using global variables you could definitely determine the number to be joined, ie a dialog buble pops up with the challenge;
connect 5 trains, then in the same event the global variable gb_targetNumber is set to a value of 5.
you then have th eplayer
"pick up" a train, ie they walk over the train item they now have it in their posession.**
they change appearances and wwhen they walk over the drop zone/use the train withing a certain zone, designated by the event tiles, the item is automatically used which changes the player animation to that of them setting it down, etc etc. this of course needs to be fleshed out and the use of more variables will be necessary but basically that's the idea.
**and you being well prepared have built 4/8 directional poses of what the character looks like with the different train segments in hand.(a good time to either be using a 3D modelling app or photoshop's layers)
the manual will be of greater service, and if you've ever played zelda/donkeyKong/bomberMan, what you'll basically be doing is creating a gentler version of the 'pickUp & throw' mechanic present in those games.
take full advantage of the bezier curve and layers to plot out the train animations...this sounds like a fun project indeed.
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Kit's ABC adventure, by Klatu/JAS of sinthesisent, is similar to your phonetic idea.
But also along those lines you might want to check out Cosmic Memory on the coldstone CD(its complex god bless you if you can wade thru it).
Even more relevant fooling ith the experience points, level,skill table and such.
For example i created a NPC that when the player came in contact with his exp was boosted by 100 which in levels him up, which in turn triggers the eventlink link in the skill table.
This applies when it comes to presenting random letters and such, based on interaction.
in your case you might want to seperate each level value by 1 that way you can use the change global action to set the experience to a value between 1-however many events you need. when the event link is fired the game will sound out the letter, trigger the stamp animation etc.
by the by stick to using in game graphics and sprites.
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If this is cryptic...
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(This message has been edited by ellrx (edited 02-04-2003).)