The Powder Toy

lillepallt

@kinloch tpt is currently written in C but it's being port to C++. Try starting with a lua mod it's so much more simple..

Edited for edit: 1. you mean like an in-game GUI for element building? I kinda like altought it still just could be private since of datacollision.. Seems unnecessary thought since we got lua..

_kinloch_

I am glad its wriiten in c and is being ported to c++ as they are programing languages I am hopeing to learn.
Lua is also on my to learn list, even more so now.

also as far as I know when you make a lua mod with new elements the new elements are old ones that are changed so if you want one of the old onese unchanged and the lua mod then there is a problem as the old one is changed.
I have seen a solution for this mentiond elsewhere, it was to use some of the life particles as elements to change as they aren't usealy used alongside with other elements.
using other rarely used elements would work to.

SkinnySatinTiger

_kinloch_

@lillepallt (View Post)

The in game GUI was partly the Idea but the other part was the poibility of having a folder in the folder where TPT goes where you could make custom elements on a text document and put them in there.A bit like autorun.lua but adds new elements not changes existing ones.
An ingame GUI for element creation/modifying was the first pat of my idea.
sorry if I didnt explain clearly.

@Ben-Siraphob (View Post)
I know.
I am hopeing to learn c/c++ because It is a major programing language(as far as I know) and I am hopeing to learn Lua because it is used in some games(like TPT and many other games) as a programing language.

lillepallt

@kinloch please correct me everybody a countless of times but I recall something on the maximum number of elements is 255 and we are quite close to that limit.. Just recalling memories from posts.. Please don't trust this until we got a safe source of developer proving this and adding statements to it.. Just rumorin'

_kinloch_

@lillepallt (View Post)

I have heard something about that 255 limit.

Possibly my idea wouldn't work because of that.

however I can't tell without looking at the source code of TPT(and understanding it!!).

boxmein

@_kinloch_ (View Post)

@lillepallt (View Post)

In powder.c (lines 29-37) there are five definitions of arrays that are the main arrays of the game's pixel map:

unsigned char bmap[YRES/CELL][XRES/CELL];
unsigned char emap[YRES/CELL][XRES/CELL];
unsigned char cb_bmap[YRES/CELL][XRES/CELL];
unsigned char cb_emap[YRES/CELL][XRES/CELL];
unsigned pmap[YRES][XRES];

I can see that the first four are character arrays(Their limit is 0-255 and they're stored as ASCII characters), but what about pmap? It doesn't have a type value! I might have heard that when you leave out the datatype when you use unsigned/signed, you get a default of int, that should mean that pmap is compatible with from 65 536 up to 4 294 967 294 elements. Though that takes us to physical limits of the computer, meaning the computer will have to remember (from powder.h "#define XRES 612 #define YRES 384") 235 008 pieces of data with 65 536 up to 4 294 967 294 values each.

jacksonmj

@boxmein (View Post)
Look at how pmap is used. The particle type is stored using 8 bits of it - so a limit of 255 elements.
There might be some wall numbers in the way as well, starting at 222 (in some places, wall numbers are stored in the same variable as element IDs), so the limit is probably 221 elements.

There are currently 160 elements.

_kinloch_

@jacksonmj (View Post)

I am learning c++ so soon I will look at the code and will hopefully understand then how it works a bit more.

Is powder toy being ported to c++?

Dawgie

Well if you want custom elements use this script idk who it belongs to but kudos to them you know who you are
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
typens={'DUST','WATR','OIL','FIRE','STNE','LAVA','GUN','NITR','CLNE','GAS','C-4','GOO','ICE','METL','SPRK','SNOW','WOOD','NEUT','PLUT','PLNT','ACID','VOID','WTRV','CNCT','DSTW','SALT','SLTW','DMND','BMTL','BRMT','PHOT','URAN','WAX','MWAX','PSCN','NSCN','LN2','INSL','VACU','VENT','RBDM','LRBD','NTCT','SAND','GLAS','PTCT','BGLA','THDR','PLSM','ETRD','NICE','NBLE','BTRY','LCRY','STKM','SWCH','SMKE','DESL','COAL','LO2','O2','INWR','YEST','DYST','THRM','GLOW','BRCK','CFLM','FIRW','FUSE','FSEP','AMTR','BCOL','PCLN','HSWC','IRON','MORT','LIFE','DLAY','CO2','DRIC','CBNW','STOR','PVOD','CONV','CAUS','LIGH','TESC','DEST','SPNG','RIME','FOG','BCLN','LOVE','DEUT','WARP','PUMP','FWRK','PIPE','FRZZ','PRZW','GRAV','BIZR','BIZG','BIZS','INST','ISOZ','ISZS','PRTI','PRTO','PSTE','PSTS','ANAR','VINE','INVS','EQVE','SPW2','SPWN','SHLD','SHD2','SHD3','SHD4','LOLZ','WIFI','FILT','ARAY','BRAY','STK2','BOMB','C-5','SING','QRTZ','PQRT','EMP','BREL','','','','','','BOYL','','','','','','','H2','SOAP','BHOL','WHOL','MERC','PBCN','GPMP','CLST','WIRE','GBMB','FIGH','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','','Conductor wall','E-wall','Reg wall','Streamline','Sign','Fan','Liq-only wall','Absorber','Erase walls','Wall','Air-only wall','Solid-only wall','Yellow wall','E-Hole','AIR','HEAT','COOL','VAC','Gas-only wall','WIND','Gravity wall','PGRV','NGRV','Energy wall','PROP'}
typens[0]='NONE'
function findelem(a)
if (typens[a]=='')or(typens[a]==nil) then
return a
else
return typens[a]..'('..a..')'
end
end
psel=0
ctype=0
ctypet=0
life=0
lifet=0
tmp=0
tpmt=0
tmp2=0
tmp2t=0
temp=273.15+22
tempt=0
parts={}
function replace()
pp={}
local i=0
while parts[i]~=nil do
pp[i]=parts[i]
i=i+1
end
parts={}
i=0
tpt.start_getPartIndex()
while tpt.next_getPartIndex() do
if tpt.get_property('type',tpt.getPartIndex())==psel then
   parts[i]=tpt.getPartIndex()
   i=i+1
end
end
i=0
while parts[i]~=nil do
if pp[i]==nil then
   if ctypet==1 then tpt.set_property('ctype',ctype,parts[i]) end
   if lifet==1 then tpt.set_property('life',life,parts[i]) end
   if tempt==1 then tpt.set_property('temp',temp,parts[i]) end
   if tmpt==1 then tpt.set_property('tmp',tmp,parts[i]) end
   if tmp2t==1 then tpt.set_property('tmp2',tmp2,parts[i]) end
end
i=i+1
end
end

function step()
if psel~=tpt.selectedl then
psel=tpt.selectedl
local i=0
parts={}
tpt.start_getPartIndex()
while tpt.next_getPartIndex() do
if tpt.get_property('type',tpt.getPartIndex())==psel then
   parts[i]=tpt.getPartIndex()
   i=i+1
end
end
ctype=0
ctypet=0
life=0
lifet=0
tmp=0
tpmt=0
tmp2=0
tmp2t=0
temp=273.15+22
tempt=0
if psel==149 then
tmp=-1
tmp2=-1
end
if psel==21 or psel==86 then life=75 end
if psel==95 then life=10 end
if psel==152 then tmp=10 end
if psel==131 or psel==4 or psel==49 or psel==68 or psel==18 or psel==6 then life='~' end
if psel==132 or psel==133 or psel==155 then tmp='~' end
if psel==71 then life=50 end
if psel==59 then
life=110
tmp=50
end
if psel==101 then life=100 end
if psel==99 then life=60 end
if psel==73 then life=110 end
if psel==13 then ctype=2 end
if psel==31 then life=680 end
if psel==87 or psel==68 then temp=0 end
if psel==97 or psel==154 then temp=273.15 end
if psel==79 then temp=273.15+4 end
if psel==48 then temp=273.15+9000 end
if psel==42 then temp=273.15+67 end
if psel==4 then temp=273.15+422 end
if psel==57 then temp=273.15+342 end
if psel==49 then temp=9999 end
if psel==23 then temp=273.15+122 end
if psel==2 or psel==25 or psel==82 or psel==111 or psel==149 or psel==95 then temp=273.15+20 end
if psel==6 then temp=273.15+1522 end
if psel==34 then temp=273.15+50 end
if psel==37 then temp=273.15-203 end
if psel==60 then temp=273.15-193 end
if psel==66 then temp=273.15+42 end
if psel==16 then temp=273.15-8 end
if psel==100 then temp=273.15-183 end
if psel==13 then temp=273.15-28 end
if psel==51 then temp=273.15-238 end
if psel==81 then temp=273.15-100 end
if psel==31 then temp=273.15+922 end
end
drawgui()
replace()
end

function drawgui()
if al>0 then
tpt.drawrect(4,361,603,12,255,255,255,al)
tpt.fillrect(4,361,603,12,0,1,1,al)
tpt.drawtext(6,363,'TYPE:'..findelem(tpt.selectedl),0,255,255,al)
if tpt.selectedl<159 then
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>128 and tpt.mousex<257 then tpt.fillrect(128,361,129,12,255,0,255,al/2) end
tpt.drawtext(130,363,'CTYPE:'..findelem(ctype),255,0,0,al)
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>256 and tpt.mousex<313 then tpt.fillrect(256,361,57,12,255,0,255,al/2) end
tpt.drawtext(258,363,'LIFE:'..life,0,255,255,al)
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>313 and tpt.mousex<393 then tpt.fillrect(313,361,80,12,255,0,255,al/2) end
if cels==0 then
tpt.drawtext(314,363,'TEMP:'..temp..'K',255,0,0,al)
else
tpt.drawtext(314,363,'TEMP:'..(temp-273.15)..'C',255,0,0,al)
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>393 and tpt.mousex<447 then tpt.fillrect(393,361,54,12,255,0,255,al/2) end
tpt.drawtext(394,363,'TMP:'..tmp,0,255,255,al)
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>447 and tpt.mousex<605 then tpt.fillrect(447,361,160,12,255,0,255,al/2) end
tpt.drawtext(448,363,'TMP2:'..tmp2,255,0,0,al)
end
end
end

function click(x,y,btn,ev)
if ev==2 and btn==1 and tpt.selectedl<159 then
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>128 and tpt.mousex<257 then
   a=tpt.input('','Enter new CTYPE:',ctype)
   s=tonumber(a)
   if s~=nil then
    ctype=s
    ctypet=1
   else
    local i=0
    for i=0,158 do
     if string.upper(typens[i])==string.upper(a) then
      ctype=i
      ctypet=1
      break
     end
    end
   end
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>256 and tpt.mousex<313 then
s=tonumber(tpt.input('','Enter new LIFE:',life))
if s~=nil then
life=s
lifet=1
end
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>313 and tpt.mousex<393 then
s=tonumber(tpt.input('','Enter new TEMP:',temp))
if s~=nil then
temp=s
tempt=1
end
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>393 and tpt.mousex<447 then
s=tonumber(tpt.input('','Enter new TMP:',tmp))
if s~=nil then
tmp=s
tmpt=1
end
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>447 and tpt.mousex<605 then
s=tonumber(tpt.input('','Enter new TMP2:',tmp2))
if s~=nil then
tmp2=s
tmp2t=1
end
end
end
if tpt.mousey>361 and tpt.mousey<372 and tpt.mousex>128 and tpt.mousex<605 then return false end
end
tgl=1
function key(a,b,c,d)
if (b==308 or b==304)and c==257 and event==1 then
ctypet=1
ctype=tpt.get_property('ctype',tpt.mousex,tpt.mousey)
lifet=1
life=tpt.get_property('ctype',tpt.mousex,tpt.mousey)
tempt=1
temp=tpt.get_property('ctype',tpt.mousex,tpt.mousey)
tmpt=1
tmp=tpt.get_property('ctype',tpt.mousex,tpt.mousey)
tmp2t=1
tmp2=tpt.get_property('ctype',tpt.mousex,tpt.mousey)
end
if a=='e' and d==2 then
tgl=1-tgl
if tgl==0 then
   tpt.unregister_step(step)
   tpt.unregister_mouseclick(click)
else
   tpt.register_step(step)
   tpt.register_mouseclick(click)
end
end
end
tpt.register_step(step)
tpt.register_mouseclick(click)
tpt.register_keypress(key)
al=200
cels=1

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