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// Copyright (c) 2011 The Native Client Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXAMPLES_PONG_PONG_H_
#define EXAMPLES_PONG_PONG_H_
#include <string>
#include "ppapi/c/pp_file_info.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/size.h"
namespace pp {
class FileIO;
class FileRef;
class FileSystem;
class Rect;
} // namespace pp
namespace pong {
class View;
// The Instance class. One of these exists for each instance of your NaCl
// module on the web page. The browser will ask the Module object to create
// a new Instance for each occurrence of the <embed> tag that has these
// attributes:
// type="application/x-nacl"
// nacl="pong.nmf"
class Pong : public pp::Instance {
public:
explicit Pong(PP_Instance instance);
virtual ~Pong();
// Open the file (if available) that stores the game scores.
virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]);
// Update the graphics context to the new size, and regenerate |pixel_buffer_|
// to fit the new size as well.
virtual void DidChangeView(const pp::Rect& position, const pp::Rect& clip);
virtual bool HandleInputEvent(const pp::InputEvent& event);
// Called by the browser to handle the postMessage() call in Javascript.
// The message in this case is expected to contain the string 'update', or
// 'resetScore' in order to invoke either the Update or ResetScore function
// respectively.
virtual void HandleMessage(const pp::Var& var_message);
void Update();
void UpdateScoreFromBuffer();
void UpdateScoreFromFile();
void WriteScoreToFile();
PP_FileInfo file_info_;
int32_t bytes_to_read_;
int64_t offset_;
pp::FileIO* file_io_;
pp::FileRef* file_ref_;
pp::FileSystem* file_system_;
std::string bytes_buffer_;
private:
Pong(const Pong&); // Disallow copy
enum BallDirection {
kUpDirection = 0,
kDownDirection
};
void ResetPositions();
void ResetScore();
BallDirection RightPaddleNextMove() const;
void UpdateScoreDisplay();
View* view_;
pp::Rect left_paddle_;
pp::Rect right_paddle_;
pp::Rect ball_;
pp::Rect court_;
int32_t delta_x_;
int32_t delta_y_;
int player_score_;
int computer_score_;
};
} // namespace pong
#endif // EXAMPLES_PONG_PONG_H_
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