Click the link below to a playlist on Youtube. To watch all prototype demonstrations.
The quality are much better than GIF format pictures.

https://www.youtube.com/playlist?list=PLTI2q1eS5IvwkldTieIZ199LnXfUkSzWy

 This demonstration shows the protagonist driving a car on road.
To control a car, the method very simillar to "character movement".
The player is always faster than other vehicles on road.

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During the chapter 2 in the game, a vehicle will be unlocked for the protagonist to use.

The demontration shows how to buy an item in a store. The player controls the protagonist to talk to the shop keeper then a menu shows that what can be purchased. Then select an item and its quantity. If currency decreased, means successfully purchased. The item holding limitation is 99 maximum.
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Also the player can sell any items to the shop keeper, to recover some money. However the item will be half priced.

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Purchase items by build-in currency.
The demontration shows how to buy an energy drink on a machine. The player interacts with a machine on the street, the a menu shows that what can be purchased. Then select an item and its quantity. If currency decreased, means successfully purchased. The item holding limitation is 99 maximum.
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In Javascript, set vehicles as "cyclic moving items". So this can make a "cars on road" effect.
In further improvement, I can make the game ended if the protagonist is crashes by any car on road.

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switch to another scene.

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Triggering an event to talk to an NPC by reaching a specified point.
I have set a specific point in this demonstration that triggers a conversation with mom (NPC)

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Press "ESC" for the game menu, then press "Save". Chose a place to save your game.
Press "Welcome back" when you entered the title page, and then select a saved file to continue your game.

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