multi-dimension array problem in RGSS (RPG Maker XP)
- by AzDesign
This is my first day code script in RMXP. I read tutorials, ruby references, etc and I found myself stuck on a weird problem, here is the scenario:
I made a custom script to display layered images
Create the class, create an instance variable to hold the array, create a simple method to add an element into it, done
The draw method (skipped the rest of the code to this part):
def draw
image = []
index = 0
for i in [email protected]
if image.size > 0
index = image.size
end
image[index] = Sprite.new
image[index].bitmap = RPG::Cache.picture(@components[i][0] + '.png')
image[index].x = @x + @components[i][1]
image[index].y = @y + @components[i][2]
image[index].z = @z + @components[i][3]
@test =+ 1
end
end
Create an event that does these script
> $layerz = Layerz.new $layerz.configuration[0] = ['root',0,0,1]
> $layerz.configuration[1] = ['bark',0,10,2]
> $layerz.configuration[2] = ['branch',0,30,3]
> $layerz.configuration[3] = ['leaves',0,60,4] $layerz.draw
Run, trigger the event and the result :
ERROR! Undefined method`[]' for nil:NilClass pointing at this line on draw method :
image[index].bitmap = RPG::Cache.picture(@components[i][0] + '.png')
THEN, I changed the method like these just for testing:
def draw
image = []
index = 0
for i in [email protected]
if image.size > 0
index = image.size
end
image[index] = Sprite.new
image[index].bitmap = RPG::Cache.picture(@components[0][0] + '.png')
image[index].x = @x + @components[0][1]
image[index].y = @y + @components[0][2]
image[index].z = @z + @components[0][3]
@test =+ 1
end
I changed the @components[i][0] to @components[0][0] and IT WORKS, but only the root as it not iterates to the next array index
Im stuck here, see :
> in single level array, @components[0] and @components[i] has no problem
> in multi-dimension array, @components[0][0] has no problem BUT
> in multi-dimension array, @components[i][0] produce the error as above
> mentioned.
any suggestion to fix the error ? Or did I wrote something wrong ?
