11/23/2023 0 Comments Minetest minimap![]() The crafting recipe for the Radar item changes depending on which mods are installed:ĭownload the master branch or the latest release, and follow the usual installation steps.Īlternatively, you can download and install the mod from ContentDB or the online content tab in Minetest. Note that the Radar item also enables the surface mode of the minimap, which means you don't need to carry a Mapping Kit in your inventory if you have a Radar item. Use the Minimap key to toggle the minimap on, and switch between modes.Place the Radar item anywhere in your inventory.Craft (or give yourself) the Radar item (see crafting below).It would be possible to alleviate that problem by increasing the order of the maze to something bigger than 2x2, but I havent tried to do that.A simple extension to Minetest Game's map mod, this mod adds a single craftable item, that when placed in a player's inventory, enables the use of the radar mode of the minimap. With this generation method, at the centre of the maze there will always be two walls extending one from top to bottom and one from left to right, except for exactly three holes (one in one of the walls and two in the other). With both changes, the maze will be a valid 32768x32768 maze. Under the "first the fixed walls" comment, add this code: setwall(xpos + 1, zpos + 4) The two missing outer walls aren't generated because they were going to be out of the map anyway. At each level, each of the four quadrants needs to be examined, and if the area being generated intersects it, it needs to be recursed into.Ī complete, valid maze, except for two missing outer walls, can be generated by replacing this line: mazegen_recursive(-32768, -32768, 32768) In this implementation, given the size of the maze, that means 14 levels of recursion. In order to know whether to draw a wall or not at a given location, due to the non-locality of mazes, all levels of recursion need to be examined, and the algorithm is not very different from that of querying a quadtree. There are four possible 2x2 mazes, which are the four possible rotations of a U shape. I chose 2x2 rooms at all nesting levels for simplicity, because that simplifies a lot of things. So, instead of removing a wall of the big maze, what is removed is a passage-sized section of the outer wall of the smaller, room-sized maze, at a random location.Īpplying this concept recursively, we can build a big maze out of smaller ones. Well, what if each room is not just an empty space, but is also a maze in itself? Since every maze allows travelling between two arbitrary points, a room and a maze are equivalent. A maze basically consists of taking a grid of rooms each with four walls, and removing certain walls between the rooms until you get the maze. The one chosen is the recursive nested maze. There are very few algorithms that are suitable for generating mazes that are big in two dimensions and keep locality. Placing a wall at a certain location could divide the maze into two areas, and it's not possible to know whether it does without at least some knowledge of the structure of the rest of the already generated part of the maze.Īs a consequence, standard generating methods necessarily need to keep the whole maze in memory, which of course is not feasible for a 61000圆1000 maze in Minetest. Generating a maze is a very non-local process. However, due to the method of generation, I believe that within the 16385x16385 square that goes from 0 to 16384 in both directions, it's guaranteed that there's always a path from any point to any other point. ![]() Therefore, if a path from an arbitrary point A to another arbitrary point B needs to go through the area outside the 61840圆1840 map, there will be no path to go from A to B. The coordinates are truncated because the maximum size of a Minetest map is 61840圆1840. The maze is a subset of a bigger, 65537圆5537 nodes maze. ![]() It is intended to give the visual impression of an "infinite maze", while keeping some degree of credibility. This maze is not intended to be solvable. To use, create a new world and activate the mod before entering the world for the first time. Maze MapGen: Generate a world that consists of a 2D maze extending to the world's limits. ![]()
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