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docs/lessons/catch-the-egg-game/activity.md

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+# catch the egg game challenges
+
+Coding challenges for catch the egg game.
+
+## Before we get started
+
+Your starting code should look like this:
+
+```blocks
+let basketX = 2
+let eggX = 2
+let eggY = 0
+basic.forever(() => {
+    led.unplot(basketX, 4)
+    led.unplot(eggX, eggY)
+    eggY = eggY + 1
+    led.plot(eggX, eggY)
+    basic.pause(300)
+    let accX = input.acceleration(Dimension.X)
+    basketX = 2 + Math.min(2, Math.max(-2, accX / 200))
+    led.plot(basketX, 4)
+    if (eggY > 4) {
+        eggY = -1
+        eggX = Math.random(5)
+    }
+    basic.pause(300)
+})
+```
+
+### ~avatar avatar impressed
+
+### Challenge 1
+
+Let's use an **IF** statement to detect if the egg and the basket are lined up.
+
+Now that we know when an egg is caught, we can keep track of the score! We need to use the `add score` function built into the game library to add `1` point for every egg that is caught. However, let's not forget to `remove life` if an egg falls off the display before it's caught!
+
+### ~
+
+```blocks
+let basketX1 = 2
+let eggX1 = 2
+let eggY1 = 0
+basic.forever(() => {
+    led.unplot(basketX1, 4)
+    led.unplot(eggX1, eggY1)
+    eggY1 = eggY1 + 1
+    led.plot(eggX1, eggY1)
+    basic.pause(300)
+    let accX = input.acceleration(Dimension.X)
+    basketX1 = 2 + Math.min(2, Math.max(-2, accX / 200))
+    led.plot(basketX1, 4)
+    if (eggY1 > 4) {
+        eggY1 = -1
+        eggX1 = Math.random(5)
+    }
+    if (eggY1 == 4) {
+        if (basketX1 == eggX1) {
+            game.addScore(1) // ***
+        } else {
+            game.removeLife(1) // ***
+        }
+    }
+    basic.pause(300)
+})
+```
+
+* Press the `run` button to test out your game.
+
+### ~avatar avatar encourage
+
+### Challenge 2
+
+Catching eggs gets easier with practice so let's make the eggs fall faster every 5 catches. We can do this by tracking how long the egg pauses in each position while falling with a global variable called **falling pause**. Let's create this variable and set it to `300` initially. Don't forget to also create a condition that will be true every 5 catches.
+
+### ~
+
+```blocks
+let basketX2 = 2
+let eggX2 = 2
+let eggY2 = 0
+let fallingPause = 300 // ***
+basic.forever(() => {
+    led.unplot(basketX2, 4)
+    led.unplot(eggX2, eggY2)
+    eggY2 = eggY2 + 1
+    led.plot(eggX2, eggY2)
+    basic.pause(300)
+    let accX2 = input.acceleration(Dimension.X)
+    basketX2 = 2 + Math.min(2, Math.max(-2, accX2 / 200))
+    led.plot(basketX2, 4)
+    if (eggY2 > 4) {
+        eggY2 = -1
+        eggX2 = Math.random(5)
+    }
+    if (eggY2 == 4) {
+        if (basketX2 == eggX2) {
+            game.addScore(1)
+            if (game.score() %5 == 0) {
+            }
+        } else {
+            game.removeLife(1)
+        }
+    }
+    basic.pause(300)
+})
+```
+
+### ~avatar avatar surprised
+
+### Challenge 3
+
+### @video td/videos/catch-the-egg-game-4
+
+Let's make the egg fall faster by decreasing the amount of time it pauses in each position by decreasing **falling pause** by `25` every 5 catches. Now, instead of pausing for 300 milliseconds we can pause for the value of **falling pause**.
+
+```blocks
+let basketX3 = 2
+let eggX3 = 2
+let eggY3 = 0
+let fallingPause1 = 300
+basic.forever(() => {
+    led.unplot(basketX3, 4)
+    led.unplot(eggX3, eggY3)
+    eggY3 = eggY3 + 1
+    led.plot(eggX3, eggY3)
+    basic.pause(300)
+    let accX3 = input.acceleration(Dimension.X)
+    basketX3 = 2 + Math.min(2, Math.max(-2, accX3 / 200))
+    led.plot(basketX3, 4)
+    if (eggY3 > 4) {
+        eggY3 = -1
+        eggX3 = Math.random(5)
+    }
+    if (eggY3 == 4) {
+        if (basketX3 == eggX3) {
+            game.addScore(1)
+            if (game.score()% 5 == 0) {
+                fallingPause1 = fallingPause1 - 25 // ***
+            }
+        } else {
+            game.removeLife(1)
+        }
+    }
+    basic.pause(fallingPause1) // ***
+})
+
+```
+
+Fantastic! Your game is now ready to show off.
+
+* Press the `run` button to see your finished game!