engine/src/Components/Graphics/SpriteComponent.cpp at e46ffcfb9ae4b279dad1f00fdacb43b4920b544f · StarEngine/engine · GitHub

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#include "SpriteComponent.h"
#include "../../Objects/Object.h"
#include "../../Graphics/SpriteBatch.h"
#include "SpritesheetComponent.h"
#include "TextComponent.h"

namespace star
{
	SpriteComponent::SpriteComponent(
		const tstring& filepath,
		const tstring& spriteName,
		uint32 widthSegments,
		uint32 heightSegments
		)
		: BaseComponent()
		, m_WidthSegments(widthSegments)
		, m_HeightSegments(heightSegments)
		, m_CurrentWidthSegment(0)
		, m_CurrentHeightSegment(0)
		, m_FilePath(filepath)
		, m_SpriteName(spriteName)
		, m_SpriteInfo(nullptr)
	{
		m_SpriteInfo = new SpriteInfo();
	}

	void SpriteComponent::InitializeComponent()
	{
		if(m_pParentObject->HasComponent<SpriteSheetComponent>(this)
			|| m_pParentObject->HasComponent<TextComponent>(this))
		{
			ASSERT_LOG(false,
				_T("Object '") + m_pParentObject->GetName() +
				_T("': Can't add a SpriteComponent when already \
having a SpriteSheet- or TextComponent."), STARENGINE_LOG_TAG);
			m_pParentObject->RemoveComponent(this);
		}
		else
		{
			TextureManager::GetInstance()->LoadTexture(
				m_FilePath.GetFullPath(),
				m_SpriteName
				);

			m_Dimensions.x = TextureManager::GetInstance()->
				GetTextureDimensions(m_SpriteName).x /
				m_WidthSegments;
			m_Dimensions.y =  TextureManager::GetInstance()->
				GetTextureDimensions(m_SpriteName).y /
				m_HeightSegments;

			GetTransform()->SetDimensionsSafe(m_Dimensions);

			CreateUVCoords();
			FillSpriteInfo();
		}
	}

	void SpriteComponent::FillSpriteInfo()
	{
		m_SpriteInfo->textureID =
			TextureManager::GetInstance()->GetTextureID(m_SpriteName);
		m_SpriteInfo->vertices = vec2(m_Dimensions.x, m_Dimensions.y);
	}

	SpriteComponent::~SpriteComponent()
	{
		delete m_SpriteInfo;
	}

	void SpriteComponent::CreateUVCoords()
	{
		float32 startX =
			float32(m_CurrentWidthSegment) /
			float32(m_WidthSegments);
		float32 endX = 1.0f / m_WidthSegments;
		float32 startY =
			float32(m_CurrentHeightSegment) /
			float32(m_HeightSegments);
		float32 endY = 1.0f / m_HeightSegments;

		SetUVCoords(vec4(startX, startY, endX, endY));
	}

	void SpriteComponent::SetUVCoords(const vec4& coords)
	{
		m_SpriteInfo->uvCoords = coords;
	}

	void SpriteComponent::Draw()
	{
		m_SpriteInfo->transformPtr = GetTransform();
		SpriteBatch::GetInstance()->AddSpriteToQueue(m_SpriteInfo);
	}

	void SpriteComponent::Update(const Context & context)
	{
		//[COMMENT] Temp hotfix!
#ifdef ANDROID
		FillSpriteInfo();
#endif
	}

	bool SpriteComponent::CheckCulling(
		float left,
		float right,
		float top,
		float bottom
		) const
	{
		//Always draw hudObjects
		if(m_SpriteInfo->bIsHud)
		{
			return true;
		}

		float32 spriteWidth, spriteHeight;

		pos objectPos = GetTransform()->GetWorldPosition();

		if(m_SpriteInfo->bIsHud)
		{
			objectPos.x += left;
			objectPos.y += bottom;
		}

		spriteWidth = float32(GetWidth()) * GetTransform()->GetWorldScale().x;
		spriteHeight = float32(GetHeight()) * GetTransform()->GetWorldScale().y;
		float32 objRight = objectPos.x + spriteWidth;
		float32 objTop = objectPos.y + spriteHeight;

		return
			(objectPos.x <= right && objRight >= left)
			&&
			(objectPos.y <= top && objTop >= bottom);
	}

	const tstring& SpriteComponent::GetFilePath() const
	{
		return m_FilePath.GetPath();
	}

	const tstring& SpriteComponent::GetName() const
	{
		return m_SpriteName;
	}

	void SpriteComponent::SetCurrentSegment(uint32 widthSegment, uint32 heightSegment)
	{
		m_CurrentWidthSegment = widthSegment;
		m_CurrentHeightSegment = m_HeightSegments - heightSegment - 1;
		CreateUVCoords();
	}

	void SpriteComponent::SetColorMultiplier(const Color & color)
	{
		m_SpriteInfo->colorMultiplier = color;
	}

	void SpriteComponent::SetHUDOptionEnabled(bool enabled)
	{
		m_SpriteInfo->bIsHud = enabled;
	}

	bool SpriteComponent::IsHUDOptionEnabled() const
	{
		return m_SpriteInfo->bIsHud;
	}

	void SpriteComponent::SetTexture(
		const tstring& filepath,
		const tstring& spriteName,
		uint32 widthSegments,
		uint32 heightSegments
		)
	{
		m_Dimensions.x = 0;
		m_WidthSegments = widthSegments;
		m_CurrentWidthSegment = 0;
		m_Dimensions.y = 0;
		m_HeightSegments = heightSegments;
		m_CurrentHeightSegment = 0;
		m_FilePath = FilePath(filepath);
		m_SpriteName = spriteName;

		TextureManager::GetInstance()->LoadTexture(m_FilePath.GetFullPath(),m_SpriteName);
		m_Dimensions.x = TextureManager::GetInstance()->GetTextureDimensions(m_SpriteName).x / m_WidthSegments;
		m_Dimensions.y =  TextureManager::GetInstance()->GetTextureDimensions(m_SpriteName).y / m_HeightSegments;

		GetTransform()->SetDimensionsSafe(m_Dimensions);

		CreateUVCoords();
		FillSpriteInfo();
	}

}