HW image version of this little stupid thing

[grymmjack]

I added a toggle for your example to make it a little easier to understand, @SMcNeill

Now it has a toggle and a message as well as the box is semi-transparent to demonstrate further the concept of "layers", also made the red block bigger and changed `_LIMIT` to `60`also added a `_BLEND` (default) and `_DONTBLEND` example to the box with the text "HARDWARE" like @TerryRitchie used in his example.

Press `SPACE` to switch the `_DISPLAYORDER`, `ENTER` to pause/unpause, and `ESC` to exit.

Code: (Select All)

 SCREEN 0 'I'm going to use a text only screen

mode = -1

paused = 0

tempHWscreen = _NEWIMAGE(64*2, 40*2, 32)

_DEST tempHWscreen

CLS , &HCCFF0000 'just color that little 64x40 block of screen RED

_BLEND

COLOR &HFFFFFFFF: _PRINTMODE _KEEPBACKGROUND: _PRINTSTRING (35, 25), "HARDWARE"

_DONTBLEND

COLOR 0: _PRINTMODE _FILLBACKGROUND: _PRINTSTRING (20, 45), CHR$(219) + " HARDWARE " + CHR$(219)

HWscreen = _COPYIMAGE(tempHWscreen, 33)

_FREEIMAGE tempHWscreen

xdirection = 1: ydirection = 1

DO

    k = _KEYHIT

    IF mode THEN

        _DISPLAYORDER _SOFTWARE, _HARDWARE

    ELSE

        _DISPLAYORDER _HARDWARE, _SOFTWARE

    END IF

    CLS

    COLOR 11

    IF paused THEN p$ = "Unpause" ELSE p$ = "Pause"

    PRINT "[SPACE]=Change _DISPLAYORDER, [ENTER]="+p$+", [ESC]=Quit";

    IF paused THEN PRINT "   * PAUSED *";

    PRINT

    FOR i = 0 TO 16

        COLOR i, 8 - INT(i / 2)

        PRINT "Screen 0 Colors!  This is COLOR "; i, 8 - INT(i / 2)

    NEXT

    PRINT

    COLOR 14

    IF mode THEN

        PRINT "_DISPLAYORDER _SOFTWARE, _HARDWARE (DEFAULT hardware on top of software)"

    ELSE

        PRINT "_DISPLAYORDER _HARDWARE, _SOFTWARE (software on top of hardware)"

    END IF

    IF NOT paused THEN

        x = x + xdirection: y = y + ydirection

        IF x < 0 OR x > 640 THEN xdirection = -xdirection

        IF y < 0 OR y > 400 THEN ydirection = -ydirection

    END IF

    _PUTIMAGE (x, y), HWscreen

    _DISPLAY

    _LIMIT 60

    IF k=32 THEN mode = NOT mode

    IF k=13 THEN paused = NOT paused

LOOP UNTIL k=27

SYSTEM

I have to ask.. why `_DONTBLEND` looks like it's blending, and `_BLEND` doesn't? Also, in a HW image it looks like when `_DONTBLEND` color 0 = transparent? why is that?