Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
Archive of the
Manic Miner & Jet Set Willy Yahoo! Group
messages
|
|
|
|
|
Message: 5693
Author: john_elliott_uk
Date: 09/03/2006
Subject: Re: JSWED 2.3.1: Andrew's comments (Chapter 6)
--- In manicminerandjetsetwilly@yahoogroups.com, andrewbroad
> I could write another PhD thesis on some of the decisions JSWED
Or you could submit patches to change its behaviour.
> makes when converting between heterogeneous formats (e.g. Fire-2
> cells map to Water-cells when converting MM to JSW48)
For each of the four major room-formats (JSW48, JSW64, JSW2 and
Manic Miner) there's a function called normaliseCells(), whose task it
is to work out how the
void Jsw48Room::normaliseCells(ImportCell *p, int count)
The JSW48 one starts off by mapping all the cells to water with a
numberInRoom of -1:
for (n = 0; n < count; n++)
{
p[n].behaviour = CB_WATER;
p[n].numberInRoom = -1;
}
which means, pretty much, that everything gets mapped as water and
the cell graphic is discarded. Later on it then makes exceptions for
the specific cell types which it reckons can be represented by the
JSW48 room format; when numberInRoom is positive, it instructs the
game to import the cell graphic into the 'numberInRoom'th slot. If you
wanted secondary fire cells to be mapped as fire (which is a sensible
enough idea) then change it so all fire cells are mapped as fire and
other unknowns to water:
for (n = 0; n < count; n++)
{
if (p[n].behaviour == CB_FIRE)
{
p[n].numberInRoom = -3;
}
else
{
p[n].behaviour = CB_WATER;
p[n].numberInRoom = -1;
}
}
Voila. Well, not quite, because the Vat seems to be putting up a
fight :-)
|
|
|