[Archived] AppGameKit Classic Chat->Accelerometer and Physics
J
Jna99 Joined: 3rd Nov 2005
Location: Portugal
Posted: 23rd Sep 2011 0:36
Hi all,

I'm trying to use the accelerometer commands together with physics but I can't seam to achieve it. The idea is to control the ball using the accelerometer and the ball should pick speed if the iphone in a steep angle. Can any one please help me?

p.s the images used in the code bellow come from the AppGameKit data folder

+ Code Snippet
#include "Main.h"

using namespace AGK;

app App;

int iIndex = 5;
int iTime = 100;

void app::Begin (void){

	agk::SetVirtualResolution ( 320, 480 );
	agk::EnableClearColor ( 0 );

	int backdrop = agk::CreateSprite ( agk::LoadImage ( "../Data/background1.jpg" ) );
	agk::LoadImage ( 2, "../Data/ball1.png" );

	agk::CreateSprite(5,2);
	agk::SetSpritePosition(5,50.0f, 0.0f);
	agk::SetSpriteSize(5,25.0f,25.0f);	
	agk::SetSpriteShape(5, 2 );
	agk::SetSpritePhysicsMass(5, 0.5f);
	agk::SetSpritePhysicsRestitution ( 5, 0.5f );
	agk::SetSpritePhysicsOn ( 5, 2 );

	agk::SetPhysicsGravity ( 1.5f, 1.5f );
}

void app::Loop(void){
	float x = agk::GetDirectionX ();
	float y = agk::GetDirectionY ();
	float speed = agk::GetDirectionSpeed() * 10;
	float angle = -90 + agk::GetDirectionAngle();


	x = (float) agk::GetSpriteX (5) + x + (speed * agk::Cos(angle));
	y = (float) agk::GetSpriteY (5) + y + (speed * agk::Sin(angle));

	agk::SetSpritePosition ( 5, x, y );
	
	agk::Sync();
}

void app::End(void){	
}
J
Jna99 Joined: 3rd Nov 2005
Location: Portugal
Posted: 23rd Sep 2011 1:27
Hi,

I've achived the efect but the ball always spins

here's the code

+ Code Snippet
#include "Main.h"

using namespace AGK;

app App;

int iIndex = 5;
int iTime = 100;
float speedRac = 0.0f;

void app::Begin (void){

	agk::SetVirtualResolution ( 320, 480 );
	agk::EnableClearColor ( 0 );

	int backdrop = agk::CreateSprite ( agk::LoadImage ( "../Data/background1.jpg" ) );
	agk::LoadImage ( 2, "../Data/ball1.png" );

	agk::CreateSprite(5,2);
	agk::SetSpritePosition(5,50.0f, 0.0f);
	agk::SetSpriteSize(5,25.0f,25.0f);	
	agk::SetSpriteShape(5, 2 );
	agk::SetSpritePhysicsMass(5, 1.5f);
	//agk::SetSpritePhysicsRestitution ( 5, 0.5f );
	agk::SetSpritePhysicsOn ( 5, 2 );


	agk::SetPhysicsGravity ( 1.5f, 1.5f );
	//agk::SetPhysicsDebugOn();
}

void app::Loop(void){

	float x = agk::GetDirectionX ();
	float y = agk::GetDirectionY ();
	float speed = agk::GetDirectionSpeed() * 200;
	float angle = -90 + agk::GetDirectionAngle();

	agk::Print(x);
	agk::Print(y);


	agk::SetSpritePhysicsImpulse( 5, x, y, speed * agk::Cos(angle), speed * agk::Sin(angle) );

	agk::Sync();
}

void app::End(void){	
}