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Found 4 results

  1. Hi all, This may be an easy question but I cannot seem to solve it myself after several attempts. For my Model Train Simulator in BabylonJS I'm creating a helix/spiral track, allowing trains on a lower section to quickly gain altitude within a short area (e.g. climbing a mountain). This is often used in 'hidden' sections on model train displays to have a train pass a valley track and next pass a mountain bridge which is position much higher (Y position) in the scene. When I construct the points of a helix/spiral using the formula from the docs https://doc.babylonjs.com/babylon101/parametric_shapes https://www.babylonjs-playground.com/#165IV6#61 And then use Path3D on these points to get the normals see the docs https://doc.babylonjs.com/how_to/how_to_use_path3d https://www.babylonjs-playground.com/#2DLXYB#1 https://www.babylonjs-playground.com/#8ICWNU Then I get an ever increasing cant/superelevation of my track, see the blue arrows in the picture which indicate the 'up' vectors. The result is that the track at the top has a cant. I use the Tangent, Normal and Binormal from the Path3D of the line/points to set the track rail and bed geometry, and position the train always perpendicular to the track (that is: up). But I want to have the Up vector always Vector3.Up(), or at least that there is no cant/superelevation and I can continue placing 'flat' track with it's normal Vector3.Up() on the top. The big blue arrow indicates Vector3.Up(). Current 'vector up' results from Path3D in my game: Blue = up vector (from Path3D). Large blue with _ = helix direction (Y axis) Yellow line through track = Line through the spiral center points (radius * cos t, radius * sin t, ascentfactor * t) Desired 'vector up' on the spiral/helix: (image found at http://www.easyhelix.com) Hope someone knows how to 'alter' the results from Path3D so I get the helix point orientation but without the cant/superelevation. So that I can 'lay the track' properly without trains 'falling off the track' because of cant/superelevation. Bonus questions: - the yellow marked area in the skybox marks another bug that is caused with a reflection texture intersection with the skybox. the default background color comes through on the waves. - the red box marks a mesh (air balloon) with a physics impostor that is already moving, but I want the physics computation to be paused until the user presses some 'start to play'-button, instead of physics computation right from the moment the scene is loading Happy coding, Q
  2. Nicholls

    Generating Procedural Racetracks

    Hi my friends, Someone has created a method for generating racetracks in Phaser? PD: I think the hardest thing to do is put the car slow if it leaves the road... I don't have idea Example: http://www.gamasutra.com/blogs/GustavoMaciel/20131229/207833/Generating_Procedural_Racetracks.php Thanks in advance!
  3. Hi guys! I'm trying to develop a road with Phaser (My idea is that a car moves for him). How can I do that when the car is outside is slow? My first test: http://codepen.io/jdnichollsc/pen/YPEeYe Any help is greatly appreciated! Regards, Nicholls
  4. SamStorms

    Filling A Polygon With A Texture

    I'm new here, though not new to game programming I'll try being short and to the point. My university's final year project is a Car Racing (2D top-down) game that takes any (ANY) route of the player's choice from Google maps and turns it into a race track. Then the player challenges their friends and race in real-time multiplayer. And the game is made in Phaser. I can take the array of points returned by the maps API and convert those into Cartesian coordinates and draw the whole track, with the boundaries of the road and everything. The problem I'm facing now is that I have a rectangular road texture, and I want to fill that shape generated from the points of the route with that road texture. Now, I asked this question to someone before and they suggested that I make the rectangular texture into a trapezoid and manipulate the individual sections, the more the sections the smoother the fill will be. Makes sense in theory. However, I can't find anything related to this in Pixi. Using another topic, I did learn how to skew images in HTML5 Canvas, but I can't figure out how to go about doing this in Pixi. Any help would be appreciated Thanks for reading! PS: Here's what my application can do, at the moment (apologies, I couldn't upload the picture here directly for some reason):