Omg!

ID:269038
 
Jan 30 2005, 3:05 pm
Why wont it work! Here is the runtime error---
runtime error: Cannot read null.density
proc name: Gravity (/proc/Gravity)
usr: Jonathan E (/mob/Player)
src: null
call stack:
Gravity(Jonathan E (/mob/Player))
Gravity(Jonathan E (/mob/Player))
Jonathan E (/client): East()

and the gravity proc is
mob
    var
        inair
proc
    Gravity(var/mob/per)
        if(per.dir == EAST)
            if(per.inair == 1)
                var/turf/check = locate(per.x,per.y-1,per.z)
                if(check.density == 1)
                    per.inair = 0
                    return
                else
                    per.loc=locate(per.x,per.y-1,per.z)
                    sleep(2)
                    Gravity(per)
            else
                return 0
        if(per.dir == WEST)
            if(per.inair == 1)
                var/turf/check = locate(per.x,per.y-1,per.z)
                if(check.density == 1)
                    per.inair = 0
                    return
                else
                    per.loc=locate(per.x,per.y-1,per.z)
                    sleep(2)
                    Gravity(per)
            else
                return 0
client
    Northeast()
        return
    Northwest()
        return
    Southeast()
        return
    Southwest()
        return
    North()
        if(src.mob.dir == EAST)
            if(src.mob.inair == 0)
                src.mob.inair = 1
                for(var/i=1,i<4,i++)
                    src.Move(locate(src.mob.x,src.mob.y+1,src.mob.z),NORTH)
                    src.mob.dir = EAST
                    sleep(2)
                Gravity(src.mob)
                return
            else
                return
        if(src.mob.dir == WEST)
            if(src.mob.inair == 0)
                src.mob.inair = 1
                for(var/i=1,i<4,i++)
                    src.Move(locate(src.mob.x,src.mob.y+1,src.mob.z),NORTH)
                    src.mob.dir = WEST
                    sleep(2)
                Gravity(src.mob)
                return
            else
                return
    East()
        ..()
        if(src.mob.inair == 0)
            var/turf/checkdense = locate(src.mob.x,src.mob.y-1,src.mob.z)
            if(checkdense.density == 0)
                src.mob.inair = 1
                Gravity(src.mob)
            return

    West()
        ..()
        if(src.mob.inair == 0)
            var/turf/checkdense = locate(src.mob.x,src.mob.y-1,src.mob.z)
            if(checkdense.density == 0)
                src.mob.inair = 1
                Gravity(src.mob)
            return
    South()
        if(src.mob.inair == 1)
            return

It just wont work! When I go to jump, it jumps up one time, and then just falls ALL the way to the ground going through solid objects, hence null.density
Jan 30 2005, 3:06 pm
Try turning on debug mode and then telling us which line.
Jan 30 2005, 3:10 pm
In response to N1ghtW1ng
 
mob
    var
        inair
proc
    Gravity(var/mob/per)
        if(per.dir == EAST)
            if(per.inair == 1)
                var/turf/check = locate(per.x,per.y-1,per.z)
                if(check.density == 1) // <-- HERE
                    per.inair = 0
                    return
                else
                    per.loc=locate(per.x,per.y-1,per.z)
                    sleep(2)
                    Gravity(per)
            else
                return 0
        if(per.dir == WEST)
            if(per.inair == 1)
                var/turf/check = locate(per.x,per.y-1,per.z)
                if(check.density == 1)
                    per.inair = 0
                    return
                else
                    per.loc=locate(per.x,per.y-1,per.z)
                    sleep(2)
                    Gravity(per)
            else
                return 0
client
    Northeast()
        return
    Northwest()
        return
    Southeast()
        return
    Southwest()
        return
    North()
        if(src.mob.dir == EAST)
            if(src.mob.inair == 0)
                src.mob.inair = 1
                for(var/i=1,i<4,i++)
                    src.Move(locate(src.mob.x,src.mob.y+1,src.mob.z),NORTH)
                    src.mob.dir = EAST
                    sleep(2)
                Gravity(src.mob)
                return
            else
                return
        if(src.mob.dir == WEST)
            if(src.mob.inair == 0)
                src.mob.inair = 1
                for(var/i=1,i<4,i++)
                    src.Move(locate(src.mob.x,src.mob.y+1,src.mob.z),NORTH)
                    src.mob.dir = WEST
                    sleep(2)
                Gravity(src.mob)
                return
            else
                return
    East()
        ..()
        if(src.mob.inair == 0)
            var/turf/checkdense = locate(src.mob.x,src.mob.y-1,src.mob.z)
            if(checkdense.density == 0)
                src.mob.inair = 1
                Gravity(src.mob)
            return

    West()
        ..()
        if(src.mob.inair == 0)
            var/turf/checkdense = locate(src.mob.x,src.mob.y-1,src.mob.z)
            if(checkdense.density == 0)
                src.mob.inair = 1
                Gravity(src.mob)
            return
    South()
        if(src.mob.inair == 1)
            return
Jan 30 2005, 3:20 pm
In response to Skye Reaver
Right before the if() put world << "[check]" . That will see if check is what you want it to be I think.
Jan 30 2005, 3:26 pm
In response to N1ghtW1ng
Its something to do with the sky, here is the sky thingy, its SUPPOSED to be just a background, but i dunno
turf
    Turfs
        icon='Turfs.dmi'
        layer=1
        Sky
            icon_state="Sky"
        Cloud
            icon_state="Cloud"
        Cloud1
            icon_state="Cloud1"
        Cloud2
            icon_state="Cloud2"
        Bush1
            icon_state="Bush1"
        Bush
            icon_state="Bush"
Jan 30 2005, 3:29 pm
In response to N1ghtW1ng
It would probably be better to do if(check) and then the rest of his code if that really is the problem.