<commit_before>
/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 <NAME>
 *
 * 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.
 */

#include <stdio.h>
#include "MicroBit.h"

extern "C" {

#include "mphal.h"
#include "microbitimage.h"
#include "microbitdisplay.h"

static const mp_float_t bright[7] = { 
    0.0, 1.0/9, 2.0/9, 4.0/9, 6.0/9, 7.0/9, 8.0/9 
};

void love(int interval = 80 /* ms */) {
    microbit_image_obj_t * hearts[7];
    for (int i = 0; i < 7; i++) {
         hearts[i] = microbit_image_dim(HEART_IMAGE, bright[i]);
    }
   
    for(int iteration = 0; iteration < 5; iteration++) {
        for(int step = 0; step < 7; ++step) {
            microbit_display_print(&microbit_display_obj, hearts[step]);
            mp_hal_delay_ms(interval);
        }
        for(int step = 6; step >= 0; --step) {
            microbit_display_print(&microbit_display_obj, hearts[step]);
            mp_hal_delay_ms(interval);
        }
    }
    microbit_display_clear();
}<commit_msg>Make the heart in love module beat like a real heart.<commit_after>
/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 <NAME>
 *
 * 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.
 */

#include <stdio.h>
#include "MicroBit.h"

extern "C" {

#include "mphal.h"
#include "microbitimage.h"
#include "microbitdisplay.h"

static const mp_float_t bright[7] = { 
    0.0, 1.0/9, 2.0/9, 4.0/9, 6.0/9, 7.0/9, 1.0,
};

void love(int interval = 25 /* ms */) {
    microbit_image_obj_t *hearts[MP_ARRAY_SIZE(bright)];
    for (uint i = 0; i < MP_ARRAY_SIZE(bright); i++) {
         hearts[i] = microbit_image_dim(HEART_IMAGE, bright[i]);
    }
   
    for (int iteration = 0; iteration < 8; iteration++) {
        // pause between double beats of the heart
        if (iteration && (iteration & 1) == 0) {
            mp_hal_delay_ms(20 * interval);
        }
        // pulse heart to max brightness
        for(uint step = 0; step < MP_ARRAY_SIZE(bright); ++step) {
            microbit_display_print(&microbit_display_obj, hearts[step]);
            mp_hal_delay_ms(interval);
        }
        // pulse heart to min brightness
        for(int step = MP_ARRAY_SIZE(bright) - 1; step >= 0; --step) {
            microbit_display_print(&microbit_display_obj, hearts[step]);
            mp_hal_delay_ms(interval);
        }
    }
    microbit_display_clear();
}
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