Please help me on how to solve my code.

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#1

How do you reference an interaction between two objects? For example if a character and a zombie collide with each other, what would I need to write so that the zombie itself disappears on collision? Thank you for your help.

#2

first thing you need to do is assigning names to the objects and then do the following

[lua]

function onCollision_zombi(e)

    if e.phase == “began” then

        if (e.other.name == “character”) then

            if e.target ~= nil then

                e.target:removeSelf()

            end

        end

    end

end

[/lua]

with this code the zombie will disappear only if it collides with the character.

Moha.

#3

Thank you so much for responding… 

I wrote this now: function onCollision( event )

–print(“collide!”)

happy:removeSelf()

happy = nil

end

Runtime:addEventListener(“collision”, onCollision)

if happy == nil

then

display.newText( “You lose” )

end

Now when I run it, it gives me an error. error: "Attempt to index upvalue ‘happy’(a nil value).

I’m trying to make it that when the zombie collides with character (happy), happy disappears (which is not that different from what I was trying to do before.) Also the collisions are REALLY buggy, and sometimes the zombie is a good few inches away from the character but the character disappears anyway… How do I solve this? Also I want to make sure when the character disappears, the screen transitions to a new screen that shows a game over button… I know this might be a lot but thanks for responding!! 

#4

Try using the timer.performWithDelay().

I think you cant or shouldn’t really cant remove an object at the time of onCollision you may need to set a simple delay to get around the issue.

Try this

timer.performWithDelay( 1, function()  timer.performWithDelay( 1, function() happy:removeSelf(); end ) or based on hammod-930 example above if e.target ~= nil then        timer.performWithDelay( 1, function() e.target:removeSelf(); end ) end

Good Luck,

Larry

#5

first thing you need to do is assigning names to the objects and then do the following

[lua]

function onCollision_zombi(e)

    if e.phase == “began” then

        if (e.other.name == “character”) then

            if e.target ~= nil then

                e.target:removeSelf()

            end

        end

    end

end

[/lua]

with this code the zombie will disappear only if it collides with the character.

Moha.

#6

Thank you so much for responding… 

I wrote this now: function onCollision( event )

–print(“collide!”)

happy:removeSelf()

happy = nil

end

Runtime:addEventListener(“collision”, onCollision)

if happy == nil

then

display.newText( “You lose” )

end

Now when I run it, it gives me an error. error: "Attempt to index upvalue ‘happy’(a nil value).

I’m trying to make it that when the zombie collides with character (happy), happy disappears (which is not that different from what I was trying to do before.) Also the collisions are REALLY buggy, and sometimes the zombie is a good few inches away from the character but the character disappears anyway… How do I solve this? Also I want to make sure when the character disappears, the screen transitions to a new screen that shows a game over button… I know this might be a lot but thanks for responding!! 

#7

Try using the timer.performWithDelay().

I think you cant or shouldn’t really cant remove an object at the time of onCollision you may need to set a simple delay to get around the issue.

Try this

timer.performWithDelay( 1, function()  timer.performWithDelay( 1, function() happy:removeSelf(); end ) or based on hammod-930 example above if e.target ~= nil then        timer.performWithDelay( 1, function() e.target:removeSelf(); end ) end

Good Luck,

Larry