Lua Programming Help Thread

thanks, i have this now, but my enemy wont move.

Code:

---

screen:blit(enemy.x,enemy.y,enemy1)
end
if enemy.x > 0 then
enemy.x = enemy.x + 10
end
screen:blit(enemy.x,enemy.y,enemy1)
screen.flip()

---

OK, what does your array say?

Code:

---

enemy = {}
enemy.y = 244
enemy.x = 480

---

Zitat:

---

Zitat von Gutya

Code:

---

enemy = {}
enemy.y = 244
enemy.x = 480

---

---

Change to:

Code:

---

enemy={x=480, y=244}

---

If you want to add more enemies later then do this:

Code:

---

enemy={}
enemy[1]={x=480, y=244}
enemy[2]={x=460, y=244}

---

etc...


Also, you might want to read PSPillionaire's tutorials, they are really good and they explain all about arrays and anything you need to know about LUA. www.evilmana.com is his website where the tutorials are.

Yes, i know how to do that, and i have read the tutorial, but that doesnt fix my problem at all.

Code:

---

screen:blit(enemy.x,enemy.y,enemy1)
end
if enemy.x > 0 then
enemy.x = enemy.x - 10
end
screen:blit(enemy.x,enemy.y,enemy1)
screen.flip()

---

Try that.

Doesnt work, do you have another soloution? All i want is for enemy1 to move from right to left.

k well i'm back and i seen 1 answer to my question but it didn't help and so you don't have to go all the way back though heres my code to help:

Code:

---

black=Color.new(0,0,0)
green=Color.new(0,255,0)
bluepaintball=Image.load("C:/Documents and Settings/tim/pspaintball/bluepaintball.png")

oldpad=Controls.read()
currentpaintball=0

ballsxy={}
ballsxy[1]={x=0,y=10}

paintballs={}
for a=1,5 do
paintballs[a]={pic=bluepaintball,firing=false,x=ballsxy[1].x,y=ballsxy[1].y}
end

function paintballsetup()
if currentpaintball < 5 then
currentpaintball = currentpaintball + 1
else
currentpaintball = 1
end

paintballs[currentpaintball].firing=true
end

function paintballfire()
for i=1,5 do
if paintballs[i].firing==true then
paintballs[i].x=paintballs[i].x+10
end
screen:blit(paintballs[i].x, paintballs[i].y, paintballs[i].pic)
if paintballs[i].x>480 then paintballs[i].firing=false
end
end
end

while true do
pad=Controls.read()
screen:clear(black)

if pad:cross() and oldpad:cross() ~=pad:cross() then paintballsetup()
end

paintballfire()

screen:print(10,10,"paintball 1: ".. tostring(paintballs[1].firing),green)
screen:print(10,20,"paintball 2: "..tostring(paintballs[2].firing),green)
screen:print(10,30,"paintball 3: "..tostring(paintballs[3].firing),green)
screen:print(10,40,"paintball 4: "..tostring(paintballs[4].firing),green)
screen:print(10,50,"paintball 5: "..tostring(paintballs[5].firing),green)
screen:print(10,110,currentpaintball,green)

screen.waitVblankStart()
screen.flip()
oldpad=pad
end

---

if you look at it it runs fine just when you go though the first 5 then it stops fireing them can someone help me please=-)

ok ive got my randomization problem down to the part theres an error at

Code:

---

math.randomseed(os.time()  )
background = Image.load("background.PNG")
player = Image.load("ball.PNG")
block = Image.load("block.PNG")
space = Image.load("white.PNG")
--Variables
XAxis=100
YAxis=100
L1=0
System.usbDiskModeActivate()

while true do
screen:clear()
screen:blit(0, 0, background,  false)
screen:blit(XAxis, YAxis, player)
pad = Controls.read()
if pad:start() then
  break
end
if pad:right() then
  if XAxis<448 then
    XAxis=XAxis+6
  else
    XAxis=448
  end
end
if pad:left() then
  if XAxis>0 then
    XAxis=XAxis-6
  else
    XAxis=0
  end
end

--First Line

Line1 = {0,0,0,0,0,0,0,0}
if L1==0 then
Line1[1]=math.random(0,1)
Line1[2]=math.random(0,1)
Line1[3]=math.random(0,1)
Line1[4]=math.random(0,1)
Line1[5]=math.random(0,1)
Line1[6]=math.random(0,1)
Line1[7]=math.random(0,1)
Line1[8]=math.random(0,1)
YVars1=272
L1=1
end
if L1==1 then
  YVars1=YVars1-2
  if Line1[1]==0 then
    screen:blit(0, YVars1, block)
  end
  if Line1[1]==1 then
    screen:blit(0, YVars1, space)
  end
  if Line1[2]==0 then
    screen:blit(60, YVars1, block)
  end
  if Line1[2]==1 then
    screen:blit(60, YVars1, space)
  end
  if Line1[3]==0 then
    screen:blit(120, YVars1, block)
  end
  if Line1[3]==1 then
    screen:blit(120, YVars1, space)
  end
  if Line1[4]==0 then
    screen:blit(180, YVars1, block)
  end
  if Line1[4]==1 then
    screen:blit(180, YVars1, space)
  end
  if Line1[5]==0 then
    screen:blit(240, YVars1, block)
  end
  if Line1[6]==1 then
    screen:blit(300, YVars1, space)
  end
  if Line1[6]==0 then
    screen:blit(300, YVars1, block)
  end
  if Line1[7]==1 then
    screen:blit(360, YVars1, space)
  end
  if Line1[7]==0 then
    screen:blit(360, YVars1, block)
  end
  if Line1[8]==1 then
    screen:blit(420, YVars1, space)
  end
  if Line1[8]==0 then
    screen:blit(420, YVars1, block)
  end

screen.flip()
end
if YVars1==0 then 
YVars1=272
L1=0
end
end

---

the blue part is where the error is at. when i get rid of the if statment and just leave

Code:

---

Line1[1]=math.random(0,1)
Line1[2]=math.random(0,1)
Line1[3]=math.random(0,1)
Line1[4]=math.random(0,1)
Line1[5]=math.random(0,1)
Line1[6]=math.random(0,1)
Line1[7]=math.random(0,1)
Line1[8]=math.random(0,1)
YVars1=272
L1=1

---

it does the randomization fine. but when i add it back in it never assigns them the new number.

in thery this should write "hello" to the screen right?

if menustatus == 0 then
screen:print(10, 10, "hello", green)
screen:blit(0,0,bg1)
screen.flip()
end

its part of a menu, im wondering why doesnt the text show
edit nevermind, all i had to do was flip the text and pic around