mherkender/lua.js

Bug in operator <

Opened this issue · 4 comments

CarlosEFML commented

for some reason, the following code doesn't work (parser error) with lua+parser.min.js & lua+parser.js:

    local px = obj1:getPx()
    if (px<self.targetPos[1]) then

replacing

px<self.targetPos[1]

with

self.targetPos[1]>px

works great.

if the second operator is a numeric constant, everything works great also.

mherkender commented

I added a series of tests (tests/optest.lua) to try and figure out what's going on, but I wasn't able to reproduce this. Can you provide me with an isolated chunk of code that reproduces this error?

CarlosEFML commented

that's my source code (main.html, graphicsWEB.js and tcpSocketWEB.js). Locate

if(px<self.targetPos[1]) then

in main.html

Error message:
[20:32:42.936] Error: Parse error on line 564:
...= obj1:getPx()if(px=self.targetPos[1])
----------------------^
Expecting 'EOF', ';', '(', ')', 'LOCAL', 'DO', 'END', 'WHILE', 'REPEAT', 'UNTIL', 'IF', 'FOR', ',', 'FUNCTION', ':', 'NAME', 'RETURN', 'BREAK', 'ELSE', 'ELSEIF', 'THEN', '.', 'STRING', '+', '-', '*', '/', '^', '%', '..', '<', '>', '<=', '>=', '==', '~=', 'AND', 'OR', '{', '}', '[', ']', got '=' @ file:///C:/Users/Cadu/Downloads/LUA/WEB/MEUS_TESTES/teste2/lua+parser.js:613

main.html:

< html>
< body oncontextmenu="return false;">
< canvas width='480' height='272' id='gameCanvas1' >
< div id="divCode" style="display: none">

KEY_UP = 38
KEY_LEFT = 37
KEY_RIGHT = 39
KEY_DOWN = 40

GraphicsCallback = {}

function GraphicsCallback:new(callBack,data)
result = {}
setmetatable(result, self)
self.__index = self

result.callBack = callBack
result.data = data

return result
end

KeysCallback = {}

function KeysCallback:new(callBack,data)
result = {}
setmetatable(result, self)
self.__index = self

result.callBack = callBack
result.data = data

return result
end

PointerCallback = {}

function PointerCallback:new(callBack,data)
result = {}
setmetatable(result, self)
self.__index = self

result.callBack = callBack
result.data = data

return result
end

GameObj = {
sprite = nil,
px = 0,
py = 0,
active = false,
bbox = nil
}

function GameObj:new()
result = {}
setmetatable(result, self)
self.__index = self

return result
end

function GameObj:Init()
end

function GameObj:Draw()
local frame = self.sprite:getFrame()
if (frame==nil) then
return
end

if (self.sprite.animFlags[ANIM_FADE]==1) then
local lFrame = self.sprite.sprites[self.sprite.lastFrame+1]
local alpha1 = self.sprite.curFrameTime/self.sprite.frameTime

drawImageWithTransparency(lFrame,self.px,self.py,1-alpha1)
drawImageWithTransparency(frame,self.px,self.py,alpha1)
else
drawImage(frame,self.px,self.py)
end

end

function GameObj:Action(elapsedTime)
end

function GameObj:Collide(other)
local w1,h1,w2,h2,x1,y1,x2,y2

w1 = self.sprite:GetW()
h1 = self.sprite:GetH()
w2 = other.sprite:GetW()
h2 = other.sprite:GetH()

x1 = self.px
y1 = self.py
x2 = other.px
y2 = other.py

if ( ((x1 + w1) > x2) and ((y1 + h1) > y2) and
((x2 + w2) > x1) and ((y2 + h2) > y1) ) then
return true
else
return false
end
end

function GameObj:getPx()
return self.px
end

function GameObj:getPy()
return self.py
end

function GameObj:setPx(px)
self.px = px
end

function GameObj:setPy(py)
self.py = py
end

function GameObj:getActive()
return self.active
end

function GameObj:setActive(active)
self.active = active
end

local MAX_SPRITE_FRAMES = 5
ANIM_LOOP = 1
ANIM_LOOPBACK = 2
ANIM_REWIND = 3
ANIM_END = 4
ANIM_FADE = 5

Sprite = {
frame = 0,
lastFrame = 0,
nFrames = 0,
frameTime = 0,
curFrameTime = 0,
animFlags = {0,0,0,0,0},
animationListener = nil,
sprites = {}
}

function Sprite:new(nFrames,frameTime)
result = {}
setmetatable(result, self)
self.__index = self

result.nFrames = nFrames
result.frameTime = frameTime

local i = 1
while (i<=nFrames) do
result.sprites[i] = nil
i=i+1
end

return result
end

function Sprite:getFrame()
return self.sprites[self.frame+1]
end

function Sprite:GetW()
return self.sprites[self.frame+1]:GetWidth()
end

function Sprite:GetH()
return self.sprites[self.frame+1]:GetHeight()
end

function Sprite:setAnimFlags(flags)
self.animFlags = flags
end

function Sprite:getAnimFlags()
return self.animFlags
end

function Sprite:SelFrame(frameNo)
self.lastFrame = self.frame

if( frameNo>=self.nFrames) then
self.frame = self.nFrames-1
else
self.frame = frameNo
end

if (self.animationListener ~= nil) then
self.animationListener.OnFrame(frameNo)
end
end

function Sprite:NextFrame()
self.lastFrame = self.frame

if (self.nFrames<2) then
return false
end

if (self.animFlags[ANIM_REWIND]==1) then
if (self.frame==0) then
self.animFlags[ANIM_REWIND]=0
self.frame=1
else
self.frame=self.frame-1
end

return true
end

if (self.frame == (self.nFrames-1)) then
if (self.animFlags[ANIM_LOOP]==1) then
self.frame = 0
elseif (self.animFlags[ANIM_LOOPBACK]==1) then
self.animFlags[ANIM_REWIND]=1
self.frame = self.frame-1
else
self.animFlags[ANIM_END]=1
return false
end
else
self.frame = self.frame+1
end

return true
end

function Sprite:setAnimationListener(listener)
self.animationListener = listener
end

function Sprite:Animate(elapsedTime)
if (self.animFlags[ANIM_FADE]==1) then
if (self.lastFrame==self.frame) then
self:NextFrame()
end
end

self.curFrameTime = self.curFrameTime + elapsedTime
while (self.curFrameTime>=self.frameTime) do
local animed = self:NextFrame()
if ( (animed==true) and (self.animationListener~=nil) ) then
self.animationListener.OnFrame(self.frame)
end
self.curFrameTime = self.curFrameTime - self.frameTime
end
end

function Sprite:getNFrames()
return self.nFrames
end

function Sprite:SetFrame(frameNo, image)
self.sprites[frameNo] = image
end

Shot = GameObj:new()

function Shot:new()
result = {}
setmetatable(result, self)
self.__index = self

result.power = 0

return result
end

function Shot:Init()
end

function Shot:Action()
end

function Shot:getPower()
return self.power
end

function Shot:setPower(power)
self.power = power
end

function Shot:getExplosionAnim()
return nil
end

SimpleDecoration = GameObj:new()

function SimpleDecoration:new(spr,px,py)
result = {}
setmetatable(result, self)
self.__index = self

result.sprite = spr
result.px = px
result.py = py

return result
end

function SimpleDecoration:Action(elapsedTime)
self.sprite:Animate(elapsedTime)
if (self.sprite:getAnimFlags()[ANIM_END]==1) then
self:setActive(false)
end
end

AnimationData = {
id = nil,
numFrames = 0,
animFlags = {},
animFPS = 0,
frameName = nil,
imgs = nil
}

function AnimationData:new(id,numFrames,animFlags,animFPS,frameName)
result = {}
setmetatable(result, self)
self.__index = self

result.id = id
result.numFrames = numFrames
result.animFlags = animFlags
result.animFPS = animFPS
result.frameName = frameName

return result
end

local DEFAULT_ANIM_FPS = 30

INVALID_ANIM = 0
FOE1_WALK = 1
FOE1_ATTACK = 2
FOE1_DIE = 3
SHOT1 = 4
SHOT1Explode = 5

local animations = {
AnimationData:new(FOE1_WALK,5,{ANIM_LOOPBACK},5,"FOE1Walk"),
AnimationData:new(FOE1_ATTACK,5,{ANIM_LOOP},DEFAULT_ANIM_FPS,"FOE1Attack"),
AnimationData:new(FOE1_DIE,5,{},DEFAULT_ANIM_FPS,"FOE1Die"),
AnimationData:new(SHOT1,1,{},1,"SHOT1_"),
AnimationData:new(SHOT1Explode,4,{ANIM_LOOPBACK},DEFAULT_ANIM_FPS,"SHOT1Explode"),
AnimationData:new(INVALID_ANIM,0,{},0,0)
}

Resource={}

function Resource:clearAnim(animIndex)

local animFrame = 1
while (animFrame<=animations[animIndex].numFrames) do
print('devemos deletar animations[i].imgs[frame]')
animations[animIndex].imgs[animFrame] = nil
animFrame = animFrame+1
end

print('devemos deletar animations[i].imgs')
animations[animIndex].imgs = nil
end

function Resource:clear()
local i=1
while (animations[i].id~=INVALID_ANIM) do
self:clearAnim(i)

i=i+1
end
end

function Resource:getAnim(animID)
local i=1

while (animations[i].id~=INVALID_ANIM) do
if (animations[i].id==animID) then
if (animations[i].imgs == nil) then
if (self:loadAnimImgs(i) == nil) then
return nil
end
end
return self:buildSprite(i)
end
i = i+1
end

return nil
end

function Resource:buildSprite(animDataPos)
local spr = Sprite:new(animations[animDataPos].numFrames,1/animations[animDataPos].animFPS)
if (spr == nil) then
return nil
end

local i=1
while (i<=#animations[animDataPos].animFlags) do
spr.animFlags[animations[animDataPos].animFlags[i]] = 1
i = i+1
end

i=1
while (i<=animations[animDataPos].numFrames) do
spr:SetFrame(i,animations[animDataPos].imgs[i])
i = i+1
end

return spr
end

function Resource:loadAnimImgs(animDataPos)
local imgs = {}

local frame = 1
while (frame<=animations[animDataPos].numFrames) do
imgs[frame] = loadImg(animations[animDataPos].frameName..(frame)..".png")
if (imgs[frame]==nil) then
self:clearAnim(animDataPos)
return false
end

frame = frame + 1
end

animations[animDataPos].imgs = imgs
return true
end

Shot1 = Shot:new()

function Shot1:new()
result = {}
setmetatable(result, self)
self.__index = self

result.speed = 80
result.power = 1
result.sprite = nil

return result
end

function Shot1:Init()
self.sprite = Resource:getAnim(SHOT1)
end

function Shot1:Action(elapsedTime)
self.px = self.px + self.speed*(elapsedTime/1000)
end

function Shot1:getExplosionAnim()
local spr = Resource:getAnim(SHOT1Explode)

if (spr~=nil) then
local explosion = SimpleDecoration:new(spr,self.px,self.py)
if (explosion~=nil) then
explosion:setActive(true)
return explosion
else
print('devemos deletar spr')
end
end

return nil
end

local s = tcpConnect("74.125.229.208",80)
tcpSend(s,"GET\n")

local image = loadImg("flower.jpg")

local image2 = loadImg("Space_Background_bigger_transp.png")

local obj1 = GameObj:new()

obj1.sprite = Resource:getAnim(FOE1_WALK)

Game = {
elapsedTotalGraphics = 0,
elapsedTotalStatus = 0,
gameFPS = 0,
screenFPS = 0,
keysStatus = {},
targetPos = {23,35}
}

function Game:pointerUpdate(but,press,x,y)
if(press==1) then
self.targetPos[1]=x
self.targetPos[2]=y
end
end

function Game:keysUpdate(code, press)
self.keysStatus[code] = press
end

numD = 1
function Game:updateGraphics()
startFrame()
clear()

drawImageWithTransparency(image,0,0,numD)
numD = numD - 0.001

obj1:Draw()

drawLine(obj1:getPx(),0,obj1:getPx(),319, 255,0,0)
drawLine(0,obj1:getPy(),800,obj1:getPy(), 255,0,0)

drawText("OIOI",0,0,100,16,255,255,255,50)

endFrame()
end

function Game:updateStatus()
if( self.keysStatus[KEY_DOWN] == 1) then
obj1:setPy(obj1:getPy()+3)
self.targetPos[1]=nil
self.targetPos[2]=nil
end
if( self.keysStatus[KEY_UP] == 1) then
obj1:setPy(obj1:getPy()-3)
self.targetPos[1]=nil
self.targetPos[2]=nil
end
if( self.keysStatus[KEY_LEFT] == 1) then
obj1:setPx(obj1:getPx()-3)
self.targetPos[1]=nil
self.targetPos[2]=nil
end
if( self.keysStatus[KEY_RIGHT] == 1) then
obj1:setPx(obj1:getPx()+3)
self.targetPos[1]=nil
self.targetPos[2]=nil
end

if(self.targetPos[1]~=nil) then
local px = obj1:getPx()
if(px<self.targetPos[1]) then
px = px+3
if(px>=self.targetPos[1]) then
px = self.targetPos[1]
self.targetPos[1] = nil
end
elseif (px>self.targetPos[1]) then
px = px-3
if(px<=self.targetPos[1]) then
px = self.targetPos[1]
self.targetPos[1] = nil
end
end
obj1:setPx(px)
end

if(self.targetPos[2]~=nil) then
local py = obj1:getPy()
if(self.targetPos[2]>py) then
py = py+3
if(py>=self.targetPos[2]) then
py = self.targetPos[2]
self.targetPos[2] = nil
end
elseif (py>self.targetPos[2]) then
py = py-3
if(py<=self.targetPos[2]) then
py = self.targetPos[2]
self.targetPos[2] = nil
end
end
obj1:setPy(py)
end

obj1.sprite:Animate(self.gameFPS)
end

function Game:gameUpdate(elapsedTime)
self.elapsedTotalStatus = self.elapsedTotalStatus + elapsedTime
self.elapsedTotalGraphics = self.elapsedTotalGraphics + elapsedTime

while(tcpIsConnected(s)) do
local t = tcpRecv(s)
if(t==nil) then break end
print(t)
end

local nskip = 0
if (self.elapsedTotalGraphics>self.screenFPS) then
self:updateGraphics(self.elapsedTotalGraphics)
self.elapsedTotalGraphics = self.elapsedTotalGraphics - self.screenFPS
while (self.elapsedTotalGraphics>self.screenFPS) do
self.elapsedTotalGraphics = self.elapsedTotalGraphics - self.screenFPS
nskip=nskip+1
end
end

while (self.elapsedTotalStatus>self.gameFPS) do
self:updateStatus()
self.elapsedTotalStatus = self.elapsedTotalStatus - self.gameFPS
end

end

function gameUpdateCB(elapsedTime, data)
local game = data

game:gameUpdate(elapsedTime)
end

function keysUpdateCB(code, press, data)
local game = data

game:keysUpdate(code,press)
end

function pointerUpdateCB(but,press,x,y, data)
local game = data

game:pointerUpdate(but,press,x,y)
end

function Game:init()
local cbData = self

initGraphics(
GraphicsCallback:new(gameUpdateCB,cbData),
KeysCallback:new(keysUpdateCB,cbData),
PointerCallback:new(pointerUpdateCB,cbData)
)
end

function Game:new()
result = {}
setmetatable(result, self)
self.__index = self

result.gameFPS = 1/30
result.screenFPS = 1/60

return result
end

function main()
local game = Game:new()
game:init()
end

main()

< /div>
< script type="text/javascript" src="lua+parser.min.js"></script>
< script type="text/javascript" src="lua+parser.js"></script>
< script type="text/javascript" src="graphicsWEB.js"></script>
< script type="text/javascript" src="tcpSocketWEB.js"></script>
< script type="text/javascript">
var divCodeHTML = document.getElementById("divCode").innerHTML;
var divCode = document.getElementById("divCode").textContent || document.getElementById("divCode").innerText;
var fun = lua_load(divCode,"teste");
var _G = fun();
< /script>
< /body>
< /html>

graphicsWEB.js (required by main.html):

var timer = null;

var graphicsCB = null;
var keysCB = null;
var pointerCB = null;

var gameCanvas1EL = document.getElementById("gameCanvas1");
var gameCanvas1 = gameCanvas1EL.getContext('2d');

gameCanvas1EL.onmousedown = function(evt)
{
var cbData = lua_tableget(pointerCB,"data");
lua_tableget(pointerCB,"callBack")(evt.button,1,(evt.clientX-gameCanvas1EL.offsetLeft),(evt.clientY-gameCanvas1EL.offsetTop),cbData);
evt.preventDefault();
evt.stopPropagation();
return false;
}

gameCanvas1EL.onmouseup = function(evt)
{
var cbData = lua_tableget(pointerCB,"data");
lua_tableget(pointerCB,"callBack")(evt.button,0,(evt.clientX-gameCanvas1EL.offsetLeft),(evt.clientY-gameCanvas1EL.offsetTop),cbData);
evt.preventDefault();
evt.stopPropagation();
return false;
}

document.onkeydown=function(evt)
{
var cbData = lua_tableget(keysCB,"data");
lua_tableget(keysCB,"callBack")(evt.keyCode,1,cbData);
}

document.onkeyup=function(evt)
{
var cbData = lua_tableget(keysCB,"data");
lua_tableget(keysCB,"callBack")(evt.keyCode,0,cbData);
}

lua_core["startFrame"] = function()
{
}

lua_core["endFrame"] = function()
{
}

lua_core["clear"] = function()
{
gameCanvas1.clearRect(0, 0, gameCanvas1EL.width, gameCanvas1EL.height)
}

lua_core["drawText"] = function (texto,x,y,wid,fontSize,r,g,b,alpha)
{
}

lua_core["drawLine"] = function (x1,y1,x2,y2, r,g,b)
{
}

lua_core["drawImage"] = function (image,x,y)
{
gameCanvas1.drawImage(image,x,y)
}

lua_core["drawImageWithTransparency"] = function(image,x,y,transparency)
{
gameCanvas1.globalAlpha = transparency;
gameCanvas1.drawImage(image,x,y);
gameCanvas1.globalAlpha = 1;
}

lua_core["initGraphics"] = function(graphics_cb,keys_cb,pointer_cb)
{
graphicsCB = graphics_cb;
keysCB = keys_cb;
pointerCB = pointer_cb;
timer = setInterval('action()',1);
}

lua_core["loadImg"] = function(fname)
{
var img = new Image();
img.src = fname;

return [img];

}

var lastTime = 0;
var currTime = 0;
function action()
{
currTime = new Date();
var cbData = lua_tableget(graphicsCB,"data");
if(lastTime == 0)
{
lua_tableget(graphicsCB,"callBack")(0,cbData);
}
else
{
lua_tableget(graphicsCB,"callBack")( (currTime.getTime() - lastTime.getTime())/1000,cbData);
}
lastTime=currTime;
}

tcpSocketWEB.js (required by main.html):

lua_core["tcpConnect"] = function(address,port)
{
var ws = new WebSocket('ws://'+address+':'+port);
ws.onmessage = function (e) {
console.log('Server: ' + e.data);
}
return ws;
}

lua_core["tcpSend"] = function(mySock,data)
{
/* mySock.send(data);*/
}

lua_core["tcpRecv"] = function(mySock,data)
{
return null;
}

lua_core["tcpIsConnected"] = function(mySock)
{
return false;
}

CarlosEFML commented

please replace spaces in main.html tags

cmwelsh commented

Try loading it into a gist https://gist.github.com/ or indent the entire thing by 4 spaces to use code formatting mode.