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-- title: Pong
-- author: Bob Grant
-- desc: Pong Game
-- script: lua
screenMaxX = 232
screenMaxY = 120
ball = {
x = 120,
y = 0,
xSpeed = 2,
ySpeed = 1
}
bat = {
x = 114,
y = 120,
speed = 4
}
score = 0
function TIC()
moveBat()
moveBall()
checkHit()
cls()
print("score = "..score,3,3)
drawWalls()
drawBat()
drawBall()
end
function moveBat()
if (btn(2)) then
bat.x = bat.x - bat.speed
end
if (btn(3)) then
bat.x = bat.x + bat.speed
end
if (bat.x > (screenMaxX - 8)) then
bat.x = screenMaxX - 8
elseif (bat.x < 0) then
bat.x = 0
end
end
function drawBat()
spr(0, bat.x, bat.y, 0,1,0,0,2,1)
end
function drawWalls()
line(0,127,0,0,15)
line(0,0,239,0,15)
line(239,0,239,127,15)
end
function moveBall()
ball.x = ball.x + ball.xSpeed
ball.y = ball.y + ball.ySpeed
if (ball.x > screenMaxX) then
ball.x = screenMaxX
ball.xSpeed = -ball.xSpeed
sfx(0,40,5)
elseif (ball.x < 0) then
ball.x = 0
ball.xSpeed = -ball.xSpeed
sfx(0,40,5)
end
if (ball.y < 0) then
ball.y = 0
ball.ySpeed = -ball.ySpeed
sfx(0,50,5)
end
end
function drawBall()
spr(16, ball.x, ball.y)
end
function checkHit()
if (ball.ySpeed > 0) then
if (ball.y > (bat.y - 8))
and (ball.y < (bat.y)) then
if (ball.x > (bat.x - 6))
and (ball.x < (bat.x + 22)) then
ball.ySpeed = -ball.ySpeed
ball.xSpeed = ball.xSpeed +
math.random(-1,1)
score = score + 1
sfx(0,20,5)
end
end
end
end
