Code

local lpath = shell.resolve(",").."/"
os.loadAPI(lpath..".minecraft/bin/minecraft/apis/gameutils")

local player = gameutils.loadSprite(lpath.."protag.nfp", 6, 5)
local bg = gameutils.loadSprite(lpath.."level.nfp", 1, 1)


local refreshRate = 0.25
local gtID = osistartTimerCrefreshliate)
local ypropulsion = 1
local onGround = false
local jumpHeight = 2
local running = true
local deathByLava = false

gameutils.initializeBuffer()

function drawGame()
 gameutils.clearBuffer(colours.black)
 gameutils.writeToBuffer(bg)
 gameutils.writeToBuffer(player)
 gameutils.drawBuffer()
end

function handleInput()

local id, p1 = os.pullEvent()

local px, py = player:getPos() --?

 if id == "key" then
 local desPropX = 0

 if p1 == keys.q then
 running = false
 return

 elseif p1 == keys.up and onGround then
 onGround = false
 ypropulsion = -jumpHeight
 return
 elseif p1 == keys.right then
  desPropX = 1
  for y = py, py+player.image.bounds.height-1 do
  if bg.image[y][px+desPropX] == colours.grey then
  desPropX = 0
  end
 end
elseif p1 == keys.left then
 desPropX = -1
 for y = py, py+player.image.bounds.height-1 do
 if bg.image[y][px+desPropX] == colours.grey then
 desPropX = 0
  end
 end
end
player.x = player.x + desPropX
elseif id == "timer" and p1 == gtID then
 local desPropY = ypropulsion
 if desPropY < -1 then desPropY = -1 end

 if desPropY > 0 and (bg.image[py+player.image.bou --?

 bg.image[py+player.image.bounds.height-1+desPropY --?
 desPropY = 0
 onGround = true
 elseif desPropY < 0 and bg.image[py+desPropY][px] --?
 desPropY = 1
 ypropulsion = -1
end

if bg.image[py+player.image.bounds.height-1+desPropY --?
 running = false
 deathByLava = true
end

player.y = player.y + desPropY
 if ypropulsion < 1 then ypropulsion = ypropulsion --?

  gtID = os.startTimer(refreshRate)
 end
end

while running do
 drawGame()
 handleInput()
end

term.setBackgroundColour(colours.black)
shell.run("clear")
sleep(0.1)

if deathByLava then
 term.setTextColour(colours.red)
_Print("You fell in lava!")
end