1440 lines
39 KiB
Plaintext
1440 lines
39 KiB
Plaintext
(*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* http://www.opensource.org/licenses/cddl1.php.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* http://www.opensource.org/licenses/cddl1.php. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying * information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2009 Andreas Schneider
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*)
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unit ULandscape;
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{$mode objfpc}{$H+}
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interface
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uses
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SysUtils, Classes, math, LCLIntf, GL, GLU, ImagingOpenGL, Imaging,
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ImagingClasses, ImagingTypes, ImagingUtility,
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UGenericIndex, UMap, UStatics, UArt, UTexture, UTiledata, UHue, UWorldItem,
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UMulBlock,
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UVector, UEnhancedMemoryStream,
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UCacheManager;
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type
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PNormals = ^TNormals;
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TNormals = array[0..3] of TVector;
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PRadarBlock = ^TRadarBlock;
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TRadarBlock = array[0..7, 0..7] of Word;
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{ TMaterial } //TODO : add ref counting
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TMaterial = class(TObject)
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constructor Create(AWidth, AHeight: Integer; AGraphic: TSingleImage);
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destructor Destroy; override;
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protected
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FWidth: Integer;
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FHeight: Integer;
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FRealWidth: Integer;
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FRealHeight: Integer;
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FTexture: GLuint;
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FGraphic: TSingleImage;
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public
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property Width: Integer read FWidth;
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property Height: Integer read FHeight;
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property RealWidth: Integer read FRealWidth;
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property RealHeight: Integer read FRealHeight;
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property Texture: GLuint read FTexture;
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property Graphic: TSingleImage read FGraphic;
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function HitTest(AX, AY: Integer): Boolean;
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procedure UpdateTexture;
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end;
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{ TLandTextureManager }
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TLandTextureManager = class(TObject)
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constructor Create;
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destructor Destroy; override;
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function GetArtMaterial(ATileID: Word): TMaterial; overload;
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function GetArtMaterial(ATileID: Word; AHue: THue;
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APartialHue: Boolean): TMaterial; overload;
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function GetFlatLandMaterial(ATileID: Word): TMaterial;
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function GetTexMaterial(ATileID: Word): TMaterial;
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protected
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FArtCache: TCacheManager;
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FFlatLandArtCache: TCacheManager;
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FTexCache: TCacheManager;
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end;
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{ TSeperatedStaticBlock }
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TSeperatedStaticBlock = class(TStaticBlock)
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constructor Create(AData: TStream; AIndex: TGenericIndex; AX, AY: Word); overload;
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constructor Create(AData: TStream; AIndex: TGenericIndex); overload;
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destructor Destroy; override;
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public
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Cells: array[0..63] of TList;
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{ Methods }
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function Clone: TSeperatedStaticBlock; override;
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function GetSize: Integer; override;
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procedure RebuildList;
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end;
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{ TBlock }
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TBlock = class(TObject)
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constructor Create(AMap: TMapBlock; AStatics: TStaticBlock);
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destructor Destroy; override;
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protected
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{ Fields }
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FMapBlock: TMapBlock;
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FStaticBlock: TStaticBlock;
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public
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{ Fields }
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property Map: TMapBlock read FMapBlock;
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property Static: TStaticBlock read FStaticBlock;
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{ Methods }
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procedure UpdateBlockAcess;
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end;
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TLandscapeChangeEvent = procedure of object;
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TNewBlockEvent = procedure(ABlock: TBlock) of object;
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TStaticChangedEvent = procedure(AStaticItem: TStaticItem) of object;
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TStaticFilter = function(AStatic: TStaticItem): Boolean of object;
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TScreenBuffer = class;
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{ TLandscape }
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TLandscape = class(TObject)
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constructor Create(AWidth, AHeight: Word);
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destructor Destroy; override;
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protected
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{ Members }
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FWidth: Word;
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FHeight: Word;
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FCellWidth: Word;
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FCellHeight: Word;
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FBlockCache: TCacheManager;
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FOnChange: TLandscapeChangeEvent;
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FOnNewBlock: TNewBlockEvent;
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FOnStaticInserted: TStaticChangedEvent;
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FOnStaticDeleted: TStaticChangedEvent;
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FOnStaticElevated: TStaticChangedEvent;
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FOnStaticHued: TStaticChangedEvent;
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FOpenRequests: array of Boolean;
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{ Methods }
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function GetMapBlock(AX, AY: Word): TMapBlock;
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function GetMapCell(AX, AY: Word): TMapCell;
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function GetNormals(AX, AY: Word): TNormals;
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function GetStaticBlock(AX, AY: Word): TSeperatedStaticBlock;
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function GetStaticList(AX, AY: Word): TList;
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{ Events }
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procedure OnRemoveCachedObject(AObject: TObject);
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procedure OnBlocksPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnDrawMapPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnInsertStaticPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnDeleteStaticPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnElevateStaticPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnMoveStaticPacket(ABuffer: TEnhancedMemoryStream);
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procedure OnHueStaticPacket(ABuffer: TEnhancedMemoryStream);
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public
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{ Fields }
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property Width: Word read FWidth;
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property Height: Word read FHeight;
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property CellWidth: Word read FCellWidth;
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property CellHeight: Word read FCellHeight;
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property MapCell[X, Y: Word]: TMapCell read GetMapCell;
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property StaticList[X, Y: Word]: TList read GetStaticList;
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property Normals[X, Y: Word]: TNormals read GetNormals;
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property OnChange: TLandscapeChangeEvent read FOnChange write FOnChange;
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property OnNewBlock: TNewBlockEvent read FOnNewBlock write FOnNewBlock;
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property OnStaticInserted: TStaticChangedEvent read FOnStaticInserted
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write FOnStaticInserted;
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property OnStaticDeleted: TStaticChangedEvent read FOnStaticDeleted
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write FOnStaticDeleted;
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property OnStaticElevated: TStaticChangedEvent read FOnStaticElevated
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write FOnStaticElevated;
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property OnStaticHued: TStaticChangedEvent read FOnStaticHued
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write FOnStaticHued;
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{ Methods }
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procedure FillDrawList(ADrawList: TScreenBuffer; AX, AY, AWidth,
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AHeight: Word; AMinZ, AMaxZ: ShortInt; AMap, AStatics: Boolean;
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ANoDraw: Boolean; AStaticsFilter: TStaticFilter);
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function GetEffectiveAltitude(ATile: TMapCell): ShortInt;
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function GetLandAlt(AX, AY: Word; ADefault: ShortInt): ShortInt;
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procedure GetNormals(AX, AY: Word; var ANormals: TNormals);
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procedure MoveStatic(AStatic: TStaticItem; AX, AY: Word);
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procedure PrepareBlocks(AX1, AY1, AX2, AY2: Word);
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procedure UpdateBlockAccess;
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end;
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TScreenState = (ssNormal, ssFiltered, ssGhost);
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PBlockInfo = ^TBlockInfo;
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TBlockInfo = record
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ScreenRect: TRect;
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DrawQuad: array[0..3,0..1] of TGLfloat;
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Item: TWorldItem;
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HighRes: TMaterial;
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LowRes: TMaterial;
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Normals: PNormals;
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State: TScreenState;
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Highlighted: Boolean;
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Next: PBlockInfo;
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end;
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{ TScreenBuffer }
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TScreenBuffer = class(TObject)
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constructor Create; virtual;
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destructor Destroy; override;
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protected
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{ Members }
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FCount: Cardinal;
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FShortCuts: array[-1..10] of PBlockInfo; //-1 = last, 0 = first, 1..10 = other shortcuts
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FShortCutsValid: Boolean;
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FSerial: Cardinal;
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public
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{ Methods }
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function Add(AItem: TWorldItem): PBlockInfo;
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procedure Clear;
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procedure Delete(AItem: TWorldItem);
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function Find(AScreenPosition: TPoint): PBlockInfo;
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function GetSerial: Cardinal;
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function Insert(AItem: TWorldItem): PBlockInfo;
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function Iterate(var ABlockInfo: PBlockInfo): Boolean;
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procedure Sort;
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procedure UpdateShortcuts;
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function UpdateSortOrder(AItem: TWorldItem): PBlockInfo;
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{ Events }
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procedure OnTileRemoved(ATile: TMulBlock);
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end;
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TStaticInfo = packed record
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X: Word;
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Y: Word;
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Z: ShortInt;
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TileID: Word;
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Hue: Word;
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end;
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implementation
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uses
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UGameResources, UdmNetwork, UPackets, UPacketHandlers;
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const
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mMap = 0;
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mStatics = 1;
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function GetID(AX, AY: Word): Integer;
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begin
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Result := ((AX and $7FFF) shl 15) or (AY and $7FFF);
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end;
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{ TLandTextureManager }
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constructor TLandTextureManager.Create;
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begin
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inherited Create;
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FArtCache := TCacheManager.Create(1024);
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FFlatLandArtCache := TCacheManager.Create(128);
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FTexCache := TCacheManager.Create(128);
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end;
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destructor TLandTextureManager.Destroy;
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begin
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if FArtCache <> nil then FreeAndNil(FArtCache);
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if FFlatLandArtCache <> nil then FreeAndNil(FFlatLandArtCache);
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if FTexCache <> nil then FreeAndNil(FTexCache);
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inherited Destroy;
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end;
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function TLandTextureManager.GetArtMaterial(ATileID: Word): TMaterial;
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var
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artEntry: TArt;
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begin
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if not FArtCache.QueryID(ATileID, TObject(Result)) then
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begin
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artEntry := TArt(ResMan.Art.Block[ATileID]);
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Result := TMaterial.Create(artEntry.Graphic.Width, artEntry.Graphic.Height,
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artEntry.Graphic);
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FArtCache.StoreID(ATileID, Result);
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artEntry.Free;
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end;
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end;
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function TLandTextureManager.GetArtMaterial(ATileID: Word; AHue: THue; APartialHue: Boolean): TMaterial;
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var
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artEntry: TArt;
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id: Integer;
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begin
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if AHue = nil then
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begin
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Result := GetArtMaterial(ATileID);
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end else
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begin
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id := ATileID or ((AHue.ID and $3FFF) shl 15) or (Byte(APartialHue) shl 29);
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if not FArtCache.QueryID(id, TObject(Result)) then
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begin
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artEntry := ResMan.Art.GetArt(ATileID, 0, AHue, APartialHue);
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Result := TMaterial.Create(artEntry.Graphic.Width, artEntry.Graphic.Height,
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artEntry.Graphic);
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FArtCache.StoreID(id, Result);
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artEntry.Free;
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end;
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end;
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end;
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function TLandTextureManager.GetFlatLandMaterial(ATileID: Word): TMaterial;
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var
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artEntry: TArt;
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begin
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if not FFlatLandArtCache.QueryID(ATileID, TObject(Result)) then
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begin
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artEntry := ResMan.Art.GetFlatLand(ATileID);
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Result := TMaterial.Create(artEntry.Graphic.Width, artEntry.Graphic.Height,
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artEntry.Graphic);
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FFlatLandArtCache.StoreID(ATileID, Result);
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artEntry.Free;
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end;
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end;
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function TLandTextureManager.GetTexMaterial(ATileID: Word): TMaterial;
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var
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texEntry: TTexture;
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texID: Integer;
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begin
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if not FTexCache.QueryID(ATileID, TObject(Result)) then
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begin
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texID := ResMan.Tiledata.LandTiles[ATileID].TextureID;
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if texID > 0 then
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begin
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texEntry := TTexture(ResMan.Texmaps.Block[texID]);
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Result := TMaterial.Create(texEntry.Graphic.Width, texEntry.Graphic.Height,
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texEntry.Graphic);
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FTexCache.StoreID(ATileID, Result);
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texEntry.Free;
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end else
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Result := nil;
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end;
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end;
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{ TSeperatedStaticBlock }
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constructor TSeperatedStaticBlock.Create(AData: TStream; AIndex: TGenericIndex;
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AX, AY: Word);
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var
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i: Integer;
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item: TStaticItem;
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block: TMemoryStream;
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begin
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inherited Create;
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FItems := TList.Create;
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FX := AX;
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FY := AY;
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for i := 0 to 63 do
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Cells[i] := TList.Create;
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if (AData <> nil) and (AIndex.Lookup > 0) and (AIndex.Size > 0) then
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begin
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AData.Position := AIndex.Lookup;
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block := TMemoryStream.Create;
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block.CopyFrom(AData, AIndex.Size);
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block.Position := 0;
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for i := 1 to (AIndex.Size div 7) do
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begin
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item := TStaticItem.Create(Self, block, AX, AY);
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Cells[(item.Y mod 8) * 8 + (item.X mod 8)].Add(item);
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end;
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block.Free;
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end;
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end;
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constructor TSeperatedStaticBlock.Create(AData: TStream; AIndex: TGenericIndex);
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begin
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Create(AData, AIndex, 0, 0);
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end;
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destructor TSeperatedStaticBlock.Destroy;
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var
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i, j: Integer;
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begin
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FreeAndNil(FItems);
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for i := 0 to 63 do
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begin
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if Cells[i] <> nil then
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begin
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for j := 0 to Cells[i].Count - 1 do
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begin
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if Cells[i][j] <> nil then
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begin
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TStaticItem(Cells[i][j]).Free;
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Cells[i][j] := nil;
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end;
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end;
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Cells[i].Free;
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Cells[i] := nil;
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end;
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end;
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inherited Destroy;
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end;
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function TSeperatedStaticBlock.Clone: TSeperatedStaticBlock;
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begin
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raise Exception.Create('TSeperatedStaticBlock.Clone is not implemented (yet).');
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end;
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function TSeperatedStaticBlock.GetSize: Integer;
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begin
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RebuildList;
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Result := inherited GetSize;
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end;
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procedure TSeperatedStaticBlock.RebuildList;
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var
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i, j, solver: Integer;
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begin
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FItems.Clear;
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solver := 0;
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for i := 0 to 63 do
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begin
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if Cells[i] <> nil then
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begin
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for j := 0 to Cells[i].Count - 1 do
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begin
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FItems.Add(Cells[i].Items[j]);
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TStaticItem(Cells[i].Items[j]).UpdatePriorities(
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ResMan.Tiledata.StaticTiles[TStaticItem(Cells[i].Items[j]).TileID],
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solver);
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Inc(solver);
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end;
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end;
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end;
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Sort;
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end;
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{ TBlock }
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constructor TBlock.Create(AMap: TMapBlock; AStatics: TStaticBlock);
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begin
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inherited Create;
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FMapBlock := AMap;
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FStaticBlock := AStatics;
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UpdateBlockAcess;
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end;
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destructor TBlock.Destroy;
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begin
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if FMapBlock <> nil then FreeAndNil(FMapBlock);
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if FStaticBlock <> nil then FreeAndNil(FStaticBlock);
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inherited Destroy;
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end;
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procedure TBlock.UpdateBlockAcess;
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var
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staticItem: TStaticItem;
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i: Integer;
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begin
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for i := Low(FMapBlock.Cells) to High(FMapBlock.Cells) do
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begin
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FMapBlock.Cells[i].CanBeEdited := dmNetwork.CanWrite(
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FMapBlock.Cells[i].X, FMapBlock.Cells[i].Y);
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end;
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if FStaticBlock is TSeperatedStaticBlock then
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TSeperatedStaticBlock(FStaticBlock).RebuildList; //fill items
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for i := 0 to FStaticBlock.Items.Count - 1 do
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begin
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staticItem := TStaticItem(FStaticBlock.Items[i]);
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staticItem.CanBeEdited := dmNetwork.CanWrite(
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staticItem.X, staticItem.Y);
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end;
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end;
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{ TLandscape }
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constructor TLandscape.Create(AWidth, AHeight: Word);
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var
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blockID: Integer;
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begin
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inherited Create;
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FWidth := AWidth;
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FHeight := AHeight;
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FCellWidth := FWidth * 8;
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FCellHeight := FHeight * 8;
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FBlockCache := TCacheManager.Create(256);
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FBlockCache.OnRemoveObject := @OnRemoveCachedObject;
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FOnChange := nil;
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FOnNewBlock := nil;
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FOnStaticDeleted := nil;
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FOnStaticElevated := nil;
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FOnStaticHued := nil;
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FOnStaticInserted := nil;
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SetLength(FOpenRequests, FWidth * FHeight); //TODO : TBits?
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for blockID := 0 to Length(FOpenRequests) - 1 do
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FOpenRequests[blockID] := False;
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RegisterPacketHandler($04, TPacketHandler.Create(0, @OnBlocksPacket));
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RegisterPacketHandler($06, TPacketHandler.Create(8, @OnDrawMapPacket));
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RegisterPacketHandler($07, TPacketHandler.Create(10, @OnInsertStaticPacket));
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RegisterPacketHandler($08, TPacketHandler.Create(10, @OnDeleteStaticPacket));
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RegisterPacketHandler($09, TPacketHandler.Create(11, @OnElevateStaticPacket));
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RegisterPacketHandler($0A, TPacketHandler.Create(14, @OnMoveStaticPacket));
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RegisterPacketHandler($0B, TPacketHandler.Create(12, @OnHueStaticPacket));
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end;
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destructor TLandscape.Destroy;
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begin
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if FBlockCache <> nil then
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begin
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FBlockCache.OnRemoveObject := nil;
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FreeAndNil(FBlockCache);
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end;
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RegisterPacketHandler($04, nil);
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RegisterPacketHandler($06, nil);
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RegisterPacketHandler($07, nil);
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RegisterPacketHandler($08, nil);
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RegisterPacketHandler($09, nil);
|
|
RegisterPacketHandler($0A, nil);
|
|
RegisterPacketHandler($0B, nil);
|
|
|
|
inherited Destroy;
|
|
end;
|
|
|
|
function TLandscape.GetMapBlock(AX, AY: Word): TMapBlock;
|
|
var
|
|
block: TBlock;
|
|
begin
|
|
Result := nil;
|
|
if (AX >= 0) and (AX < FWidth) and (AY >= 0) and (AY < FHeight) then
|
|
begin
|
|
if FBlockCache.QueryID(GetID(AX, AY), TObject(block)) then
|
|
Result := block.Map;
|
|
end;
|
|
end;
|
|
|
|
function TLandscape.GetMapCell(AX, AY: Word): TMapCell;
|
|
var
|
|
block: TMapBlock;
|
|
begin
|
|
Result := nil;
|
|
if (AX >= 0) and (AX <= FCellWidth) and (AY >= 0) and (AY <= FCellHeight) then
|
|
begin
|
|
block := GetMapBlock(AX div 8, AY div 8);
|
|
if block <> nil then
|
|
Result := block.Cells[(AY mod 8) * 8 + AX mod 8];
|
|
end;
|
|
end;
|
|
|
|
function TLandscape.GetNormals(AX, AY: Word): TNormals;
|
|
begin
|
|
GetNormals(AX, AY, Result);
|
|
end;
|
|
|
|
function TLandscape.GetStaticBlock(AX, AY: Word): TSeperatedStaticBlock;
|
|
var
|
|
block: TBlock;
|
|
begin
|
|
Result := nil;
|
|
if (AX >= 0) and (AX < FWidth) and (AY >= 0) and (AY < FHeight) then
|
|
begin
|
|
if FBlockCache.QueryID(GetID(AX, AY), TObject(block)) then
|
|
Result := TSeperatedStaticBlock(block.Static);
|
|
end;
|
|
end;
|
|
|
|
function TLandscape.GetStaticList(AX, AY: Word): TList;
|
|
var
|
|
block: TSeperatedStaticBlock;
|
|
begin
|
|
Result := nil;
|
|
if (AX >= 0) and (AX <= FCellWidth) and (AY >= 0) and (AY <= FCellHeight) then
|
|
begin
|
|
block := GetStaticBlock(AX div 8, AY div 8);
|
|
if block <> nil then
|
|
Result := block.Cells[(AY mod 8) * 8 + AX mod 8];
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.OnRemoveCachedObject(AObject: TObject);
|
|
var
|
|
block: TBlock;
|
|
begin
|
|
block := AObject as TBlock;
|
|
if block <> nil then
|
|
dmNetwork.Send(TFreeBlockPacket.Create(block.Map.X, block.Map.Y));
|
|
end;
|
|
|
|
procedure TLandscape.OnBlocksPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
index: TGenericIndex;
|
|
map: TMapBlock;
|
|
statics: TStaticBlock;
|
|
coords: TBlockCoords;
|
|
count: Word;
|
|
id: Integer;
|
|
block: TBlock;
|
|
begin
|
|
index := TGenericIndex.Create(nil);
|
|
while ABuffer.Position < ABuffer.Size do
|
|
begin
|
|
ABuffer.Read(coords, SizeOf(TBlockCoords));
|
|
id := GetID(coords.X, coords.Y);
|
|
|
|
map := TMapBlock.Create(ABuffer, coords.X, coords.Y);
|
|
count := ABuffer.ReadWord;
|
|
if count > 0 then
|
|
index.Lookup := ABuffer.Position
|
|
else
|
|
index.Lookup := -1;
|
|
index.Size := count * 7;
|
|
statics := TSeperatedStaticBlock.Create(ABuffer, index, coords.X, coords.Y);
|
|
|
|
FBlockCache.RemoveID(id);
|
|
block := TBlock.Create(map, statics);
|
|
FBlockCache.StoreID(id, block);
|
|
|
|
FOpenRequests[coords.Y * FWidth + coords.X] := False;
|
|
|
|
if Assigned(FOnNewBlock) then FOnNewBlock(block);
|
|
end;
|
|
index.Free;
|
|
end;
|
|
|
|
procedure TLandscape.OnDrawMapPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
x, y: Word;
|
|
cell: TMapCell;
|
|
begin
|
|
x := ABuffer.ReadWord;
|
|
y := ABuffer.ReadWord;
|
|
cell := GetMapCell(x, y);
|
|
if cell <> nil then
|
|
begin
|
|
cell.Altitude := ABuffer.ReadShortInt;
|
|
cell.TileID := ABuffer.ReadWord;
|
|
if Assigned(FOnChange) then FOnChange;
|
|
end;
|
|
//TODO : update surrounding normals
|
|
end;
|
|
|
|
procedure TLandscape.OnInsertStaticPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
x, y: Word;
|
|
block: TSeperatedStaticBlock;
|
|
staticItem: TStaticItem;
|
|
targetStaticList: TList;
|
|
i: Integer;
|
|
begin
|
|
x := ABuffer.ReadWord;
|
|
y := ABuffer.ReadWord;
|
|
block := GetStaticBlock(x div 8, y div 8);
|
|
if block <> nil then
|
|
begin
|
|
staticItem := TStaticItem.Create(nil, nil, 0, 0);
|
|
staticItem.X := x;
|
|
staticItem.Y := y;
|
|
staticItem.Z := ABuffer.ReadShortInt;
|
|
staticItem.TileID := ABuffer.ReadWord;
|
|
staticItem.Hue := ABuffer.ReadWord;
|
|
targetStaticList := block.Cells[(y mod 8) * 8 + x mod 8];
|
|
targetStaticList.Add(staticItem);
|
|
for i := 0 to targetStaticList.Count - 1 do
|
|
TStaticItem(targetStaticList.Items[i]).UpdatePriorities(
|
|
ResMan.Tiledata.StaticTiles[TStaticItem(targetStaticList.Items[i]).TileID],
|
|
i);
|
|
targetStaticList.Sort(@CompareWorldItems);
|
|
staticItem.Owner := block;
|
|
staticItem.CanBeEdited := dmNetwork.CanWrite(x, y);
|
|
|
|
if Assigned(FOnStaticInserted) then FOnStaticInserted(staticItem);
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.OnDeleteStaticPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
block: TSeperatedStaticBlock;
|
|
i: Integer;
|
|
statics: TList;
|
|
staticInfo: TStaticInfo;
|
|
staticItem: TStaticItem;
|
|
begin
|
|
ABuffer.Read(staticInfo, SizeOf(TStaticInfo));
|
|
block := GetStaticBlock(staticInfo.X div 8, staticInfo.Y div 8);
|
|
if block <> nil then
|
|
begin
|
|
statics := block.Cells[(staticInfo.Y mod 8) * 8 + staticInfo.X mod 8];
|
|
for i := 0 to statics.Count - 1 do
|
|
begin
|
|
staticItem := TStaticItem(statics.Items[i]);
|
|
if (staticItem.Z = staticInfo.Z) and
|
|
(staticItem.TileID = staticInfo.TileID) and
|
|
(staticItem.Hue = staticInfo.Hue) then
|
|
begin
|
|
if Assigned(FOnStaticDeleted) then FOnStaticDeleted(staticItem);
|
|
statics.Delete(i);
|
|
staticItem.Delete;
|
|
|
|
Break;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.OnElevateStaticPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
block: TSeperatedStaticBlock;
|
|
i,j : Integer;
|
|
statics: TList;
|
|
staticInfo: TStaticInfo;
|
|
staticItem: TStaticItem;
|
|
begin
|
|
ABuffer.Read(staticInfo, SizeOf(TStaticInfo));
|
|
block := GetStaticBlock(staticInfo.X div 8, staticInfo.Y div 8);
|
|
if block <> nil then
|
|
begin
|
|
statics := block.Cells[(staticInfo.Y mod 8) * 8 + staticInfo.X mod 8];
|
|
for i := 0 to statics.Count - 1 do
|
|
begin
|
|
staticItem := TStaticItem(statics.Items[i]);
|
|
if (staticItem.Z = staticInfo.Z) and
|
|
(staticItem.TileID = staticInfo.TileID) and
|
|
(staticItem.Hue = staticInfo.Hue) then
|
|
begin
|
|
staticItem.Z := ABuffer.ReadShortInt;
|
|
for j := 0 to statics.Count - 1 do
|
|
TStaticItem(statics.Items[j]).UpdatePriorities(
|
|
ResMan.Tiledata.StaticTiles[TStaticItem(statics.Items[j]).TileID],
|
|
j);
|
|
statics.Sort(@CompareWorldItems);
|
|
|
|
if Assigned(FOnStaticElevated) then FOnStaticElevated(staticItem);
|
|
|
|
Break;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.OnMoveStaticPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
sourceBlock, targetBlock: TSeperatedStaticBlock;
|
|
i: Integer;
|
|
statics: TList;
|
|
staticInfo: TStaticInfo;
|
|
staticItem: TStaticItem;
|
|
newX, newY: Word;
|
|
begin
|
|
staticItem := nil;
|
|
ABuffer.Read(staticInfo, SizeOf(TStaticInfo));
|
|
newX := EnsureRange(ABuffer.ReadWord, 0, FCellWidth - 1);
|
|
newY := EnsureRange(ABuffer.ReadWord, 0, FCellHeight - 1);
|
|
|
|
sourceBlock := GetStaticBlock(staticInfo.X div 8, staticInfo.Y div 8);
|
|
targetBlock := GetStaticBlock(newX div 8, newY div 8);
|
|
if sourceBlock <> nil then
|
|
begin
|
|
statics := sourceBlock.Cells[(staticInfo.Y mod 8) * 8 + staticInfo.X mod 8];
|
|
i := 0;
|
|
while (i < statics.Count) and (staticItem = nil) do
|
|
begin
|
|
staticItem := TStaticItem(statics.Items[i]);
|
|
if (staticItem.Z <> staticInfo.Z) or
|
|
(staticItem.TileID <> staticInfo.TileID) or
|
|
(staticItem.Hue <> staticInfo.Hue) then
|
|
begin
|
|
staticItem := nil;
|
|
end;
|
|
Inc(i);
|
|
end;
|
|
|
|
if staticItem <> nil then
|
|
begin
|
|
if Assigned(FOnStaticDeleted) then FOnStaticDeleted(staticItem);
|
|
statics.Remove(staticItem);
|
|
staticItem.Delete;
|
|
end;
|
|
end;
|
|
|
|
if targetBlock <> nil then
|
|
begin
|
|
staticItem := TStaticItem.Create(nil, nil, 0, 0);
|
|
staticItem.X := newX;
|
|
staticItem.Y := newY;
|
|
staticItem.Z := staticInfo.Z;
|
|
staticItem.TileID := staticInfo.TileID;
|
|
staticItem.Hue := staticInfo.Hue;
|
|
statics := targetBlock.Cells[(newY mod 8) * 8 + newX mod 8];
|
|
statics.Add(staticItem);
|
|
for i := 0 to statics.Count - 1 do
|
|
TStaticItem(statics.Items[i]).UpdatePriorities(
|
|
ResMan.Tiledata.StaticTiles[TStaticItem(statics.Items[i]).TileID],
|
|
i);
|
|
statics.Sort(@CompareWorldItems);
|
|
staticItem.Owner := targetBlock;
|
|
staticItem.CanBeEdited := dmNetwork.CanWrite(newX, newY);
|
|
|
|
if Assigned(FOnStaticInserted) then FOnStaticInserted(staticItem);
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.OnHueStaticPacket(ABuffer: TEnhancedMemoryStream);
|
|
var
|
|
block: TSeperatedStaticBlock;
|
|
i : Integer;
|
|
statics: TList;
|
|
staticInfo: TStaticInfo;
|
|
staticItem: TStaticItem;
|
|
begin
|
|
ABuffer.Read(staticInfo, SizeOf(TStaticInfo));
|
|
block := GetStaticBlock(staticInfo.X div 8, staticInfo.Y div 8);
|
|
if block <> nil then
|
|
begin
|
|
statics := block.Cells[(staticInfo.Y mod 8) * 8 + staticInfo.X mod 8];
|
|
for i := 0 to statics.Count - 1 do
|
|
begin
|
|
staticItem := TStaticItem(statics.Items[i]);
|
|
if (staticItem.Z = staticInfo.Z) and
|
|
(staticItem.TileID = staticInfo.TileID) and
|
|
(staticItem.Hue = staticInfo.Hue) then
|
|
begin
|
|
staticItem.Hue := ABuffer.ReadWord;
|
|
if Assigned(FOnStaticHued) then FOnStaticHued(staticItem);
|
|
Break;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.FillDrawList(ADrawList: TScreenBuffer; AX, AY, AWidth,
|
|
AHeight: Word; AMinZ, AMaxZ: ShortInt; AMap, AStatics: Boolean;
|
|
ANoDraw: Boolean; AStaticsFilter: TStaticFilter);
|
|
var
|
|
landAlt: ShortInt;
|
|
drawMapCell: TMapCell;
|
|
drawStatics: TList;
|
|
i, x, y: Integer;
|
|
begin
|
|
for x := AX to AX + AWidth do
|
|
begin
|
|
for y := AY to AY + AWidth do
|
|
begin
|
|
if AMap then
|
|
begin
|
|
landAlt := GetLandAlt(x, y, 0);
|
|
if (landAlt >= AMinZ) and (landAlt <= AMaxZ) then
|
|
begin
|
|
drawMapCell := GetMapCell(x, y);
|
|
if (drawMapCell <> nil) and (ANoDraw or (drawMapCell.TileID > 2)) then
|
|
begin
|
|
drawMapCell.Priority := GetEffectiveAltitude(drawMapCell);
|
|
drawMapCell.PriorityBonus := 0;
|
|
drawMapCell.PrioritySolver := 0;
|
|
ADrawList.Add(drawMapCell);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
if AStatics then
|
|
begin
|
|
drawStatics := GetStaticList(x, y);
|
|
if drawStatics <> nil then
|
|
for i := 0 to drawStatics.Count - 1 do
|
|
if (TStaticItem(drawStatics[i]).Z >= AMinZ) and
|
|
(TStaticItem(drawStatics[i]).Z <= AMaxZ) and
|
|
((AStaticsFilter = nil) or AStaticsFilter(TStaticItem(drawStatics[i]))) then
|
|
begin
|
|
TStaticItem(drawStatics[i]).UpdatePriorities(
|
|
ResMan.Tiledata.StaticTiles[TStaticItem(drawStatics[i]).TileID],
|
|
ADrawList.GetSerial);
|
|
ADrawList.Add(TWorldItem(drawStatics[i]));
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
ADrawList.Sort;
|
|
end;
|
|
|
|
function TLandscape.GetEffectiveAltitude(ATile: TMapCell): ShortInt;
|
|
var
|
|
north, west, south, east: ShortInt;
|
|
begin
|
|
north := ATile.Altitude;
|
|
west := GetLandAlt(ATile.X, ATile.Y + 1, north);
|
|
south := GetLandAlt(ATile.X + 1, ATile.Y + 1, north);
|
|
east := GetLandAlt(ATile.X + 1, ATile.Y, north);
|
|
|
|
if Abs(north - south) >= Abs(west - east) then
|
|
Result := Min(north, south) + Abs(west - east) div 2
|
|
else
|
|
Result := Min(north, south) + Abs(north - south) div 2;
|
|
end;
|
|
|
|
function TLandscape.GetLandAlt(AX, AY: Word; ADefault: ShortInt): ShortInt;
|
|
var
|
|
cell: TMapCell;
|
|
begin
|
|
cell := MapCell[AX, AY];
|
|
if cell <> nil then
|
|
Result := cell.Altitude
|
|
else
|
|
Result := ADefault;
|
|
end;
|
|
|
|
procedure TLandscape.GetNormals(AX, AY: Word; var ANormals: TNormals);
|
|
var
|
|
cells: array[0..2, 0..2] of TNormals;
|
|
north, west, south, east: TVector;
|
|
i, j: Integer;
|
|
|
|
function GetPlainNormals(X, Y: SmallInt): TNormals;
|
|
var
|
|
cell: TMapCell;
|
|
north, west, south, east: ShortInt;
|
|
u, v: TVector;
|
|
begin
|
|
cell := GetMapCell(X, Y);
|
|
if Assigned(cell) then
|
|
begin
|
|
north := cell.Altitude;
|
|
west := GetLandAlt(cell.X, cell.Y + 1, north);
|
|
south := GetLandAlt(cell.X + 1, cell.Y + 1, north);
|
|
east := GetLandAlt(cell.X + 1, cell.Y, north);
|
|
end else
|
|
begin
|
|
north := 0;
|
|
west := 0;
|
|
east := 0;
|
|
south := 0;
|
|
end;
|
|
|
|
if (north = west) and (west = east) and (north = south) then
|
|
begin
|
|
ANormals[0] := Vector(0, 0, 1);
|
|
ANormals[1] := Vector(0, 0, 1);
|
|
ANormals[2] := Vector(0, 0, 1);
|
|
ANormals[3] := Vector(0, 0, 1);
|
|
end else
|
|
begin
|
|
u := Vector(-22, 22, (north - east) * 4);
|
|
v := Vector(-22, -22, (west - north) * 4);
|
|
ANormals[0] := VectorNorm(VectorCross(u, v));
|
|
|
|
u := Vector(22, 22, (east - south) * 4);
|
|
v := Vector(-22, 22, (north - east) * 4);
|
|
ANormals[1] := VectorNorm(VectorCross(u, v));
|
|
|
|
u := Vector(22, -22, (south - west) * 4);
|
|
v := Vector(22, 22, (east - south) * 4);
|
|
ANormals[2] := VectorNorm(VectorCross(u, v));
|
|
|
|
u := Vector(-22, -22, (west - north) * 4);
|
|
v := Vector(22, -22, (south - west) * 4);
|
|
ANormals[3] := VectorNorm(VectorCross(u, v));
|
|
end;
|
|
end;
|
|
begin
|
|
for i := 0 to 2 do
|
|
for j := 0 to 2 do
|
|
cells[i, j] := GetPlainNormals(AX - 1 + i, AY - 1 + j);
|
|
|
|
north := cells[0, 0][2];
|
|
west := cells[0, 1][1];
|
|
east := cells[1, 0][3];
|
|
south := cells[1, 1][0];
|
|
ANormals[0] := VectorNorm(VectorAdd(VectorAdd(VectorAdd(north, west), east), south));
|
|
|
|
north := cells[1, 0][2];
|
|
west := cells[1, 1][1];
|
|
east := cells[2, 0][3];
|
|
south := cells[2, 1][0];
|
|
ANormals[1] := VectorNorm(VectorAdd(VectorAdd(VectorAdd(north, west), east), south));
|
|
|
|
north := cells[1, 1][2];
|
|
west := cells[1, 2][1];
|
|
east := cells[2, 1][3];
|
|
south := cells[2, 2][0];
|
|
ANormals[2] := VectorNorm(VectorAdd(VectorAdd(VectorAdd(north, west), east), south));
|
|
|
|
north := cells[0, 1][2];
|
|
west := cells[0, 2][1];
|
|
east := cells[1, 1][3];
|
|
south := cells[1, 2][0];
|
|
ANormals[3] := VectorNorm(VectorAdd(VectorAdd(VectorAdd(north, west), east), south));
|
|
end;
|
|
|
|
procedure TLandscape.MoveStatic(AStatic: TStaticItem; AX, AY: Word);
|
|
var
|
|
sourceBlock, targetBlock: TSeperatedStaticBlock;
|
|
targetStaticList: TList;
|
|
i: Integer;
|
|
begin
|
|
if (AX >= 0) and (AX <= FCellWidth) and (AY >= 0) and (AY <= FCellHeight) then
|
|
begin
|
|
sourceBlock := AStatic.Owner as TSeperatedStaticBlock;
|
|
targetBlock := GetStaticBlock(AX div 8, AY div 8);
|
|
if (sourceBlock <> nil) and (targetBlock <> nil) then
|
|
begin
|
|
sourceBlock.Cells[(AStatic.Y mod 8) * 8 + AStatic.X mod 8].Remove(AStatic);
|
|
targetStaticList := targetBlock.Cells[(AY mod 8) * 8 + AX mod 8];
|
|
targetStaticList.Add(AStatic);
|
|
for i := 0 to targetStaticList.Count - 1 do
|
|
TStaticItem(targetStaticList.Items[i]).UpdatePriorities(
|
|
ResMan.Tiledata.StaticTiles[TStaticItem(targetStaticList.Items[i]).TileID],
|
|
i);
|
|
targetStaticList.Sort(@CompareWorldItems);
|
|
AStatic.UpdatePos(AX, AY, AStatic.Z);
|
|
AStatic.Owner := targetBlock;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TLandscape.PrepareBlocks(AX1, AY1, AX2, AY2: Word);
|
|
var
|
|
x, y, i: Integer;
|
|
coords: TBlockCoordsArray;
|
|
obj: TObject;
|
|
begin
|
|
AX1 := EnsureRange(AX1, 0, FWidth - 1);
|
|
AY1 := EnsureRange(AY1, 0, FHeight - 1);
|
|
AX2 := EnsureRange(AX2, 0, FWidth - 1);
|
|
AY2 := EnsureRange(AY2, 0, FHeight - 1);
|
|
|
|
SetLength(coords, 0);
|
|
for x := AX1 to AX2 do
|
|
begin
|
|
for y := AY1 to AY2 do
|
|
begin
|
|
if (not FOpenRequests[y * FWidth + x]) and
|
|
(not FBlockCache.QueryID(GetID(x, y), obj)) then
|
|
begin
|
|
SetLength(coords, Length(coords) + 1);
|
|
i := High(coords);
|
|
coords[i].X := x;
|
|
coords[i].Y := y;
|
|
FOpenRequests[y * FWidth + x] := True;
|
|
end;
|
|
end;
|
|
end;
|
|
if Length(coords) > 0 then
|
|
dmNetwork.Send(TRequestBlocksPacket.Create(coords));
|
|
end;
|
|
|
|
procedure TLandscape.UpdateBlockAccess;
|
|
var
|
|
cacheEntry: PCacheEntry;
|
|
begin
|
|
cacheEntry := nil;
|
|
while FBlockCache.Iterate(cacheEntry) do
|
|
TBlock(cacheEntry^.Obj).UpdateBlockAcess;
|
|
end;
|
|
|
|
{ TMaterial }
|
|
|
|
constructor TMaterial.Create(AWidth, AHeight: Integer;
|
|
AGraphic: TSingleImage);
|
|
var
|
|
caps: TGLTextureCaps;
|
|
begin
|
|
inherited Create;
|
|
FRealWidth := AWidth;
|
|
FRealHeight := AHeight;
|
|
GetGLTextureCaps(caps);
|
|
if caps.NonPowerOfTwo then
|
|
begin
|
|
FWidth := AWidth;
|
|
FHeight := AHeight;
|
|
end else
|
|
begin
|
|
if IsPow2(AWidth) then FWidth := AWidth else FWidth := NextPow2(AWidth);
|
|
if IsPow2(AHeight) then FHeight := AHeight else FHeight := NextPow2(AHeight);
|
|
end;
|
|
FGraphic := TSingleImage.CreateFromParams(FWidth, FHeight, ifA8R8G8B8);
|
|
AGraphic.CopyTo(0, 0, AWidth, AHeight, FGraphic, 0, 0);
|
|
UpdateTexture;
|
|
end;
|
|
|
|
destructor TMaterial.Destroy;
|
|
begin
|
|
if FGraphic <> nil then FreeAndNil(FGraphic);
|
|
if FTexture <> 0 then glDeleteTextures(1, @FTexture);
|
|
inherited Destroy;
|
|
end;
|
|
|
|
function TMaterial.HitTest(AX, AY: Integer): Boolean;
|
|
var
|
|
pixel: TColor32Rec;
|
|
begin
|
|
Result := False;
|
|
if InRange(AX, 0, FGraphic.Width - 1) and
|
|
InRange(AY, 0, FGraphic.Height - 1) then
|
|
begin
|
|
pixel := GetPixel32(FGraphic.ImageDataPointer^, AX, AY);
|
|
if pixel.A > 0 then
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
procedure TMaterial.UpdateTexture;
|
|
begin
|
|
if FTexture <> 0 then glDeleteTextures(1, @FTexture);
|
|
|
|
FTexture := CreateGLTextureFromImage(FGraphic.ImageDataPointer^, 0, 0, False, ifUnknown, @FWidth, @FHeight);
|
|
glBindTexture(GL_TEXTURE_2D, FTexture);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
|
end;
|
|
|
|
{ TScreenBuffer }
|
|
|
|
constructor TScreenBuffer.Create;
|
|
begin
|
|
inherited Create;
|
|
FCount := 0;
|
|
FSerial := 0;
|
|
UpdateShortcuts;
|
|
end;
|
|
|
|
destructor TScreenBuffer.Destroy;
|
|
begin
|
|
Clear;
|
|
inherited Destroy;
|
|
end;
|
|
|
|
function TScreenBuffer.Add(AItem: TWorldItem): PBlockInfo;
|
|
begin
|
|
New(Result);
|
|
AItem.Locked := True;
|
|
AItem.OnDestroy.RegisterEvent(@OnTileRemoved);
|
|
Result^.Item := AItem;
|
|
Result^.HighRes := nil;
|
|
Result^.LowRes := nil;
|
|
Result^.Normals := nil;
|
|
Result^.State := ssNormal;
|
|
Result^.Highlighted := False;
|
|
Result^.Next := nil;
|
|
|
|
if FShortCuts[0] = nil then //First element
|
|
begin
|
|
FShortCuts[0] := Result;
|
|
FShortCuts[-1] := Result; //Last element
|
|
end else
|
|
begin
|
|
FShortCuts[-1]^.Next := Result;
|
|
FShortCuts[-1] := Result;
|
|
end;
|
|
|
|
Inc(FCount);
|
|
end;
|
|
|
|
procedure TScreenBuffer.Clear;
|
|
var
|
|
current, next: PBlockInfo;
|
|
begin
|
|
current := FShortCuts[0];
|
|
while current <> nil do
|
|
begin
|
|
next := current^.Next;
|
|
current^.Item.Locked := False;
|
|
current^.Item.OnDestroy.UnregisterEvent(@OnTileRemoved);
|
|
if current^.Normals <> nil then Dispose(current^.Normals);
|
|
Dispose(current);
|
|
current := next;
|
|
end;
|
|
FShortCuts[0] := nil;
|
|
FShortCuts[-1] := nil;
|
|
|
|
FCount := 0;
|
|
FSerial := 0;
|
|
|
|
UpdateShortcuts;
|
|
end;
|
|
|
|
procedure TScreenBuffer.Delete(AItem: TWorldItem);
|
|
var
|
|
current, last, next: PBlockInfo;
|
|
begin
|
|
last := nil;
|
|
current := FShortCuts[0];
|
|
while current <> nil do
|
|
begin
|
|
if current^.Item = AItem then
|
|
begin
|
|
if FShortCuts[-1] = current then FShortCuts[-1] := last;
|
|
if FShortCuts[0] = current then FShortCuts[0] := current^.Next;
|
|
if last <> nil then last^.Next := current^.Next;
|
|
|
|
if current^.Normals <> nil then Dispose(current^.Normals);
|
|
|
|
Dispose(current);
|
|
Dec(FCount);
|
|
FShortCutsValid := False;
|
|
next := nil;
|
|
end else
|
|
next := current^.Next;
|
|
|
|
last := current;
|
|
current := next;
|
|
end;
|
|
end;
|
|
|
|
function TScreenBuffer.Find(AScreenPosition: TPoint): PBlockInfo;
|
|
var
|
|
current: PBlockInfo;
|
|
begin
|
|
Result := nil;
|
|
current := FShortCuts[0];
|
|
while current <> nil do //search the last matching tile
|
|
begin
|
|
if (current^.State = ssNormal) and
|
|
PtInRect(current^.ScreenRect, AScreenPosition) and
|
|
current^.LowRes.HitTest(AScreenPosition.x - current^.ScreenRect.Left,
|
|
AScreenPosition.y - current^.ScreenRect.Top) then
|
|
begin
|
|
Result := current;
|
|
end;
|
|
current := current^.Next;
|
|
end;
|
|
end;
|
|
|
|
function TScreenBuffer.GetSerial: Cardinal;
|
|
begin
|
|
Result := FSerial;
|
|
Inc(FSerial);
|
|
end;
|
|
|
|
function TScreenBuffer.Insert(AItem: TWorldItem): PBlockInfo;
|
|
var
|
|
current: PBlockInfo;
|
|
shortcut: Integer;
|
|
begin
|
|
if not FShortCutsValid then
|
|
UpdateShortcuts;
|
|
|
|
New(Result);
|
|
AItem.Locked := True;
|
|
AItem.OnDestroy.RegisterEvent(@OnTileRemoved);
|
|
Result^.Item := AItem;
|
|
Result^.HighRes := nil;
|
|
Result^.LowRes := nil;
|
|
Result^.Normals := nil;
|
|
Result^.State := ssNormal;
|
|
Result^.Highlighted := False;
|
|
|
|
if (FShortCuts[0] = nil) or (CompareWorldItems(AItem, FShortCuts[0]) < 0) then
|
|
begin
|
|
//TODO : update last element if necessary
|
|
Result^.Next := FShortCuts[0];
|
|
FShortCuts[0] := Result;
|
|
end else
|
|
begin
|
|
//find best entry point
|
|
shortcut := 0;
|
|
while (shortcut <= 10) and (FShortCuts[shortcut] <> nil) and
|
|
(CompareWorldItems(AItem, FShortCuts[shortcut]) >= 0) do
|
|
begin
|
|
current := FShortCuts[shortcut];
|
|
Inc(shortcut);
|
|
end;
|
|
|
|
//now find the real match
|
|
while (current^.Next <> nil) and
|
|
(CompareWorldItems(AItem, current^.Next^.Item) > 0) do
|
|
begin
|
|
current := current^.Next;
|
|
end;
|
|
//TODO : update last element if necessary
|
|
|
|
Result^.Next := current^.Next;
|
|
current^.Next := Result;
|
|
end;
|
|
|
|
Inc(FCount);
|
|
end;
|
|
|
|
function TScreenBuffer.Iterate(var ABlockInfo: PBlockInfo): Boolean;
|
|
begin
|
|
if ABlockInfo = nil then
|
|
ABlockInfo := FShortCuts[0]
|
|
else
|
|
ABlockInfo := ABlockInfo^.Next;
|
|
Result := ABlockInfo <> nil;
|
|
end;
|
|
|
|
//Mergesort
|
|
procedure TScreenBuffer.Sort;
|
|
|
|
function Merge(AHead1, AHead2: PBlockInfo): PBlockInfo;
|
|
begin
|
|
if AHead1 = nil then
|
|
Exit(AHead2);
|
|
|
|
if AHead2 = nil then
|
|
Exit(AHead1);
|
|
|
|
if CompareWorldItems(AHead1^.Item, AHead2^.Item) < 0 then
|
|
begin
|
|
Result := AHead1;
|
|
Result^.Next := Merge(Result^.Next, AHead2);
|
|
end else
|
|
begin
|
|
Result := AHead2;
|
|
Result^.Next := Merge(AHead1, Result^.Next);
|
|
end;
|
|
end;
|
|
|
|
function MergeSort(AHead: PBlockInfo): PBlockInfo;
|
|
var
|
|
head1, head2: PBlockInfo;
|
|
begin
|
|
if (AHead <> nil) and (AHead^.Next <> nil) then
|
|
begin
|
|
head1 := AHead;
|
|
head2 := AHead^.Next;
|
|
while (head2 <> nil) and (head2^.Next <> nil) do
|
|
begin
|
|
AHead := AHead^.Next;
|
|
head2 := AHead^.Next^.Next;
|
|
end;
|
|
head2 := AHead^.Next;
|
|
AHead^.Next := nil;
|
|
|
|
Result := Merge(MergeSort(head1), MergeSort(head2));
|
|
end else
|
|
Result := AHead;
|
|
end;
|
|
|
|
begin
|
|
if FShortCuts[0] <> nil then
|
|
FShortCuts[0] := MergeSort(FShortCuts[0]);
|
|
UpdateShortcuts;
|
|
end;
|
|
|
|
procedure TScreenBuffer.UpdateShortcuts;
|
|
var
|
|
shortcut, step, nextStep, stepSize: Integer;
|
|
blockInfo: PBlockInfo;
|
|
begin
|
|
if FCount < 10 then
|
|
begin
|
|
for shortcut := 1 to 10 do
|
|
FShortCuts[shortcut] := nil;
|
|
end
|
|
else if FShortCuts[0] <> nil then
|
|
begin
|
|
stepSize := FCount div 10;
|
|
nextStep := stepSize;
|
|
step := 0;
|
|
shortcut := 1;
|
|
blockInfo := FShortCuts[0];
|
|
repeat
|
|
if step = nextStep then
|
|
begin
|
|
FShortCuts[shortcut] := blockInfo;
|
|
Inc(shortcut);
|
|
Inc(nextStep, stepSize);
|
|
end;
|
|
|
|
Inc(step);
|
|
|
|
FShortCuts[-1] := blockInfo; //update last known item
|
|
blockInfo := blockInfo^.Next;
|
|
until (blockInfo = nil);
|
|
end;
|
|
FShortCutsValid := True;
|
|
end;
|
|
|
|
function TScreenBuffer.UpdateSortOrder(AItem: TWorldItem): PBlockInfo;
|
|
var
|
|
newNodePosition, oldNode, oldNodePrev, current: PBlockInfo;
|
|
begin
|
|
newNodePosition := nil;
|
|
oldNode := nil;
|
|
oldNodePrev := nil;
|
|
current := FShortCuts[0];
|
|
|
|
while (current <> nil) and ((oldNode = nil) or (newNodePosition = nil)) do
|
|
begin
|
|
if current^.Item = AItem then
|
|
oldNode := current
|
|
else if oldNode = nil then
|
|
oldNodePrev := current;
|
|
|
|
if newNodePosition = nil then
|
|
begin
|
|
if (current^.Next = nil) or (CompareWorldItems(AItem, current^.Next^.Item) < 0) then
|
|
newNodePosition := current;
|
|
end;
|
|
|
|
current := current^.Next;
|
|
end;
|
|
|
|
if oldNode <> newNodePosition then
|
|
begin
|
|
if oldNodePrev <> oldNode then
|
|
begin
|
|
if oldNodePrev = nil then
|
|
FShortCuts[0] := oldNode^.Next
|
|
else
|
|
oldNodePrev^.Next := oldNode^.Next;
|
|
end;
|
|
|
|
if (newNodePosition = FShortCuts[0]) and (CompareWorldItems(AItem, FShortCuts[0]^.Item) < 0) then
|
|
begin
|
|
oldNode^.Next := FShortCuts[0];
|
|
FShortCuts[0] := oldNode;
|
|
end else
|
|
begin
|
|
oldNode^.Next := newNodePosition^.Next;
|
|
newNodePosition^.Next := oldNode;
|
|
end;
|
|
end;
|
|
|
|
Result := oldNode;
|
|
end;
|
|
|
|
procedure TScreenBuffer.OnTileRemoved(ATile: TMulBlock);
|
|
begin
|
|
Delete(TWorldItem(ATile));
|
|
end;
|
|
|
|
end.
|
|
|