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Stephen Elliott

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Posted: 18th Aug 2017 18:46 Edited at: 18th Aug 2017 20:40

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I'm not sure why this keyboard check for the Esc Key isn't working? Any ideas?

This works in BASIC

+ Code Snippet

// set window properties
SetWindowTitle( "TestKeyBug" )
SetWindowSize( 1024, 768, 1 )

// set display properties
SetVirtualResolution( 1024, 768 )
SetScissor( 0,0,0,0 )
UseNewDefaultFonts( 1 )

repeat
	
    Print( ScreenFPS() )
    Sync()
    
until GetRawKeyPressed(27) = 1  // Esc

But the loop won't work in C++

+ Code Snippet

	do
	{
		agk::Print(ScreenFPS());
		agk::Sync();

	} while (agk::GetRawKeyPressed(27) != 1 );

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easter bunny

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Playing: Dota 2

Posted: 19th Aug 2017 05:55 Edited at: 19th Aug 2017 05:58

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What happens if you put agk:: Print(agk::GetRawKeyPressed(27)); in your loop? What does it print out?
On a side note, it's better practice to make your loop something like this:

+ Code Snippet

bool looping=true;
do
{
    agk::Print(ScreenFPS());
    if(agk::GetRawKeyPressed(27)==1){looping=false;}
    agk::Sync();
 
} while (looping);

Since you can then use other conditions to break out of the loop too (like pressing an exit button)

I had to put the space in agk:: Print because it was parsing the : P as a smiley face

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Stephen Elliott

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Posted: 19th Aug 2017 10:07 Edited at: 19th Aug 2017 10:40

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Good idea about using a bool for looping - thanks.

Quote: "
What happens if you put agk:: Print(agk::GetRawKeyPressed(27)); in your loop? What does it print out?
"

It prints 0 and a key press doesn't change that. Your code doesn't work either unfortunately.

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Stephen Elliott

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Posted: 19th Aug 2017 10:31 Edited at: 19th Aug 2017 10:33

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Here's the full test program:

// includes
#include "MoveShips.h"

// namespace
using namespace AGK;

app App;

void app::Begin(void)
{
	agk::SetWindowTitle("Move Ship");
	agk::SetWindowSize(1024, 768, 1);
	agk::SetDisplayAspect(1024 / 768);
	agk::SetVirtualResolution(1024, 768);
	agk::SetClearColor(150, 170, 204);			// light blue
	agk::SetVSync(1);
	agk::SetScissor(0, 0, 0, 0);
	agk::UseNewDefaultFonts(1);					// nicer font
	agk::SetRawMouseVisible(0);					// hide mouse pointer

// create sprites
	agk::LoadImage(1, "ship.png");

agk::CreateSprite(1, 1);
	agk::CreateSprite(2, 1);
	agk::CreateSprite(3, 1);

agk::SetSpriteOffset(1, 0.0f, 0.0f);
	agk::SetSpriteOffset(2, 0.0f, 0.0f);
	agk::SetSpriteOffset(3, 0.0f, 0.0f);
}

int app::Loop (void)
{
	// get bounds for full screen
	float LeftEdge  = agk::GetScreenBoundsLeft();
	float RightEdge = agk::GetScreenBoundsRight();
	float xPos = LeftEdge - 64.0f;
	int Key = 0;

bool Looping = true;
	do
	{
		agk::Print(agk::ScreenFPS());
		// position sprites
		agk::SetSpritePosition(1, xPos, 152.0);
		agk::SetSpritePosition(2, xPos, 352.0);
		agk::SetSpritePosition(3, xPos, 552.0);
		agk::Sync();
		xPos += 2.0;

if(agk::GetRawKeyPressed(27) == 1) Looping = false;
		if (xPos > RightEdge) Looping = false;

} while (Looping);

return 1;
}

void app::End(void)
{
	// free resources
	if(agk::GetImageExists(1)  == 1) agk::DeleteImage(1);
	if(agk::GetSpriteExists(1) == 1) agk::DeleteSprite(1);
	if(agk::GetSpriteExists(2) == 1) agk::DeleteSprite(2);
	if(agk::GetSpriteExists(3) == 1) agk::DeleteSprite(3);
}

+ Code Snippet

// includes
#include "MoveShips.h"

// namespace
using namespace AGK;

app App;

void app::Begin(void)
{
	agk::SetWindowTitle("Move Ship");
	agk::SetWindowSize(1024, 768, 1);
	agk::SetDisplayAspect(1024 / 768);
	agk::SetVirtualResolution(1024, 768);
	agk::SetClearColor(150, 170, 204);			// light blue
	agk::SetVSync(1);
	agk::SetScissor(0, 0, 0, 0);
	agk::UseNewDefaultFonts(1);					// nicer font
	agk::SetRawMouseVisible(0);					// hide mouse pointer

	// create sprites
	agk::LoadImage(1, "ship.png");

	agk::CreateSprite(1, 1);
	agk::CreateSprite(2, 1);
	agk::CreateSprite(3, 1);

	agk::SetSpriteOffset(1, 0.0f, 0.0f);
	agk::SetSpriteOffset(2, 0.0f, 0.0f);
	agk::SetSpriteOffset(3, 0.0f, 0.0f);
}

int app::Loop (void)
{
	// get bounds for full screen
	float LeftEdge  = agk::GetScreenBoundsLeft();
	float RightEdge = agk::GetScreenBoundsRight();
	float xPos = LeftEdge - 64.0f;
	int Key = 0;

	bool Looping = true;
	do
	{
		agk::Print(agk::ScreenFPS());
		// position sprites
		agk::SetSpritePosition(1, xPos, 152.0);
		agk::SetSpritePosition(2, xPos, 352.0);
		agk::SetSpritePosition(3, xPos, 552.0);
		agk::Sync();
		xPos += 2.0;

		if(agk::GetRawKeyPressed(27) == 1) Looping = false;
		if (xPos > RightEdge) Looping = false;

	} while (Looping);

	return 1;
}

void app::End(void)
{
	// free resources
	if(agk::GetImageExists(1)  == 1) agk::DeleteImage(1);
	if(agk::GetSpriteExists(1) == 1) agk::DeleteSprite(1);
	if(agk::GetSpriteExists(2) == 1) agk::DeleteSprite(2);
	if(agk::GetSpriteExists(3) == 1) agk::DeleteSprite(3);
}

MoveShips.h

+ Code Snippet

#ifndef _H_AGK_TEMPLATE_
#define _H_AGK_TEMPLATE_

// Link to GDK libraries
#include "AGK.h"

#define DEVICE_WIDTH 1024
#define DEVICE_HEIGHT 768
#define DEVICE_POS_X 32
#define DEVICE_POS_Y 32
#define FULLSCREEN false

// used to make a more unique folder for the write path
#define COMPANY_NAME "My Company"

// Global values for the app
class app
{
	public:

		// constructor
		app() { memset ( this, 0, sizeof(app)); }

		// main app functions - mike to experiment with a derived class for this..
		void Begin( void );
		int Loop( void );
		void End( void );
};

extern app App;

#endif

// Allow us to use the LoadImage function name
#ifdef LoadImage
 #undef LoadImage
#endif

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easter bunny

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Joined: 20th Nov 2012

Playing: Dota 2

Posted: 19th Aug 2017 10:52 Edited at: 19th Aug 2017 10:54

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Hm that's very strange...

Maybe try this and see what it prints out

+ Code Snippet

for(int k=0; k<255; k++)
{
  if(agk::GetRawKeyState(k)) { agk::Print(k); }
  if(agk::GetRawKeyReleased(k)) { agk::Print(k); }
  if(agk::GetRawKeyPRessed(k)) { agk::Print(k); }
}

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Stephen Elliott

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Posted: 19th Aug 2017 10:59

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It doesn't print anything.

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jhanson

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Posted: 19th Aug 2017 13:07

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Does changing it from GetRawKeyPressed to GetRawKeyReleased or GetRawKeyState help? I've heard of some web browsers being inconsistent in their handling of KeyPress events for the escape key, so maybe something similar is going on here.

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Stephen Elliott

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Posted: 19th Aug 2017 13:46 Edited at: 19th Aug 2017 13:49

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No luck using any of those commands.

Remember my loop code in BASIC above, with GetRawKeyPressed(27) = 1 works - but NOT IN C++

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Stephen Elliott

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Posted: 19th Aug 2017 17:38 Edited at: 19th Aug 2017 23:46

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I think I'll use AppGameKit BASIC, at least for now.

A quick conversion in BASIC works.

// Move Ships Test

//#option_explicit

SetWindowTitle("Move Ship")
SetWindowSize(1024, 768, 1)
SetDisplayAspect(1024 / 768)
SetVirtualResolution(1024, 768)
SetClearColor(150, 170, 204)			// light blue
SetVSync(1)
SetScissor(0, 0, 0, 0)
//UseNewDefaultFonts(1)					// nicer font
SetRawMouseVisible(0)					// hide mouse pointer

// create sprites
LoadImage(1, "ship.png")

CreateSprite(1, 1)
CreateSprite(2, 1)
CreateSprite(3, 1)

SetSpriteOffset(1, 0.0, 0.0)
SetSpriteOffset(2, 0.0, 0.0)
SetSpriteOffset(3, 0.0, 0.0)

// get bounds for full screen
LeftEdge#  = GetScreenBoundsLeft()
RightEdge# = GetScreenBoundsRight()

xPos# = LeftEdge# - 64.0

Looping = 1
repeat
		Print(ScreenFPS())
		// position sprites
		SetSpritePosition(1, xPos#, 152.0)
		SetSpritePosition(2, xPos#, 352.0)
		SetSpritePosition(3, xPos#, 552.0)
		Sync()
		xPos# = xPos# + 2.0

if GetRawKeyPressed(27) = 1 Then Looping = 0
		if xPos# > RightEdge# Then Looping = 0

until not Looping

// free resources
if GetImageExists(1)  = 1 Then DeleteImage(1)
if GetSpriteExists(1) = 1 Then DeleteSprite(1)
if GetSpriteExists(2) = 1 Then DeleteSprite(2)
if GetSpriteExists(3) = 1 Then DeleteSprite(3)

+ Code Snippet

// Move Ships Test

//#option_explicit

SetWindowTitle("Move Ship")
SetWindowSize(1024, 768, 1)
SetDisplayAspect(1024 / 768)
SetVirtualResolution(1024, 768)
SetClearColor(150, 170, 204)			// light blue
SetVSync(1)
SetScissor(0, 0, 0, 0)
//UseNewDefaultFonts(1)					// nicer font
SetRawMouseVisible(0)					// hide mouse pointer

// create sprites
LoadImage(1, "ship.png")

CreateSprite(1, 1)
CreateSprite(2, 1)
CreateSprite(3, 1)

SetSpriteOffset(1, 0.0, 0.0)
SetSpriteOffset(2, 0.0, 0.0)
SetSpriteOffset(3, 0.0, 0.0)

// get bounds for full screen
LeftEdge#  = GetScreenBoundsLeft()
RightEdge# = GetScreenBoundsRight()

xPos# = LeftEdge# - 64.0

Looping = 1
repeat
		Print(ScreenFPS())
		// position sprites
		SetSpritePosition(1, xPos#, 152.0)
		SetSpritePosition(2, xPos#, 352.0)
		SetSpritePosition(3, xPos#, 552.0)
		Sync()
		xPos# = xPos# + 2.0

		if GetRawKeyPressed(27) = 1 Then Looping = 0
		if xPos# > RightEdge# Then Looping = 0

until not Looping 

// free resources
if GetImageExists(1)  = 1 Then DeleteImage(1)
if GetSpriteExists(1) = 1 Then DeleteSprite(1)
if GetSpriteExists(2) = 1 Then DeleteSprite(2)
if GetSpriteExists(3) = 1 Then DeleteSprite(3)

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Preben

AGK Studio Developer

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Posted: 20th Aug 2017 11:41

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You got it wrong , you should not loop yourself inside app::Loop (void) , agk will do that for you , try this

+ Code Snippet

int app::Loop (void)
{
    agk::Print(agk::ScreenFPS());
    agk::Sync();
    if(agk::GetRawKeyPressed(27) == 1) PostQuitMessage(0);
}

best regards Preben Eriksen,

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Stephen Elliott

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Posted: 21st Aug 2017 23:20 Edited at: 22nd Aug 2017 00:37

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Ah, I see, Preben. had to re-think my code - works now. Thanks!

// includes
#include "MoveShips.h"

// namespace
using namespace AGK;

app App;

void app::Begin(void)
{
	agk::SetWindowTitle( "Move Ship" );
	agk::SetWindowSize( 1024, 768, 1 );
	agk::SetDisplayAspect( 1024 / 768 );
	agk::SetVirtualResolution( 1024, 768 );
	agk::SetClearColor( 150, 170, 204 );		// light blue
	agk::SetVSync(1);
	agk::SetScissor( 0, 0, 0, 0 );
	agk::UseNewDefaultFonts(1);					// nicer font
	agk::SetRawMouseVisible(0);					// hide mouse pointer

// create sprites
	agk::LoadImage( 1, "ship.png" );

agk::CreateSprite( 1, 1 );
	agk::CreateSprite( 2, 1 );
	agk::CreateSprite( 3, 1 );

agk::SetSpriteOffset( 1, 0.0f, 0.0f );
	agk::SetSpriteOffset( 2, 0.0f, 0.0f );
	agk::SetSpriteOffset( 3, 0.0f, 0.0f );

// get bounds for full screen
	float LeftEdge = agk::GetScreenBoundsLeft();

// position sprites
	float xPos = LeftEdge - 64.0f;
	agk::SetSpritePosition( 1, xPos, 152.0 );
	agk::SetSpritePosition( 2, xPos, 352.0 );
	agk::SetSpritePosition( 3, xPos, 552.0 );
}

int app::Loop(void)
{
	// get bounds for full screen
	float LeftEdge  = agk::GetScreenBoundsLeft();
	float RightEdge = agk::GetScreenBoundsRight();
	float xPos      = agk::GetSpriteX(1);
	int KeyEsc      = agk::GetRawKeyState(27);

agk::Print(agk::ScreenFPS());
	agk::Sync();

// re-position sprites
	xPos += 2.0;
	agk::SetSpritePosition(1, xPos, 152.0);
	agk::SetSpritePosition(2, xPos, 352.0);
	agk::SetSpritePosition(3, xPos, 552.0);

// break from program
	if ( xPos > RightEdge ) PostQuitMessage(0);
	if ( KeyEsc)            PostQuitMessage(0);

return 0;
}

void app::End(void)
{
	// free resources
	if (agk::GetImageExists(1) == 1) agk::DeleteImage(1);
	if (agk::GetSpriteExists(1) == 1) agk::DeleteSprite(1);
	if (agk::GetSpriteExists(2) == 1) agk::DeleteSprite(2);
	if (agk::GetSpriteExists(3) == 1) agk::DeleteSprite(3);
}

+ Code Snippet

// includes
#include "MoveShips.h"

// namespace
using namespace AGK;

app App;

void app::Begin(void)
{
	agk::SetWindowTitle( "Move Ship" );
	agk::SetWindowSize( 1024, 768, 1 );
	agk::SetDisplayAspect( 1024 / 768 );
	agk::SetVirtualResolution( 1024, 768 );
	agk::SetClearColor( 150, 170, 204 );		// light blue
	agk::SetVSync(1);
	agk::SetScissor( 0, 0, 0, 0 );
	agk::UseNewDefaultFonts(1);					// nicer font
	agk::SetRawMouseVisible(0);					// hide mouse pointer

	// create sprites
	agk::LoadImage( 1, "ship.png" );

	agk::CreateSprite( 1, 1 );
	agk::CreateSprite( 2, 1 );
	agk::CreateSprite( 3, 1 );

	agk::SetSpriteOffset( 1, 0.0f, 0.0f );
	agk::SetSpriteOffset( 2, 0.0f, 0.0f );
	agk::SetSpriteOffset( 3, 0.0f, 0.0f );

	// get bounds for full screen
	float LeftEdge = agk::GetScreenBoundsLeft();

	// position sprites
	float xPos = LeftEdge - 64.0f;
	agk::SetSpritePosition( 1, xPos, 152.0 );
	agk::SetSpritePosition( 2, xPos, 352.0 );
	agk::SetSpritePosition( 3, xPos, 552.0 );
}

int app::Loop(void)
{
	// get bounds for full screen
	float LeftEdge  = agk::GetScreenBoundsLeft();
	float RightEdge = agk::GetScreenBoundsRight();
	float xPos      = agk::GetSpriteX(1);
	int KeyEsc      = agk::GetRawKeyState(27);

	agk::Print(agk::ScreenFPS());
	agk::Sync();

	// re-position sprites
	xPos += 2.0;
	agk::SetSpritePosition(1, xPos, 152.0);
	agk::SetSpritePosition(2, xPos, 352.0);
	agk::SetSpritePosition(3, xPos, 552.0);

	// break from program
	if ( xPos > RightEdge ) PostQuitMessage(0);
	if ( KeyEsc)            PostQuitMessage(0);

	return 0;
}

void app::End(void)
{
	// free resources
	if (agk::GetImageExists(1) == 1) agk::DeleteImage(1);
	if (agk::GetSpriteExists(1) == 1) agk::DeleteSprite(1);
	if (agk::GetSpriteExists(2) == 1) agk::DeleteSprite(2);
	if (agk::GetSpriteExists(3) == 1) agk::DeleteSprite(3);
}

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