89 lines
1.8 KiB
C++
89 lines
1.8 KiB
C++
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#ifndef EFFECT_HPP
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#define EFFECT_HPP
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/Graphics.hpp>
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#include <cassert>
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#include <string>
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////////////////////////////////////////////////////////////
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// Base class for effects
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////////////////////////////////////////////////////////////
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class Effect : public sf::Drawable
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{
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public:
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virtual ~Effect()
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{
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}
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static void setFont(const sf::Font& font)
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{
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s_font = &font;
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}
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const std::string& getName() const
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{
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return m_name;
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}
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void load()
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{
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m_isLoaded = sf::Shader::isAvailable() && onLoad();
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}
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void update(float time, float x, float y)
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{
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if (m_isLoaded)
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onUpdate(time, x, y);
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}
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void draw(sf::RenderTarget& target, sf::RenderStates states) const
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{
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if (m_isLoaded)
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{
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onDraw(target, states);
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}
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else
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{
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sf::Text error("Shader not\nsupported", getFont());
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error.setPosition(320.f, 200.f);
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error.setCharacterSize(36);
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target.draw(error, states);
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}
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}
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protected:
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Effect(const std::string& name) :
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m_name(name),
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m_isLoaded(false)
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{
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}
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static const sf::Font& getFont()
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{
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assert(s_font != NULL);
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return *s_font;
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}
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private:
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// Virtual functions to be implemented in derived effects
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virtual bool onLoad() = 0;
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virtual void onUpdate(float time, float x, float y) = 0;
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virtual void onDraw(sf::RenderTarget& target, sf::RenderStates states) const = 0;
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private:
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std::string m_name;
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bool m_isLoaded;
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static const sf::Font* s_font;
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};
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#endif // EFFECT_HPP
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