#include "booster.h"

Booster::Booster(Vector3f tpos, BOOST_TYPE ttype)
{
	pos = tpos;
	type = ttype;
}

Booster::~Booster()
{

}

Vector3f Booster::GetPosition()
{
	return pos;
}

BOOST_TYPE Booster::GetType()
{
	return type;
}

bool Booster::GetAvailability()
{
	return available;
}

void Booster::SetAvailability(bool value)
{
	available = value;
}

void Booster::RenderBillboard(TextureAtlas& textureAtlas,  Shader& shader, Transformation tran, Player player)
{
	float width = 1.0f;
	float height = 1.7f;

	Matrix4 mat4 = tran.GetMatrix();

	Vector3f DiffCam = GetPosition() - player.GetPosition();
	Vector3f UpCam = Vector3f(mat4.Get12(), mat4.Get22(), mat4.Get32());

	Vector3f CrossA = DiffCam.Cross(UpCam);
	Vector3f CrossB = DiffCam.Cross(CrossA);
	CrossA.Normalize();
	CrossB.Normalize();

	Vector3f playerPosition = GetPosition() + Vector3f(0.f, 0.f, 0.f);


	Vector3f v1 = (playerPosition + CrossA * 0.5 * width + CrossB * 0.5 * height);
	Vector3f v2 = (playerPosition - CrossA * 0.5 * width + CrossB * 0.5 * height);
	Vector3f v3 = (playerPosition + CrossA * 0.5 * width - CrossB * 0.5 * height);
	Vector3f v4 = (playerPosition - CrossA * 0.5 * width - CrossB * 0.5 * height);

	float u, v, w, h;

	shader.Use();
	textureAtlas.Bind();
	textureAtlas.TextureIndexToCoord(0, u, v, w, h);

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_ADD);

	glLoadMatrixf(tran.GetMatrix().GetInternalValues());
	glBegin(GL_QUADS);
	glTexCoord2f(u, v); glVertex3f(v1.x, v1.y, v1.z);
	glTexCoord2f(u + w, v); glVertex3f(v2.x, v2.y, v2.z);
	glTexCoord2f(u + w, v + h); glVertex3f(v3.x, v3.y, v3.z);
	glTexCoord2f(u, v + h); glVertex3f(v4.x, v4.y, v4.z);

	glEnd();

	glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR);
	glBlendEquation(GL_FUNC_SUBTRACT);
	glDisable(GL_BLEND);

	shader.Disable();
}