/*
 * $Id$
 */

/*
 * Harbour video test code
 *
 * Program originally by Brian Dukes <bdukes@yellowthingy.co.uk>
 *
 * Redirect the output of this program to a file.
 *
 * ie: vidtest > results
 *
 */

#include "box.ch"

#ifndef __CLIP__
   #ifdef FlagShip
      #xtranslate hb_secondsCPU( [<x>] ) => secondsCPU( [<x>] )
   #else
      #ifndef __HARBOUR__
         #xtranslate hb_secondsCPU( [<x>] ) => Seconds( [<x>] )
      #endif
   #endif
#endif

#ifndef __HARBOUR__
   #xtranslate hb_eol() => ( Chr( 13 ) + Chr( 10 ) )
#endif

#command ? => OutStd( hb_eol() ); OutErr( hb_eol() )
#command ? <xx,...> => OutStd( <xx>, hb_eol() ); OutErr( <xx>, hb_eol() )

#ifdef FlagShip

STATIC nDispCount := 0

#xtranslate DispBegin() => iif( ( ++nDispCount ) == 1, DispBegin( NIL ), )
#xtranslate DispEnd()   => iif( nDispCount > 0 .AND. ( --nDispCount ) == 0, DispEnd( NIL ), )

#endif

PROCEDURE Main()

   LOCAL aResult := {}

   Initialise()   // Initialise Screen Display

   // Perform Tests
   AAdd( aResult, StaticText()   )
   AAdd( aResult, WindowBounce() )
   AAdd( aResult, ColourBoxes()  )

   // Display Results
   Summary( aResult )

   RETURN

// initialise the screen

STATIC FUNCTION Initialise()

   SET COLOUR TO "W+/BG"
   DispBox( 0, 0, MaxRow(), MaxCol(), Replicate( Chr(176 ),9 ), "BG/B" )

   RETURN NIL

// repeatedly display a string in the same position
// this test determines how well the Screen i/o subsystem is
// caching screen writes.

STATIC FUNCTION StaticText()

   LOCAL cResult
   LOCAL r       := MaxRow() / 2
   LOCAL str     := Version()
   LOCAL c
   LOCAL i
   LOCAL nEnd
   LOCAL nStart  := hb_secondsCPU()

   str := "Hello World - From " + Left( str, At( " ", str ) - 1 )
   c   := ( MaxCol() - Len( str ) ) / 2

   FOR i := 1 TO 5000
      @ r, c SAY str
   NEXT

   nEnd := hb_secondsCPU()

   cResult := "StaticText:  Iterations=5000, Time=" + hb_ntos( nEnd - nStart ) + ;
      "secs,  Average FPS = " + hb_ntos( Round( 5000 / ( nEnd - nStart ), 0 ) ) + " FPS"

   RETURN cResult

// Bounce a window around the screen a few thousand times
// timing the duration, and determining the average FPS

STATIC FUNCTION WindowBounce()

   LOCAL cResult
   LOCAL nBoxes  := Min( MaxRow(), MaxCol() - 7 ) - 6 /* keep the box in bounds */
   LOCAL x       := Array( NBOXES )
   LOCAL y       := Array( NBOXES )
   LOCAL dx      := Array( NBOXES )
   LOCAL dy      := Array( NBOXES )
   LOCAL clr     := Array( NBOXES )
   LOCAL scr     := Array( NBOXES )
   LOCAL nFrames := 0
   LOCAL nStart
   LOCAL nEnd
   LOCAL i
   LOCAL aCol    := { "N", "B", "G", "BG", "R", "RB", "GR", "W", ;
                      "N*", "B*", "G*", "BG*", "R*", "RB*", "GR*", "W*" }

   // initialise boxes
   FOR i := 1 TO nBoxes
      x[ i ]   := i
      y[ i ]   := i - 1
      dx[ i ]  := -1
      dy[ i ]  := 1
      clr[ i ] := "W+/" + aCol[ ( i - 1 ) % 16 + 1 ]
   NEXT

   nStart := hb_secondsCPU()
   DispBegin()

   DO WHILE nFrames < 5000

      FOR i := 1 TO nBoxes
         scr[ i ] := SaveScreen( x[ i ], y[ i ], x[ i ] + 6, y[ i ] + 12 )
         @ x[ i ], y[ i ], x[ i ] + 6, y[ i ] + 12 BOX B_SINGLE + " " COLOR clr[ i ]
      NEXT

      DispEnd()
      DispBegin()

      FOR i := nBoxes TO 1 STEP -1
         // remove boxes from screen
         RestScreen( x[ i ], y[ i ], x[ i ] + 6, y[ i ] + 12, scr[ i ] )

         // move
         x[ i ] += dx[ i ]
         y[ i ] += dy[ i ]
         IF x[ i ] <= 0 .OR. x[ i ] + 6 >= MaxRow()
            dx[ i ] := - dx[ i ]
         ENDIF
         IF y[ i ] <= 0 .OR. y[ i ] + 12 >= MaxCol()
            dy[ i ] := - dy[ i ]
         ENDIF
      next i

      ++nFrames
   ENDDO

   DispEnd()
   nEnd := hb_secondsCPU()

   cResult := "WindowBounce:Iterations=" + hb_ntos( nFrames ) + ", Time=" + hb_ntos( nEnd - nStart ) + ;
      "secs,  Average FPS = " + hb_ntos( Round( nFrames / ( nEnd - nStart ), 0 ) ) + " FPS"

   RETURN cResult

// Display colour boxes,  repeatedly, this will determine
// how efficiently the screen i/o subsystem is caching the
// dispbegin()'s and dispend()'s

STATIC FUNCTION ColourBoxes()

   LOCAL cResult
   LOCAL nFrames := 0
   LOCAL nStart
   LOCAL nEnd
   LOCAL i
   LOCAL nDir    := 1
   LOCAL nDepth  := 0
   LOCAL aCol    := { "N", "B", "G", "BG", "R", "RB", "GR", "W", ;
                      "N*", "B*", "G*", "BG*", "R*", "RB*", "GR*", "W*" }

   nStart := hb_secondsCPU()
   // display boxes to screen

   DO WHILE nFrames < 5000
      IF nDir == 1
         DispBegin()
      ELSE
         DispEnd()
      ENDIF

      nDepth += nDir

      IF nDepth > 4 .OR. nDepth < 1
         nDir := - nDir
      ENDIF
      i := nFrames % 16 + 1
      DispBox( 5, 10, MaxRow() - 5, MaxCol() - 10, ;
         Replicate( Chr( i + 64 ), 9 ), ;
         "W+/" + aCol[ i ] )
      ++nFrames
   ENDDO

   // remove any nested dispbegins()
   DO WHILE nDepth > 0
      DispEnd()
      nDepth--
   ENDDO

   nEnd := hb_secondsCPU()

   cResult := "ColourBoxes: Iterations=" + hb_ntos( nFrames ) + ", Time=" + hb_ntos( nEnd - nStart ) + ;
      "secs,  Average FPS = " + hb_ntos( Round( nFrames / ( nEnd - nStart ), 0 ) ) + " FPS"

   RETURN cResult

// display results

STATIC FUNCTION Summary( aResult )

   LOCAL i

   CLS
   ? "Resolution:  " + hb_ntos( MaxRow() + 1 ) + " x " + hb_ntos( MaxCol() + 1 ) + " " + Version()
   FOR i := 1 TO Len( aResult )
      ? aResult[ i ]
   NEXT
   ?
   ? "press any key to continue"
   Inkey( 0 )

   RETURN aResult