www.pudn.com > ATimeToKill.rar > rocket.cpp

#include "rocket.h" 
 
CRocket::CRocket() 
{ 
	velocity = CVector(0.0, 0.0, 120.0); 
	acceleration = CVector(0.0, 0.0, 0.0); 
	distanceTravel = 0.0; 
	size = 1.0f; 
	isExplosion = false; 
 
	explosion = NULL; 
	explosionTex = new CTexture; 
 
	Load(); 
} 
 
CRocket::~CRocket() 
{ 
	if (explosion != NULL) 
	{ 
		explosion->KillSystem(); 
		delete [] explosion; 
		explosion = NULL; 
	} 
 
	if (explosionTex != NULL) 
	{ 
		delete explosionTex; 
		explosionTex = NULL; 
	} 
} 
 
void CRocket::SetupExplosionTexture() 
{ 
	glGenTextures(1, &explosionTex->texID); 
	glBindTexture(GL_TEXTURE_2D, explosionTex->texID); 
 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); 
	glTexImage2D(GL_TEXTURE_2D, 0, 4, explosionTex->width, explosionTex->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, explosionTex->data); 
	gluBuild2DMipmaps(GL_TEXTURE_2D, 4, explosionTex->width, explosionTex->height, GL_RGBA, GL_UNSIGNED_BYTE, explosionTex->data); 
} 
 
void CRocket::OnAnimate(scalar_t deltaTime) 
{ 
	float cosYaw = (float)cos(DEG2RAD(direction)); 
	float sinYaw = (float)sin(DEG2RAD(direction));  
	float sinPitch = (float)sin(DEG2RAD(pitch)); 
 
	float speed = velocity.z * deltaTime; 
 
	position.x += float(cosYaw)*speed; 
	position.y += float(sinPitch)*speed; 
	position.z += float(sinYaw)*speed; 
 
	distanceTravel += position.Length(); 
 
	if (isExplosion) 
		explosion->Update(deltaTime); 
 
	if (!isExplosion) 
	{ 
		if (distanceTravel >= 500000.0f) 
		{ 
			isExplosion = true; 
			velocity = CVector(0.0, 0.0, 0.0); 
			explosion = new CExplosion(10, position, 0.1, explosionTex->texID); 
		} 
	} 
 
 
} 
 
void CRocket::OnCollision(CObject *collisionObject) 
{ 
	if (!isExplosion) 
	{ 
		if (typeid(*collisionObject) == typeid(CTerrain)) 
		{ 
			if (((CTerrain*)collisionObject)->GetHeight(position.x, position.z) + size >= position.y) 
			{ 
				isExplosion = true; 
				velocity = CVector(0.0, 0.0, 0.0); 
				explosion = new CExplosion(500, position, 8.0, explosionTex->texID); 
				PlaySound(); 
			} 
		 
			// do explosion 
		} 
		if (typeid(*collisionObject) == typeid(COgroEnemy)) 
		{ 
			isExplosion = true; 
			velocity = CVector(0.0, 0.0, 0.0); 
			explosion = new CExplosion(500, position, 8.0, explosionTex->texID); 
			PlaySound(); 
		} 
		if (typeid(*collisionObject) == typeid(CSodEnemy)) 
		{ 
			isExplosion = true; 
			velocity = CVector(0.0, 0.0, 0.0); 
			explosion = new CExplosion(500, position, 8.0, explosionTex->texID); 
			PlaySound(); 
		} 
	} 
} 
 
void CRocket::OnDraw(CCamera *camera) 
{ 
	// if the rocket has not yet exploded, draw the rocket model 
	if (!isExplosion) 
	{ 
		glEnable(GL_TEXTURE_2D); 
		glColor3f(1.0, 1.0, 1.0); 
		glTranslatef(position.x, position.y, position.z); 
		glRotatef(-direction, 0.0, 1.0, 0.0); 
		glScalef(0.025f, 0.025f, 0.025f); 
		RenderFrame(0); 
		glDisable(GL_TEXTURE_2D); 
	} 
	// draw explosion 
	else 
	{ 
		glDisable(GL_FOG); 
		explosion->Render(); 
		glEnable(GL_FOG); 
	} 
} 
 
 
void CRocket::Load() 
{ 
	CMD2Model::Load("models\\rocketair.md2", "models\\rocket.pcx"); 
	explosionTex->LoadTexture("explosion.bmp"); 
	SetupExplosionTexture(); 
} 
 
void CRocket::Unload() 
{ 
} 
 
void CRocket::OnPrepare() 
{ 
	// perform collision detection from this entity with all other objects in world 
	if (!isExplosion) 
		ProcessCollisions(FindRoot()); 
 
	if (isExplosion) 
	{ 
		if (explosion->IsDead() && !audioSys->GetPerformance()->IsPlaying(entitySound->GetSegment(), NULL)) 
		{ 
			explosion->KillSystem(); 
			delete explosion; 
			explosion = NULL; 
			isExplosion = false; 
 
			isDead = true; 
		} 
	} 
}