Initalising multi-dimentional arrays with muiltiple values

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IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

G'day!
I am trying to create a matrix of values to determine if a provided location should be a wall or an open space for a rudimentary raycaster. I am unsure how i could dimension all values at once. I have left my code at the bottom of this post.
Thank you for any solutions that are proposed,
- Ivan

Code: Select all

dim mapArray(45,80) as integer = {{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
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}
Last edited by IvanisIvan on Jul 15, 2021 6:12, edited 1 time in total.
fxm
Moderator
Posts: 12081
Joined: Apr 22, 2009 12:46
Location: Paris suburbs, FRANCE

Re: Initalising multi-dimentional arrays with muiltiple values

Post by fxm »

You must use the line continuation symbol " _" at each intermediate line end:

Code: Select all

dim mapArray(45,80) as integer = {{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}, _
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}, _
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}, _
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IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

fxm wrote:You must use the line continuation symbol " _" at each intermediate line end:
Thank you!
fxm
Moderator
Posts: 12081
Joined: Apr 22, 2009 12:46
Location: Paris suburbs, FRANCE

Re: Initalising multi-dimentional arrays with muiltiple values

Post by fxm »

Warning:
In FreeBasic language, the lower bounds of arrays are indexed to "0" by default:
dim mapArray(45,80)
is equivalent to:
dim mapArray(0 to 45,0 to 80) '' 46*81 elements
(so your above initializer is incomplete)

To start at "1", you must explicit it:
dim mapArray(1 to 45,1 to 80) as integer = ... '' 45*80 elements
dodicat
Posts: 7976
Joined: Jan 10, 2006 20:30
Location: Scotland

Re: Initalising multi-dimentional arrays with muiltiple values

Post by dodicat »

I think this gives you it.
You have 80 columns and 45 rows so 1 to 45 and 1 to 80 as fxm says.

Code: Select all

screen 20
dim mapArray(1 to 45,1 to 80) as uinteger
for m as long=1 to 45
for n as long=1 to 80
    if n=1 or n=80 then  maparray(m,n)=1
    print maparray(m,n);
next
print
next
print
sleep

 
NOTE: I have made uinteger so you can see them all.
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

fxm wrote:Warning:
In FreeBasic language, the lower bounds of arrays are indexed to "0" by default:
dim mapArray(45,80)
is equivalent to:
dim mapArray(0 to 45,0 to 80) '' 46*81 elements
(so your above initializer is incomplete)

To start at "1", you must explicit it:
dim mapArray(1 to 45,1 to 80) as integer = ... '' 45*80 elements
Ah I see, I expected it to index to 0, but I thought putting a single number would tell it that I want that many elements (0-44=45 elements)
I guess I was wrong but thank you for the information!!!
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

dodicat wrote:I think this gives you it.
You have 80 columns and 45 rows so 1 to 45 and 1 to 80 as fxm says.

Code: Select all

screen 20
dim mapArray(1 to 45,1 to 80) as uinteger
for m as long=1 to 45
for n as long=1 to 80
    if n=1 or n=80 then  maparray(m,n)=1
    print maparray(m,n);
next
print
next
print
sleep

 
NOTE: I have made uinteger so you can see them all.
Thank you for the cool implementation of automating the array!!!
fxm
Moderator
Posts: 12081
Joined: Apr 22, 2009 12:46
Location: Paris suburbs, FRANCE

Re: Initalising multi-dimentional arrays with muiltiple values

Post by fxm »

If you only need flags, you can use the Byte (or Boolean) type instead of the Integer type, in order to reduce the used data memory space.
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

fxm wrote:If you only need flags, you can use the Byte (or Boolean) type instead of the Integer type, in order to reduce the used data memory space.
good point! I will eventually introduce other types of "walls" such as doors or different textures which I hope to indicate with different numbers. :D
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

I now struggle drawing the array to the screen!!! I wanted to draw the array as 16 by 16 pixel red boxes, creating vertical lines along the edge of the screen, however, it seems to rotate itself 90 degrees. I also haven't sorted out the spacing yet...I have left the code block in question below!

Code: Select all

#include "fbgfx.bi"
#if __FB_LANG__ = "fb"
Using FB
#endif
do
    ScreenLock
    cls
    for x as integer = 0 to 44 step 1
        for y as integer = 0 to 79 step 1
            if mapArray(x,y) = 1 then
                line(x,y)-(x+16,y+16),4,BF
            end if
        next y
    next x
    ScreenUnlock
    Sleep 15, 1
Loop Until MultiKey(SC_ESCAPE)
fxm
Moderator
Posts: 12081
Joined: Apr 22, 2009 12:46
Location: Paris suburbs, FRANCE

Re: Initalising multi-dimentional arrays with muiltiple values

Post by fxm »

In all the graphics keywords (for predefined coordinate mapping), (x, y) designates the point of abscissa x (horizontal deviation) and of ordinate y (vertical deviation), with respect to the first point at the top left (0, 0).
The most logical thing for you would be to define an array rather like:
dim mapArray (79,44)

Example:

Code: Select all

#include "fbgfx.bi"
#if __FB_LANG__ = "fb"
Using FB
#endif

dim mapArray(79,44) as uinteger
for x as long=0 to 79
    for y as long=0 to 44
        if x=1 or x=79 then  maparray(x,y)=1
    next y
next x

screen 12

do
    ScreenLock
    cls
    for x as integer = 0 to 79 step 1
        for y as integer = 0 to 44 step 1
            if mapArray(x,y) = 1 then
                line(x,y)-(x+16,y+16),4,BF
            end if
        next y
    next x
    ScreenUnlock
    Sleep 15, 1
Loop Until MultiKey(SC_ESCAPE)
Not to be confused with the console keyword Locate x,y that designates the position on row x and column y, relative to the first position at the top left (1, 1).
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

fxm wrote:In all the graphics keywords, (x, y) designates the point of abscissa x (horizontal deviation) and of ordinate y (vertical deviation), with respect to the first point at the top left (0, 0).
The most logical thing for you would be to define an array rather like:
dim mapArray (79,44)

Example:

Code: Select all

#include "fbgfx.bi"
#if __FB_LANG__ = "fb"
Using FB
#endif

dim mapArray(79,44) as uinteger
for x as long=0 to 79
    for y as long=0 to 44
        if x=1 or x=79 then  maparray(x,y)=1
    next y
next x

screen 12

do
    ScreenLock
    cls
    for x as integer = 0 to 79 step 1
        for y as integer = 0 to 44 step 1
            if mapArray(x,y) = 1 then
                line(x,y)-(x+16,y+16),4,BF
            end if
        next y
    next x
    ScreenUnlock
    Sleep 15, 1
Loop Until MultiKey(SC_ESCAPE)
Not to be confused with the console keyword Locate x,y that designates the position on row x and column y, relative to the first position at the top left (1, 1).
I see, so I had my array around the wrong way! Thank you for your assistance.
dodicat
Posts: 7976
Joined: Jan 10, 2006 20:30
Location: Scotland

Re: Initalising multi-dimentional arrays with muiltiple values

Post by dodicat »

Because you are ranging a matrix for a screen then I think it better to have 1 to 80 as x co-ordinates and 1 to 45 as y co-ordinates.
This saves messing around.
Also because you are using a matrix then 1 based is appropriate.
Also modularize everything.

Code: Select all



Sub setupmatrix(maparray() As Long)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)    
      For x As Long=lb1 To ub1
            For y As Long=lb2 To ub2
                  If x=1 Or x=80 Then  maparray(x,y)=1
            Next
      Next
End Sub


Sub drawmatrix(maparray() As Long,startx As Long,finx As Long,starty As Long,finy As Long,clr As Ulong)
      #define map(a,b,x,c,d) ((d)-(c))*((x)-(a))/((b)-(a))+(c)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)
      Var szx=(finx-startx)\ub1+1
      Var szy=(finy-starty)\ub2+1
      For m As Long=lb1 To ub1
            For n As Long=lb2 To ub2
                  Var x=map(lb1,ub1,m,startx,finx)
                  Var y=map(lb2,ub2,n,starty,finy)
                  If maparray(m,n)=1 Then Line(x,y)-(x+szx,y+szy),clr,bf
            Next
      Next
End Sub


Screen 20,32

Dim mapArray(1 To 80,1 To 45) As Long  '1 to 80 in x direction, 1 to 45 in y direction.
setupmatrix(mapArray())

drawmatrix(maparray(),100,900,100,600,Rgb(0,100,200)) 'matrix screen range 100 to 900 (X) and 100 to 600 (Y)
Sleep

 
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

dodicat wrote:Because you are ranging a matrix for a screen then I think it better to have 1 to 80 as x co-ordinates and 1 to 45 as y co-ordinates.
This saves messing around.
Also because you are using a matrix then 1 based is appropriate.
Also modularize everything.

Code: Select all



Sub setupmatrix(maparray() As Long)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)    
      For x As Long=lb1 To ub1
            For y As Long=lb2 To ub2
                  If x=1 Or x=80 Then  maparray(x,y)=1
            Next
      Next
End Sub


Sub drawmatrix(maparray() As Long,startx As Long,finx As Long,starty As Long,finy As Long,clr As Ulong)
      #define map(a,b,x,c,d) ((d)-(c))*((x)-(a))/((b)-(a))+(c)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)
      Var szx=(finx-startx)\ub1+1
      Var szy=(finy-starty)\ub2+1
      For m As Long=lb1 To ub1
            For n As Long=lb2 To ub2
                  Var x=map(lb1,ub1,m,startx,finx)
                  Var y=map(lb2,ub2,n,starty,finy)
                  If maparray(m,n)=1 Then Line(x,y)-(x+szx,y+szy),clr,bf
            Next
      Next
End Sub


Screen 20,32

Dim mapArray(1 To 80,1 To 45) As Long  '1 to 80 in x direction, 1 to 45 in y direction.
setupmatrix(mapArray())

drawmatrix(maparray(),100,900,100,600,Rgb(0,100,200)) 'matrix screen range 100 to 900 (X) and 100 to 600 (Y)
Sleep

 
Thank you for your comments!
Firstly, Why would indexing at 1 be better for drawing on the screen if the first x,y pos on the screen is 0,0?
also, I find it difficult to understand the code you have written so it may take me a couple times reading over it slowly or desk checking to fully understand what you have written.
Thank you for the tip about modularisation, this is very helpful!!!
IvanisIvan
Posts: 44
Joined: Nov 07, 2019 21:57

Re: Initalising multi-dimentional arrays with muiltiple values

Post by IvanisIvan »

dodicat wrote:Because you are ranging a matrix for a screen then I think it better to have 1 to 80 as x co-ordinates and 1 to 45 as y co-ordinates.
This saves messing around.
Also because you are using a matrix then 1 based is appropriate.
Also modularize everything.

Code: Select all



Sub setupmatrix(maparray() As Long)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)    
      For x As Long=lb1 To ub1
            For y As Long=lb2 To ub2
                  If x=1 Or x=80 Then  maparray(x,y)=1
            Next
      Next
End Sub


Sub drawmatrix(maparray() As Long,startx As Long,finx As Long,starty As Long,finy As Long,clr As Ulong)
      #define map(a,b,x,c,d) ((d)-(c))*((x)-(a))/((b)-(a))+(c)
      Var lb1=Lbound(maparray,1),ub1=Ubound(maparray,1)
      Var lb2=Lbound(maparray,2),ub2= Ubound(maparray,2)
      Var szx=(finx-startx)\ub1+1
      Var szy=(finy-starty)\ub2+1
      For m As Long=lb1 To ub1
            For n As Long=lb2 To ub2
                  Var x=map(lb1,ub1,m,startx,finx)
                  Var y=map(lb2,ub2,n,starty,finy)
                  If maparray(m,n)=1 Then Line(x,y)-(x+szx,y+szy),clr,bf
            Next
      Next
End Sub


Screen 20,32

Dim mapArray(1 To 80,1 To 45) As Long  '1 to 80 in x direction, 1 to 45 in y direction.
setupmatrix(mapArray())

drawmatrix(maparray(),100,900,100,600,Rgb(0,100,200)) 'matrix screen range 100 to 900 (X) and 100 to 600 (Y)
Sleep

 
what I find most curious is the #define command in line 15 as well as the use of the Var command. Although I could probably guess inaccurately, what does it do?
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