crash

lazyfoo.net/24_-_Calculating_Frame_Rate/Project1.pas

@@ -134,7 +134,7 @@
         end;
 
         timeText := '';
-        WriteStr(timeText, 'Average Frames Per Second ', avgFPS:10:2);
+        WriteStr(timeText, 'Average Frames Per Second ', avgFPS: 10: 2);
         if not gFPSTextTexture.LoadFromRenderedText(gFont, timeText, textColor) then begin
           WriteLn('Unable to render FPS texture !');
         end;

lazyfoo.net/26_-_Motion/Project1.pas

@@ -27,8 +27,6 @@
   capTimer, fpsTimer: TLTimer;
   myDot: Tdot;
 
-  timeText: string;
-  avgFPS: single;
   frameTicks: uint32;
 
   function init: boolean;
@@ -73,7 +71,7 @@
   var
     sucess: boolean = True;
   begin
-    gDotTexture.LoadFromFile('dot.bmp');
+    gDotTexture.LoadFromFile('dot.bmp', $FF, $FF, $FF);
     if gDotTexture = nil then begin
       WriteLn('Failed to load dot texture! SDL_ttf Error: ');
       sucess := False;
@@ -125,7 +123,7 @@
 
         myDot.move;
 
-        SDL_SetRenderDrawColor(gRenderer, $FF, $FF, $FF, $FF);
+        SDL_SetRenderDrawColor(gRenderer, $00, $9F, $00, $FF);
         SDL_RenderClear(gRenderer);
 
         myDot.render(gDotTexture);

lazyfoo.net/26_-_Motion/dot.pas

@@ -13,14 +13,13 @@ interface
   Tdot = class(TObject)
   private
     widht, Height, mPosX, mPosY, mVelX, mVelY: integer;
-
   public
   const
     DOT_WIDTH = 20;
     DOT_HEIGHT = 20;
     DOT_VEL = 10;
     constructor Create(Awidht, Aheigth: integer);
-    procedure HandleEvent(e: TSDL_Event);
+    procedure HandleEvent(var e: TSDL_Event);
     procedure move;
     procedure render(tex: TLTexture);
   end;
@@ -39,7 +38,7 @@ constructor Tdot.Create(Awidht, Aheigth: integer);
   Height := Aheigth;
 end;
 
-procedure Tdot.HandleEvent(e: TSDL_Event);
+procedure Tdot.HandleEvent(var e: TSDL_Event);
 begin
   case e.type_ of
     SDL_KEYDOWN: begin

lazyfoo.net/27_-_Collision_Detection/Project1.lpi

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="12"/>
+    <General>
+      <Flags>
+        <MainUnitHasCreateFormStatements Value="False"/>
+        <MainUnitHasTitleStatement Value="False"/>
+        <MainUnitHasScaledStatement Value="False"/>
+      </Flags>
+      <SessionStorage Value="InProjectDir"/>
+      <Title Value="Project1"/>
+      <UseAppBundle Value="False"/>
+      <ResourceType Value="res"/>
+    </General>
+    <BuildModes>
+      <Item Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+      <UseFileFilters Value="True"/>
+    </PublishOptions>
+    <RunParams>
+      <FormatVersion Value="2"/>
+    </RunParams>
+    <RequiredPackages>
+      <Item>
+        <PackageName Value="SDL2_Package"/>
+      </Item>
+    </RequiredPackages>
+    <Units>
+      <Unit>
+        <Filename Value="Project1.pas"/>
+        <IsPartOfProject Value="True"/>
+      </Unit>
+      <Unit>
+        <Filename Value="ltexture.pas"/>
+        <IsPartOfProject Value="True"/>
+        <UnitName Value="LTexture"/>
+      </Unit>
+      <Unit>
+        <Filename Value="dot.pas"/>
+        <IsPartOfProject Value="True"/>
+      </Unit>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target>
+      <Filename Value="Project1"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)"/>
+      <OtherUnitFiles Value="../units"/>
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+    </SearchPaths>
+    <Linking>
+      <Debugging>
+        <DebugInfoType Value="dsDwarf3"/>
+      </Debugging>
+    </Linking>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions>
+      <Item>
+        <Name Value="EAbort"/>
+      </Item>
+      <Item>
+        <Name Value="ECodetoolError"/>
+      </Item>
+      <Item>
+        <Name Value="EFOpenError"/>
+      </Item>
+    </Exceptions>
+  </Debugging>
+</CONFIG>

lazyfoo.net/27_-_Collision_Detection/Project1.pas

@@ -0,0 +1,145 @@
+program Project1;
+
+// https://github.com/PascalGameDevelopment/SDL2-for-Pascal
+
+uses
+  sdl2,
+  sdl2_image,
+  ctypes,
+  LTexture,
+  LTimer,
+  dot;
+
+const
+  Screen_Widht = 640;
+  Screen_Height = 480;
+  Screen_FPS = 60;
+  Screen_Tick_Per_Frame = 1000 div Screen_FPS;
+
+var
+  gWindow: PSDL_Window;
+  gRenderer: PSDL_Renderer;
+
+  quit: boolean = False;
+  e: TSDL_Event;
+
+  gDotTexture: TLTexture;
+  capTimer, fpsTimer: TLTimer;
+  myDot: Tdot;
+
+  frameTicks: uint32;
+  wall:TSDL_Rect  = (x: 300; y: 40; w: 40; h: 400);
+
+  function init: boolean;
+  var
+    sucess: boolean = True;
+    imgFlags: cint32 = 0;
+  begin
+    sucess := True;
+    if SDL_Init(SDL_INIT_VIDEO) < 0 then begin
+      WriteLn('SDL could not initialize! SDL_Error: ', SDL_GetError);
+      sucess := False;
+    end else begin
+      gWindow := SDL_CreateWindow('SDL Tuorial', SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, Screen_Widht, Screen_Height, SDL_WINDOW_SHOWN);
+      if gWindow = nil then begin
+        WriteLn('Window could not be created! SDL_Error: ', SDL_GetError);
+        sucess := False;
+      end else begin
+        gRenderer := SDL_CreateRenderer(gWindow, -1, SDL_RENDERER_ACCELERATED);
+        if gRenderer = nil then begin
+          WriteLn('Renderer could not be created! SDL Error: ', SDL_GetError);
+          sucess := False;
+        end else begin
+          SDL_SetRenderDrawColor(gRenderer, $FF, $FF, $FF, $FF);
+
+          if (IMG_Init(imgFlags) and imgFlags) <> 0 then begin
+            WriteLn('SDL_image could not initialize! SDL_image Error: ', IMG_GetError);
+            sucess := False;
+          end;
+
+        end;
+      end;
+    end;
+    Result := sucess;
+
+    gDotTexture := TLTexture.Create(gRenderer);
+    fpsTimer := TLTimer.Create;
+    capTimer := TLTimer.Create;
+    myDot := Tdot.Create(Screen_Widht, Screen_Height);
+  end;
+
+  function loadMedia: boolean;
+  var
+    sucess: boolean = True;
+  begin
+    gDotTexture.LoadFromFile('dot.bmp',$FF,$FF,$FF);
+    if gDotTexture = nil then begin
+      WriteLn('Failed to load dot texture! SDL_ttf Error: ');
+      sucess := False;
+    end;
+
+    Result := sucess;
+  end;
+
+  procedure Close;
+  begin
+    gDotTexture.Free;
+    fpsTimer.Free;
+    capTimer.Free;
+    myDot.Free;
+
+    SDL_DestroyRenderer(gRenderer);
+    SDL_DestroyWindow(gWindow);
+    gWindow := nil;
+    gRenderer := nil;
+
+    IMG_Quit;
+    SDL_Quit;
+  end;
+
+begin
+  if not init then begin
+    WriteLn('Failed to initialize');
+  end else begin
+    if not loadMedia then begin
+      WriteLn('Failed to load media');
+    end else begin
+      fpsTimer.start;
+      while not quit do begin
+        while SDL_PollEvent(@e) <> 0 do begin
+          case e.type_ of
+            SDL_KEYDOWN: begin
+              case e.key.keysym.sym of
+                SDLK_ESCAPE: begin
+                  quit := True;
+                end;
+              end;
+            end;
+            SDL_QUITEV: begin
+              quit := True;
+            end;
+          end;
+          myDot.HandleEvent(e);
+        end;
+
+        myDot.move(wall);
+
+        SDL_SetRenderDrawColor(gRenderer, $00, $80, $00, $FF);
+        SDL_RenderClear(gRenderer);
+
+        SDL_SetRenderDrawColor(gRenderer, $80, $40, $00, $FF);
+        SDL_RenderFillRect(gRenderer, @wall);
+
+        myDot.render(gDotTexture);
+
+        SDL_RenderPresent(gRenderer);
+
+        frameTicks := capTimer.getTicks;
+        if frameTicks < Screen_Tick_Per_Frame then begin
+          SDL_Delay(Screen_Tick_Per_Frame - frameTicks);
+        end;
+      end;
+    end;
+  end;
+  Close;
+end.