58 lines
1.2 KiB
Markdown
58 lines
1.2 KiB
Markdown
|
# Start Countdown
|
||
|
|
||
|
The game library #docs
|
||
|
|
||
|
The game library supports simple single-player time-based games. The general goal of a game will be to achieve a top score before time runs out of time.
|
||
|
|
||
|
## Block Editor
|
||
|
|
||
|
![](/static/mb/game-library/start-countdown-0.png)
|
||
|
|
||
|
## Touch Develop
|
||
|
|
||
|
The code below shows a simple game where the user gets to press the button ``A`` as much times as possible in 10 seconds.
|
||
|
|
||
|
```
|
||
|
input.onButtonPressed("A", () => {
|
||
|
game.addScore(1)
|
||
|
})
|
||
|
game.startCountdown(10000)
|
||
|
```
|
||
|
|
||
|
### Score
|
||
|
|
||
|
When a player achieves a goal, you can increase the game score
|
||
|
|
||
|
* add score points to the current score
|
||
|
|
||
|
```
|
||
|
export function addScore(points: number)
|
||
|
```
|
||
|
|
||
|
* set the current score to a particular value.
|
||
|
|
||
|
```
|
||
|
export function setScore(value: number)
|
||
|
```
|
||
|
|
||
|
* get the current score value
|
||
|
|
||
|
```
|
||
|
export function score() : number
|
||
|
```
|
||
|
|
||
|
### Countdown
|
||
|
|
||
|
If your game has a time limit, you can start a countdown in which case `game->current time` returns the remaining time.
|
||
|
|
||
|
* start a countdown with the maximum duration of the game in milliseconds.
|
||
|
|
||
|
```
|
||
|
export function startCountdown(ms: number)
|
||
|
```
|
||
|
|
||
|
### Lessons
|
||
|
|
||
|
[bop it](/microbit/lessons/bop-it) | [game of chance](/microbit/lessons/game-of-chance) | [game counter](/microbit/lessons/game-counter)
|
||
|
|