🌊 Nav Point Editor – Navigation Map Creation Guide

This guide explains how to create a 2D navigation map system for water-based movement using the Nav Point Editor tool.

At the end of this process, you’ll have three essential binary files for your pathfinding system:

• nav_matrix.dat → the walkability map (land/water)
• nav_vec.dat → the list of navigation points (nodes)
• matrix_int.dat → the full connection and distance matrix between nodes

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🗺️ 1. Create the Main Map

1. Create a main map image 2400×1800 pixels.
2. Add 64px borders on all four sides (usable area = 2272×1672).
3. Save as main_map.png.

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🌊 2. Create the Collision Map

1. Create a 640×472 image.
2. Use:
   • Black (1) = Land
   • Blue (0) = Water
3. Exclude the 64px borders.
4. Save as collision_map.png.

5. Use 'CompImage.py' tool to select the main map first, then the collision map, and overlay them to visually verify that both align correctly.

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⚙️ 3. Convert the Collision Map to Binary

Use 'ImgConv.py' converter tool to transform each pixel into binary values:

First 4 bytes:

[2 bytes] → Width = 640

[2 bytes] → Height = 472

Then:

Color	Binary
Black	00
Blue	01

Output to be renamed in → nav_matrix.dat

🧭 4. Draw Navigation Nodes

1. Launch Mapmaker.py.
2. Click to place nodes on water only (blue).
3. Default ~350 nodes.
4. Right-click to remove or drag to move.

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💾 5. Save Navigation Points

Click Save Points to generate nav_vec.dat. Format:

[2 bytes]  Number of points
[2 bytes]  Padding
For each point:
  [2 bytes] X coordinate
  [2 bytes] Y coordinate

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🔗 6. Generate the Navigation Matrix

Click Generate Matrix to create matrix_int.dat using Dijkstra’s algorithm.

Each pair (i, j) contains:

[4 bytes] Distance
[2 bytes] Next Node

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✅ 7. Verify Connectivity

Use Verify All to ensure all nodes are reachable.

Color	Meaning
🔴 Red	Isolated node
🟣 Purple	Unreachable node
🟠 Orange	Weak connection

If Everything is Okay nothing will happen,

If something is wrong:

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🧩 Final Files

File	Description
nav_matrix.dat	Walkability (land/water)
nav_vec.dat	Node list
matrix_int.dat	Distance matrix

Move those files in navdata

Enjoy!