这个想法是你必须拍摄面板。因此面板将被设置到屏幕顶部的随机位置,然后向下移动到屏幕底部。您必须在面板到达底部之前用形状拍摄面板。但我不知道如何测试创建的形状是否在面板的位置以重置面板。目前这是我的代码,但 if 测试为假。
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, StdCtrls, jpeg;
const
MaxRays=100;
RayStep=8;
type
TForm1 = class(TForm)
Panel1: TPanel;
Timer1: TTimer;
Timer2: TTimer;
Button1: TButton;
Shape1: TShape;
Timer3: TTimer;
Image1: TImage;
procedure Timer2Timer(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure FormMouseWheelDown(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
procedure FormMouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
procedure Timer3Timer(Sender: TObject);
procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
private
{ Private declarations }
Rays:array[0..MaxRays-1] of TShape;
public
procedure StartPanelAnimation1;
procedure DoPanelAnimationStep1;
function PanelAnimationComplete1: Boolean;
{ Public declarations }
end;
var
Form1: TForm1;
implementation
var key : char;
{$R *.dfm}
{ TForm1 }
{ TForm1 }
procedure TForm1.DoPanelAnimationStep1;
begin
Panel1.Top := Panel1.Top+1;
end;
function TForm1.PanelAnimationComplete1: Boolean;
begin
Result := Panel1.Top=512;
end;
procedure TForm1.StartPanelAnimation1;
begin
Panel1.Top := 0;
Timer1.Interval := 1;
Timer1.Enabled := True;
end;
procedure TForm1.Timer2Timer(Sender: TObject);
begin
DoPanelAnimationStep1;
if PanelAnimationComplete1 then
StartPanelAnimation1;
if (shape1.Top < panel1.Top) and (shape1.Left < panel1.Left+104) and (shape1.Left > panel1.Left) then
begin
startpanelanimation1;
sleep(10);
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
button1.Hide;
key := 'a';
timer2.Enabled := true;
StartPanelAnimation1;
end;
procedure TForm1.FormActivate(Sender: TObject);
begin
shape1.Visible := false;
timer2.Enabled := false;
end;
procedure TForm1.FormMouseWheelDown(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
begin
image1.Left := image1.Left-10;
end;
procedure TForm1.FormMouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
begin
image1.Left := image1.Left+10;
end;
procedure TForm1.Timer3Timer(Sender: TObject);
var
i:integer;
begin
for i:=0 to MaxRays-1 do
if Rays[i]<>nil then
begin
Rays[i].Top:=Rays[i].Top-RayStep;
if Rays[i].Top<0 then FreeAndNil(Rays[i]);
end;
end;
procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
i:integer;
begin
i:=0;
while (i<MaxRays) and (Rays[i]<>nil) do inc(i);
if i<MaxRays then
begin
Rays[i]:=TShape.Create(Self);
Rays[i].Shape:=stEllipse;
Rays[i].Pen.Color:=clRed;
Rays[i].Pen.Style:=psSolid;
Rays[i].Brush.Color:=clYellow;
Rays[i].Brush.Style:=bsSolid;
Rays[i].SetBounds(X-4,Y-20,9,41);
Rays[i].Parent:=Self;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
var
i:integer;
begin
for i:=0 to MaxRays-1 do Rays[i]:=nil;
end;
end.
我已经尝试过@NGLN 所说的,但是当我单击鼠标按钮时,形状像 10 像素一样移动然后停止,当它停止时,正常向下移动的面板现在在屏幕顶部像疯了一样移动,改变了它的左侧位置,但顶部位置保持 0。
这是新代码
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, StdCtrls, jpeg;
const
MaxRays=100;
RayStep=8;
type
TForm1 = class(TForm)
Panel1: TPanel;
Timer1: TTimer;
Timer2: TTimer;
Button1: TButton;
Shape1: TShape;
Timer3: TTimer;
Image1: TImage;
Timer4: TTimer;
procedure Timer2Timer(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure FormMouseWheelDown(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
procedure FormMouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
procedure Timer3Timer(Sender: TObject);
procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
Rays:array[0..MaxRays-1] of TShape;
public
procedure StartPanelAnimation1;
procedure DoPanelAnimationStep1;
function PanelAnimationComplete1: Boolean;
function EllipticShapeIntersectsPanel(Shape: TShape; Panel: TPanel): Boolean;
{ Public declarations }
end;
var
Form1: TForm1;
implementation
var key : char;
{$R *.dfm}
{ TForm1 }
{ TForm1 }
procedure TForm1.DoPanelAnimationStep1;
begin
Panel1.Top := Panel1.Top+1;
end;
function TForm1.PanelAnimationComplete1: Boolean;
begin
Result := Panel1.Top=512;
end;
procedure TForm1.StartPanelAnimation1;
var left : integer;
begin
Panel1.Top := 0;
randomize;
left := random(clientwidth-105);
panel1.Left := left;
Timer1.Interval := 1;
Timer1.Enabled := True;
end;
procedure TForm1.Timer2Timer(Sender: TObject);
var I: Integer;
begin
DoPanelAnimationStep1;
if PanelAnimationComplete1 then
StartPanelAnimation1;
I := 0;
while (Rays[I] <> nil) and (I < MaxRays) do
begin
if EllipticShapeIntersectsPanel(Rays[I], Panel1) then
Inc(I);
startpanelanimation1;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
button1.Hide;
key := 'a';
timer2.Enabled := true;
StartPanelAnimation1;
end;
procedure TForm1.FormActivate(Sender: TObject);
begin
shape1.Visible := false;
timer2.Enabled := false;
end;
procedure TForm1.FormMouseWheelDown(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
begin
image1.Left := image1.Left-10;
end;
procedure TForm1.FormMouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
begin
image1.Left := image1.Left+10;
end;
procedure TForm1.Timer3Timer(Sender: TObject);
var
i:integer;
begin
for i:=0 to MaxRays-1 do
if Rays[i]<>nil then
begin
Rays[i].Top:=Rays[i].Top-RayStep;
if Rays[i].Top<0 then FreeAndNil(Rays[i]);
end;
end;
procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
i:integer;
left : integer;
top : integer;
begin
i:=0;
while (i<MaxRays) and (Rays[i]<>nil) do i:= i+10;
if i<MaxRays then
begin
Rays[i]:=TShape.Create(Self);
Rays[i].Shape:=strectangle;;
Rays[i].Pen.Color:=clRed;
Rays[i].Pen.Style:=psSolid;
Rays[i].Brush.Color:=clred;
Rays[i].Brush.Style:=bsSolid;
left := image1.Left+38;
top := image1.Top-30;
Rays[i].SetBounds(left,top,9,33);
Rays[i].Parent:=Self;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Screen.Cursor:=crNone;
end;
function TForm1.EllipticShapeIntersectsPanel(Shape: TShape;
Panel: TPanel): Boolean;
var
ShapeRgn: HRGN;
begin
with Shape.BoundsRect do
ShapeRgn := CreateEllipticRgn(Left, Top, Right, Bottom);
try
Result := RectInRegion(ShapeRgn, Panel.BoundsRect);
finally
DeleteObject(ShapeRgn);
end;
end;
end.