BasicCube

February 12, 2008

/**
* This source code is part of the samples for "Game Programming in C++: Start to Finish".
*
* @Author : Erik Yuzwa
* @Date   : 09/01/2005
* @Version: 1.0
*
* @Goal: The purpose of this code sample is to demonstrate how to create a spinning/rotating
* cube using a display list.
*/
#include "PeonMain.h"

#define TEX_0 1

class MainApp : public peon::IApplication
{
private:
	GLuint m_uTriDisplayList;
	float  m_fZRotation;
	float  m_fYRotation;

public:
	MainApp();
	~MainApp();

	bool onLoadWorld();
	void onUnloadWorld();
	void onUpdateWorld(float);
	void onRenderWorld();

};

int main( int argc, char* argv[] )
{
	new peon::EngineCore();

	if(!peon::EngineCore::getSingleton().loadEngine("BasicCube", "data\\system.ini"))
	{
		return -1;
	}

	MainApp* pApp = new MainApp();

	peon::EngineCore::getSingleton().setApplication( pApp );

	return( peon::EngineCore::getSingleton().runEngine() );

}

MainApp::MainApp()
{
}

MainApp::~MainApp()
{
}

bool MainApp::onLoadWorld()
{
	//similar to texture handle creation, create a display list handle
    m_uTriDisplayList = glGenLists(1);

    //compile a basic cube within this new list
    glNewList( m_uTriDisplayList, GL_COMPILE );

    glBegin(GL_QUADS);
		// Front Face
		glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
		glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
		// Back Face
		glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
		glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
		// Top Face
		glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);
		glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
		glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
		// Bottom Face
		glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
		glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
		glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
		// Right face
		glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
		glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
		// Left Face
		glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
		glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
		glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
		glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);

    glEnd();

    //you are finished with the display list. Close it off
    glEndList();

	m_fZRotation = 0.0f;
	m_fYRotation = 0.0f;

	peon::EngineCore::getSingleton().getRenderer()->loadTexture(TEX_0, "data\\textures\\sdl_logo.bmp");

	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
	glShadeModel( GL_SMOOTH );

	return true;
}

void MainApp::onUnloadWorld()
{
	glDeleteLists(m_uTriDisplayList, 1);

}

void MainApp::onUpdateWorld(float fElapsedTime )
{
	m_fZRotation += 8.0f * fElapsedTime;
	m_fYRotation += 8.0f * fElapsedTime;

}

void MainApp::onRenderWorld()
{
	peon::SceneRenderer* pRenderer = peon::EngineCore::getSingleton().getRenderer();
	pRenderer->setTexture( TEX_0 );

	glPushMatrix();
	glLoadIdentity();
	glTranslatef(0.0f, 0.0f, -5.0f);

	glRotatef(m_fYRotation, 0.0f, 1.0f, 0.0f);
	glRotatef(m_fZRotation, 0.0f, 0.0f, 1.0f );

	glCallList( m_uTriDisplayList );
	glPopMatrix();

}

Downloads

The source code is available here: PeonSDK-BasicCube

Posted in peon-sdk