GameObject.cpp

#include "GameObject.h"

GameObject::GameObject(string type, std::shared_ptr<Geometry> geometry, std::shared_ptr<Material> material)
{
	_type = type;

	//optionals
	_parent = nullptr;
	_physicsModel = nullptr; 

	_appearance = new Appearance(geometry, material);
	_transform = new Transform();
}

GameObject::~GameObject()
{
	_parent = nullptr;
	if (_appearance) delete(_appearance);
	if (_physicsModel) delete(_physicsModel);
	if (_transform) delete(_transform);
}

void GameObject::Update(float t)
{
	//update the physics
	if (_physicsModel) _physicsModel->Update(t);

	// Calculate world matrix
	XMMATRIX scale = XMMatrixScaling(_transform->GetScale().x, _transform->GetScale().y, _transform->GetScale().z);
	XMMATRIX rotation = XMMatrixRotationQuaternion(XMVectorSet(_transform->GetOrientation().GetVector().x, _transform->GetOrientation().GetVector().y, _transform->GetOrientation().GetVector().z, _transform->GetOrientation().n));
	XMMATRIX translation = XMMatrixTranslation(_transform->GetPosition().x, _transform->GetPosition().y, _transform->GetPosition().z);

	XMStoreFloat4x4(&_world, scale * rotation * translation);

	if (_parent != nullptr)	XMStoreFloat4x4(&_world, this->GetWorldMatrix() * _parent->GetWorldMatrix());
}

void GameObject::Draw(ID3D11DeviceContext * pImmediateContext)
{
	// NOTE: We are assuming that the constant buffers and all other draw setup has already taken place

	// Set vertex and index buffers
	Geometry geometry = _appearance->GetGeometryData();
	pImmediateContext->IASetVertexBuffers(0, 1, &geometry.vertexBuffer, &geometry.vertexBufferStride, &geometry.vertexBufferOffset);
	pImmediateContext->IASetIndexBuffer(geometry.indexBuffer, DXGI_FORMAT_R16_UINT, 0);

	pImmediateContext->DrawIndexed(geometry.numberOfIndices, 0, 0);
}