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| TSpaceObject = class
Image:TImage;
procedure Process; virtual;
constructor create(x, y, width, height:Integer; filename:string; container:Twincontrol);
destructor Destroy;
end;
TAsteroid = class(TSpaceObject)
speedy:Integer;
procedure Process; override;
constructor create( x, speed, width, height:Integer; container:Twincontrol);
end;
TSpaceObjects = class (Tlist<TSpaceObject>)
destructor Destroy;
end;
TMySpaceShip = class(TSpaceObject)
speedx:Integer;
procedure process;
procedure MoveLeft;
procedure MoveRight;
constructor Create(filename: string; container:TWincontrol);
end;
var
Form1: TForm1;
objects:TSpaceObjects;
SpaceShip:TMySpaceShip;
health:integer;
implementation
{$R *.dfm}
{ TSpaceObject }
constructor TSpaceObject.create(x, y, width, height: Integer; filename: string; container:TWincontrol);
begin
Image:=TImage.Create(container);
Image.Parent:=container;
Image.Left:=x;
Image.Top:=y;
Image.Width:=width;
Image.Height:=height;
Image.Picture.LoadFromFile('sprites/'+filename);
end;
destructor TSpaceObject.Destroy;
begin
Image.Free;
end;
procedure TSpaceObject.Process;
begin
Image.Top:=Image.Top+10;
end;
procedure TForm1.AsteroindsTimerTimer(Sender: TObject);
var size:integer;
begin
size:=30+random(60);
Objects.Add(TAsteroid.create(random(form1.Width), 5+random(30), size, size,form1));
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Randomize;
Objects:=TSpaceObjects.create;
spaceship:=TMySpaceShip.Create('fly.png', form1);
Process.Enabled:=True;
scores.Enabled:=true;
AsteroindsTimer.Enabled:=True;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
Objects.Free;
end;
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;Shift: TShiftState);
begin
if Key=VK_LEFT then
spaceship.MoveLeft;
if Key=VK_RIGHT then
SpaceShip.MoveRight;
end;
procedure TForm1.ProcessTimer(Sender: TObject);
var o:TSpaceObject;
begin
SpaceShip.process;
for o in objects do
o.Process;
end;
procedure TForm1.scoresTimer(Sender: TObject);
begin
label2.caption := IntToStr(StrToInt(label2.caption) + 1);
end;
{ TSpaceObjects }
destructor TSpaceObjects.Destroy;
var o:TSpaceObject;
begin
for o in self do
o.free;
inherited Free;
end;
{ TMySpaceShip }
constructor TMySpaceShip.Create(filename: string; container:TWincontrol);
begin
inherited Create(container.Width div 2 - 69, container.Height-165, 100, 136,filename,container);
speedx:=0;
end;
procedure TMySpaceShip.MoveLeft;
begin
if Abs(speedx)<20 then
speedx:=speedx -3;
end;
procedure TMySpaceShip.MoveRight;
begin
if Abs(speedx)<20 then
speedx:=speedx+3;
end;
procedure TMySpaceShip.process;
begin
if (word(getkeystate(VK_LEFT)) and $8000)<>0 then Moveleft;
if (word(getkeystate(VK_right)) and $8000)<>0 then Moveright;
if (Image.left<10) and (speedx<0) then
speedx:=0;
if (Image.left>Image.parent.width-image.width-10) and (speedx>0) then
speedx:=0;
Image.left:=Image.Left+speedx;
speedx:=trunc(speedx / 1.1);
end;
{ TAsteroid }
constructor TAsteroid.create(x,speed, width, height: Integer; container: Twincontrol);
begin
inherited create(x, -height,width,height, 'asteroid.png', container);
Image.Stretch:=True;
speedy:=speed;
end;
procedure TAsteroid.Process;
begin
if image.top>Image.parent.Height then
begin
objects.Remove(self);
free;
Exit;
end;
Image.Top:=Image.Top+speedy;
end;
end. |
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