoal(g, gfArtillery, gidArtillery); // artillery?

g:= AddGoal(g, gfSolidLand, gidSolidLand); // solid land?

g:= AddGoal(g, gfSharedAmmo, gidSharedAmmo); // shared ammo?

// modified damage modificator?

if cDamagePercent <> 100 then

    g:= AddGoal(g, gfAny, gidDamageModifier, cDamagePercent);

// fade in

ScreenFade:= sfFromBlack;

ScreenFadeValue:= sfMax;

ScreenFadeSpeed:= 1;

// modified mine timers?

if cMinesTime <> 3000 then

    begin

    if cMinesTime = 0 then

        g:= AddGoal(g, gfMines, gidNoMineTimer)

    else if cMinesTime < 0 then

        g:= AddGoal(g, gfMines, gidRandomMineTimer)

    else

        g:= AddGoal(g, gfMines, gidMineTimer, cMinesTime div 1000);

    end;

// if the string has been set, show it for (default timeframe) seconds

if g <> '' then ShowMission(trgoal[gidCaption], trgoal[gidSubCaption], g, 1, 0);

cWaveWidth:= SpritesData[sprWater].Width;

//cWaveHeight:= SpritesData[sprWater].Height;

cWaveHeight:= 32;

cGearScrEdgesDist:= Min(cScreenWidth div 2 - 100, cScreenHeight div 2 - 50);

SDL_WarpMouse(cScreenWidth div 2, cScreenHeight div 2);

prevPoint.X:= 0;

prevPoint.Y:= cScreenHeight div 2;

WorldDx:=  - (LAND_WIDTH div 2) + cScreenWidth div 2;

WorldDy:=  - (LAND_HEIGHT - (playHeight div 2)) + (cScreenHeight div 2);

AMxShift:= 210;

SkyOffset:= 0;

HorizontOffset:= 0;

end;

procedure ShowAmmoMenu;

const MENUSPEED = 15;

{$IFDEF IPHONEOS}

const MENUWIDTH = 210;

{$ELSE}

const MENUWIDTH = 240;

{$ENDIF}

var x, y, i, t, l, g: LongInt;

    Slot, Pos: LongInt;

    Ammo: PHHAmmo;

begin

    if (TurnTimeLeft = 0) or (not CurrentTeam^.ExtDriven and (((CurAmmoGear = nil) or 

       ((CurAmmoGear^.Ammo^.Propz and ammoprop_AltAttack) = 0)) and hideAmmoMenu)) then

            bShowAmmoMenu:= false;

    if bShowAmmoMenu then

    begin

        FollowGear:= nil;

        if AMxShift = MENUWIDTH then 

            prevPoint.X:= 0;

        if cReducedQuality then

            AMxShift:= 0

        else

            if AMxShift > 0 then 

                dec(AMxShift, MENUSPEED);

    end

    else

    begin

        if AMxShift = 0 then

        begin

            CursorPoint.X:= cScreenWidth shr 1;

            CursorPoint.Y:= cScreenHeight shr 1;

            prevPoint:= CursorPoint;

            SDL_WarpMouse(CursorPoint.X  + cScreenWidth div 2, cScreenHeight - CursorPoint.Y)

        end;

        if cReducedQuality then

            AMxShift:= MENUWIDTH

    else

        if AMxShift < MENUWIDTH then

            inc(AMxShift, MENUSPEED);

    end;

    Ammo:= nil;

    if (CurrentTeam <> nil) and (CurrentHedgehog <> nil) and (not CurrentTeam^.ExtDriven) and

       (CurrentHedgehog^.BotLevel = 0) then

        Ammo:= CurrentHedgehog^.Ammo

    else

        if (LocalAmmo <> -1) then

            Ammo:= GetAmmoByNum(LocalAmmo);

        Slot:= 0;

        Pos:= -1;

        if Ammo = nil then

        begin

            bShowAmmoMenu:= false;

            exit

        end;

        SlotsNum:= 0;

        x:= (cScreenWidth shr 1) - MENUWIDTH + AMxShift;

        y:= cScreenHeight - 40;

{$IFDEF IPHONEOS}

        dec(y);

        DrawSprite(sprAMBordersIPhone, x, y, 0);

        dec(y);

        DrawSprite(sprAMBordersIPhone, x, y, 1);

        dec(y, 33);

        DrawSprite(sprAMSlotNameIPhone, x, y, 0);

{$ELSE}

        dec(y);

        DrawSprite(sprAMBorders, x, y, 0);

        dec(y);

        DrawSprite(sprAMBorders, x, y, 1);

        dec(y, 33);

        DrawSprite(sprAMSlotName, x, y, 0);

{$ENDIF}

        for i:= cMaxSlotIndex downto 0 do

            if ((i = 0) and (Ammo^[i, 1].Count > 0)) or ((i <> 0) and (Ammo^[i, 0].Count > 0)) then

            begin

                if (cScreenHeight - CursorPoint.Y >= y - 33) and (cScreenHeight - CursorPoint.Y < y) then 

                    Slot:= i;

                dec(y, 33);

                inc(SlotsNum);

{$IFDEF IPHONEOS}

                DrawSprite(sprAMSlotIPhone, x, y, 0);

                g:= -1;

{$ELSE}

                DrawSprite(sprAMSlot, x, y, 0);

                DrawSprite(sprAMSlotKeys, x + 2, y + 1, i);

                g:= 0;

{$ENDIF}

                t:= 0;

                while (t <= cMaxSlotAmmoIndex) and (Ammo^[i, t].Count > 0) do

                begin

                    if (Ammo^[i, t].AmmoType <> amNothing) then

                    begin

                        l:= Ammoz[Ammo^[i, t].AmmoType].SkipTurns - CurrentTeam^.Clan^.TurnNumber;

                        if l >= 0 then

                        begin

                            DrawSprite(sprAMAmmosBW, x + g * 33 + 35, y + 1, LongInt(Ammo^[i, t].AmmoType)-1);

                            if l < 100 then

                                DrawSprite(sprTurnsLeft, x + g * 33 + 51, y + 17, l);

                        end

                        else

                            DrawSprite(sprAMAmmos, x + g * 33 + 35, y + 1, LongInt(Ammo^[i, t].AmmoType)-1);

                        if (Slot = i) and (CursorPoint.X >= x + g * 33 + 35) and (CursorPoint.X < x + g * 33 + 68) then

                        begin

                            if (l < 0) then 

                                DrawSprite(sprAMSelection, x + g * 33 + 35, y + 1, 0);

                            Pos:= t;

                        end;

                        inc(g);

                    end;

                    inc(t);

                end;

            end;

    dec(y, 1);

{$IFDEF IPHONEOS}

    DrawSprite(sprAMBordersIPhone, x, y, 0);

{$ELSE}

    DrawSprite(sprAMBorders, x, y, 0);

{$ENDIF}

    if (Pos >= 0) then

    begin

        if (Ammo^[Slot, Pos].Count > 0) and (Ammo^[Slot, Pos].AmmoType <> amNothing) then

            if (amSel <> Ammo^[Slot, Pos].AmmoType) or (WeaponTooltipTex = nil) then

            begin

                amSel:= Ammo^[Slot, Pos].AmmoType;

                RenderWeaponTooltip(amSel)

            end;

            DrawTexture(cScreenWidth div 2 - (MENUWIDTH - 10) + AMxShift, cScreenHeight - 68, Ammoz[Ammo^[Slot, Pos].AmmoType].NameTex);

            if Ammo^[Slot, Pos].Count < AMMO_INFINITE then

                DrawTexture(cScreenWidth div 2 + AMxShift - 35, cScreenHeight - 68, CountTexz[Ammo^[Slot, Pos].Count]);

            if bSelected and (Ammoz[Ammo^[Slot, Pos].AmmoType].SkipTurns - CurrentTeam^.Clan^.TurnNumber < 0) then

            begin

                bShowAmmoMenu:= false;

                SetWeapon(Ammo^[Slot, Pos].AmmoType);

                bSelected:= false;

                FreeWeaponTooltip;

                exit();

            end;

    end

    else

        FreeWeaponTooltip;

    if (WeaponTooltipTex <> nil) and (AMxShift = 0) then

        ShowWeaponTooltip(x - WeaponTooltipTex^.w - 3, min(y, cScreenHeight - WeaponTooltipTex^.h - 40));

    bSelected:= false;

    if AMxShift = 0 then 

        DrawSprite(sprArrow, CursorPoint.X, cScreenHeight - CursorPoint.Y, (RealTicks shr 6) mod 8)

end;

procedure MoveCamera; forward;

procedure DrawWater(Alpha: byte; OffsetY: LongInt);

var VertexBuffer: array [0..3] of TVertex2f;

    r: TSDL_Rect;

    lw, lh: GLfloat;

begin

    WaterColorArray[0].a := Alpha;

    WaterColorArray[1].a := Alpha;

    WaterColorArray[2].a := Alpha;

    WaterColorArray[3].a := Alpha;

    lw:= wScreen / cScaleFactor;

    lh:= trunc(hScreen / cScaleFactor) + hScreen div 2 + 16;

    // Water

    r.y:= OffsetY + WorldDy + cWaterLine;

    if WorldDy < trunc(hScreen / cScaleFactor) + hScreen div 2 - cWaterLine then

    begin

        if r.y < 0 then

            r.y:= 0;

        glDisable(GL_TEXTURE_2D);

        VertexBuffer[0].X:= -lw;

        VertexBuffer[0].Y:= r.y;

        VertexBuffer[1].X:= lw;

        VertexBuffer[1].Y:= r.y;

        VertexBuffer[2].X:= lw;

        VertexBuffer[2].Y:= lh;

        VertexBuffer[3].X:= -lw;

        VertexBuffer[3].Y:= lh;

        glEnableClientState (GL_COLOR_ARRAY);

        glColorPointer(4, GL_UNSIGNED_BYTE, 0, @WaterColorArray[0]);

        glEnableClientState(GL_VERTEX_ARRAY);

        glVertexPointer(2, GL_FLOAT, 0, @VertexBuffer[0]);

        glDrawArrays(GL_TRIANGLE_FAN, 0, Length(VertexBuffer));

        glDisableClientState(GL_VERTEX_ARRAY);

        glDisableClientState(GL_COLOR_ARRAY);

        glColor4ub($FF, $FF, $FF, $FF); // must not be Tint() as color array seems to stay active and color reset is required

        glEnable(GL_TEXTURE_2D);

    end;

end;

procedure DrawWaves(Dir, dX, dY: LongInt; tnt: Byte);

var VertexBuffer, TextureBuffer: array [0..3] of TVertex2f;

    lw, waves, shift: GLfloat;

begin

lw:= wScreen / cScaleFactor;

waves:= lw * 2 / cWaveWidth;

Tint(LongInt(tnt) * WaterColorArray[2].r div 255 + 255 - tnt,

     LongInt(tnt) * WaterColorArray[2].g div 255 + 255 - tnt,

     LongInt(tnt) * WaterColorArray[2].b div 255 + 255 - tnt,

     255

);

glBindTexture(GL_TEXTURE_2D, SpritesData[sprWater].Texture^.id);

VertexBuffer[0].X:= -lw;

VertexBuffer[0].Y:= cWaterLine + WorldDy + dY;

VertexBuffer[1].X:= lw;

VertexBuffer[1].Y:= VertexBuffer[0].Y;

VertexBuffer[2].X:= lw;

VertexBuffer[2].Y:= VertexBuffer[0].Y + SpritesData[sprWater].Height;

VertexBuffer[3].X:= -lw;

VertexBuffer[3].Y:= VertexBuffer[2].Y;

shift:= - lw / cWaveWidth;

TextureBuffer[0].X:= shift + (( - WorldDx + LongInt(RealTicks shr 6) * Dir + dX) mod cWaveWidth) / (cWaveWidth - 1);

TextureBuffer[0].Y:= 0;

TextureBuffer[1].X:= TextureBuffer[0].X + waves;

TextureBuffer[1].Y:= TextureBuffer[0].Y;

TextureBuffer[2].X:= TextureBuffer[1].X;

TextureBuffer[2].Y:= SpritesData[sprWater].Texture^.ry;

TextureBuffer[3].X:= TextureBuffer[0].X;

TextureBuffer[3].Y:= TextureBuffer[2].Y;

glEnableClientState(GL_VERTEX_ARRAY);

glEnableClientState(GL_TEXTURE_COORD_ARRAY);

glVertexPointer(2, GL_FLOAT, 0, @VertexBuffer[0]);

glTexCoordPointer(2, GL_FLOAT, 0, @TextureBuffer[0]);

glDrawArrays(GL_TRIANGLE_FAN, 0, Length(VertexBuffer));

glDisableClientState(GL_TEXTURE_COORD_ARRAY);

glDisableClientState(GL_VERTEX_ARRAY);

Tint($FF, $FF, $FF, $FF);

{for i:= -1 to cWaterSprCount do

    DrawSprite(sprWater,

        i * cWaveWidth + ((WorldDx + (RealTicks shr 6) * Dir + dX) mod cWaveWidth) - (cScreenWidth div 2),

        cWaterLine + WorldDy + dY,

        0)}

end;

procedure DrawRepeated(spr, sprL, sprR: TSprite; Shift, OffsetY: LongInt);

var i, w, sw: LongInt;

begin

    sw:= round(cScreenWidth / cScaleFactor);

    if (SpritesData[sprL].Texture = nil) or (SpritesData[sprR].Texture = nil) then

    begin

        w:= SpritesData[spr].Width;

        i:= Shift mod w;

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

        dec(i, w * (sw div w + 1));

        repeat

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

            inc(i, w)

        until i > sw

    end

    else

    begin

        w:= SpritesData[spr].Width;

        dec(Shift, w div 2);

        DrawSprite(spr, Shift, WorldDy + LAND_HEIGHT + OffsetY - SpritesData[spr].Height, 0);

        i:= Shift - SpritesData[sprL].Width;

        while i >= -sw - SpritesData[sprL].Width do

        begin

            DrawSprite(sprL, i, WorldDy + LAND_HEIGHT + OffsetY - SpritesData[sprL].Height, 0);

            dec(i, SpritesData[sprL].Width);

        end;

        i:= Shift + w;

        while i <= sw do

        begin

            DrawSprite(sprR, i, WorldDy + LAND_HEIGHT + OffsetY - SpritesData[sprR].Height, 0);

            inc(i, SpritesData[sprR].Width)

        end

    end

end;

procedure DrawWorld(Lag: LongInt);

var i, t: LongInt;

    r: TSDL_Rect;

    tdx, tdy: Double;

    grp: TCapGroup;

    s: string[15];