Laurent's Forum Posts

  • When DrawingCanvas.PixelScale is >1, there may be some data loss. Should be fixed now, please re-download the file.

    Wow ! That's absolutly beautiful ! Thank you very much.

    I'll then try to adapt it to allow more than two colors. I was surprised to see that the red component for pixel was nowhere to be find in the different ways to code color. I think I'll use a bitmap with many colors and use SanpshotRed/Green/Blue at to se what values are return in these pixels.

  • Laurent Check this out:

    https://www.dropbox.com/s/u59b4ogf0vwo4lm/BitmapToTilemap.c3p?dl=0

    Thanks dop2000 !

    That's most impressive, I see the logic behind.

    Unfortunately, it's still seems to work erraticly. Most of the time, the design is perfectly transcribes, but it stills displays two rows vertically when the bitmap has only one.

    I never thought it would be so difficult to sort out. I guess I will rely on some sort of array.

    My goal was to create solid tilemaps to display invisible above a map drawing in order to code obstacles for pathfinding.

  • You can use "pick by point". Its a bit weird as far as setting up goes but it works.

    I'll be happy to see this in action

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  • > construct.net/en/forum/construct-2/how-do-i-18/simple-scorched-earth-worms-129595/page-2

    Unfortunately that method doesn't work in C3

    Damn ! We're doomed...

  • Hello

    I try to create an engine that will allow me to build tilemaps from a bitmap. I think it will be an easy and memory friendly system to store tilemaps.

    Thanks to calminthenight, I managed to adapt this little engine that works this way :

    - create a bitmap on transparent background where every pixel represents a tile in the tilemap

    - paste bitmap in canvas object, take a snapshot

    - scan the snapshot line after line ans check certain color (in the current example, I scan only for red pixels, i.e. where DrawingCanvas.SnapshotRedAt = 62)

    - create related tile at same coordinate in the tilemap

    The system logic is ok but it seems there is a viewport scale issue, i.e. when my original bitmap is 10x10 pixels, its size changes according to viewport scale when layout is displayed. So the created snapshot could be bigger, a 1x1 pixel could become a 2x2 pixel and the tilemap is not correctly created. Here is the original file : https://www.dropbox.com/s/p4my3kk4tcihbk2/MapFromPixelSprite.c3p?dl=0

    Following are two screencap showing how thinks show on screen at different viewport sizes and the image of the original sprite.

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  • There ya go : dropbox.com/s/g6vk2edgy81lmrw/spritecoordinatearray_edited.c3p

    edit : ok I see you want to spawn the sprites instead of flash, well use my logic and instead use create sprite action and also an action of set ID to the tokenat value displayed in the condition at line 9

    Thank you very much !! I managed to adapt your tip to create sprites.

    Here's the file, if it can be useful to anyone : https://www.dropbox.com/s/oaq41k1xn2fuw0m/MapFromJson.c3p?dl=0

  • My approach would be to have the next instance variable with all the instance IDs so it could be "1,2,3" then you could use the tokenat expression to grab individual numbers, and use a loop to run through each picked instance. If you can't work it out maybe I can add to the project file if I have time.

    Thank you ! Indeed, it's beyond my skills. Actually, this loop approach would be to allow to spawn more than one instance when a sprite is clicked. for example, when sprite with SpriteID = 1 is clicked, create instances with SpriteID 2 and 3.

    I updated the file here : https://www.dropbox.com/s/3b7b6q09kuwkybx/SpriteFromArray_Test.c3p?dl=0

  • You could either pick all sprites again using system pick all and then use your pick condition (within the same sub event) or you could use a function and pass the values through as parameters to pick the correct sprite.

    Thank you ! I managed to do it following your first suggestion but I'm very curious to see how you would code the second one.

    Any idea on how to code link to multi instances ?

  • I'm building an engine to populate a layout with instances by using an array that contains instance X and Y, opacity, visibility, etc.

    Instances are connected between them and array also contains their connections in a way that if I click on an instance, the related instance will flash. This is determined by the column called Next in the json. In this case, Instance 1 flashes Instance 2, Instance 2 flashes Instance 3 and

    Instance 3 flashes Instance 1.

    So far, I was not able to build this connection between sprite. My attempt is line 5 and 6 of the code.

    I'll be grateful if someone could help me with this.

    Also : I'd like to have more than one connection between instance. For example, instance 1 when clicked flashes instance 2 and 3. I thought about populating the array with strings like "2,3" but don't know how to parse them.

    C3p can be found here https://www.dropbox.com/s/lyvoap25so4bs6p/SpriteFromArray_Test.c3p?dl=0

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  • It perfectly does the trick. Thank you !

    Thank you, in the later videos I have increased the Construct font size to show better what I am writing.

    For your issue add a sub event, if sprite is visible, then Array.at(X,Y,Z) = 1, else 0.

    That should do the trick.