How We Made SPACE INVADERS: World Defense, an AR game powered by ARCore- Google Developers Blog
9/5/2023 · Dereck Bridie, Bradford Lee
What this post added
This post details the development of the "SPACE INVADERS: World Defense" AR game, highlighting the use of ARCore's Geospatial API, Streetscape Geometry API, and Geospatial Creator. It explains how the Geospatial API uses camera images and Street View data for real-world positioning, including a JavaScript code snippet for tracking accuracy checks. The Streetscape Geometry API is used to procedurally generate unique gameplay based on real-world topography and city layouts. The "Invader's Dimension" feature is described, involving a depth image and an A* search algorithm for path generation and smoothing. Geospatial Creator and Photorealistic 3D Tiles were used for visualizing virtual content in specific locations. Updates include Indoor Mode and score rebalancing to encourage outdoor play.