Nom : Kars.jpg Affichages : 170 Taille : 11,0 Ko
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program Kars;
 
{$FRAME_WIDTH  256}
{$FRAME_HEIGHT 256}
 
uses
 Flash8;
 
const
  Radius = 10;
  TRACE_COUNT = 100;
 
type
  TCircle = class(MovieClip)
    constructor Create(Parent: MovieClip; Name:string; x, y, r: Double);
  end;
 
  TWheel = class(MovieClip)
	constructor Create(Car: MovieClip; i, x, y: Integer);
  end;
 
  TTrace = class(MovieClip)
	constructor Create(i: Integer);
  end;
 
  TCar = class(MovieClip)
    Speed: Double;
    Wheels: Array[0..3] of TWheel;
    Traces: Array[0..TRACE_COUNT] of TTrace;
    constructor Create;
    procedure onEnterFrame; override;
  end;
 
var
  Help   : TextField;
  Circle : TCircle;
 
constructor TCircle.Create(Parent: MovieClip; Name: string; x, y, r: Double);
var
  a : Double;
  c1,s1: Double;
  c2,s2: Double;
  r2: Double;
begin
  inherited Create(Parent, Name, 1);
  _x := x;
  _y := y;
  a := 3.14/4;
  c1 := cos(a);
  s1 := sin(a);
  a  := 3.14 / 8;
  c2 := cos(a);
  s2 := sin(a);
  r2 := 11 * r / 10;
  beginFill($FF0000);
  moveTo(0, r);
  curveTo( r2*s2, r2*c2, r*s1, r*c1);
  curveTo( r2*c2, r2*s2, r,0);
  curveTo( r2*c2,-r2*s2, r*s1,-r*c1);
  curveTo( r2*s2,-r2*c2, 0,-r);
  curveTo(-r2*s2,-r2*c2,-r*c1,-r*s1);
  curveTo(-r2*c2,-r2*s2, -r,0);
  curveTo(-r2*c2, r2*s2,-r*c1, r*s1);
  curveTo(-r2*s2, r2*c2, 0,r);
  endFill();
end;
 
constructor TWheel.Create(Car: MovieClip; i, x, y: Integer);
begin
  inherited Create(Car, 'Wheel' + IntToStr(i), i);
  _x := x;
  _y := y;
  beginFill(0);
  moveTo(-2,-1);
  lineTo(+2,-1);
  lineTo(+2,+1);
  lineTo(-2,+1);
  endFill();
end;
 
constructor TTrace.Create(i :Integer);
begin
  inherited Create(nil, 'Trace' + IntToStr(i), i - 1000);
  _x := 200;
  _y := 123;
  _alpha := 100 * i  / TRACE_COUNT;
  _rotation := -90;
  beginFill(0);
  moveTo(-2+1,-1-5);
  lineTo(+2+1,-1-5);
  lineTo(+2+1,+1-5);
  lineTo(-2+1,+1-5);
  endFill();
  beginFill(0);
  moveTo(-2+1,-1+5);
  lineTo(+2+1,-1+5);
  lineTo(+2+1,+1+5);
  lineTo(-2+1,+1+5);
  endFill();
end;
 
constructor TCar.Create;
var
  i : Integer;
begin
  inherited Create(nil, 'Car', 5);
  TCircle.Create(Self, 'Driver', 10, 0, 2);
  _x := 200;
  _y := 123;
  _rotation := -90;
  beginFill($0000FF);
  moveTo(- 2,-5);
  lineTo(+18,-4);
  lineTo(+18,+4);
  lineTo(- 2,+5);
  endFill();
  Wheels[0] := TWheel.Create(Self,-1,  1, -5);
  Wheels[1] := TWheel.Create(Self, 3, 12, -5);
  Wheels[2] := TWheel.Create(Self, 4, 12, +5);
  Wheels[3] := TWheel.Create(Self, 5,  1, +5);
  for i := 0 to TRACE_COUNT do
  begin
    Traces[i] := TTrace.Create(i);
  end;
  Speed := 0;
end;
 
procedure TCar.onEnterFrame;
var
  dx, dy, r: Double;
  i: Integer;
begin
  if (Key.isDown(KEY_UP)) then
    Speed := Speed + 1; //acceleration en avant
  if (Key.isDown(KEY_DOWN)) then
    Speed := Speed - 0.2; //acceleration en arrière
  r := 0;
  if (Key.isDown(KEY_LEFT)) then
  begin
	  _rotation := _rotation - 8; //_rotation affecte directement le carré bleu
    r := -30;
  end;
  if (Key.isDown(KEY_RIGHT)) then
  begin
    _rotation := _rotation + 8;
    r := +30;
  end;
 
  if Speed <> 0 then
  begin
    Help._visible := False;
 
    if (Math.abs(Speed)>1) then Speed := Speed * 0.9; // limite l'acceleration
 
    if Speed < 0 then r := -r;
    Wheels[1]._rotation := r;
    Wheels[2]._rotation := r;
 
    dx := Math.cos(_rotation*(Math.PI/180))*Speed; // donne la position x future en fonction de la vitesse
    dy := Math.sin(_rotation*(Math.PI/180))*Speed; // donne la position y future en fonction de la vitesse
    if (Circle.hitTest(_x + dx, _y + dy, true)) // collision avec le rond
    then begin
   	  Speed := Speed * -0.5; // reaction apres collision, rebond du carré bleu
    end else begin
      dx := _x + dx;
      dy := _y + dy;
      if dx < -5 then dx := 256;
      if dx > 261 then dx := 0;
      if dy < -5 then dy := 256;
      if dy > 261 then dy := 0;
      _x := dx;
      _y := dy;
    end;
  end;
  for i := 1 to TRACE_COUNT do
  begin
    Traces[i - 1]._x := Traces[i]._x;
    Traces[i - 1]._y := Traces[i]._y;
    Traces[i - 1]._rotation := Traces[i]._rotation;
  end;
  Traces[TRACE_COUNT]._x := _x;
  Traces[TRACE_COUNT]._y := _y;
  Traces[TRACE_COUNT]._rotation := _rotation;
end;
 
 
begin
  Help := TextField.Create(_root, 'help', 100, 20, 50, 220, 21);
  Help.Text := "Utilisez les flèches pour déplacer le véhicule";
  Circle := TCircle.Create(_root, 'Spot', Stage.Width /2, Stage.Height - 100, Radius);
  TCar.Create();
end.