pxt-calliope/docs/projects/flashing-heart.md

116 lines
1.6 KiB
Markdown
Raw Normal View History

2016-06-14 17:12:13 +02:00
# flashing heart
2016-06-11 05:09:18 +02:00
![](/static/mb/projects/a1-display.png)
2016-06-14 18:11:29 +02:00
### ~avatar avatar
```sim
basic.forever(() => {
basic.showLeds(`
. # . # .
# # # # #
# # # # #
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
basic.pause(500);
})
```
Use the LEDs to display a flashing heart, and then create
an animation of a broken heart. :(
### ~
2016-05-28 06:40:59 +02:00
## Step 1
Use [show leds](/reference/basic/show-leds) and make your code look like this:
2016-05-28 06:40:59 +02:00
```blocks
basic.showLeds(`
. # . # .
# # # # #
# # # # #
. # # # .
. . # . .`);
```
## Step 2
Add a [pause](/reference/basic/pause) to wait and [clear screen](/reference/basic/clear-screen) to turn off the LEDs.
2016-05-28 06:40:59 +02:00
```blocks
basic.showLeds(`
. # . # .
# # # # #
# # # # #
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
2016-06-11 05:09:18 +02:00
```
## Step 3
Put a [forever loop](/reference/basic/forever) around it.
```blocks
basic.forever(() => {
basic.showLeds(`
. # . # .
# # # # #
2016-06-12 04:37:09 +02:00
# # # # #
2016-06-11 05:09:18 +02:00
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
})
2016-06-11 20:40:09 +02:00
```
## Step 4
Add a [pause](/reference/basic/pause) to wait after clearing the screen.
```blocks
basic.forever(() => {
basic.showLeds(`
. # . # .
# # # # #
# # # # #
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
basic.pause(500);
})
```
## Step 5
Add a second image of a broken heart.
```blocks
basic.forever(() => {
basic.showLeds(`
. # . # .
# # # # #
# # # # #
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
basic.pause(500);
basic.showLeds(`
. # . # .
# . # # #
# . . . #
. # # # .
. . # . .`);
basic.pause(500);
basic.clearScreen();
basic.pause(500);
})
2016-06-25 23:22:50 +02:00
```