core.h

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/*
    MIT License

    Copyright (c) 2018-2021, Alexey Dynda

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/
#ifndef _NANO_ENGINE_CORE_H_
#define _NANO_ENGINE_CORE_H_

#include "tiler.h"
#include "canvas/canvas.h"
#include <stdint.h>

#define ENGINE_DEFAULT_FPS (15)

typedef uint8_t (*TNanoEngineGetButtons)(void);

typedef void (*TLoopCallback)(void);


enum
{
    BUTTON_NONE = 0B00000000,
    BUTTON_DOWN = 0B00000001,
    BUTTON_LEFT = 0B00000010,
    BUTTON_RIGHT = 0B00000100,
    BUTTON_UP = 0B00001000,
    BUTTON_A = 0B00010000,
    BUTTON_B = 0B00100000,
    BUTTON_C = 0B01000000,
    BUTTON_CENTER = 0B10000000,
};

class NanoEngineInputs
{
protected:
    NanoEngineInputs(){};

public:
    static bool pressed(uint8_t buttons);

    static bool notPressed(uint8_t buttons);

    static bool clicked(uint8_t buttons);

    static uint8_t buttonsState()
    {
        return m_onButtons();
    }

    static void connectCustomKeys(TNanoEngineGetButtons handler);

    static void connectZKeypad(uint8_t analogPin);

    static void connectArduboyKeys();

    static void connectKY40encoder(uint8_t pina_clk, uint8_t pinb_dt, int8_t pinc_sw = -1);

    static void connectGpioKeypad(const uint8_t *gpioKeys);

    static void connectWioKeypad();

protected:
    static TNanoEngineGetButtons m_onButtons;

    static uint8_t m_lastButtons;

    static uint8_t m_newButtons;

    static void resetButtonsCache();

private:
    static uint8_t s_zkeypadPin;
    static const uint8_t *s_gpioKeypadPins;
    static uint8_t s_ky40_clk;
    static uint8_t s_ky40_dt;
    static uint8_t s_ky40_sw;
    static uint8_t zkeypadButtons();
    static uint8_t arduboyButtons();
    static uint8_t gpioButtons();
#ifndef SDL_EMULATION
    static uint8_t wioButtons();
#endif
    static uint8_t ky40Buttons();
};


class NanoEngineCore: public NanoEngineInputs
{
protected:
    NanoEngineCore()
        : NanoEngineInputs(){};

    void beginCore();

public:
    void setFrameRate(uint8_t fps);

    uint8_t getFrameRate()
    {
        return m_fps;
    }

    uint8_t getCpuLoad()
    {
        return m_cpuLoad;
    }

    bool nextFrame();

    void loopCallback(TLoopCallback callback)
    {
        m_loop = callback;
    }

protected:
    uint16_t m_frameDurationMs = 1000 / ENGINE_DEFAULT_FPS;
    uint8_t m_fps = ENGINE_DEFAULT_FPS;
    uint8_t m_cpuLoad = 0;
    uint32_t m_lastFrameTs = 0;
    TLoopCallback m_loop = {nullptr};
};

template <class C, class D> class NanoEngine: public NanoEngineCore, public NanoEngineTiler<C, D>
{
public:
    explicit NanoEngine(D &display);

    void display();

    void begin();

    void notify(const char *str);

protected:
};

template <class C, class D>
NanoEngine<C, D>::NanoEngine(D &display)
    : NanoEngineCore()
    , NanoEngineTiler<C, D>(display)
{
}

template <class C, class D> void NanoEngine<C, D>::display()
{
    resetButtonsCache();
    m_lastFrameTs = lcd_millis();
    NanoEngineTiler<C, D>::displayBuffer();
    m_cpuLoad = ((lcd_millis() - m_lastFrameTs) * 100) / m_frameDurationMs;
}

template <class C, class D> void NanoEngine<C, D>::begin()
{
    NanoEngineCore::beginCore();
}

template <class C, class D> void NanoEngine<C, D>::notify(const char *str)
{
    NanoEngineTiler<C, D>::displayPopup(str);
    lcd_delay(1000);
    m_lastFrameTs = lcd_millis();
    NanoEngineTiler<C, D>::refresh();
}

#endif