My first game. Tic Tac Toe in lua

[Xs]

First i woudl like to thank everyone developing the lua player. your doing a GREAT job!

It would be great if people can test it out and give me some feedback. its a 2 player game at the moment, AI will be included later.

Controls:
Cross = select square
Triangle = reset game
Start = exit game

All the best,
Xs.

-----------------------------------------------------------------------------

- BEGIN CODE -

-- global variables

-- position on board
local xPos = 1
local yPos = 1
-- position on board

-- which players turn
local playerTurn = 1
-- which players turn

-- controls read
local pad
local oldPad
-- controls read

-- current board
local board
-- current board

-- pixel x,y positions
local xPosPrint
local yPosPrint
-- pixel x,y positions

-- player won variable
local tempwin
local won
local XorO
-- player won variable

-- game draw variable
local isDraw
-- game draw variable

-- colors
local RED = Color.new(255, 0, 0)
local GREEN = Color.new(0, 255, 0)
local BLUE = Color.new(0, 0, 255)
local BLACK = Color.new(0,0,0)
local WHITE = Color.new(255,255,255)
-- colors

-- game dimensions
local SQUARE_SIZE = 80
local BOARD_SIZE = 240
local BOARD_TOP = 15
local BOARD_LEFT = 15
-- game dimensions

-- end global

function resetBoard()
isDraw = nil
xPos = 1
yPos = 1
playerTurn = 1
won = nil
XorO = nil
tempWon = nil
board = { {"-","-","-"},
{"-","-","-"},
{"-","-","-"} }
end

function resetGame()
resetBoard()
end

function checkDraw()
for xIndex, line in board do
for yIndex, key in line do
if key == "-" then
isDraw = nil
return isDraw
end
end
end
isDraw = true
return isDraw
end

function drawRect(left, top, width, height, color)
screen:drawLine(left, top, left+width, top, color)
screen:drawLine(left, top, left, top+height, color)
screen:drawLine(left+width, top, left+width, top+height, color)
screen:drawLine(left+width, top+height, left, top+height, color)
end

function drawBoard()
drawRect(BOARD_LEFT, BOARD_TOP, BOARD_SIZE, BOARD_SIZE, RED)

local incY = BOARD_TOP
local incX = BOARD_LEFT
for i = 1, 3 do
for j = 1, 3 do
drawRect(incX, incY, SQUARE_SIZE, SQUARE_SIZE, RED)
incX = incX + SQUARE_SIZE
end
incY = incY + SQUARE_SIZE
incX = BOARD_LEFT
end
end

function clearScreen()
screen:clear()
end

function flip()
screen.waitVblankStart()
screen.flip()
end

function activateUSB(state)
if not state then
System.usbDiskModeDeactivate()
return
end
System.usbDiskModeActivate()
end

function fillRect(left, top, width, height, color)
screen:fillRect(left, top, width, height, color)
end

function drawPicked()
for xIndex, line in board do
for yIndex, key in line do
if key ~= "-" then
x = xIndex * SQUARE_SIZE + BOARD_LEFT - SQUARE_SIZE
y = yIndex * SQUARE_SIZE + BOARD_LEFT - SQUARE_SIZE
--debug("table X=" .. xIndex .. "-Y=" .. yIndex)
printToScreen(x + 37, y + 37, key, GREEN)
end
end
end
end

function selectSquare()
if not isDraw then
if won then
printToScreen(300, 120, "Player " .. playerTurn .. " Wins!", RED)
printToScreen(300, 140, "Press triangle to", WHITE)
printToScreen(300, 150, "restart!", WHITE)
end
else
printToScreen(300, 140, "Draw game, press ", WHITE)
printToScreen(300, 150, "triangle to restart!", WHITE)
end
for i = 1, 3 do
for j = 1, 3 do
if xPos == i and yPos == j then
xPosPrint = i * SQUARE_SIZE + BOARD_LEFT - SQUARE_SIZE
yPosPrint = j * SQUARE_SIZE + BOARD_TOP - SQUARE_SIZE
fillRect(xPosPrint + 1, yPosPrint + 1, SQUARE_SIZE - 2, SQUARE_SIZE - 2, BLUE)

if playerTurn == 2 then
printToScreen(300, BOARD_TOP, "Player 2's turn", GREEN)
elseif playerTurn == 1 then
printToScreen(300, BOARD_TOP, "Player 1's turn", GREEN)
end

drawPicked()
end
printTable()
end
end
end

function quitGame()
if not pad:start() then
return nil
end
return true
end

function debug(message)
--clearScreen()
screen:print(300, 30, message, GREEN)
end

function doPadUP()
--debug("Pad UP")
yPos = yPos - 1
if yPos == 0 then
yPos = 3
end
end

function doPadDOWN()
--debug("Pad DOWN")
yPos = yPos + 1
if yPos == 4 then
yPos = 1
end
end

function doPadRIGHT()
--debug("Pad RIGHT")
xPos = xPos + 1
if xPos == 4 then
xPos = 1
end
end

function doPadLEFT()
--debug("Pad LEFT")
xPos = xPos - 1
if xPos == 0 then
xPos = 3
end
end

function printToScreen(x, y, message, color)
screen:print(x, y, message, color)
end

function printTable()
--local tableX = 300
--local tableY = 60

--for xIndex,line in board do
-- for yIndex, key in line do
-- printToScreen(tableX, tableY, key, WHITE)
--
-- tableX = tableX + 30
-- end
-- tableY = tableY + 30
-- tableX = 300
--end
end


function checkOccupied(x, y)
if board[x][y] ~= "-" then
return nil
end
return true
end

function changePlayerTurn()
if checkOccupied(xPos, yPos) then
if playerTurn == 2 then
-- WORK OUT HOW TO CONSTRUCT A 2D ARRAY
-- THIS METHOD AND DRAWPICKED METHOD
board[xPos][yPos] = "O"
printToScreen(xPosPrint + 37, yPosPrint + 37, "O", GREEN)

if hasWon("O") then
-- display won

printToScreen(300, 120, "Player " .. playerTurn .. " Wins!", RED)
printToScreen(300, 140, "Press triangle to", WHITE)
printToScreen(300, 150, "restart!", WHITE)
else
if checkDraw() then
printToScreen(300, 140, "Draw game, press ", WHITE)
printToScreen(300, 150, "triangle to restart!", WHITE)
else
playerTurn = playerTurn - 1
end
end
elseif playerTurn == 1 then
board[xPos][yPos] = "X"
printToScreen(xPosPrint + 37, yPosPrint + 37, "X", GREEN)

if hasWon("X") then
-- display won
printToScreen(300, 120, "Player " .. playerTurn .. " Wins!", RED)
printToScreen(300, 140, "Press triangle to", WHITE)
printToScreen(300, 150, "restart!", WHITE)
else
if checkDraw() then
printToScreen(300, 140, "Draw game, press ", WHITE)
printToScreen(300, 150, "triangle to restart!", WHITE)
else
playerTurn = playerTurn + 1
end
end
end
else
printToScreen(300, 250, "Position occupied", RED)
end
end

function hasWon(symbol)
tempwin = true
XorO = symbol

-- check current row
for col = 1, 3 do
if not (board[xPos][col] == symbol) then
tempwin = nil
end
end

-- check current column
if not tempwin then
tempwin = true
for row = 1, 3 do
if not (board[row][yPos] == symbol) then
tempwin = nil
end
end
end

-- check left diagonal
if not tempwin then
tempwin = true
for i = 1, 3 do
if not (board == symbol) then
tempwin = nil
end
end
end

-- check right diagonal
if not tempwin then
tempwin = true --true
for i = 1, 3 do
-- DOES NOT WORK!?!
if not (board[4 - i] == symbol) then
tempwin = nil
end
end
end

won = tempwin
return won
end

function doPadCROSS()
changePlayerTurn()
end

function doPadTRIANGLE()
resetGame()
end

function startGameLoop()
while true do
pad = Controls.read()
if pad ~= oldPad then
clearScreen()

oldPad = pad

drawBoard()
selectSquare()

if quitGame() then
break
end

-- or not isDraw

if not won and not isDraw then
if pad:cross() then
doPadCROSS()
elseif pad:up() then
doPadUP()
elseif pad:down() then
doPadDOWN()
elseif pad:left() then
doPadLEFT()
elseif pad:right() then
doPadRIGHT()
end
end
if pad:triangle() then
doPadTRIANGLE()
end

flip()
end
end
end

function main()
activateUSB(true)
resetBoard()
oldPad = Controls.read()
clearScreen()
drawBoard()
flip()
startGameLoop()
end

-- Start program execution at main method
main()

- END CODE -

[Xs]

just noticed all the formatting was stripped from the code when i pasted it above so it kinda looks a mess. if anyone wants the formatted version of the source then ill emial you the file instead.

Best,
Xs.

[KawaGeo]

You can use BBCode to display programs without any formatting by pressing "Code" button. When done with the program, press the "Code" again to close. You could re-edit your first post above.

[MikeHaggar]

Fix so you don't have to press a button to get it to display stuff when starting the first time.

Just replace the main function with this one:

Code: Select all

function main()
 activateUSB(true)
 resetBoard()
 oldPad = Controls.read()
 clearScreen()
 drawBoard()
 selectSquare()
 flip()
 startGameLoop()
end

[Wraggster]

and the fixed version is here http://psp-news.dcemu.co.uk/tictactoe.shtml

[Xs]

thanks very much guys. really apriciate the advice. thanks for the mirror wraggster.


All the best,
Xs.