Press the arrow keys that match the ones appearing in blocks on the screen. When your player collides with an arrow block you will get points. Try to beat your high score and dance away!
Learn the basics for a collision based game!
Go to the MakeCode Arcade editor and select New Project to create a new game.
Once the editor loads, you will see a green ||loops:on start|| block already in the editor Workspace.
To create a world for the game to exist in, we will use a tilemap.
To do this, go into ||scene:scene|| and grab a ||scene:set tilemap to|| block and drag it into ||loops:on start||.
Open the tilemap editor by clicking on the gray box in that block.
In the tilemap editor, we can create a level for the game.
First, set the size of the world to 10x8 in the bottom left corner; this will make the map approximately the same size as the screen.
Next, draw a line across the bottom with a tile that will be the bottom wall.
Fill in the rest of the screen with a background of your choice.
Finally, click on the Draw Walls button, and draw another line at the bottom of the screen;
this will give those tiles a red tint,
indicating that they will be walls that block sprites from moving past them.
To make the background less plain you can add some scene effects.
Get a ||scene:start screen effect|| block from ||scene:Scene|| to do this.
Go to the drop down in the block and select star field to create an outer space theme.
namespace myTiles {
//% blockIdentity=images._tile
export const tile0 = img`
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`
//% blockIdentity=images._tile
export const tile1 = img`
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
`
//% blockIdentity=images._tile
export const tile2 = img`
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
`
}
tiles.setTilemap(tiles.createTilemap(
hex`0a0008000202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020201010101010101010101`,
img`
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`,
[myTiles.tile0,myTiles.tile1,myTiles.tile2],
TileScale.Sixteen
))
effects.starField.startScreenEffect()Congratulations! You have now set the scene for your game.
To set the sprite grab a ||sprites:set mySprite to sprite of kind player|| from ||sprites:Sprites|| and drag it into ||loops:on start||. Now right click on mySprite and select rename variable in the menu. Rename your sprite to whatever you would like to call your player. In the ||sprites:sprite of kind player|| block, select the grey square and draw an image of your player.
Now we want to set our sprites starting position. To do this go into sprites and grab ||sprites:set mySprite position to x y|| and drag it under ||sprites:sprite of kind player||. Set the x position to 80 and the y position to 100.
let steve: Sprite = sprites.create(img`
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. . . . . . f f f . . . . . . .
. . . . . . f f f . . . . . . .
. . . . . . f f f . . . . . . .
. . . . . d 9 9 9 d . . . . . .
. . . . . d 9 9 9 d . . . . . .
. . . . . d 8 8 8 d . . . . . .
. . . . . d 8 8 8 d . . . . . .
. . . . . . 8 . 8 . . . . . . .
. . . . . . 8 . 8 . . . . . . .
. . . . . . c . c . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Player)
steve.setPosition(80, 100)Our next step is to create a player that can move strictly between four spots. To do this go to ||controller:Controller|| and grab ||controller:on button pressed|| and drag it into your workspace. Then in the first drop down list select right. Now grab a ||sprites:set mySprite position to x y|| and under the drop down select your sprite. For the x value type in 130 and then for the y value type in 100.
Select the ||controller:on button pressed|| that contains the ||sprites:set mySprite position to x y|| and duplicate it 3 times. For each of the new copies, set one to up, the other to down, and the third to left. Because we want the y variable to remain the same, only change the positions for x.
Now you should have four ||controller:Controller|| blocks that look like this.
let steve: Sprite = null
controller.left.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(30, 100)
})
controller.up.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(60, 100)
})
controller.down.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(100, 100)
})
controller.right.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(130, 100)
})
To get started with our speed variables, drag a ||variables:set var to|| and drag it into start. Rename the variable to speed and set it to 40.
let speed = 40Every half a second we want the projectiles to spawn. So go into ||game:Game|| and grab ||game:on game update every ms|| and place it in your workspace. Set the interval time at 500 ms. Next, we want to choose which “lane” to spawn our projectile in. We’ll need a lane variable for this. To create this variable go into ||variables:Variables|| and grab ||variables:set var to||. Rename the variable to lane and then grab a ||math:pick random|| from ||math:Math|| and place it after the to in our ||variables:set lane to||. Set the first number to 1 and the second to 4.
Now we want to create the projectiles for each lane. Grab an ||logic: if then else if|| block from ||logic:Logic|| and place it under the lane variable. Then from ||logic:Logic|| take a ||Logic:_ = _|| block and place it in the first ||logic:if then|| statement. Now drag a ||variables:lane|| block and put it in the first section and type 1 in the second section. Duplicate this equal statement 3 times and set each second section to 2, 3, and 4 respectively. Click the (+) symbol twice in the ||logic:if else|| statement block and drag these equal statements into the ||logic:else|| statements.
Now grab 4 ||sprites:set mySprite to sprite of kind|| and drag one into each of the 4 positions in the ||logic:if|| statement. Set each variable for each ||logic:if|| statement like this:
According to the variable names, select the grey box and draw an arrow pointing the direction of the variable name. Set each kind to a projectile.
Earlier we created a speed variable. This will now determine the speed that the projectiles spawn at. Grab a ||sprites:set mySprite velocity to|| and drag it into each of the 4 positions on the if statement. Match the mySprite to the variable of the if statement and then set vx to 0 and drag the speed variable from ||variables:Variables|| into the vy position. Repeat for all sections.
From ||sprites:Sprites|| grab a ||sprites:set position to|| block for each of 4 sections of the ||logic:if|| statements. Put them at the end of each section. Switch the mySprite variable to match the direction variable for the ||logic:if|| statement and set y to 8. Now set the x positions to these values:
Congrats, now we can spawn projectiles!
let speed = 40
game.onUpdateInterval(500, function () {
let lane = Math.randomRange(1, 4)
if (lane == 1) {
let left: Sprite = null
left = sprites.create(img`
. . . . . . . . . . . . . . . .
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. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 1 1 6 6 6 6 6 6 . .
. . 6 6 6 1 6 1 6 6 6 6 6 6 . .
. . 6 6 1 6 6 1 1 1 1 1 6 6 . .
. . 6 1 6 6 6 6 6 6 6 1 6 6 . .
. . 6 6 1 6 6 1 1 1 1 1 6 6 . .
. . 6 6 6 1 6 1 6 6 6 6 6 6 . .
. . 6 6 6 6 1 1 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
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. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
left.setVelocity(0, speed)
left.setPosition(30, 8)
} else if (lane == 2) {
let up: Sprite = null
up = sprites.create(img`
. . . . . . . . . . . . . . . .
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. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 1 6 6 6 1 6 6 6 . .
. . 6 6 6 1 6 6 6 6 6 1 6 6 . .
. . 6 6 6 1 1 1 6 1 1 1 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
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. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
up.setVelocity(0, speed)
up.setPosition(60, 8)
} else if (lane == 3) {
let down: Sprite = null
down = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 1 1 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 1 1 1 6 1 1 1 6 6 . .
. . 6 6 6 1 6 6 6 6 6 1 6 6 . .
. . 6 6 6 6 1 6 6 6 1 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
down.setVelocity(0, speed)
down.setPosition(100, 8)
} else {
let right: Sprite = null
right = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 1 6 6 6 . .
. . 6 6 1 1 1 1 1 6 6 1 6 6 . .
. . 6 6 1 6 6 6 6 6 6 6 1 6 . .
. . 6 6 1 1 1 1 1 6 6 1 6 6 . .
. . 6 6 6 6 6 6 1 6 1 6 6 6 . .
. . 6 6 6 6 6 6 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
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`, SpriteKind.Projectile)
right.setVelocity(0, speed)
right.setPosition(130, 8)
}
})In our game we want the player to have a score for the number of projectiles they destroy and then we want the player to have multiple lives in case they miss blocks. To do this go into ||info:info|| and drag ||info:set score to|| into the ||loops: on start|| block. Then grab a ||info:set life to|| and drag it below the set ||info:set score to||. Now change the number in ||info:set life to|| to 5 so that the player can miss five projectiles before the game ends.
info.setScore(0)
info.setLife(5)When the player runs out of lives the game should end and the player’s score should be displayed. To do this, go to ||info:Info||, grab ||info:on life zero||,and it into your workspace. Then go to ||game:game|| and grab ||game:game over lose||. Drag it into ||info:on life zero||. Click on the lose button so it switches to win and then click the (+) symbol. When you click the (+) you should have to option to select an effect. Select the confetti effect.
info.onLifeZero(function () {
game.over(true, effects.confetti)
})You have now set up the basis of the scoring system!
When a projectile hits the bottom wall, we want that to be a collision and to have the player’s lives decrease by one. To add this feature, go into ||scene:Scene|| and select ||scene:on sprite of kind hits wall|| and drag it into your workspace. Now set the kind to be projectile.
Now go into ||sprites:Sprite||, select ||sprites:destroy sprite with effect||, and drag it into on ||scene:sprite of kind hits wall||. Then select the effect to as fire and click the (+) symbol next to it. Set the time to 100 ms. Drag out a ||info:change life by|| and put it under ||sprites:destroy sprite with effect||. Set the number to -1. Now whenever a projectile collides with the bottom, it will be destroyed and the player’s remaining lives will go down.
scene.onHitWall(SpriteKind.Projectile, function (sprite) {
sprite.destroy(effects.fire, 100)
info.changeLifeBy(-1)
})When the player collides with a projectile, their score should increase and the projectile should be destroyed. Go to ||sprites:Sprites|| and grab ||sprites:on sprite of kind player overlaps otherSprite of kind|| and drag it into your workspace. Change the field after otherSprite from player to projectile. Now go back into ||sprites:Sprites|| and drag ||sprites:destroy sprite with effect|| into it. Set the effect to be disintegrate and then click the (+) symbol and enter 100 ms. Now go to ||info:Info| and grab ||info:change score by|| and drag it under ||sprites:destroy sprite with effect||.
sprites.onOverlap(SpriteKind.Player, SpriteKind.Projectile, function (sprite, otherSprite) {
otherSprite.destroy(effects.disintegrate, 100)
info.changeScoreBy(1)
})And now we have a fully functioning game!
sprites.onOverlap(SpriteKind.Player, SpriteKind.Projectile, function (sprite, otherSprite) {
otherSprite.destroy(effects.disintegrate, 100)
music.setVolume(10)
info.changeScoreBy(1)
})
scene.onHitWall(SpriteKind.Projectile, function (sprite) {
sprite.destroy(effects.fire, 100)
info.changeLifeBy(-1)
})
controller.left.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(30, 100)
})
info.onLifeZero(function () {
game.over(true, effects.confetti)
})
controller.right.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(130, 100)
})
controller.up.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(60, 100)
})
controller.down.onEvent(ControllerButtonEvent.Pressed, function () {
steve.setPosition(100, 100)
})
let right: Sprite = null
let down: Sprite = null
let up: Sprite = null
let left: Sprite = null
let lane = 0
let steve: Sprite = null
scene.setBackgroundColor(11)
effects.starField.startScreenEffect()
namespace myTiles {
//% blockIdentity=images._tile
export const tile0 = img`
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`
//% blockIdentity=images._tile
export const tile1 = img`
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
`
//% blockIdentity=images._tile
export const tile2 = img`
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
b b b b b b b b b b b b b b b b
`
}
tiles.setTilemap(tiles.createTilemap(
hex`0a0008000202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020201010101010101010101`,
img`
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. . . . . . . . . .
`,
[myTiles.tile0,myTiles.tile1,myTiles.tile2],
TileScale.Sixteen
))
steve = sprites.create(img`
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. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . f f f . . . . . . .
. . . . . . f f f . . . . . . .
. . . . . . f f f . . . . . . .
. . . . . d 9 9 9 d . . . . . .
. . . . . d 9 9 9 d . . . . . .
. . . . . d 8 8 8 d . . . . . .
. . . . . d 8 8 8 d . . . . . .
. . . . . . 8 . 8 . . . . . . .
. . . . . . 8 . 8 . . . . . . .
. . . . . . c . c . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Player)
steve.setPosition(80, 100)
info.setScore(0)
info.setLife(5)
let speed = 40
game.onUpdateInterval(500, function () {
lane = Math.randomRange(1, 4)
if (lane == 1) {
left = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 1 1 6 6 6 6 6 6 . .
. . 6 6 6 1 6 1 6 6 6 6 6 6 . .
. . 6 6 1 6 6 1 1 1 1 1 6 6 . .
. . 6 1 6 6 6 6 6 6 6 1 6 6 . .
. . 6 6 1 6 6 1 1 1 1 1 6 6 . .
. . 6 6 6 1 6 1 6 6 6 6 6 6 . .
. . 6 6 6 6 1 1 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
left.setVelocity(0, speed)
left.setPosition(30, 8)
} else if (lane == 2) {
up = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 1 6 6 6 1 6 6 6 . .
. . 6 6 6 1 6 6 6 6 6 1 6 6 . .
. . 6 6 6 1 1 1 6 1 1 1 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
up.setVelocity(0, speed)
up.setPosition(60, 8)
} else if (lane == 3) {
down = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 1 1 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 1 1 1 6 1 1 1 6 6 . .
. . 6 6 6 1 6 6 6 6 6 1 6 6 . .
. . 6 6 6 6 1 6 6 6 1 6 6 6 . .
. . 6 6 6 6 6 1 6 1 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
down.setVelocity(0, speed)
down.setPosition(100, 8)
} else {
right = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 1 6 1 6 6 6 . .
. . 6 6 1 1 1 1 1 6 6 1 6 6 . .
. . 6 6 1 6 6 6 6 6 6 6 1 6 . .
. . 6 6 1 1 1 1 1 6 6 1 6 6 . .
. . 6 6 6 6 6 6 1 6 1 6 6 6 . .
. . 6 6 6 6 6 6 1 1 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . 6 6 6 6 6 6 6 6 6 6 6 6 . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Projectile)
right.setVelocity(0, speed)
right.setPosition(130, 8)
}
})
game.onUpdateInterval(2000, function () {
speed += 1
})