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RASP-SENSE-HAT-ASTRO-PI-Débuter (voir la source)
Version du 28 août 2015 à 11:15
, 28 août 2015 à 11:15→Tout mettre ensemble
== Tout mettre ensemble ==
== Tout mettre ensemble ==
[[Fichier:hat-sense-banner-06.jpg]]
[[Fichier:hat-sense-banner-06.jpg]]
Now that you've explored most of the features of the Sense HAT, you could combine them to create a project. Here's an example reaction testing game, which could be used by the astronauts to test their reflexes.
The game will display an arrow on the LED matrix and select a random orientation for it. The player must rotate the board to match the arrow. If they match it in time the arrow turns green and their score increases; if not their arrow turns red and the game ends, telling them their score. The game keeps showing arrows in new orientations until the player loses, and each turn gets faster.
This idea combines:
* Showing messages and images on the LED matrix
* Setting and detecting the orientation
* Use of variables, randomisation, iteration, and selection
As this is more complicated than previous programs it's worth planning out the steps involved in '''pseudocode'''.
<nowiki>
import the required libraries (sense_hat, time, random)
create a sense object
Set up the colours needed
Create 3 different arrows (white, green, red)
Set a variable pause to 3 (the initial time between turns)
Set variables score and angle to 0
Create a variable called play set to True (this will be used to stop the game later)
Begin a loop which continues while play == True
Set a new random angle (use random.choice() method)
Show the white arrow and sleep for current pause length
Check whether orientation matches the arrow
---if it does then add a point and turn the arrow green
---otherwise set play to False and turn the arrow red
Shorten the pause duration slightly
Pause before the next arrow
When loop is exited, display a message with the score</nowiki>
If you turned this into Python it could look like this:
<nowiki>from sense_hat import SenseHat
import time
import random
sense = SenseHat()
# set up the colours (white, green, red, empty)
w = [150, 150, 150]
g = [0, 255, 0]
r = [255, 0, 0]
e = [0, 0, 0]
# create images for three different coloured arrows
arrow = [
e,e,e,w,w,e,e,e,
e,e,w,w,w,w,e,e,
e,w,e,w,w,e,w,e,
w,e,e,w,w,e,e,w,
e,e,e,w,w,e,e,e,
e,e,e,w,w,e,e,e,
e,e,e,w,w,e,e,e,
e,e,e,w,w,e,e,e
]
arrow_red = [
e,e,e,r,r,e,e,e,
e,e,r,r,r,r,e,e,
e,r,e,r,r,e,r,e,
r,e,e,r,r,e,e,r,
e,e,e,r,r,e,e,e,
e,e,e,r,r,e,e,e,
e,e,e,r,r,e,e,e,
e,e,e,r,r,e,e,e
]
arrow_green = [
e,e,e,g,g,e,e,e,
e,e,g,g,g,g,e,e,
e,g,e,g,g,e,g,e,
g,e,e,g,g,e,e,g,
e,e,e,g,g,e,e,e,
e,e,e,g,g,e,e,e,
e,e,e,g,g,e,e,e,
e,e,e,g,g,e,e,e
]
pause = 3
score = 0
angle = 0
play = True
sense.show_message("Keep the arrow pointing up", scroll_speed=0.05, text_colour=[100,100,100])
while play:
last_angle = angle
while angle == last_angle:
angle = random.choice([0, 90, 180, 270])
sense.set_rotation(angle)
sense.set_pixels(arrow)
time.sleep(pause)
x, y, z = sense.get_accelerometer_raw().values()
x = round(x, 0)
y = round(y, 0)
print(angle)
print(x)
print(y)
if x == -1 and angle == 180:
sense.set_pixels(arrow_green)
score += 1
elif x == 1 and angle == 0:
sense.set_pixels(arrow_green)
score += 1
elif y == -1 and angle == 90:
sense.set_pixels(arrow_green)
score += 1
elif y == 1 and angle == 270:
sense.set_pixels(arrow_green)
score += 1
else:
sense.set_pixels(arrow_red)
play = False
pause = pause * 0.95
time.sleep(0.5)
msg = "Your score was %s" % score
sense.show_message(msg, scroll_speed=0.05, text_colour=[100, 100, 100])</nowiki>
'''1.''' Click File -- Save As, give your program a name e.g. {{fname|reaction_game.py}}, then press F5 to run.
Here's a video showing it being demonstrated:
[[Fichier:RASP-SENSE-HAT-ASTRO-PI-Debuter-40.jpg]]
=== Idées ===
There are lots of potential developments for this game:
* Include shake actions as well as orientation.
* Make use of the humidity sensor to detect breath; the player could be prompted to breathe on the board as an action.
* Include more than 4 directions; players have to hold at 45 degrees.
{{RASP-SENSE-HAT-ASTRO-PI-TRAILER}}
{{RASP-SENSE-HAT-ASTRO-PI-TRAILER}}