This is a game example to show how to use a Marching Squares extension to display a fog of war with GDevelop. The source can be found directly in GDevelop in the examples list.

It uses a Marching Squares extension that allows to do operations on scalar fields without math or coding knowledge.

The Scalar Field Painter library is open-source.

The assets come from https://pixelfrog-assets.itch.io/

Open this game with GDevelop online editor

More information
StatusPrototype
PlatformsHTML5
AuthorD8H
Made withGDevelop
Code licenseMIT License

Comments

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diathorn257 days ago

Hello. The function "change the field area bounds" doesnt seem to work

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ChimaereJade311 days ago (1 edit)

Hey there,
thanks for all of your hard work! I was trying this technique yesterday and got some java-script related errors after a while:.

TypeError: Cannot read properties of undefined (reading '18')     
at ScalarField.GDJSInlineCode.ScalarField.extrapolate (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__definescalarfieldpainterlibrary-func.js:328:53)     
at HeightMap.GDJSInlineCode.HeightMap.getHeight (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__definescalarfieldpainterlibrary-func.js:920:37)     
at MarchingSquaresBehavior.GDJSInlineCode.prototype.containsPoint (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__marchingsquaresbehavior.js:216:35)     
at Object.GDJSInlineCode [as userFunc0xa371b8] (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__marchingsquaresbehavior.js:4353:46)     
at Object.gdjs.evtsExt__MarchingSquares__MarchingSquaresBehavior.MarchingSquaresBehavior.ContainsPointContext.eventsList0 (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__marchingsquaresbehavior.js:4363:111)     
at MarchingSquaresBehavior.gdjs.evtsExt__MarchingSquares__MarchingSquaresBehavior.MarchingSquaresBehavior.ContainsPoint (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/gdjs-evtsext__marchingsquares__marchingsquaresbehavior.js:4433:111)     
at Object.gdjs.level_95sceneCode.eventsList1 (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/code0.js:165:99)     
at Object.gdjs.level_95sceneCode.eventsList2 (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/code0.js:323:24)     
at Object.gdjs.level_95sceneCode.eventsList11 (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/code0.js:1136:107)     
at c.gdjs.level_95sceneCode.func [as _eventsFunction] (file:///C:/Users/MyName/AppData/Local/Temp/GDTMP--1/preview/code0.js:1588:24)

I would be really thankfull if you would know a way to fix this. I also would try to help you as good as possible.

Edit: Also I'm trying to figure out how I can improve the black screen-size further away from the screen.

Thanks anyway! :)

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D8H295 days ago

Thank you for your feedback. The issue is fixed in the new version.

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devncow2 years ago

Hello, how to have "square" cells and not round cells ?

For instance, to use in a tiled strategy game.

Thanks 

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D8H256 days ago

I guess this other demo would better fit what you want: https://d8h.itch.io/tactical-movement-demo

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