zengl/Zengl_SRC/demos/FreePascal/08 - Sprite Engine/demo08.pas

program demo08;

{$I zglCustomConfig.cfg}

uses
  zgl_screen,
  zgl_window,
  zgl_timers,
  zgl_keyboard,
  zgl_render_2d,
  zgl_fx,
  zgl_textures,
  zgl_textures_png,
  zgl_sprite_2d,
  zgl_sengine_2d,
  zgl_primitives_2d,
  zgl_font,
  zgl_text,
  zgl_types,
  zgl_utils
  ;

type
  zglPMikuSprite = ^zglTMikuSprite;
  zglTMikuSprite = record
    // RU: Îáÿçàòåëüíàÿ ÷àñòü íîâîãî òèïà ñïðàéòà.
    // EN: New type should start with this.
    Sprite: zglTSprite2D;

    // RU: Íîâûå ïàðàìåòðû.
    // EN: New params.
    Speed : zglTPoint2D;
  end;

var
  dirRes   : UTF8String {$IFNDEF MACOSX} = '../data/' {$ENDIF};
  fntMain  : Byte;
  texLogo  : zglPTexture;
  texMiku  : zglPTexture;
  time     : Integer;
  sengine2d: zglTSEngine2D;
  TimeStart: Byte;
  TimeMiku : Byte;

// Miku
procedure MikuInit(var Miku: zglTMikuSprite);
begin
  with Miku, Miku.Sprite do
    begin
      X := 800 + random(800);
      Y := random(600 - 128);

      // RU: Çàäàåì ñêîðîñòü äâèæåíèÿ.  Íî ýòî âîîáùå áðåä, åñëè ìû äåëàåì óïðàâëÿåìîãî ïåðñîíàæà
      // EN: Set the moving speed.
      Speed.X := - random(10) / 5 - 0.5;
      Speed.Y := (random(10) - 5) / 5;
    end;
end;

procedure MikuDraw(var Miku: zglTMikuSprite);
begin
  with Miku.Sprite do
    asprite2d_Draw(Texture, X, Y, W, H, Angle, Round(Frame), Alpha, FxFlags);
end;

procedure MikuProc(var Miku: zglTMikuSprite);
begin
  with Miku, Miku.Sprite do
    begin
      X := X + Speed.X;
      Y := Y + Speed.Y;
      Frame := Frame + (abs(speed.X) + abs(speed.Y)) / 25;
      if Frame > 8 Then
        Frame := 1;

      // RU: Åñëè ñïðàéò âûõîäèò çà ïðåäåëû ïî X, ñðàçó æå óäàëÿåì åãî.
      // EN: Delete the sprite if it goes beyond X.
      if X < -128 Then sengine2d_DelSprite(ID);

      // RU: Åñëè ñïðàéò âûõîäèò çà ïðåäåëû ïî Y, ñòàâèì åãî â î÷åðåäü íà óäàëåíèå.
      // EN: Add sprite to queue for delete if it goes beyond Y.
      if Y < -128 Then Destroy := TRUE;
      if Y > 600  Then Destroy := TRUE;
    end;
end;

procedure MikuFree(var Miku: zglTMikuSprite);
begin
end;

// RU: Äîáàâèòü 100 ñïðàéòîâ.
// EN: Add 100 sprites.
procedure AddMiku;
  var
    i: Integer;
begin
  // RU: Ïðè äîáàâëåíèè ñïðàéòà â ìåíåäæåð ñïðàéòîâ óêàçûâàåòñÿ òåêñòóðà, ñëîé(ïîëîæåíèå ïî Z) è óêàçàòåëè íà îñíîâíûå ôóíêöèè - Èíèöèàëèçàöèÿ, Ðåíäåð, Îáðàáîòêà è Óíè÷òîæåíèå.
  // EN: For adding sprite to sprite engine must be set next parameters: texture, layer(Z-coordinate) and pointers to Initialization, Render, Process and Destroy functions.
  for i := 1 to 100 do
    sengine2d_AddCustom(texMiku, SizeOf(zglTMikuSprite), random(10), @MikuInit, @MikuDraw, @MikuProc, @MikuFree);
end;

// RU: Óäàëèòü 100 ñïðàéòîâ.
// EN: Delete 100 sprites.
procedure DelMiku;
  var
    i: Integer;
begin
  // RU: Óäàëèì 100 ñïðàéòîâ ñî ñëó÷àéíûì ID.
  // EN: Delete 100 sprites with random ID.
  for i := 1 to 100 do
    sengine2d_DelSprite(random(sengine2d.Count));
end;

procedure Init;
  var
    i: Integer;
begin
  texLogo := tex_LoadFromFile(dirRes + 'zengl.png');

  texMiku := tex_LoadFromFile(dirRes + 'miku.png');
  tex_SetFrameSize(texMiku, 128, 128);

  // RU: Óñòàíàâëèâàåì òåêóùèì ìåíåäæåðîì ñïðàéòîâ ñâîé.
  // EN: Set own sprite engine as current.
  sengine2d_Set(@sengine2d);

  // RU: Ñîçäàäèì 1000 ñïðàéòîâ Miku-chan :)
  // EN: Create 1000 sprites of Miku-chan :)
//  for i := 0 to 9 do
//    AddMiku();

  fntMain := font_LoadFromFile(dirRes + 'font.zfi');
  setTextScale(15, fntMain);
end;

procedure Draw;
begin
//  batch2d_Begin();
  // RU: Ðèñóåì âñå ñïðàéòû íàõîäÿùèåñÿ â òåêóùåì ñïðàéòîâîì ìåíåäæåðå.
  // EN: Render all sprites contained in current sprite engine.
  if time > 255 Then
    sengine2d_Draw();

  if time <= 255 Then
    ssprite2d_Draw(texLogo, 400 - 256, 300 - 128, 512, 256, 0, time)
  else
    if time < 510 Then
      begin
        pr2d_Rect(0, 0, 800, 600, $000000, 510 - time, PR2D_FILL);
        ssprite2d_Draw(texLogo, 400 - 256, 300 - 128, 512, 256, 0, 510 - time);
      end;

  if time > 255 Then
    begin
      pr2d_Rect(0, 0, 256, 64, $000000, 200, PR2D_FILL);
      text_Draw(fntMain, 0, 0, 'FPS: ' + u_IntToStr(zgl_Get(RENDER_FPS)));
      text_Draw(fntMain, 0, 20, 'Sprites: ' + u_IntToStr(sengine2d.Count));
      text_Draw(fntMain, 0, 40, 'Up/Down - Add/Delete Miku :)');
    end;
//  batch2d_End();
end;

procedure Timer;
begin
  INC(time, 2);

  // RU: Âûïîëíÿåì îáðàáîòêó âñåõ ñïðàéòîâ â òåêóùåì ñïðàéòîâîì ìåíåäæåðå.
  // EN: Process all sprites contained in current sprite engine.
  sengine2d_Proc();

  // RU: Ïî íàæàòèþ ïðîáåëà î÷èñòèòü âñå ñïðàéòû.
  // EN: Delete all sprites if space was pressed.
  if key_Press(K_SPACE) Then sengine2d_ClearAll();
  if key_Press(K_UP) Then AddMiku();
  if key_Press(K_DOWN) Then DelMiku();

  key_ClearState();
end;

procedure Quit;
begin
  // RU: Î÷èùàåì ïàìÿòü îò ñîçäàííûõ ñïðàéòîâ.
  // EN: Free allocated memory for sprites.
  sengine2d_Set(@sengine2d);
  sengine2d_ClearAll();
end;

Begin
  randomize;

  TimeStart := timer_Add(@Timer, 16, Start);
  TimeMiku := timer_Add(@AddMiku, 1000, SleepToStart, 10);

  zgl_Reg(SYS_LOAD, @Init);
  zgl_Reg(SYS_DRAW, @Draw);
  zgl_Reg(SYS_EXIT, @Quit);

  wnd_SetCaption(utf8_Copy('08 - Sprite Engine'));

  zgl_Init();
End.