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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Damien P. George
* Copyright (c) 2016 Joe Glancy
*
* 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>
extern "C" {
#include "py/mphal.h"
#include "microbit/modmicrobit.h"
#define GET_PIXEL(x, y) microbit_display_get_pixel(µbit_display_obj, x, y)
#define SET_PIXEL(x, y, v) microbit_display_set_pixel(µbit_display_obj, x, y, v)
STATIC void antigravity_output_char(char c) {
MP_PLAT_PRINT_STRN((char*) &c, 1);
}
// NOTE: string has to be plain ASCII
static void antigravity_print_rle(const char *s) {
/* RLE encoding format (2 characters, [0] (first) and [1] (second)):
* [0] the amount of times to output the specified character (max 127),
* bitwise or'ed with 0x80 (to set the last bit, ie: bit 7)
* [1] the character to output
*/
char reps; // how many times to output the specified character
while (*s != '\0') {
if ((*s & 0x80) == 0x80) {
// seventh bit set
reps = *s ^ 0x80;
s++;
if (*s == '\0') {
return;
}
while (reps--) {
antigravity_output_char(*s);
}
}
else {
antigravity_output_char(*s);
}
s++;
}
}
/* uncomment the following line if you want to build the antigravity module with
* the full comic instead of the micro one
*/
//#define ANTIGRAVITY_COMIC_LARGE
void antigravity(uint8_t interval = 200 /* ms */) {
/* move all of the LEDs upwards (we can move them in other directions in the
* future).
* first, output the traditional XKCD comic (either in full or micro:size :)
*/
#ifndef ANTIGRAVITY_COMIC_LARGE
/* micro comic (157 bytes):
+-xkcd.com/353---------------------------------------------------+
| |
| \0/ |
| / \ |
| You're flying! MicroPython! /| |
| How? \ \ |
| / |
| 0 |
| /|\ |
| | |
|-----____/_\______________________________----------------------|
| |
+----------------------------------------------------------------+
*/
static const char *antigravity_comic_str =
"+-xkcd.com/353\xb3-+\n"
"|\xc0 |\n"
"|\xb4 \\0/\x89 |\n"
"|\xb2 /\x83 \\\x89 |\n"
"|\x88 You're flying!\x92 MicroPython! /|\x88 |\n"
"|\x8c How?\xa6 \\ \\\x87 |\n"
"|\x8c /\xb3 |\n"
"|\x8a 0\xb5 |\n"
"|\x89 /|\\\xb4 |\n"
"|\x8a |\xb5 |\n"
"|\x85-\x84_/_\\\x9e_\x96-|\n"
"|\xc0 |\n"
"+\xc0-+\n";
#else
/* full comic (922 bytes):
+-xkcd.com/353-----------------------------------------------------------------+
| |
| \0/ |
| / \ |
| You're flying! MicroPython! /| |
| How? \ \ |
| / |
| 0 |
| /|\ |
| | |
|--------------____/_\_______________________________--------------------------|
| |
| |
+------------------------------------------------------------------------------+
+-----------------------+ +-------------------------+ +------------------------+
| | | I dunno... | | | I just typed |
| 0 | | Dynamic typing? / | | import antigravity |
| _/\\_ | | Whitespace? / | | | |
| / \// | | / / | | That's it? / |
| I learned it last | | | Come join us! | | / / |
| night! Everything | | | Programming | | / ...I also |
| is so simple! | | | is fun again! | | / sampled |
| / | | | It's a whole | | | everything in the |
| / | | | new world | | | medicine cabinet |
| Hello world is | | | up here! | | | for comparison. |
| just | | 0 | | 0 | |
| | | /|\/ | | /|\ But I think |
| print("Hello, world!")| | | \_ But how are | | | this is the |
| | | / \ you flying? | | / \ Python. |
+-----------------------+ +-------------------------+ +------------------------+
*/
static const char *antigravity_comic_str =
"+-xkcd.com/353\xc1-+\n"
"|\xce |\n"
"|\xbe \\0/\x8d |\n"
"|\xbc /\x83 \\\x8d |\n"
"|\x91 You're flying!\x93 MicroPython! /|\x8c |\n"
"|\x95 How?\xa7 \\ \\\x8b |\n"
"|\x95 /\xb8 |\n"
"|\x93 0\xba |\n"
"|\x92 /|\\\xb9 |\n"
"|\x93 |\xba |\n"
"|\x8e-\x84_/_\\\x9f_\x9a-|\n"
"|\xce |\n"
"|\xce |\n"
"+\xce-+\n"
"+\x97-+ +\x99-+ +\x98-+\n"
"|\x97 | |\x84 I dunno\x83.\x87 |\x83 | |\x86 I just typed\x86 |\n"
"|\x89 0\x8d | | Dynamic typing?\x83 /\x84 | |\x83 import antigravity\x83 |\n"
"|\x88 _/\\\\_\x8a | |\x84 Whitespace?\x84 /\x85 | |\x92 |\x85 |\n"
"|\x85 /\x85 \\//\x89 | |\x84 /\x8d /\x86 | |\x85 That's it? /\x86 |\n"
"|\x83 I learned it last\x83 | |\x83 |\x86 Come join us! | |\x85 /\x8a /\x87 |\n"
"|\x83 night! Everything\x83 | |\x83 |\x87 Programming\x83 | |\x84 /\x84 \x83.I also\x86 |\n"
"|\x85 is so simple!\x85 | |\x83 |\x86 is fun again! | |\x83 /\x86 sampled\x87 |\n"
"|\x8c /\x8a | |\x83 |\x86 It's a whole | | | everything in the |\n"
"|\x8b /\x8b | |\x83 |\x87 new world\x84 | | | medicine cabinet\x83 |\n"
"|\x85 Hello world is\x84 | |\x83 |\x88 up here!\x85 | | |\x83 for comparison.\x83 |\n"
"|\x89 just\x8a | |\x83 0\x95 | |\x83 0\x89 |\x8a |\n"
"|\x97 | | /|\\/\x93 | | /|\\\x84 But I think\x84 |\n"
"| print(\"Hello, world!\")| |\x83 |\x83 \\_ But how are\x84 | |\x83 |\x85 this is the\x84 |\n"
"|\x97 | | / \\\x85 you flying?\x84 | | / \\\x86 Python.\x86 |\n"
"+\x97-+ +\x99-+ +\x98-+\n";
#endif /* ANTIGRAVITY_COMIC_LARGE */
antigravity_print_rle(antigravity_comic_str);
for (uint8_t iteration = 0; iteration < 5; iteration++) {
mp_hal_delay_ms(interval);
bool wait = false;
for (uint8_t row = 1; row < 5 - iteration; row++) {
for (uint8_t col = 0; col < 5; col++) {
// move this bit down if possible
uint8_t val = GET_PIXEL(col, row);
if (val) {
// this is why the row for loop starts at one
if (!GET_PIXEL(col, row - 1)) {
SET_PIXEL(col, row, 0);
SET_PIXEL(col, row - 1, val);
wait = true;
}
} // we don't care if the LED is off
}
}
if (!wait) {
continue;
}
}
}
STATIC mp_obj_t antigravity__init__(void) {
antigravity();
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_0(antigravity___init___obj, antigravity__init__);
STATIC const mp_map_elem_t antigravity_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_antigravity) },
{ MP_OBJ_NEW_QSTR(MP_QSTR___init__), (mp_obj_t)&antigravity___init___obj },
};
STATIC MP_DEFINE_CONST_DICT(antigravity_module_globals, antigravity_module_globals_table);
const mp_obj_module_t antigravity_module = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&antigravity_module_globals,
};
}
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