My first attempt at Lua

Sapheros · Jun 8, 2014

Okay, What I'm trying to do is create a run button. The run button would be good for characters like mario or Sonic Lost World Sonic... And the thin is, I can BARELY lua but I do have a code I just made up... I don't think it works but i'm trying to find out what needs to be done.

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    if (player.cmd.buttons & BT_CUSTOM1)
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.pflags & PF_RUNNING)

My knowledge of lua is so low...

wolfs · Jun 8, 2014

PF_RUNNING is not a valid player flag. Look here for information on what player flags are valid.

Sapheros · Jun 8, 2014

How does this look so far?

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    if (player.cmd.buttons & BT_CUSTOM1)
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.pflags & PA_WALK)
            and if not (player.cmd.buttons & BT_CUSTOM1)
            //this should tell us if the player is walking and is not pressing the run button
            
            if button is pressed (BT_CUSTOM3)
            player.defaultspeed = FRACUNIT
            player.increasespeed = FRACUNIT/2
            //I believe what is supposed to happen here is that the player increases their speed past their running speed
            
            
            end
        end    
    end        
end)

wolfs · Jun 8, 2014

Why on earth are you even trying to use pflags to check for an animation? PA_WALK is not a flag, it's an animation, and must be checked using player.panim instead of player.pflags.

Sapheros · Jun 8, 2014

Ok, that's fixed, but I'm having trouble moving on past the action i'm trying to do...

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    if (player.cmd.buttons & BT_CUSTOM1)
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.panim & PA_WALK)
            and if not (player.cmd.buttons & BT_CUSTOM1)
            (action == null?)
            //this should tell us if the player is walking and is not pressing the run button
            
            if button is pressed (BT_CUSTOM1)
            player.defaultspeed = FRACUNIT
            player.increasespeed = FRACUNIT/2
            (player.panim & PA_RUN) = True
            //I believe what is supposed to happen here is that the player increases their speed past their running speed
            
            
            end
        end    
    end        
end)

wolfs · Jun 8, 2014

https://wiki.srb2.org/wiki/User:Monster_Iestyn/Lua_basics

This should help. Read it thoroughly and look at other scripts as well.

Monster Iestyn · Jun 8, 2014

https://wiki.srb2.org/wiki/User:Monster_Iestyn/Userdata_structures#player_t

This may be handy as well too.

Sapheros · Jun 9, 2014

I haven't executed this yet, but I still want to know what I did wrong:

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.panim & PA_WALK)
            and if not (player.cmd.buttons & BT_CUSTOM1)
            (player.panim & PA_RUN) == nil
            //this should tell us if the player is walking and is not pressing the run button
            
            if button is pressed (BT_CUSTOM1)
            player.normalspeed = FRACUNIT
            player.normalspeed = FRACUNIT*2
            //I believe what is supposed to happen here is that the player increases their speed past their running speed
            end
        end    
    end        
end)

I'm actually starting to learn :D

HellHawkX · Jun 10, 2014

Duon the Adventurer said:
I haven't executed this yet, but I still want to know what I did wrong:

Code:

if button is pressed (BT_CUSTOM1) player.normalspeed = FRACUNIT player.normalspeed = FRACUNIT*2 //I believe what is supposed to happen here is that the player increases their speed past their running speed end end end end)

I'm actually starting to learn :D

player.normalspeed does not need fracunits, just use numbers. Even then, all that will do is increase the player's maximum speed, it will not put them in their running animations, and neither will it put them in motion.

Sapheros · Jun 10, 2014

HellHawkX said:
player.normalspeed does not need fracunits, just use numbers. Even then, all that will do is increase the player's maximum speed, it will not put them in their running animations, and neither will it put them in motion.

The running speed of the character is only 5 units from the normal speed, so even by getting speed shoes the character will go in the running animations. And thanks, for the advice.

Fix-up (I guess)

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.panim & PA_WALK)
            and if not (player.cmd.buttons & BT_CUSTOM1)
            (player.panim & PA_RUN) == nil
            //this should tell us if the player is walking and is not pressing the run button
            
            if player.cmd.button is pressed (BT_CUSTOM1) is pressed
            player.normalspeed = 15
            //I believe what is supposed to happen here is that the player increases their speed past their running speed
            
            if (player.cmd.button & BT_CUSTOM1) is not pressed
            player.noramlspeed = 10
            //I believe what is supposed to happen here is that if the button is not pressed while the running action is going on, it will revert back to the normal speed it has
            end
        end    
    end        
end)

HellHawkX · Jun 10, 2014

Duon the Adventurer said:

The running speed of the character is only 5 units from the normal speed, so even by getting speed shoes the character will go in the running animations. And thanks, for the advice.

Fix-up (I guess)

Code:

addHook("ThinkFrame" do
    for player in player.iterate
    if player.mo and player.mo.skin = "mario"
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
        
            if (player.panim & PA_WALK)
            and if not (player.cmd.buttons & BT_CUSTOM1)
            (player.panim & PA_RUN) == nil
            //this should tell us if the player is walking and is not pressing the run button
            
            if player.cmd.button is pressed (BT_CUSTOM1) is pressed
            player.normalspeed = 15
            //I believe what is supposed to happen here is that the player increases their speed past their running speed
            
            if (player.cmd.button & BT_CUSTOM1) is not pressed
            player.noramlspeed = 10
            //I believe what is supposed to happen here is that if the button is not pressed while the running action is going on, it will revert back to the normal speed it has
            end
        end    
    end        
end)

Sorry, I had a brain fart, you were actually correct, the speed DOES need fracunit. However, the rest of your code is still wrong, in fact, your entire code is wrong, the best "fix" would be to start over, I'll point out some mistakes that I saw.

Code:

for player in player.iterate
    if player.mo and player.mo.skin = "mario"

It's playerS.iterate, the skin check needs to be in parentheses, also when checking for things, you use "==" not "="

Code:

(player.panim & PA_RUN) == nil

I can only assume that you were trying to "cancel" running animations with this, however, I doubt that would work, even if it did, you're supposed to use "=" when changing things, not "==" (unless you MEANT to use "==", in which case, I have no idea what you were trying to achieve).

Code:

if player.cmd.button is pressed (BT_CUSTOM1) is pressed

Code:

if (player.cmd.button & BT_CUSTOM1) is not pressed

"Is pressed" and "Is not pressed" doesn't do anything, they aren't a thing, (player.cmd.button & BT_CUSTOM1) checks if you are pressing the button, if you want to execute an action when the button is NOT pressed, all you have to do is make the action that happens when it IS pressed, and then use "else" to say what happens when it is not.

Here's a new and working code. The only problem with it is that it slows down the other characters as well, since I didn't tell it what to do if the character is not Sonic.

Code:

addHook("ThinkFrame", do
    for player in players.iterate
    if (player.mo and player.mo.skin == "sonic")
	and (player.panim & PA_WALK)
	and (player.cmd.buttons & BT_CUSTOM1)
    and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
				player.normalspeed = 36*FRACUNIT
				else
            player.normalspeed = 20*FRACUNIT
        end    
    end        
end)

Sapheros · Jun 12, 2014

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if (player.mo and player.mo.skin == "mario")
            and (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                player.normalspeed = 30*FRACUNIT
                else
            player.normalspeed = 15*FRACUNIT
            end
        elseif not (player.mo.skin == "mario")
            player.normalspeed = FRACUNIT
            end
        end 
    end        
end)

Might not be the best solution... but hey, i tried... that character ability tutorial on the wiki wasn't much help...

wolfs · Jun 12, 2014

Change the "elseif" to an "else", remove the check for the player's skin not being mario, and replace the normalspeed set after that with "return".

PS: A speed of FRACUNIT is insanely slow, just so you know.

Sapheros · Jun 12, 2014

Wolfy said:
Change the "elseif" to an "else", remove the check for the player's skin not being mario, and replace the normalspeed set after that with "return".

PS: A speed of FRACUNIT is insanely slow, just so you know.

If that's the case, can't i just use a normal UNIT? And thanks again.

Monster Iestyn · Jun 12, 2014

The FRACUNIT is SRB2's standard measurement unit, just so you know. It is the normal unit.

Sapheros · Jun 12, 2014

Well it looks like it works... but an error keeps coming up everytime i fix it...

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if (player.mo and player.mo.skin == "mario")
            and (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                player.normalspeed = 36*FRACUNIT
                else
            player.normalspeed = 15*FRACUNIT
        end
    end
end)
                else  
                return
            end
        end 
    end        
end

Loading Lua script from mario.wad|LUA_MARI
Pardon me while I initialize the Lua scripting interface...
WARNING: mario.wad|LUA_MARI:99: '<eof>' expected near 'else'

Terra · Jun 12, 2014

Duon the Adventurer said:

Well it looks like it works... but an error keeps coming up everytime i fix it...

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if (player.mo and player.mo.skin == "mario")
            and (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                player.normalspeed = 36*FRACUNIT
                else
            player.normalspeed = 15*FRACUNIT
        end
    end
end)
                else  
                return
            end
        end 
    end        
end

The bracket should only be on the last end on the whole script, not on any of the other ends.

Sapheros · Jun 12, 2014

Terra said:
The bracket should only be on the last end on the whole script.

Yeah, but the game didn't respond to that, but when i fixed it like that...

WARNING: mario.wad|LUA_MARI:99: ')' expected (to close '(' at line 82) near 'else'

Terra · Jun 12, 2014

Duon the Adventurer said:
Yeah, but the game didn't respond to that, but when i fixed it like that...

I don't know, then. This script looks OK... Maybe you need to move that else up before the ends and move that last bit that comes before the first end to the right a slight bit, then move all the other stuff below it to the right a slight bit and add a new end for them...? I really don't know...

Sapheros · Jun 13, 2014

I don't think my script likes the word "else" by itself...

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if (player.mo and player.mo.skin == "mario")
            and (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                        player.normalspeed = 30*FRACUNIT
                        else
                    player.normalspeed = 15*FRACUNIT
                    else
                        return
                        end
                    end
                end
            end
        end 
    end
end)

WARNING: mario.wad|LUA_MARI:96: 'end' expected (to close 'if' at line 84) near 'else'

---------- Post added at 11:12 PM ---------- Previous post was at 10:31 PM ----------

New fix, similar issue...

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if not (player.mo and player.mo.skin == "mario")
            continue
        end
            if (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                        player.normalspeed = 30*FRACUNIT
                        else
                    player.normalspeed = 15*FRACUNIT
                    end
                end
            end
        end)

WARNING: mario.wad|LUA_MARI:101: ')' expected (to close '(' at line 82) near 'end'

EDIT: The code is kinda the same... but still the same error...

Code:

addHook("ThinkFrame", do
    for player in players.iterate
        if not (player.mo and player.mo.skin == "mario")
            continue
        end
            if (player.panim & PA_WALK)
            and (player.cmd.buttons & BT_USE)
                and not (player.pflags & PF_NIGHTSMODE)
                and not (player.pflags & PF_ROPEHANG)
                and not (player.pflags & PF_MACESPIN)
                and not (player.pflags & PF_TAGGED)
                and not (player.pflags & PF_STASIS)
                and not (player.mo.tracer and player.mo.tracer.type == MT_TUBEWAYPOINT)
                        player.normalspeed = 30*FRACUNIT
                        else
                    player.normalspeed = 15*FRACUNIT
                    end
                end
            end
        end
    end
end)

WARNING: mario.wad|LUA_MARI:101: ')' expected (to close '(' at line 82) near 'end'

My first attempt at Lua

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