Snag and Broken Wall are basically the same.
If you give damage it breaks, Tile Changes set at that point will be executed.

In the Prologue, Broken Wall can not be put because the map type is a fields.

However, if it is Snag, it can be put.
This time I will explain how to put Snag.

Please select Map Editor.

In Map Editor, select Snag.
It is on the top right of Map Chip.

Please put it in a suitable place on the map.
This time it was near the river.

Write it with “Write to ROM”.

Next, set the Tile Changes when Snag collapses.
Please click “Add Tile Changes” button.

As you are asked “Would you like to create additional Tile Changes?”, Select “Yes”.

We came to the setting of “Tile Changes: 0”.
It is necessary to define Tile Changes including tiles with Snag put.

Please click “Resize” button.

Please set X:3 Y:1 B:1.
(XY:3,1 increase 1 tile below and make it a long rectangle under 2 tiles.)

We moved the position of Tile Changes.

Select “Bridge”.
When Snag is defeat, it becomes Bridge.

Fill the changing tiles with Bridge tiles.

Write Tile Changes with “Write to ROM”.

Start the emulator with the F5 key and let's check it.

Attacking “Snag” …\r\n

“Snag” was defeated, it became a bridge.

This is how to put Snag.
Broken Wall is also created the same way.

I will explain how to put Chest.

Please select Map Editor.

In Map Editor, select Chest.
It is on the top right of Map Chip.

Please put Chest on the map.

Write it with “Write to ROM”.

Next, we set up Empty Chest which is the tile when Chest was opened.
Please click “Add Tile Changes” button.

As you are asked “Would you like to create additional Tile Changes?”, Select “Yes”.

We came to set Tile Changes: 0.
Create Empty Chest on top of Chest.

Click the “Resize” button to align the position.

Please set X: 4 Y: 3.

We moved the position of Tile Changes.

Select “Empty Chest”.

Please set “Empty Chest” in the position of Tile Changes.

Write to ROM with “Write to ROM”.



Chest and Empty Chest are now created.
However, there are still things to set up.
It is an item in Chest.

Let's go back to the Main Screen.
Then click on the part marked “Event”.

We came to the “Event condition” screen.
From the “Event type” combo box, select “Map object”.

We came to the map object setting screen.
Since there is no map object in prologue, it is empty.

Please press the “Extend List” button to secure the place to set Chest.

Although it will be displayed in various ways, for the time being, please do not change anything and press the “execute movement process” button.

The map object is expanded.

However, this time, I secured five as well.
It is a waste of capacity.

When making it properly, please set the necessary capacity.

Set the “occurrence type” to “07=Chest”.

It switched to Chest setting.

Set the coordinates of Chest in “Coordinate”.

In the “contents of Chest”, set items that can be acquired.
This time, I made “ID: 88 Master Seal”.

Please set “14=Chest” to “Type”.
(Be careful not to forget this setting.)

Since setting is done, press “Write” button and write it to ROM.

Chest, Empty Chest, and the contents of Chest were set.
Chest is now complete.

Let's return to the main screen.
You can see that the Event mark is attached to the set Chest and its Chest.



I'd like to start the emulator and check the operation, but there is one problem.
That's because prologue does not have Chest Key, so you can not open Chest.
Eirika needs to have Chest Key.

Double click on Eirika.

Jump to the setting of Eirika of prologue.
We will have Chest Key in Eirika.

Click item 2 on Eirika and put out item screen.

Please select ID:69 Chest Key.
Then double click on Chest Key.

For Eirika's belongings 2, Chest Key was set.

Write to ROM with “write”.

We are now ready to check.
Start the emulator with the F5 key and let's check it.

Naturally, Eirika has a Chest Key.

If you move Eirika over Chest, “Chest” menu will be displayed.

We got “Master Seal”.

Since We got the treasure, Chest becomes an empty box.

This concludes the explanation of Chest's setting method.

About the visit to the village, there is a dedicated article, please see here.
Village visit and village destruction_EN

I will show you how to execute Tile Changes from Event Script.

Please select Map Editor.

Set up changing tile.
Please click “Add Tile Changes” button.

“Would you like to create additional Tile Changes?”と聞かれるので、“Yes”を選択してください。

We came to set Tile Changes: 0.
Let's expand it to a tile of 6 × 6 in the meantime.

We changed the size of Tile Changes.

Arrange the tiles to be changed when Tile Changes happens.
Let's arrange them properly.

Write Tile Changes with “Write to ROM”.

Set an Event to trigger this Tile Changes.
First, return to the Main Screen.

In the prologue, events that operate on each turn are set, so let's piggyback.
This time,Let's extend the Event that will be executed on the enemy turn of turn 1.

Please click on the Event part.

We came to the Event Script screen.
Double click on the “End chapter event” section at the end.

The control panel is displayed.
Click the “Change Instruction” button.

We came to the instruction selection screen.

From “Category”, select “Map Relationship”.

Because instructions related to the map are displayed, please select “Perform partial map change”.



Double click on this line or press the button to select the command.

The instructions we chose earlier will be displayed.

Tile Changes: Since We made Tile Changes to 0, I do not have to change anything.
Please click “New Insert” button.

Event was inserted.

Finally, write “Event” with the “Write” button.

Start the emulator with the F5 key and let's check it.

When turning back to enemy turn, Event will be executed.
(This Event is set for the Event to be executed on enemy turn of turn 1.)

The explanation is over with the above.
Please create more Tile Changes and enjoy.