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Lua scripting questions: Inputs and video #122833 10/28/23 11:44 AM
Joined: May 2009 Posts: 2,214 Likes: 382 J Just Desserts OP Very Senior Member
OP Just Desserts Very Senior Member J Joined: May 2009 Posts: 2,214 Likes: 382	This question is primarily directed at Golden Child, but I'm hoping Vas might be able to provide some insight as well. This is in regards to my thread here: https://old.reddit.com/r/MAME/comments/17i3er5/input_question_for_anyone_who_uses_the_nes_driver/ I know that there are video overlays that one can use with OBS to record the state of a controller at any given moment, what I want is to re-create such a thing within MAME itself in order to compare the two. All I really want is for there to be well-positioned boxes for: D-pad L/R/U/D, and Buttons 1-4. If it's possible to make a Lua script to read the current inputs that MAME is registering, and either fill or not-fill a surrounding with a highlight whenever that button is considered to be pressed, that would be a huge help, because if it's overlaid on the window, then I'll capture it while recording a given session. I can then see where the disagreement originates: If MAME's idea of "which button is pressed" differs from the controller overlay, then that could point the finger one way. If not, then it makes it clearer that the MAME driver for the NES itself is flawed in how it handles inputs.

Re: Lua scripting questions: Inputs and video Just Desserts #122834 10/28/23 12:50 PM
Joined: Feb 2004 Posts: 2,597 Likes: 300 Sydney, Australia Vas Crabb Very Senior Member
Vas Crabb Very Senior Member Joined: Feb 2004 Posts: 2,597 Likes: 300 Sydney, Australia	If you just want to display inputs as seen by the emulated system, you’re better off just making a layout file. Use the inputs to set the state of elements, and make them draw a different colour box depending on the state. You can do it with Lua script, but it’s a lot more work. If you ask over at the MAME Artwork forum, most of the more experienced guys there have mastered doing this for simple cases, so you could probably get more detailed examples from them. Also it’s kind of hap’s thing.

Re: Lua scripting questions: Inputs and video Just Desserts #122835 10/28/23 06:30 PM
Joined: Feb 2014 Posts: 1,100 Likes: 172 G Golden Child Very Senior Member
Golden Child Very Senior Member G Joined: Feb 2014 Posts: 1,100 Likes: 172	Hi, JD, sure I can whip something up, gimme an hour or two, gotta work out how to read an nes ioport in a lua script print(manager.machine.ioport.ports[":ctrl1:joypad:JOYPAD"]:read()) I'll also try Vas's suggestion to make a simple layout. (woo hoo crossed the 1000 post mark) Last edited by Golden Child; 10/28/23 06:31 PM.
	1 member likes this: robcfg

Re: Lua scripting questions: Inputs and video

Just Desserts #122836 10/28/23 08:27 PM

Joined: Feb 2014

Posts: 1,100

Likes: 172

Golden Child Online Content

Very Senior Member

Golden Child

Very Senior Member

Joined: Feb 2014

Posts: 1,100

Likes: 172

Ok, here's a little script that will show the buttons for the left controller:

Code

function iifnot0(a,b,c) if a~=0 then return b else return c end end
function drawoverlay()
dpadx,dpady = 50, 170 padx,pady = 30, 30 cposx,cposy = 120, 170 rposx, rposy = 190,170
buttons = {up = 16, down = 32, left = 64, right = 128, a=1, b=2, select=4, start=8} 
buttonpos = {up = {dpadx, dpady-pady},  down = {dpadx,dpady + pady}, right = {dpadx+padx, dpady}, left={dpadx-padx, dpady}, select={cposx, cposy}, start={cposx+padx,cposy}, b={rposx,rposy},a={rposx+padx,rposy}}
for i,j in pairs(buttons) do 
 manager.machine.screens[":screen"]:draw_box(buttonpos[i][1],buttonpos[i][2],buttonpos[i][1]+20,buttonpos[i][2]+20,
 0x88ffffff, iifnot0(manager.machine.ioport.ports[":ctrl1:joypad:JOYPAD"]:read() & buttons[i], 0x88ff0000, 0x88000000)) 
 manager.machine.screens[":screen"]:draw_text(buttonpos[i][1]+2,buttonpos[i][2]+4,i)
end
end
emu.register_frame_done(drawoverlay)

You can paste it in on the lua console or save it to a file and dofile("myfile.lua")

Re: Lua scripting questions: Inputs and video Just Desserts #122837 10/28/23 09:25 PM
Joined: Feb 2014 Posts: 1,100 Likes: 172 G Golden Child Very Senior Member
Golden Child Very Senior Member G Joined: Feb 2014 Posts: 1,100 Likes: 172	Here's a layout file for nes, put it in a file called artwork/nes1/nes1.lay and then use "-override_artwork nes1" Code <mamelayout version="2"> <element name="button"> <rect state="1"><color alpha="0.5" red="1.0" green="0" blue="0"/></rect> <rect state="0"><color alpha="0.5" red="0" green="0" blue="0"/></rect> </element> <view name="Controllers Overlay"> <screen index="0"> <bounds x="0" y="0" width="256" height="240" /> </screen> <!-- a --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x1"> <bounds x="220" y="170" width="20" height="20"/> </element> <!-- b --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x2"> <bounds x="190" y="170" width="20" height="20"/> </element> <!-- select --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x4"> <bounds x="120" y="170" width="20" height="20"/> </element> <!-- start --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x8"> <bounds x="150" y="170" width="20" height="20"/> </element> <!-- up --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x10"> <bounds x="50" y="140" width="20" height="20"/> </element> <!-- down --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x20"> <bounds x="50" y="200" width="20" height="20"/> </element> <!-- left --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x40"> <bounds x="20" y="170" width="20" height="20"/> </element> <!-- right --> <element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x80"> <bounds x="80" y="170" width="20" height="20"/> </element> </view> </mamelayout>
	3 members like this: ICEknight, robcfg, R. Belmont

Re: Lua scripting questions: Inputs and video Just Desserts #122845 10/31/23 01:20 PM
Joined: Feb 2014 Posts: 1,100 Likes: 172 G Golden Child Very Senior Member
Golden Child Very Senior Member G Joined: Feb 2014 Posts: 1,100 Likes: 172	For fun, I thought I'd add the ability to move the overlay up and down with keypad 2 and 8, adjust the alpha with keypad 4 and 6, and turn the overlay off and on with [ and ] Code function iifnot0(a,b,c) if a~=0 then return b else return c end end displayoverlay=true originx,originy=50,170 alphavalue=0.5 function drawoverlay() dpadx,dpady = 50,originy padx,pady = 30,30 cposx,cposy = 120,originy rposx, rposy = 190,originy buttons = {up = 16, down = 32, left = 64, right = 128, a=1, b=2, select=4, start=8} buttonpos = {up = {dpadx, dpady-pady}, down = {dpadx,dpady + pady}, right = {dpadx+padx, dpady}, left={dpadx-padx, dpady}, select={cposx, cposy}, start={cposx+padx,cposy}, b={rposx,rposy},a={rposx+padx,rposy}} if displayoverlay==true then for i,j in pairs(buttons) do manager.machine.screens[":screen"]:draw_box(buttonpos[i][1],buttonpos[i][2],buttonpos[i][1]+20,buttonpos[i][2]+20, 0x00ffffff \| math.floor(alphavalue255)<<24, iifnot0(manager.machine.ioport.ports[":ctrl1:joypad:JOYPAD"]:read() & buttons[i], 0x00ff0000 \| math.floor(alphavalue255)<<24, 0x00000000 \| math.floor(alphavalue255)<<24)) manager.machine.screens[":screen"]:draw_text(buttonpos[i][1]+2, buttonpos[i][2]+4, i, 0xffffff \| math.floor(alphavalue255)<<24) end end input=manager.machine.input if input:code_pressed(input:code_from_token("KEYCODE_OPENBRACE")) then displayoverlay = false end if input:code_pressed(input:code_from_token("KEYCODE_CLOSEBRACE")) then displayoverlay = true end if input:code_pressed(input:code_from_token("KEYCODE_8PAD")) then originy = originy - 1 end if input:code_pressed(input:code_from_token("KEYCODE_2PAD")) then originy = originy + 1 end if input:code_pressed(input:code_from_token("KEYCODE_4PAD")) then alphavalue = alphavalue-0.01 if alphavalue<0 then alphavalue=0 end end if input:code_pressed(input:code_from_token("KEYCODE_6PAD")) then alphavalue = alphavalue+0.01 if alphavalue>1.0 then alphavalue=1.0 end end end emu.register_frame_done(drawoverlay)
	1 member likes this: RomKnight

Re: Lua scripting questions: Inputs and video Just Desserts #122846 10/31/23 05:44 PM
Joined: May 2009 Posts: 2,214 Likes: 382 J Just Desserts OP Very Senior Member
OP Just Desserts Very Senior Member J Joined: May 2009 Posts: 2,214 Likes: 382	By the way, I do apologize for not having had a chance to dig into this. My weekend was topsy-turvy schedule-wise, and this week I just don't have much spare time. I'll get onto this this coming weekend.

Re: Lua scripting questions: Inputs and video

Just Desserts #122848 11/01/23 09:21 AM

Joined: Feb 2014

Posts: 1,100

Likes: 172

Golden Child Online Content

Very Senior Member

Golden Child

Very Senior Member

Joined: Feb 2014

Posts: 1,100

Likes: 172

If it helps, I added a framecounter display on the layout.

Interestingly, it seems to use up all the textures if you set the maxstate of the counter to something like 999999.
If I omit the maxstate, it will "wrap" the counter at 2048.

FRAME:2045
Searching font Liberation Sans in -. path/s
Matching font: 0x55578a018070
FRAME:2046
Searching font Liberation Sans in -. path/s
Matching font: 0x55578a957cf0
FRAME:2047
Searching font Liberation Sans in -. path/s
Matching font: 0x55578a983500
FRAME:2048
FRAME:2049
FRAME:2050

and if I set the maxstate to "99999" then it will count up to 4523 and fatal error
FRAME:4522
Searching font Liberation Sans in -. path/s
Matching font: 0x55c577436580
FRAME:4523
Searching font Liberation Sans in -. path/s
Matching font: 0x55c5774f96f0
Ignoring MAME exception: renderer_ogl::texture_create: texture hash exhausted ...
Fatal error: renderer_ogl::texture_create: texture hash exhausted ...
Average speed: 99.42% (74 seconds)

Code


<mamelayout version="2">
	<element name="button">
		<rect state="1"><color alpha="0.5" red="1.0" green="0.0" blue="0.0"/></rect>
		<rect state="0"><color alpha="0.5" red="0.0" green="0.0" blue="0.0"/></rect>
	</element>


<group name="controller">

<!-- a -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x1">
		<bounds x="220" y="170" width="20" height="20"/>
		</element>
<!-- b -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x2">
		<bounds x="190" y="170" width="20" height="20"/>
		</element>


<!-- select -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x4">
		<bounds x="120" y="170" width="20" height="20"/>
		</element>

<!-- start -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x8">
		<bounds x="150" y="170" width="20" height="20"/>
		</element>

<!-- up -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x10">
		<bounds x="50" y="140" width="20" height="20"/>
		</element>
<!-- down -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x20">
		<bounds x="50" y="200" width="20" height="20"/>
		</element>

<!-- left -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x40">
		<bounds x="20" y="170" width="20" height="20"/>
		</element>

<!-- right -->
		<element ref="button" inputtag=":ctrl1:joypad:JOYPAD" inputmask="0x80">
		<bounds x="80" y="170" width="20" height="20"/>
		</element>

</group>

	<element name="framecount"><simplecounter align="2" /></element>

	<view name="Controllers Overlay">
		<screen index="0">
			<bounds x="0" y="0" width="256" height="240" />
		</screen>
		<group ref="controller">
		</group>
		<element ref="framecount" id="framecount">
	  		<bounds x="0" y="0" width="50" height="10"/>
		</element>
	</view>
	
	
	
	
	
	
	
	
<script><![CDATA[

-- file is the layout file object

print("LAYOUT LOADED  file.device.name = "..file.device.name)
print("LAYOUT LOADED  file.device.shortname = "..file.device.shortname)
print("LAYOUT LOADED  file.device.tag = = "..file.device.tag)


file:set_resolve_tags_callback(
	function ()

file.views["Controllers Overlay"].items["framecount"]:set_element_state_callback(
		function () 
		--print("FRAME:"..machine.screens[":screen"]:frame_number())
		return machine.screens[":screen"]:frame_number()
		end)

end)

]]></script>
	
	

</mamelayout>

Last edited by Golden Child; 11/01/23 09:27 AM.

Re: Lua scripting questions: Inputs and video

Just Desserts #122849 11/01/23 09:50 AM

Joined: Feb 2014

Posts: 1,100

Likes: 172

Golden Child Online Content

Very Senior Member

Golden Child

Very Senior Member

Joined: Feb 2014

Posts: 1,100

Likes: 172

And a framenumber on the lua script:

Code

function iifnot0(a,b,c) if a~=0 then return b else return c end end

displayoverlay=true
originx,originy=50,170
alphavalue=0.5

function drawoverlay()
dpadx,dpady = 50,originy padx,pady = 30,30 cposx,cposy = 120,originy rposx, rposy = 190,originy
buttons = {up = 16, down = 32, left = 64, right = 128, a=1, b=2, select=4, start=8} 
buttonpos = {up = {dpadx, dpady-pady},  down = {dpadx,dpady + pady}, right = {dpadx+padx, dpady}, left={dpadx-padx, dpady}, select={cposx, cposy}, start={cposx+padx,cposy}, b={rposx,rposy},a={rposx+padx,rposy}}
if displayoverlay==true then
for i,j in pairs(buttons) do 
 manager.machine.screens[":screen"]:draw_box(buttonpos[i][1],buttonpos[i][2],buttonpos[i][1]+20,buttonpos[i][2]+20,
   0x00ffffff | math.floor(alphavalue*255)<<24, 
   iifnot0(manager.machine.ioport.ports[":ctrl1:joypad:JOYPAD"]:read() & buttons[i], 
     0x00ff0000 | math.floor(alphavalue*255)<<24, 
     0x00000000 | math.floor(alphavalue*255)<<24))
 manager.machine.screens[":screen"]:draw_text(buttonpos[i][1]+2, buttonpos[i][2]+4, i,
     0xffffff | math.floor(alphavalue*255)<<24)
end
framenum = manager.machine.screens[":screen"]:frame_number()
 manager.machine.screens[":screen"]:draw_text(5,5,"Frame Number: "..framenum,
     0xffffff | math.floor(alphavalue*255)<<24)
 manager.machine.screens[":screen"]:draw_text(5,5,"Frame Number: "..framenum.."   "..string.rep(" ",framenum % 10 * 2)..framenum % 10,
     0xffffff | math.floor(alphavalue*255)<<24)
end
input=manager.machine.input
if input:code_pressed(input:code_from_token("KEYCODE_OPENBRACE")) then displayoverlay = false end
if input:code_pressed(input:code_from_token("KEYCODE_CLOSEBRACE")) then displayoverlay = true end
if input:code_pressed(input:code_from_token("KEYCODE_8PAD")) then originy = originy - 1 end
if input:code_pressed(input:code_from_token("KEYCODE_2PAD")) then originy = originy + 1 end
if input:code_pressed(input:code_from_token("KEYCODE_4PAD")) then alphavalue = alphavalue-0.01 if alphavalue<0 then alphavalue=0 end end
if input:code_pressed(input:code_from_token("KEYCODE_6PAD")) then alphavalue = alphavalue+0.01 if alphavalue>1.0 then alphavalue=1.0 end end
end

emu.register_frame_done(drawoverlay)

Re: Lua scripting questions: Inputs and video Just Desserts #122853 11/01/23 05:01 PM
Joined: Feb 2014 Posts: 1,100 Likes: 172 G Golden Child Very Senior Member
Golden Child Very Senior Member G Joined: Feb 2014 Posts: 1,100 Likes: 172	layout version: Last edited by Golden Child; 11/01/23 05:06 PM.
	1 member likes this: ICEknight

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