Hei! We are developing a towerdefense game for a school project. We have never written in LUA before, so bear with us. Our main problem is that the CPU on the iPhone 3GS hits 100% load and the game wont run. If that doesnt happen, then the game wont start at all.
We have tried to get rid of heavy code that might have been the problem, but no matter what we do the game seems to overload or timeout.
What we are trying to achieve for now is:
-make enemies follow a path (physics or transitions?)
-make towers shoot bullets and hit enemies
It would have been nice if someone could just take a look at the code. Maybe we have missed something crucial general lua code.
The code is as follows:
--main.lua
display.setStatusBar(display.HiddenStatusBar)
require("towers")
require("enemies")
physics = require("physics")
physics.start()
physics.setGravity(0,0)
currentLvl = 1
currentEnemy = 0 --the current enemy that we're creating from the array
enemyTime = 0 --how many frames have elapsed since the last enemy was created
enemyLimit = 15 --how many frames are allowed before another enemy is created
enemyArray = {} --this array will tell the function when to create an enemy
enemiesLeft = -1 --how many enemies are left on the field
startBlock = 0
turnOne = 0
enemyArray1 = {1,1,1,1,1,2,1,1,1,2,1,1,1,1,1,1,2,2,2,1,1}
enemyArray2 = {}
health = 100
cash = 50
enemyHolder = {}
lvlHolder = {}
turnHolder = {}
enemyHP = {}
lvlArray = { 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 26, 11, 11, 11, 11, 11, 11, 11, 42, 10,
10, 10, 10, 10, 10, 22, 10, 10, 10, 10, 10, 10, 10, 22, 10,
10, 26, 11, 42, 10, 22, 10, 10, 10, 10, 10, 10, 10, 22, 10,
10, 22, 10, 22, 10, 68, 11, 11, 11, 11, 24, 10, 10, 22, 10,
77, 48, 10, 22, 10, 10, 10, 10, 10, 10, 22, 10, 10, 22, 10,
10, 10, 10, 22, 10, 10, 10, 10, 10, 10, 22, 10, 10, 22, 10,
10, 10, 10, 86, 11, 11, 11, 11, 11, 11, 48, 10, 10, 84, 88,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
}
--enemiesLeft = table.maxn(enemyArray1)
print(enemiesLeft)
function makeRoad()
w = 0
row = 0 --the current row we're working on
block = nil --this will act as the block that we're placing down
for i=0, 150 do --creating a loop that'll go through the level array
if(lvlArray[i] == 10) then --if the current index is set to 0
block = display.newImage("blocks/grass.png") --create a gray empty block
--//and set the coordinates to be relative to the place in the array
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.number = i
block:addEventListener( "tap", makeTower )
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", newDir)
table.insert(lvlHolder, i, block)
elseif(lvlArray[i] == 11) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/roadH.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
elseif(lvlArray[i] == 22) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/roadV.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
elseif(lvlArray[i] == 86) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerNE.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0.3
block.dy = 0
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirRIGHT)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 84) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerNW.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = -0.3
block.dy = 0
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirLEFT)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 24) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerSW.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = -0.3
block.dy = 0
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirLEFT)
table.insert(turnHolder, w, block)
w = w + 1
turnOne = block
elseif(lvlArray[i] == 26) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerSE.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0.3
block.dy = 0
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirRIGHT)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 68) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerNE.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0
block.dy = -0.3
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirUP)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 48) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerNW.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0
block.dy = -0.3
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirUP)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 42) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerSW.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0
block.dy = 0.3
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirDOWN)
table.insert(turnHolder, w, block)
w = w + 1
turnOne = block
elseif(lvlArray[i] == 62) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/cornerSE.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.dx = 0
block.dy = 0.3
physics.addBody( block, { isSensor = true } )
block:addEventListener("collision", setDirDOWN)
table.insert(turnHolder, w, block)
w = w + 1
elseif(lvlArray[i] == 77) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/roadH.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.name = "start"
startBlock = block
elseif(lvlArray[i] == 88) then --if there is supposed to be a row
--just add a box that will be a darker color and won't have any actions
block = display.newImage("blocks/roadH.png")
block.x= (i-row\*15)\*32-16
block.y = row\*32+16
block.name = "finish"
table.insert(turnHolder, w, block)
w = w + 1
end
--print(turnHolder)
for c=1,11 do
if(i == c\*15) then
--if 10 columns have gone by, then we move onto the next row
row = row +1
end
end
end
end
function eFrame(e)
makeEnemies() --we'll just make some enemies
end
function makeEnemies() --//this function will add enemies to the field
if(enemyTime \< enemyLimit) then --//if it isn't time to make them yet
enemyTime = enemyTime + 1--;//then keep on waiting
elseif(enemyTime \>= enemyLimit) then
spawnEnemy()
currentEnemy = currentEnemy +1--;//move on to the next enemy
enemyTime = 0 --;//and reset the time
end
end
function countEnemies()
enemyNumber = table.maxn(enemyArray1)
--print(enemyNumber)
for i = 0, enemyNumber do
if(enemyArray1[i] ~= 0) then
enemiesLeft = enemiesLeft +1
end
--print(enemiesLeft)
end
end
countEnemies()
makeRoad()
Runtime:addEventListener( "enterFrame", eFrame )
--UI
hearticon = display.newImage("UI/heart.png")
hearticon.xScale = 0.1
hearticon.yScale = 0.1
hearticon.x = 12
hearticon.y = 12
goldbar = display.newImage("UI/gold.png")
goldbar.xScale = 0.17
goldbar.yScale = 0.17
goldbar.x = 465
goldbar.y = 12
--healthText = display.newText((health), 22, 0, "minecraft")
--goldText = display.newText((cash), 420, 0, "minecraft")
function refreshText(e)
healthText.text = health
goldText.text = cash
end
--Runtime:addEventListener("enterFrame", refreshText)
--Runtime:addEventListener( "collision", setDir ) --enemies.lua
counter2 = 0
enemyHolder = {}
turnCoordX = 0
turnCoordY = 0
--print(currentEnemy)
ct = 0
function onCollision(e)
print("CRASH!!" .. ct)
ct = ct + 1
end
function spawnEnemy()
if(enemyArray1[currentEnemy] == 1) then
counter2 = counter2 + 1
--print("enemySpawned "..counter2)
enemy = display.newImage("enemies/zombiesmall2.png")
--enemy.xScale = 0.5
--enemy.yScale = 0.5
enemy.maxSpeed = 4
enemy.x = startBlock.x - 50
enemy.y = startBlock.y
enemy.dx = 1
enemy.dy = 0
enemy.speed = 1
enemy.money = 1
enemy.id = "enemy"
physics.addBody( enemy, { isSensor = true } )
--enemy:addEventListener( "collision", onCollision )
table.insert(enemyHolder, currentEnemy, enemy)
table.insert(enemyHP,currentEnemy, 50)
--print("currentEnemy " ..currentEnemy)
--print("enemyArray "..table.maxn (enemyHolder))
--moveEnemy()
elseif(enemyArray1[currentEnemy] == 2) then
counter2 = counter2 + 1
--print("enemySpawned "..counter2)
enemy = display.newImage("enemies/skeleton2.png")
--enemy.xScale = 0.9
--enemy.yScale = 0.9
enemy.maxSpeed = 4
enemy.x = startBlock.x - 50
enemy.y = startBlock.y
enemy.dx = 1
enemy.dy = 0
enemy.speed = 1.2
enemy.money = 1.5
enemy.id = "enemy"
physics.addBody( enemy, { isSensor = true } )
--physics.addBody(enemy)
table.insert(enemyHolder, currentEnemy, enemy)
table.insert(enemyHP,currentEnemy, 100)
end
if(enemyArray1[currentEnemy] == 0) then
--print("no enemy")
end
end
--function killEnemy()
--enTarget = display.newImage("enemies/zombie\_left1.png")
--enemyHolder[, i] --enTarget = enemyHolder[i+1]
--health = health -1
--print(health)
--end
function moveEnemy2()
for i = 1, table.maxn (enemyHolder) do --{//create a loop
if( enemyHolder[i].x ~= nil) then
enemyHolder[i].x = enemyHolder[i].x + (enemyHolder[i].dx\*enemyHolder[i].speed)
enemyHolder[i].y = enemyHolder[i].y + (enemyHolder[i].dy\*enemyHolder[i].speed)
end
end
end
function moveEnemy()
for a = 0, table.maxn (turnHolder) do
turnCoordX=turnHolder[a].x
turnCoordY=turnHolder[a].y
for i = 1, table.maxn (enemyHolder) do --{//create a loop
if( enemyHolder[i].x ~= nil) then
enemyHolder[i].x = enemyHolder[i].x + (enemyHolder[i].dx\*enemyHolder[i].speed)
enemyHolder[i].y = enemyHolder[i].y + (enemyHolder[i].dy\*enemyHolder[i].speed)
if(enemyHolder[i].x \<= turnHolder[a].x+3 and enemyHolder[i].x \>= turnHolder[a].x-3 and enemyHolder[i].y \<= turnHolder[a].y+3 and enemyHolder[i].y \>= turnHolder[a].y-3) then
enemyHolder[i].dx = turnHolder[a].dx
enemyHolder[i].dy = turnHolder[a].dy
if(turnHolder[a].name == "finish")then
--table.remove(enemyHolder[i])
enemyHolder[i]:removeSelf()
enemiesLeft = enemiesLeft -1
health = health -1
cash = cash +(enemyHolder[i].money\*50)
print(enemiesLeft)
if(enemiesLeft == 0) then
currentLvl = currentLvl + 1
print("current lvl " ..currentLvl)
end
--print(health)
--print(enemyHP[i])
end
end
end
end end
end
function newDir(e)
if(e.other.id =="enemy") then
if(e.other.nextDir == "UP") then
e.other.dx = 0
e.other.dy = -1
elseif(e.other.nextDir == "DOWN") then
e.other.dx = 0
e.other.dy = 1
elseif(e.other.nextDir == "LEFT") then
e.other.dx = -1
e.other.dy = 0
elseif(e.other.nextDir == "RIGHT") then
e.other.dx = 1
e.other.dy = 0
end
end
end
function setDirUP(e)
if(e.other.id =="enemy") then
e.other.nextDir = "UP"
print("up")
end
end
function setDirDOWN(e)
if(e.other.id =="enemy") then
e.other.nextDir = "DOWN"
print("down")
end
end
function setDirLEFT(e)
if(e.other.id =="enemy") then
e.other.nextDir = "LEFT"
print("left")
end
end
function setDirRIGHT(e)
if(e.other.id =="enemy") then
e.other.nextDir = "RIGHT"
print("right")
end
end
--function addListener(e)
Runtime:addEventListener( "enterFrame", moveEnemy2 )
--end
[code]
–towers.lua
counter = 0
canPlaceTower = true
towerArray = {}
function makeTower(e)
if(canPlaceTower == true) then
tower = display.newImage(“towers/m1.png”)
tower.x= e.target.x
tower.y =e.target.y
tower.number = e.target.number
e.target:removeEventListener( “tap”, makeTower )
tower:addEventListener( “tap”, removeTower )
counter = counter + 1
canPlaceTower = false
timer.performWithDelay( 10, towerTrue )
–print (counter)
table.insert(towerArray,e.target.number,tower)
end
end
remember = 0
function removeTower(e)
print(“remove tower”)
e.target:removeSelf()
remember = e
timer.performWithDelay( 10, addBlockListener )
end
function addBlockListener(f)
lvlHolder[remember.target.number]:addEventListener(“tap”, makeTower)
end
function towerTrue()
canPlaceTower = true
end
[/code] [import]uid: 51903 topic_id: 9800 reply_id: 309800[/import]