Lua Programming Help Thread

quick question. Would this be the way to make the bullet stop after it hits a wall?

Code:

---

for e = 1,5 do
if (paintballInfo[e].x + bulletwidth > wall.x) and (paintballInfo[e].x < wall.x + wallwidth) and (paintballInfo[e].y + bulletheight > wall.y) and (paintballInfo[e].y < wall.y + wallheight) then
paintballInfo[e].firing = false
end

---

does anyone know how to edit strings?

the value of somthing in my array is
"2DU"
when i hit left(i can do that) i want it to get rid of(subtract) the U and when i hit right i want it to put(add) the U back into the string.

Zitat:

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Zitat von soadnation

does anyone know how to edit strings?

the value of somthing in my array is
"2DU"
when i hit left(i can do that) i want it to get rid of(subtract) the U and when i hit right i want it to put(add) the U back into the string.

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http://lua-users.org/wiki/StringLibraryTutorial
:)

That should help.

Zitat:

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Zitat von Mr.Game

quick question. Would this be the way to make the bullet stop after it hits a wall?

Code:

---

for e = 1,5 do
if (paintballInfo[e].x + bulletwidth > wall.x) and (paintballInfo[e].x < wall.x + wallwidth) and (paintballInfo[e].y + bulletheight > wall.y) and (paintballInfo[e].y < wall.y + wallheight) then
paintballInfo[e].firing = false
end

---

---

looks like it.
i gotta see the values for all those variables to be sure though.

hi, im posting from india. (that was random)

quik question:

i cant download windows lua here for a personal reason, so here is my question:

is it possible to put timers in an array?? ex:

Code:

---

dude = {}

for dudet = 1, 50 do
dude[dudet] = Timer.new()
end

---

can someone test it out pls? thx.

yes, you can put anything into an array, as long as you define it before hand. In LUA you have nothing to worry about really, C theres syntax that you must get right before you do anything.

oh and a quick reality check thing, a flashing on and off screen means too many flippings of the draw to display buffer, correct?

Zitat:

---

Zitat von Mr.Game

quick question. Would this be the way to make the bullet stop after it hits a wall?

Code:

---

for e = 1,5 do
if (paintballInfo[e].x + bulletwidth > wall.x) and (paintballInfo[e].x < wall.x + wallwidth) and (paintballInfo[e].y + bulletheight > wall.y) and (paintballInfo[e].y < wall.y + wallheight) then
paintballInfo[e].firing = false
end

---

---

I cant tell exactly but Im sure that you have a variable for the speed of the paintball? Just make an array of speeds for each individual paintball, that way you can make a simpel if statemnet saying if speed[x] hits wall/collision, then that speed = 0, then time it for like 2 seconds to make it disappear, x++.

hope you understand it somewhat?

Zitat:

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Zitat von SG57

yes, you can put anything into an array, as long as you define it before hand. In LUA you have nothing to worry about really, C theres syntax that you must get right before you do anything.

oh and a quick reality check thing, a flashing on and off screen means too many flippings of the draw to display buffer, correct?

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Correct SG57, if the screen flashes too much, it means you have extra "screen.flip()"s around your script somewhere.

has anyone had experience in string manipulation?

Zitat:

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Zitat von soadnation

has anyone had experience in string manipulation?

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Manipulation how?