(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2015 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *)

{$INCLUDE "options.inc"}

unit uLandPainted;

interface

procedure Draw;

procedure initModule;

procedure freeModule;

implementation

uses uLandGraphics, uConsts, uVariables, uUtils, SDLh, uCommands, uScript, uIO;

type PointRec = packed record

    X, Y: SmallInt;

    flags: byte;

    end;

    PPointRec = ^PointRec;

type

    PPointEntry = ^PointEntry;

    PointEntry = record

        point: PointRec;

        next: PPointEntry;

        end;

var pointsListHead, pointsListLast: PPointEntry;

procedure chDraw(var s: shortstring);

var rec: PointRec;

    prec: PPointRec;

    pe: PPointEntry;

    i, l: byte;

begin

    i:= 1;

    l:= length(s);

    while i < l do

        begin

        prec:= PPointRec(@s[i]);

        rec:= prec^;

        rec.X:= SDLNet_Read16(@rec.X);

        rec.Y:= SDLNet_Read16(@rec.Y);

        if rec.X < -318 then rec.X:= -318;

        if rec.X > 4096+318 then rec.X:= 4096+318;

        if rec.Y < -318 then rec.Y:= -318;

        if rec.Y > 2048+318 then rec.Y:= 2048+318;

        new(pe);

        if pointsListLast = nil then

            pointsListHead:= pe

        else

            pointsListLast^.next:= pe;

        pointsListLast:= pe;

        pe^.point:= rec;

        pe^.next:= nil;

        inc(i, 5)

        end;

end;

procedure Draw;

var pe: PPointEntry;

    prevPoint: PointRec;

    radius: LongInt;

    color, Xoffset, Yoffset: Longword;

    lineNumber, linePoints: Longword;

begin

    // shutup compiler

    prevPoint.X:= 0;

    prevPoint.Y:= 0;

    radius:= 0;

    linePoints:= 0;

    Xoffset:= (LAND_WIDTH-(playWidth)) div 2;

    Yoffset:= LAND_HEIGHT-(playHeight);

    pe:= pointsListHead;

    while (pe <> nil) and (pe^.point.flags and $80 = 0) do

        begin

        ScriptCall('onSpecialPoint', pe^.point.X, pe^.point.Y, pe^.point.flags);

        pe:= pe^.next;

        end;

    lineNumber:= 0;

    while(pe <> nil) do

        begin

        pe^.point.X:= LongInt(pe^.point.X) * playWidth div 4096 + Xoffset;

        pe^.point.Y:= LongInt(pe^.point.Y) * playHeight div 2048 + Yoffset;

        if (pe^.point.flags and $80 <> 0) then

            begin

            if (lineNumber > 0) and (linePoints = 0) and cAdvancedMapGenMode then

                    SendIPC('|' + inttostr(lineNumber - 1));

            inc(lineNumber);

            if (pe^.point.flags and $40 <> 0) then

                color:= 0

                else

                color:= lfBasic;

            radius:= (pe^.point.flags and $3F) * 5 + 3;

            radius:= (radius * playWidth div 4096);

            linePoints:= FillRoundInLand(pe^.point.X, pe^.point.Y, radius, color);

            end

        else

            begin

            inc(linePoints, DrawThickLine(prevPoint.X, prevPoint.Y, pe^.point.X, pe^.point.Y, radius, color));

            end;

        prevPoint:= pe^.point;

        pe:= pe^.next;

        end;

    if (topY > 0) then

        EraseLandRectRaw(0, 0, LAND_WIDTH, topY);

    if (leftX > 0) then

        EraseLandRectRaw(0, topY, leftX, LAND_HEIGHT - topY);

    if (rightX < (LAND_WIDTH - 1)) then

        EraseLandRectRaw(rightX + 1, topY, LAND_WIDTH - (rightX + 1), LAND_HEIGHT - topY);

end;

procedure initModule;

begin

    pointsListHead:= nil;

    pointsListLast:= nil;

    RegisterVariable('draw', @chDraw, false);

end;

procedure freeModule;

var pe, pp: PPointEntry;

begin

    pe:= pointsListHead;

    while(pe <> nil) do

        begin

        pp:= pe;

        pe:= pe^.next;

        dispose(pp);

        end;

end;

end.