Power Up Your Gameplay Experience with Seamless Controls!
Hey there, aspiring game developers! Are you ready to add even more flair to your sprite movements? We’re back with another tutorial that lets you control a sprite’s continuous movement with just a single touch.
Picture this: A rocket gliding through space, dodging meteors while you control its every move with a simple tap. Sounds great, right? Let’s get to it!
Step 1: Setting Up the Environment
First, as always, set up your Codea environment for fullscreen viewing:
viewer.mode = FULLSCREEN
Step 2: Declare Your Sprite Variables
We need to initialize the sprite’s coordinates and movement speed.
local spriteX, spriteY = WIDTH/2, HEIGHT/2
local movingRight = false
local movingLeft = false
local spriteSpeed = 5
Step 3: Drawing the Sprite
Draw the sprite at its starting position:
function draw()
background(40, 40, 50)
sprite(asset.builtin.Space_Art.Red_Ship, spriteX, spriteY)
end
Step 4: Adding Continuous Touch Controls
We’ll modify the `touched()` function to move the sprite continuously with a single touch.
function touched(touch)
if touch.state == BEGAN then
if touch.x > spriteX then
movingRight = true
movingLeft = false
else
movingLeft = true
movingRight = false
end
elseif touch.state == ENDED then
movingRight = false
movingLeft = false
end
end
Step 5: Update Sprite Position
Finally, update the sprite’s position based on the touch input.
function draw()
background(40, 40, 50)
if movingRight then
spriteX = spriteX + spriteSpeed
elseif movingLeft then
spriteX = spriteX – spriteSpeed
end
sprite(asset.builtin.Space_Art.Red_Ship, spriteX, spriteY)
end
Complete Code Listing
Here’s the full code listing with all the modifications:
viewer.mode = FULLSCREEN
local spriteX, spriteY = WIDTH/2, HEIGHT/2
local movingRight = false
local movingLeft = false
local spriteSpeed = 5
function draw()
background(40, 40, 50)
if movingRight then
spriteX = spriteX + spriteSpeed
elseif movingLeft then
spriteX = spriteX – spriteSpeed
end
sprite(asset.builtin.Space_Art.Red_Ship, spriteX, spriteY)
end
function touched(touch)
if touch.state == BEGAN then
if touch.x > spriteX then
movingRight = true
movingLeft = false
else
movingLeft = true
movingRight = false
end
elseif touch.state == ENDED then
movingRight = false
movingLeft = false
end
end
Wrap Up
And there you go! With just a single touch, you can now move your sprite continuously along the X-axis. This opens up a whole new range of possibilities, like fluid side-scrollers or dodging games!
Keep dreaming, keep coding, and who knows—your next game could be the next big hit!
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