PowerUp = Class{}
function PowerUp:init(skin)
— simple positional and dimensional variables
self.width = 16
self.height = 16
— P200504 : Velocity of the PowerUp (going down, a bit slower than ball, in average)
self.dy = 40
self.y = 0
— this will effectively be the color of our ball, and we will index
— our table of Quads relating to the global block texture using this
self.skin = skin
end
— PBU200505 : (Inspired by ball.collides)
function PowerUp:spawn(params)
if params.levelhaskey
and (not params.isunlocked) then — PBU200506 I don’t want no more key if brick is already unlocked
if params.powerup.hadmultiball then
self.skin = 10
else
self.skin = math.random(10) — PBU200505 The PowerUps can be the Key
end
else
if params.powerup.hadmultiball then
— PBU200506 just change paddle size power up when done
self.skin = math.random(2) + 4 — Will be powerups 5 and 6 that are the paddle size
else
self.skin = math.random(9) — PBU200505 Everything else than “key” (not 10)
end
end
self.x = params.currentbrick.x + 8 — PBU200504 : Center of the brick
self.y = params.currentbrick.y + 16 — PBU200504 : Below the brick
self.dy = 40 — P200504 : Velocity of the PowerUp (going down, a bit slower than ball, in average)
— PBU200506 : play sound “Power Ups Spawn”
gSounds[‘powerupspawn’]:play()
return true
end
— PBU200505 : PowerUps activation when touched by the paddle
function PowerUp:activate(params)
— PBU200505 red paddle
if params.powerup.skin == 1 then
params.paddle.skin = 3
— PBU200506 : play sound “paddle color change”
gSounds[‘paddlecolorchange’]:play()
end
— PBU200505 green paddle
if params.powerup.skin == 2 then
params.paddle.skin = 2
— PBU200506 : play sound “paddle color change”
gSounds[‘paddlecolorchange’]:play()
end
— PBU200505 paddle size and width ++
if params.powerup.skin == 5 and params.paddle.size < 4 then
params.paddle.size = params.paddle.size + 1
params.paddle.width = params.paddle.width + 32
— PBU200506 : play sound “paddle bigger”
gSounds[‘paddlegetbigger’]:play()
end
— PBU200505 paddle size and width —
if params.powerup.skin == 6 and params.paddle.size > 1 then
params.paddle.size = params.paddle.size – 1
params.paddle.width = params.paddle.width – 32
— PBU200506 : play sound “paddle smaller”
gSounds[‘paddlegetsmaller’]:play()
end
— PBU200505 3 balls — With Powerups skins 3, 4, 7, 8, 9
— maybe have to do some refactoringt and put the collision code in ball class ???
if params.powerup.skin == 3
or params.powerup.skin == 4
or params.powerup.skin == 7
or params.powerup.skin == 8
or params.powerup.skin == 9 then
params.powerup.hadmultiball = true — PBU200506 Will not go Multiball again
params.ball[2].inplay = true
params.ball[3].inplay = true
params.ball[2].x = params.ball[1].x
params.ball[3].x = params.ball[1].x
params.ball[2].y = params.ball[1].y
params.ball[3].y = params.ball[1].y
— give ball random starting velocity
params.ball[2].dx = math.random(-200, 200)
params.ball[2].dy = math.random(-50, -60)
params.ball[3].dx = math.random(-200, 200)
params.ball[3].dy = math.random(-50, -60)
— PBU200506 : play sound “3 balls”
gSounds[‘multiball’]:play()
end
— PBU200505 Case Of the “key” powerup
if params.powerup.skin == 10 then
params.isunlocked = true
— PBU200506 : play sound “Brick is unlocked”
gSounds[‘brickisunlocked’]:play()
end
— Here : todo : manage the other cases
— PBU200505 : put haspowerup of playstate to false
self.dy = 0 — P200504 : stopping the powerups, just for checkign behaviour
params.haspowerup = false
return true
end
–[[
PBU200505 : Same “collides” method as for Ball (should refactor code to hav only 1 instance of this ??)
Expects an argument with a bounding box, be that a paddle or a brick,
and returns true if the bounding boxes of this and the argument overlap.
]]
function PowerUp:collides(target)
— first, check to see if the left edge of either is farther to the right
— than the right edge of the other
if self.x > target.x + target.width or target.x > self.x + self.width then
return false
end
— then check to see if the bottom edge of either is higher than the top
— edge of the other
if self.y > target.y + target.height or target.y > self.y + self.height then
return false
end
— if the above aren’t true, they’re overlapping
return true
end
— PBU200505 : Places the ball just below the Brick
function PowerUp:reset(params)
self.x = params.brick.x + 8 — PBU200504 : Center of the brick (8 + 16 + 8)
self.y = params.brick.y + 16 — PBU200504 : Below the brick
self.dy = 40 — P200504 : Velocity of the PowerUp (going down, a bit slower than ball, in average)
end
function PowerUp:update(params)
self.y = self.y + self.dy * params.currentdt — PBU200504 PowerUp falling down
— PBU200504 : What if PowerUp goes below the floor (not touched by player)
if self.y > VIRTUAL_HEIGHT then
— PBU200505 : put haspowerup of playstate to false
params.haspowerup = false
self.dy = 0 — P200504 : stopping the powerups, just for checkign behaviour
end
end
function PowerUp:render(params)
— gTexture is our global texture for all blocks
— gPowerUpFrames is a table of quads mapping to each individual PowerUp skin in the texture
if params.haspowerup then
love.graphics.draw(gTextures[‘main’], gFrames[‘powerups’][self.skin],
self.x, self.y)
end
end
Pascal Barrieu 