(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2009 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

 *)

unit uWorld;

interface

uses SDLh, uGears, uConsts, uFloat;

{$INCLUDE options.inc}

const WorldDx: LongInt = -512;

      WorldDy: LongInt = -256;

procedure InitWorld;

procedure DrawWorld(Lag: LongInt);

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

{$IFDEF COUNTTICKS}

var cntTicks: LongWord;

{$ENDIF}

var FollowGear: PGear = nil;

	WindBarWidth: LongInt = 0;

       	bShowAmmoMenu: boolean = false;

	bSelected: boolean = false;

	bShowFinger: boolean = false;

	Frames: Longword = 0;

	WaterColor, DeepWaterColor: TSDL_Color;

implementation

uses uStore, uMisc, uTeams, uIO, uConsole, uKeys, uLocale, uSound,

{$IFDEF GLES11}

	gles11,

{$ELSE}

	GL,

{$ENDIF}

     uAmmos, uVisualGears, uChat, uLandTexture, uLand;

const FPS: Longword = 0;

      CountTicks: Longword = 0;

      SoundTimerTicks: Longword = 0;

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

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 = nil;

procedure InitWorld;

begin

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

end;

procedure ShowAmmoMenu;

const MENUSPEED = 15;

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

    Slot, Pos: LongInt;

begin

if (TurnTimeLeft = 0) or (((CurAmmoGear = nil) or ((CurAmmoGear^.Ammo^.Propz and ammoprop_AltAttack) = 0)) and KbdKeyPressed) then bShowAmmoMenu:= false;

if bShowAmmoMenu then

   begin

   FollowGear:= nil;

   if AMxShift = 210 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 div 2;

      CursorPoint.Y:= cScreenHeight div 2;

      prevPoint:= CursorPoint;

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

      end;

   if cReducedQuality then

       AMxShift:= 210

   else

       if AMxShift < 210 then inc(AMxShift, MENUSPEED);

   end;

if CurrentTeam = nil then exit;

Slot:= 0;

Pos:= -1;

with CurrentHedgehog^ do

	begin

	if Ammo = nil then exit;

	SlotsNum:= 0;

	x:= cScreenWidth div 2 - 210 + AMxShift;

	y:= cScreenHeight - 40;

	dec(y);

	DrawSprite(sprAMBorders, x, y, 0);

	dec(y);

	DrawSprite(sprAMBorders, x, y, 1);

	dec(y, 33);

	DrawSprite(sprAMSlotName, x, y, 0);

	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);

			DrawSprite(sprAMSlot, x, y, 0);

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

			t:= 0;

            g:= 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);

						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);

	DrawSprite(sprAMBorders, x, y, 0);

	if (Pos >= 0) then

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

		begin

		DrawTexture(cScreenWidth div 2 - 200 + 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;

			exit

			end;

		end;

	end;

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);

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:= cScreenWidth / cScaleFactor;

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

// Water

r.y:= WorldDy + cWaterLine;

if WorldDy < trunc(cScreenHeight / cScaleFactor) + cScreenHeight 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);

	glColor4f(1, 1, 1, 1); // disable coloring

	glEnable(GL_TEXTURE_2D)

	end

end;

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

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

	lw, waves, shift: GLfloat;

begin

lw:= cScreenWidth / cScaleFactor;

waves:= lw * 2 / cWaveWidth;

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 + (RealTicks shr 6) * Dir + dX) mod cWaveWidth) / (cWaveWidth - 1);

TextureBuffer[0].Y:= 0;

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

TextureBuffer[1].Y:= 0;

TextureBuffer[2].X:= TextureBuffer[0].X + waves;

TextureBuffer[2].Y:= 1;

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

TextureBuffer[3].Y:= 1;

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);

{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 DrawWorld(Lag: LongInt);

var i, t: LongInt;

    r: TSDL_Rect;

    tdx, tdy: Double;

    grp: TCapGroup;

    s: string[15];

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

    var i, w, sw: LongInt;

    begin

    sw:= round(cScreenWidth / cScaleFactor);

    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 - SpritesData[spr].Height, 0);

      inc(i, w)

    until i > sw

    end;

begin

if ZoomValue < zoom then

	begin

	zoom:= zoom - 0.002 * Lag;

	if ZoomValue > zoom then zoom:= ZoomValue

	end else

if ZoomValue > zoom then

	begin

	zoom:= zoom + 0.002 * Lag;

	if ZoomValue < zoom then zoom:= ZoomValue

	end;

// Sky

glClear(GL_COLOR_BUFFER_BIT);

glEnable(GL_BLEND);

glEnable(GL_TEXTURE_2D);

//glPushMatrix;

//glScalef(1.0, 1.0, 1.0);

if not isPaused then MoveCamera;

if not cReducedQuality then

    begin

    // background

    DrawRepeated(sprSky, WorldDx * 3 div 8);

    DrawRepeated(sprHorizont, WorldDx * 3 div 5);

    DrawVisualGears(0);

    end;

// Waves

DrawWaves( 1,  0, - (cWaveHeight * 2));

DrawWaves(-1, 100, - (cWaveHeight + cWaveHeight div 2));

DrawLand(WorldDx, WorldDy);

DrawWater(255);

// Attack bar

if CurrentTeam <> nil then

	case AttackBar of

(*        1: begin

		r:= StuffPoz[sPowerBar];

		{$WARNINGS OFF}

		r.w:= (CurrentHedgehog^.Gear^.Power * 256) div cPowerDivisor;

		{$WARNINGS ON}

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

		end;*)

		2: with CurrentHedgehog^ 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,

							hwRound(Gear^.X) + system.round(WorldDx + tdx * (24 + i * 2)) - 16,

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

							i)

				end

		end;

DrawGears;

DrawVisualGears(1);

DrawWater(cWaterOpacity);

// Waves

DrawWaves( 1, 25, - cWaveHeight);

DrawWaves(-1, 50, - (cWaveHeight div 2));

DrawWaves( 1, 75, 0);

{$WARNINGS OFF}

// Target

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

{$WARNINGS ON}

SetScale(2.0);

// 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, -cScreenWidth div 2 + t, cScreenHeight - 48, 1);

   while i > 0 do

         begin

         dec(t, 32);

         DrawSprite(sprBigDigit, -cScreenWidth div 2 + t, cScreenHeight - 48, i mod 10);

         i:= i div 10

         end;

   DrawSprite(sprFrame, -cScreenWidth div 2 + t - 4, cScreenHeight - 48, 0);

   end;

// Captions

i:= 8;

for grp:= Low(TCapGroup) to High(TCapGroup) do

    with Captions[grp] do

         if Tex <> nil then

            begin

            DrawCentered(0, i, Tex);

            inc(i, Tex^.h + 2);

            if EndTime <= RealTicks then

               begin

               FreeTexture(Tex);

               Tex:= nil;

               EndTime:= 0

               end

            end;

// Teams Healths

for t:= 0 to Pred(TeamsCount) do

   with TeamsArray[t]^ do

      begin

      DrawTexture(- NameTagTex^.w - 3, cScreenHeight + DrawHealthY, NameTagTex);

      r.x:= 0;

      r.y:= 0;

      r.w:= 2 + TeamHealthBarWidth;

      r.h:= HealthTex^.h;

      DrawFromRect(0, cScreenHeight + DrawHealthY, @r, HealthTex);

      inc(r.x, cTeamHealthWidth + 2);

      r.w:= 3;

      DrawFromRect(TeamHealthBarWidth + 2, cScreenHeight + DrawHealthY, @r, HealthTex);

      end;

// Lag alert

if isInLag then DrawSprite(sprLag, 32 - cScreenWidth div 2, 32, (RealTicks shr 7) mod 12);

// Wind bar

DrawSprite(sprWindBar, cScreenWidth div 2 - 180, cScreenHeight - 30, 0);

if WindBarWidth > 0 then

   begin

   {$WARNINGS OFF}

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

   {$WARNINGS ON}

   r.y:= 0;

   r.w:= WindBarWidth;

   r.h:= 13;

   DrawSpriteFromRect(sprWindR, r, cScreenWidth div 2 - 103, cScreenHeight - 28, 13, 0);

   end else

 if WindBarWidth < 0 then

   begin

   {$WARNINGS OFF}

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

   {$WARNINGS ON}

   r.y:= 0;

   r.w:= - WindBarWidth;

   r.h:= 13;

   DrawSpriteFromRect(sprWindL, r, cScreenWidth div 2 - 106 + WindBarWidth, cScreenHeight - 28, 13, 0);

   end;

// AmmoMenu

if (AMxShift < 210) or bShowAmmoMenu then ShowAmmoMenu;

// Cursor

if isCursorVisible and bShowAmmoMenu then

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

DrawChat;

if fastUntilLag then DrawCentered(0, cScreenHeight div 2, SyncTexture);

if isPaused then DrawCentered(0, cScreenHeight div 2, PauseTexture);

inc(Frames);

if cShowFPS then

   begin

   inc(CountTicks, Lag);

   if CountTicks >= 1000 then

      begin

      FPS:= Frames;

      Frames:= 0;

      CountTicks:= 0;

      s:= inttostr(FPS) + ' fps';

      if fpsTexture <> nil then FreeTexture(fpsTexture);

      tmpSurface:= TTF_RenderUTF8_Blended(Fontz[fnt16].Handle, Str2PChar(s), $FFFFFF);