Lua Programming Help Thread

Just use this:

if player.x == enemy.x then
FireBullet()
end
if bullet.y > player.y then
bullet.y = bullet.y - 4
end


This will make it, so when you fire the bullet, it will come straight down. And it will only fire if the player is directly under the enemy.

ok i guess that will work thnx

i see what you are doing!

easy, as long asyour player saysy at the same 'y' location, just make its x loaction be called bulletdestination then make thhe bullets go to there

You can also make it a little more tolerant. Like it the player is sort of under it. Like this:
if (player.x + 10) == enemy.x then
FireBullet()
end
if (player.x - 10) == enemy.x then
FireBullet()
end
This will make it so if the player is kind of under the enemy, it will fire. You can also change the speed of the bullet from 4 to something faster.
-= Double Post =-

Zitat:

---

Zitat von Glynnder

i see what you are doing!

easy, as long asyour player saysy at the same 'y' location, just make its x loaction be called bulletdestination then make thhe bullets go to there

---

Yeah but you don't want the bullet to follow the player. Bullets go in straight lines not loops and zigzags.

How can I make the text from Image2 go into Image1??? Images were borrowed from ProgramLua to show an example...

**Image1**
http://i12.photobucket.com/albums/a2...ingo/Blank.png
**Image2**
http://i12.photobucket.com/albums/a2...go/Tut1pg1.png

Well image 2 is transparent, so just paste 2 on top of 1. Like this:

screen:blit(0,0,image1)
screen:blit(0,0,image2)

Thanks ARza, sorry for using ur images without asking u...

Zitat:

---

Zitat von Dr.Gringo

Thanks ARza, sorry for using yours and Appleseed629's images without asking u...

---

Corrected :).

It's cool, you weren't really using them. Only for an example.

How do I make the player move if the player moves the analog stick in Lua?

You know you dont know the concept when you always use game specifics when asking for help ;)

You should be asking how to manipulate a variable, using hte analog stick...

I havent used LUA in forever, so i dont know the control name for the analog stick, but it ranges from -128 - +128, so say if pad:analogX() > 50 then increase_x_co-ordinate...

Once you have blitted a text image how do you change to another??? Is it going to overlap or would it just substitute...

Zitat:

---

Zitat von Dr.Gringo

LOL, Yeah sure Appleseed629

---

I assume you don't know that ARza and I made it together? Look in the credits.

Zitat:

---

Zitat von SG57

You know you dont know the concept when you always use game specifics when asking for help ;)

You should be asking how to manipulate a variable, using hte analog stick...

I havent used LUA in forever, so i dont know the control name for the analog stick, but it ranges from -128 - +128, so say if pad:analogX() > 50 then increase_x_co-ordinate...

---

It's actually from -127 to 128. -128 will give you an error.

Zitat:

---

Zitat von SG57

You know you dont know the concept when you always use game specifics when asking for help ;)

You should be asking how to manipulate a variable, using hte analog stick...

I havent used LUA in forever, so i dont know the control name for the analog stick, but it ranges from -128 - +128, so say if pad:analogX() > 50 then increase_x_co-ordinate...

---

Thanks :D .

Zitat:

---

Zitat von ARza

It's actually from -127 to 128. -128 will give you an error.

---

Thanks :D !

lol, ouch no recognition.
and its analog_x methinks

Zitat:

---

Zitat von Glynnder

lol, ouch no recognition.
and its analog_x methinks

---

Tell me about it. Every person who thinks ProgramLua is great knows that I did half of the work. Except Dr. Gringo.

And... hey, Glynnder, you keep changing your sig. Maybe I should make one for ya? That'll be 500 poitns please. Lol!

As most of you probably know, I'm making a game where you draw designs. I have the drawing part done. When you press X on a square, it turns it black. O turns it white. Well, when trying it on my PSP it runs horribly slow. I am using PSPmillionaire's scrolling tile engine. I modified it to work. But when it's on a PSP is runs slow. I've tried .16 and .20. I even tried the .20 mod by Cools and set the CPU to 333 and it still runs slow. Here's my code, any suggestions?

Code:

---

-- Define Variables
--==============
currenty = 3
currentx = 3

Colliding = false
--Images

black = Color.new(0,0,0)
white = Color.new(255,255,255)
Images = { }
Images[1] = Image.createEmpty(5,5)
Images[2] = Image.createEmpty(5,5)
Images[1]:clear(black)
Images[2]:clear(white)
Images[50] = Image.load("Selector.png")
base = Image.load("Base.png")
TILE_SIZE = 6
CHARACTER_SIZE = 7
MAP_WIDTH = 42
MAP_HEIGHT = 42
SCREEN_HEIGHT = 272
SCREEN_WIDTH = 480
SCREEN_WIDTH_BOUNDARY = 480
SCREEN_HEIGHT_BOUNDARY = 272
SCROLL_BOUNDARY = TILE_SIZE*7.5
SCROLL_BOUNDARY2 = TILE_SIZE*2.5
STAT_BOX_HEIGHT = 40
MX = TILE_SIZE
MY = TILE_SIZE
player = {speed = 6,x = 11, y = 11}

 map = { }
  map[1] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[2] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[3] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[4] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[5] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[6] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[7] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[8] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[9] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[10] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
    map[11] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[12] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[13] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[14] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[15] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[16] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[17] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[18] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[19] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[20] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
    map[21] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[22] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[23] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[24] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[25] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[26] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[27] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[28] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[29] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[30] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
    map[31] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[32] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[33] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[34] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[35] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[36] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[37] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[38] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[39] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
  map[40] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
 map[41] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}
 map[42] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}



function CollisionOverlaps(px, py)
  px = px + (MX-TILE_SIZE)
  py = py + (MY-TILE_SIZE)
  mapx1 = math.floor(px / TILE_SIZE + 1)
  mapy1 = math.floor(py / TILE_SIZE + 1)
  mapx2 = math.floor((px+CHARACTER_SIZE) / TILE_SIZE + 1)
  mapy2 = math.floor(py / TILE_SIZE + 1)
  mapx3 = math.floor(px / TILE_SIZE + 1)
  mapy3 = math.floor((py+CHARACTER_SIZE) / TILE_SIZE + 1)
  mapx4 = math.floor((px+CHARACTER_SIZE) / TILE_SIZE + 1)
  mapy4 = math.floor((py+CHARACTER_SIZE) / TILE_SIZE + 1)

  id1 = getMapTile(mapy1, mapx1)
  id2 = getMapTile(mapy2, mapx2)
  id3 = getMapTile(mapy3, mapx3)
  id4 = getMapTile(mapy4, mapx4)



if id1 < 50 and id2 < 50 and id3 < 50 and id4 < 50  then
Colliding = false
else
Colliding = true
end
end




function getMapTile(y,x)
  if x >= 0 and x <= MAP_WIDTH and y >= 0 and y <= MAP_HEIGHT then
      img = map[y][x]
  return img
else return 0
end
end


function drawMap(mapDrawX, mapDrawY)

  mapx = math.floor(mapDrawX / TILE_SIZE)
  mapy = math.floor(mapDrawY / TILE_SIZE)
  xoff = math.floor(mapDrawX and (TILE_SIZE-1))
  yoff = math.floor(mapDrawY and (TILE_SIZE-1))
  xoff = math.floor(mapDrawX - mapx*TILE_SIZE)
  yoff = math.floor(mapDrawY - mapy*TILE_SIZE)

  for x = 2,42 do
      for y = 2,42 do
        img = getMapTile(mapy+y, mapx+x)
        if img > 0 then screen:blit(x*TILE_SIZE - xoff, y*TILE_SIZE - yoff,Images[img]) end
      end
  end
end




function PositionPlayer(x, y)
  screen:blit(x,y,Images[50])
end

--Main Loop
oldpad = Controls.read()
while true do
screen:clear()
screen:blit(0,0,base)

oldPlayerX = player.x
oldPlayerY = player.y
pad = Controls.read()
if pad:up() and oldpad:up() ~= pad:up() then
player.y = player.y - 6
currenty = currenty - 1
end
if pad:down() and oldpad:down() ~= pad:down() then
player.y = player.y + 6
currenty = currenty + 1
end
if pad:right() and oldpad:right() ~= pad:right() then
player.x = player.x + 6
currentx = currentx + 1
end
if pad:left() and oldpad:left() ~= pad:left() then
player.x = player.x - 6
currentx = currentx - 1
end
if pad:up() and oldpad:up() ~= pad:up() and pad:square() then
player.y = player.y - 24
currenty = currenty - 4
end
if pad:down() and oldpad:down() ~= pad:down() and pad:square() then
player.y = player.y + 24
currenty = currenty + 4
end
if pad:right() and oldpad:right() ~= pad:right() and pad:square() then
player.x = player.x + 24
currentx = currentx + 4
end
if pad:left() and oldpad:left() ~= pad:left() and pad:square() then
player.x = player.x - 24
currentx = currentx - 4
end
if player.y > 245 then
player.y = 245
end
if player.x > 245 then
player.x = 245
end
if player.y < 11 then
player.y = 11
end
if player.x < 11 then
player.x = 11
end
if currentx > 42 then
currentx = 42
end
if currentx < 3 then
currentx = 3
end
if currenty > 42 then
currenty = 42
end
if currenty < 3 then
currenty = 3
end
if pad:circle() and oldpad:circle() ~= pad:circle() then
map[currenty][currentx] = 2
end
if pad:cross() and oldpad:cross() ~= pad:cross() then
map[currenty][currentx] = 1
end
CollisionOverlaps(player.x,player.y)
if Colliding == true then
player.x = oldPlayerX
player.y = oldPlayerY
else
end
MXa = math.floor(MX)
MYa = math.floor(MY)
drawMap(MXa,MYa)
PositionPlayer(player.x, player.y)
--PrintStats(player)
screen.waitVblankStart()
screen:flip()
oldpad = pad
end

---

Once you have blitted a text image how do you change to another??? Is it going to overlap or would it just substitute...

I did know that Appleseed629 did half of programlua however i said arza because he was on the above post, rofl

Zitat:

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Zitat von Dr.Gringo

Once you have blitted a text image how do you change to another??? Is it going to overlap or would it just substitute...

---

why did you post the same question twice?? anyway, what do you mean by "text image"?? like an image with text on it?? it so, just clear the screen, and blit the next image. OR, keep the background image the same, and just substitue the text.

I did this:

current = 1
image = {}
image[1] = "image.png"
image[2] = "image.png"
image[3] = "image.png"
image[4] = "image.png"
current_image = nil
current_image = Image.load(image[current])

Understand? If you change the variable "current" the image will change.

Zitat:

---

Zitat von Dr.Gringo

Once you have blitted a text image how do you change to another??? Is it going to overlap or would it just substitute...

I did know that Appleseed629 did half of programlua however i said arza because he was on the above post, rofl

---

Then why did you say, "Sure, Appleseed629." That I wonder...

ProgramLua is like that: it changes to another image when you press a button. If you want two images at the same time, you're gonan have to move the second by 1 more in the x/y coordinate.

Arza if i do it your method would i have to Load all the images at the beginning of my script

Zitat:

---

Zitat von Dr.Gringo

Arza if i do it your method would i have to Load all the images at the beginning of my script

---

not necessaliry. but you have to load them before yu use them.

and try not to load them in your while true do loop, thats make your game VERY VERY slow.

When I clear the screen how can i keep my background and only change the picture with the text.

Example:

Code:

---

oldpad = Controls.read()
while true do
pad=Controls.read()
screen:clear()
screen:blit(0, 0, clear, false)

if pad:down() and oldpad:down() ~= pad:down() and current = 20 then
pictext = Image.load("images/pictext.png")
screen:blit(0, 0, pictext, false)
end

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

---

Zitat:

---

Zitat von Dr.Gringo

When I clear the screen how can i keep my background and only change the picture with the text.

Example:

Code:

---

oldpad = Controls.read()
while true do
pad=Controls.read()
screen:clear()
screen:blit(0, 0, clear, false)

if pad:down() and oldpad:down() ~= pad:down() and current = 20 then
pictext = Image.load("images/pictext.png")
screen:blit(0, 0, pictext, false)
end

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

---

---

actually, ur gonna have to make an array:

Code:

---

text = {}
text[1] = Image.load("yourtextimagename")
-- etc.
currentText = 0

oldpad = Controls.read()

while true do

pad=Controls.read()
screen:clear()
screen:blit(0, 0, clear, false)

if currentText ~= 0 then
screen:blit(0, 0, text[currentText])
end


if pad:down() and oldpad:down() ~= pad:down() and current = 20 then
currentText = 1
end

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

---

what's wrong with this one

Code:

---

red = Color.new(255,0,0)
black = Color.new(0,0,0)
white = Color.new(255,255,255)

menustatus = 1

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

if pad:up() then
menustatus = menustatus - 1
screen.waitVblankStart(4) 
end

if pad:down() then
menustatus = menustatus + 1
screen.waitVblankStart(4) 
end

color={white, white, white}
while true do
screen:print(50, 50, "Play", color[1])
screen:print(50,60,"Options", color[2])
screen:print(50,70,"Exit", color[3])
end
color[menustatus]=red

if menustatus == 1 then
    if pad:cross() then
    screen:clear()
    screen:print(50, 50, "Play", color[1])
    end
end

if menustatus == 2 then
    if pad:cross() then
    screen:clear()
    screen:print(50, 50, "Play", color[1])
    end
end

if menustatus == 3 then
    if pad:cross() then
    break
    end
end

if menustatus <= 0 then
    menustatus = 3
    end

if menustatus => 4 then
  menustatus = 1
  end

screen.flip()
screen.waitVblankStart()
end

---

Zitat:

---

Zitat von hallo007

what's wrong with this one

Code:

---

red = Color.new(255,0,0)
black = Color.new(0,0,0)
white = Color.new(255,255,255)

menustatus = 1

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

if pad:up() then
menustatus = menustatus - 1
screen.waitVblankStart(4) 
end

if pad:down() then
menustatus = menustatus + 1
screen.waitVblankStart(4) 
end

color={white, white, white}
while true do
screen:print(50, 50, "Play", color[1])
screen:print(50,60,"Options", color[2])
screen:print(50,70,"Exit", color[3])
end
color[menustatus]=red

if menustatus == 1 then
    if pad:cross() then
    screen:clear()
    screen:print(50, 50, "Play", color[1])
    end
end

if menustatus == 2 then
    if pad:cross() then
    screen:clear()
    screen:print(50, 50, "Play", color[1])
    end
end

if menustatus == 3 then
    if pad:cross() then
    break
    end
end

if menustatus <= 0 then
    menustatus = 3
    end

if menustatus => 4 then
  menustatus = 1
  end

screen.flip()
screen.waitVblankStart()
end

---

---

You have two 'While true do' loops

Working on a game. Here's my code.

Code thats a problem -

Code:

---

EnemyList = {1,2,3,4,5,6}
     
      (REST OF CODE)

      if Enemy[EnemyList[target]].health <= 0 then
        Enemy[EnemyList[target]].state = "dead"
      end

      if Enemy[EnemyList[Length]].state = "dead" then
        screen:print(10, 130, "You killed all the enemies")
      end

---

Example of my table -

Code:

---

Enemy = {}
Enemy[1] = {name = "Zombie", damage = 3, health = 15, combatx = 300, combaty = 5, image = mzombie, state = "living"}
Enemy[2] = {name = "Zombie", damage = 3, health = 20, combatx = 310, combaty = 15, image = mzombie2, state = "living"}

---

The error I get is " 'then' expected near '=' "

I probably didn't need to include all that information, but more is better then less. This is probably an easy solution also, but I don't care b/c im tired.

Zitat:

---

Zitat von CtrlAltDeleteDie

Working on a game. Here's my code.

Code thats a problem -

Code:

---

EnemyList = {1,2,3,4,5,6}
     
      (REST OF CODE)

      if Enemy[EnemyList[target]].health <= 0 then
        Enemy[EnemyList[target]].state = "dead"
      end

      if Enemy[EnemyList[Length]].state = "dead" then
        screen:print(10, 130, "You killed all the enemies")
      end

---

Example of my table -

Code:

---

Enemy = {}
Enemy[1] = {name = "Zombie", damage = 3, health = 15, combatx = 300, combaty = 5, image = mzombie, state = "living"}
Enemy[2] = {name = "Zombie", damage = 3, health = 20, combatx = 310, combaty = 15, image = mzombie2, state = "living"}

---

The error I get is " 'then' expected near '=' "

I probably didn't need to include all that information, but more is better then less. This is probably an easy solution also, but I don't care b/c im tired.

---

you need two '=' to compare:

Code:

---

EnemyList = {1,2,3,4,5,6}
     
      (REST OF CODE)

      if Enemy[EnemyList[target]].health <= 0 then
        Enemy[EnemyList[target]].state = "dead"
      end

      if Enemy[EnemyList[Length]].state == "dead" then
        screen:print(10, 130, "You killed all the enemies")
      end

---

Example of my table -

Code:

---

Enemy = {}
Enemy[1] = {name = "Zombie", damage = 3, health = 15, combatx = 300, combaty = 5, image = mzombie, state = "living"}
Enemy[2] = {name = "Zombie", damage = 3, health = 20, combatx = 310, combaty = 15, image = mzombie2, state = "living"}

---

Wow. I messed up something. If all of the Enemies' states are equal to "dead", then I want it to print a message. How would I go about doing that. Look above for messed up code.

Please... Before making a game, understand the concept of programming and the routines used to do what you want.

Code:

---

zombies_dead = 0

for i=0,6 do
    if Enemy[i].state == "dead" then
          zombies_dead = zombies_dead + 1
    end
end

...

if zombies_dead == 6 then screen:print(0,0,"Zombies all dead...",color) end

---

This is the most efficient way I see fit.

I'm having a bit of a problem adding a start menu to a game that im helping to make. i get this error.

error: game.lua;246: attempt to compare nil with a number
Error: No script file found.

Any help would be great.

Code:

---

--Conker Mini
--Aug 26, 2006

black = Color.new(0, 0, 0)
white = Color.new(255,255,255)
green = Color.new(0,255,0)
red = Color.new(255,0,0)
textcolor = Color.new(0, 0, 0)
selecolor = Color.new(255, 255, 255)
editcolor = Color.new(0, 0, 0)
cursorcolor = Color.new(255, 250, 250)
scene = {}
healthbar = {}
healthbar.y = 10
background = Image.load("images/background.png")
background2 = Image.load("images/background.png")
start = Image.load("images/start.png")
conkerPoint = 0
Player1 = Image.load("images/conker/right/conker1.png")
Player2 = Image.load("images/conker/right/conker2.png")
Player3 = Image.load("images/conker/right/conker3.png")
Player1L = Image.load("images/conker/left/conker1.png")
Player2L = Image.load("images/conker/left/conker2.png")
Player3L = Image.load("images/conker/left/conker3.png")
Player = {}
Player.image = Player1
Playera = Image.load("images/conker/right/conkera.png")
Playera2 = Image.load("images/conker/left/conkera2.png")
Playerj = Image.load("images/conker/right/conkerj.png")
Playerj2 = Image.load("images/conker/left/conkerj2.png")
Playerp = {}
Playerc = {}
Player.y = 200
Player.x = 0
Player.lives = 4
Player.health = 200
Player.gravity = 200
Player.jumpspeed = 10
Player.jumpstate = "ground"
playerHeight = 66
playerWidth = 55
x = 0

counter = Timer.new()
counter:start()
oldTime = counter:time()

Timer = 0

pad = Controls.read

function moveRight()
Timer = Timer + 1

 if Timer>= 25 or Timer<=0  then
    Timer = 0
      end       
                           
        if Timer==5 then
        Player.image = Player1
        end
       
        if Timer==10 then
        Player.image = Player2
        end
       
        if Timer==15 then
        Player.image = Player3
        end
end       

function moveLeft()
Timer = Timer + 1

 if Timer>= 25 or Timer<=0  then
    Timer = 0
      end       
                           
        if Timer==5 then
        Player.image = Player1L
        end
       
        if Timer==10 then
        Player.image = Player2L
        end
       
        if Timer==15 then
        Player.image = Player3L
        end
end

--Conker Music
--Aug 26, 2006

Music.playFile("music/windy.it", false)       

while true do

pad = Controls.read()

--print background
--Aug 22, 2006

screen:clear()
screen:blit(0,0,background)

--print Conker
--Aug 23, 2006

screen:blit(Player.x,Player.y,Player.image,true)

--Conker walk right
--Aug 22, 2006

if pad:right() then
moveRight()
Player.x = Player.x+4
end


--Conker walk left
--Aug 23, 2006

if pad:left() then
moveLeft()
Player.x = Player.x-4
end

--Conker attack
--Aug 24, 2006

if pad:cross() and oldpad:cross()~=pad:cross() then
if Player.image == Player1 or Player.image == Player2 or Player.image == Player3 or Player.image == Playerj then
Player.image = Playera
end
if Player.image == Player1L or Player.image == Player2L or Player.image == Player3L or Player.image == Playerj2 then
Player.image = Playera2
end
end

if Player.image == Playera then
conkerPoint = conkerPoint + 1
end
if Player.image == Playera2 then
conkerPoint = conkerPoint + 1
end

if Player.image == Playera and conkerPoint == 14  then
Player.image = Player1
conkerPoint = 0
end
if Player.image == Playera2 and conkerPoint == 14  then
Player.image = Player1L
conkerPoint = 0
end


--Conker Jump
--Aug 24, 2006

if pad:up() and pad:up() ~= oldpad:up() and Player.jumpstate == "ground" and Player.image ~= Playerc and Player.image ~= Playerp and Player.image ~= Playerc2 and Player.image ~= Playerp2 then
Player.jumpstate = "jumping"
end

if Player.jumpstate == "jumping" then
Player.jumpspeed = Player.jumpspeed - 0.5
Player.gravity = Player.gravity - Player.jumpspeed
end

if Player.gravity < 200 and Player.jumpstate == "falling" then
Player.gravity = Player.gravity + (Player.jumpspeed + 3)
end

if Player.gravity == 200 then
Player.jumpspeed = 10
Player.jumpstate = "ground"
end

if Player.jumpstate == "jumping" and Player.image == Player1 then
Player.image = Playerj
end
if Player.jumpstate == "jumping" and Player.image == Player2 then
Player.image = Playerj
end
if Player.jumpstate == "jumping" and Player.image == Player3 then
Player.image = Playerj
end
if Player.jumpstate == "jumping" and Player.image == Player1L then
Player.image = Playerj2
end
if Player.jumpstate == "jumping" and Player.image == Player2L then
Player.image = Playerj2
end
if Player.jumpstate == "jumping" and Player.image == Player3L then
Player.image = Playerj2
end
if Player.jumpstate == "ground" and Player.image == Playerj then
Player.image = Player1
end
if Player.jumpstate == "ground" and Player.image == Playerj2 then
Player.image = Player1L
end

if Player.gravity > 200 then Player.gravity = 200
end

Player.y = Player.gravity

--Healthbar
--Aug 24, 2006

screen:fillRect(0,0,480,30,black)
screen:fillRect(29,9,202,12,white)
screen:fillRect(30,10,200,10,red)
screen:fillRect(30,10,Player.health, healthbar.y, green)
screen:print(30,0, "Health:" .. Player.health,green)
screen:print(260,0,"Lives left:",green)
screen:print(260,10,Player.lives,green)

if Player.health <= -1 then
Player.health = Player.health + 1
end

if Player.health <= 0 and Player.lives > 0  then
reSpawn()
end

if Player.lives == -1 then
Player.lives = Player.lives + 1
end

--Exit game
--Aug 22, 2006

if pad:start() and oldpad:start()~=pad:start() then
                        screen.waitVblankStart(10)
                        while true do
                                screen:clear()
                                screen:blit(0,0,start)
                                pad=Controls.read()
                                if pad:up() and oldpad:up()~=pad:up() then
                                        sel=sel-1
                                elseif pad:down() and oldpad:down()~=pad:down() then
                                        sel=sel+1
                                end
                                if sel<1 then sel=3 end
                                if sel>3 then sel=1 end
                                local choice={"Save","Save & Quit","Quit"}
                                local chcol={editcolor,editcolor,editcolor,editcolor}
                                chcol[sel]=selecolor
                                screen:blit(190,106,start)
                                screen:print(224,117,choice[1],chcol[1])
                                screen:print(196,127,choice[2],chcol[2])
                                screen:print(224,137,choice[3],chcol[3])
                                if pad:start() then break end
                                if pad:cross() then
                                        if sel==1 or sel==2 then
                                        break       
                                        end
                                        if sel==2 or sel==3 then
                                        break       
                                        end
                                        break
                                end
end
end

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

---

Zitat:

---

Zitat von SG57

Please... Before making a game, understand the concept of programming and the routines used to do what you want.

---

Sorry I don't understand all the concepts. I know that if you program in C then you must understand everything because its so much better than Lua.

But thanks for the help anyways. :tup:

come on... interpret the error....... Its saying that 'sel' isn't a variable. You haven't declared 'sel' anywhere.

Just add: sel = 1
To the top of your script somewhere as a global variable.

thanks sg57, now it dosent error.. but it displays and goes away real fast.

add a extra screen.waitVblankStart(12 0) or w/e (thats for 2 seconds). That might help... which line is the error on, i dont want to count :p

btw, I recognize that animation ;)

That delay wont do anything to my understandings... Remove your screen:clear() statement when entering the loop. Place it outside the loop but still to be declared when START is pressed, that way it only clears the screen once, then starts to draw in the while loop.

Code:

---

if pad:select() then
break
end
if pad:start() then
screen:clear()
end
if pad:start() and oldpad:start()~=pad:start() then
                        screen.waitVblankStart(10)
                        while true do
                                screen:blit(0,0,start)
                                pad=Controls.read()
                                if pad:up() and oldpad:up()~=pad:up() then
                                        sel=sel-1
                                elseif pad:down() and oldpad:down()~=pad:down() then
                                        sel=sel+1
                                end
                                if pad:start() and oldpad:start()~=pad:start() then
                                break
                                end
                                if sel<1 then sel=3 end
                                if sel>3 then sel=1 end
                                local choice={"Save","Save & Quit","Quit"}
                                local chcol={editcolor,editcolor,editcolor,editcolor}
                                chcol[sel]=selecolor
                                screen:blit(190,106,start)
                                screen:print(224,117,choice[1],chcol[1])
                                screen:print(196,127,choice[2],chcol[2])
                                screen:print(224,137,choice[3],chcol[3])
                                        if pad:cross() then
                                        if sel==1 or sel==2 then
                                        break       
                                        end
                                        if sel==2 or sel==3 then
                                        break       
                                        end
                                        break
                                end
end
end

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

---

is this what you were trying to tell me to do? Probably not cause it dosent do right either.. and i added the break in there so i can restart the script. I'm using an EBOOT.

@bronx, i wonder why :D

Another way to do it would be to put "oldpad=pad" right after you check for the button press. That would make it so you don't need the delay. Also, it will act funky because you forgot to put that same line at the end of the while loop. Alternatively, you could just put that line once at the very top of the while loop. As long as it is in there, it will stop the start menu from exiting.