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#ifndef INPUT_H_0FB34C42
#define INPUT_H_0FB34C42
#include <SDL.h>
#include <vector>
/**
* Helper class that detects when a key or mouse button is newly pressed.
*/
class Input {
public:
Input()
{
const Uint8* s = SDL_GetKeyboardState(&length_);
curstate_.assign(s, s + length_);
prevstate_ = curstate_;
prevmouse_ = SDL_GetMouseState(&mousePos_.x(), &mousePos_.y());
prevMousePos_ = mousePos_;
curmouse_ = prevmouse_;
}
void tick()
{
const Uint8* keystate = SDL_GetKeyboardState(nullptr);
prevstate_ = std::move(curstate_);
curstate_.assign(keystate, keystate + length_);
prevmouse_ = curmouse_;
prevMousePos_ = mousePos_;
curmouse_ = SDL_GetMouseState(&mousePos_.x(), &mousePos_.y());
}
bool wasPressed(int scancode) const
{
return curstate_.at(scancode) && !prevstate_.at(scancode);
}
bool wasClicked(Uint32 mask) const
{
return (curmouse_ & SDL_BUTTON(mask)) && !(prevmouse_ & SDL_BUTTON(mask));
}
bool wasReleased(Uint32 mask) const
{
return !(curmouse_ & SDL_BUTTON(mask)) && (prevmouse_ & SDL_BUTTON(mask));
}
bool isClicked(Uint32 mask) const
{
return curmouse_ & SDL_BUTTON(mask);
}
const vec2i& getMousePos() const
{
return mousePos_;
}
bool hasMouseMoved() const
{
return mousePos_ != prevMousePos_;
}
private:
int length_;
std::vector<Uint8> curstate_;
std::vector<Uint8> prevstate_;
Uint32 curmouse_;
Uint32 prevmouse_;
vec2i mousePos_;
vec2i prevMousePos_;
};
#endif /* end of include guard: INPUT_H_0FB34C42 */
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