unit Choice;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ImgList, ComCtrls, Menus, ExtCtrls, ImageList,
LevelFunctions;
type
TLevelChoice = class(TForm)
PlayBtn: TButton;
CancelBtn: TButton;
LevelImageList: TImageList;
LevelPopupMenu: TPopupMenu;
PLoadLevel: TMenuItem;
PRefreshList: TMenuItem;
PreviewGrp: TGroupBox;
PreviewImage: TImage;
LevelGrp: TGroupBox;
LevelList: TListView;
procedure PlayBtnClick(Sender: TObject);
procedure CancelBtnClick(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure LevelListClick(Sender: TObject);
procedure LevelListChange(Sender: TObject; Item: TListItem; Change: TItemChange);
procedure PRefreshListClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
procedure RefreshList;
procedure DrawLevelPreview(Level: TLevel);
public
function SelectedLevel: string;
end;
var
LevelChoice: TLevelChoice;
implementation
{$R *.dfm}
uses
Functions, Constants;
procedure TLevelChoice.DrawLevelPreview(Level: TLevel);
var
PlaygroundMatrix: TPlayGroundMatrix;
y, x: integer;
indent: Integer;
Image: TImage;
BackgroundColor: TColor;
const
PREVIEW_BLOCK_SIZE = 10; // Enthält Field und Abstand
PREVIEW_TAB_SIZE = PREVIEW_BLOCK_SIZE div 2; // 5
begin
Image := PreviewImage;
BackgroundColor := Self.Color;
ClearImage(Image, BackgroundColor);
Level.FillPlaygroundMatrix(PlaygroundMatrix, false);
try
for x := Low(PlaygroundMatrix.Fields) to High(PlaygroundMatrix.Fields) do
begin
for y := Low(PlaygroundMatrix.Fields[x]) to High(PlaygroundMatrix.Fields[x]) do
begin
// Rectange filling
case PlaygroundMatrix.Fields[x,y].FieldType of
ftFullSpace: Image.Canvas.Brush.Color := BackgroundColor; // invisible
ftEmpty: Image.Canvas.Brush.Color := clWhite;
ftGreen: Image.Canvas.Brush.Color := clLime;
ftYellow: Image.Canvas.Brush.Color := clYellow;
ftRed: Image.Canvas.Brush.Color := clRed;
end;
// Rectangle border
if PlaygroundMatrix.Fields[x,y].Goal then
Image.Canvas.Pen.Color := clBlack
else
begin
if PlaygroundMatrix.Fields[x,y].FieldType = ftFullSpace then
Image.Canvas.Pen.Color := BackgroundColor // invisible
else
Image.Canvas.Pen.Color := clLtGray;
end;
// Draw the rectangle
indent := PlaygroundMatrix.Fields[x,y].Indent;
Image.Canvas.Rectangle(x*PREVIEW_BLOCK_SIZE + indent*PREVIEW_TAB_SIZE,
y*PREVIEW_BLOCK_SIZE,
x*PREVIEW_BLOCK_SIZE + indent*PREVIEW_TAB_SIZE + PREVIEW_BLOCK_SIZE,
y*PREVIEW_BLOCK_SIZE + PREVIEW_BLOCK_SIZE);
end;
end;
finally
PlaygroundMatrix.ClearMatrix(true);
end;
end;
function TLevelChoice.SelectedLevel: string;
begin
result := Format(LVL_FILE, [LevelList.Selected.Caption]);
end;
procedure TLevelChoice.PlayBtnClick(Sender: TObject);
var
Level: TLevel;
begin
if Assigned(LevelList.Selected) then
begin
if LevelList.Selected.ImageIndex = 2 then
begin
Level := TLevel.Create(Format(LVL_FILE, [LevelList.Selected.Caption]));
try
if Level.CheckLevelIntegrity(true) <> leNone then
begin
exit;
end;
finally
FreeAndNil(Level);
end;
end;
ModalResult := mrOk;
end;
end;
procedure TLevelChoice.CancelBtnClick(Sender: TObject);
begin
ModalResult := mrCancel;
end;
procedure TLevelChoice.FormShow(Sender: TObject);
begin
RefreshList;
end;
procedure TLevelChoice.LevelListClick(Sender: TObject);
var
LevelFile: string;
Level: TLevel;
begin
PlayBtn.Enabled := Assigned(LevelList.Selected);
PLoadLevel.Enabled := Assigned(LevelList.Selected);
if Assigned(LevelList.Selected) then
begin
LevelFile := Format(LVL_FILE, [LevelList.Selected.Caption]);
Level := TLevel.Create(LevelFile);
try
DrawLevelPreview(Level);
finally
FreeAndNil(Level);
end;
end
else
begin
ClearImage(PreviewImage, Color);
end;
end;
procedure TLevelChoice.LevelListChange(Sender: TObject; Item: TListItem;
Change: TItemChange);
begin
if Change = ctState then LevelListClick(self);
end;
procedure TLevelChoice.PRefreshListClick(Sender: TObject);
begin
RefreshList;
end;
procedure TLevelChoice.RefreshList;
var
s: TSearchRec;
Level: TLevel;
begin
LevelList.Clear;
// Levels auflisten
if FindFirst(Format(LVL_FILE, ['*']), faAnyFile, s) = 0 then
begin
repeat
with LevelList.Items.Add do
begin
Caption := Copy(s.Name, 1, Length(s.Name)-Length(LVL_EXT));
Level := TLevel.Create(LVL_PATH + s.Name);
if Level.CheckLevelIntegrity <> leNone then
ImageIndex := 2{Error}
else case Level.GameMode of
gmNormal: ImageIndex := 0{Normal};
gmDiagonal: ImageIndex := 1{Diagonal};
gmUndefined: ImageIndex := 2{Error};
end;
end;
until FindNext(s) <> 0;
FindClose(s);
end;
end;
procedure TLevelChoice.FormCreate(Sender: TObject);
begin
if not ForceDirectories(ExtractFilePath(Application.ExeName) + LVL_PATH) then
begin
MessageDlg(Format(LNG_COULD_NOT_CREATE_DIR, [LVL_PATH]), mtError, [mbOK], 0);
end;
end;
end.