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Pathfinding 2D Illustration
Pathfinding or pathing is the search, by a computer application, for the shortest route between two points. It is a more practical variant on Maze-solving algorithm, solving mazes. This field of research is based heavily on Dijkstra's algorithm for finding the shortest path on a Glossary of graph theory#Weighted graphs and networks, weighted graph. Pathfinding is closely related to the shortest path problem, within graph theory, which examines how to identify the path that best meets some criteria (shortest, cheapest, fastest, etc) between two points in a large network. Algorithms At its core, a pathfinding method searches a graph (data structure), graph by starting at one Vertex (graph theory), vertex and exploring adjacent node (computer science), nodes until the destination node is reached, generally with the intent of finding the cheapest route. Although graph searching methods such as a breadth-first search would find a route if given enough time, other methods, which " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transportation Planning
Transportation planning is the process of defining future policies, goals, investments, and spatial planning designs to prepare for future needs to move people and goods to destinations. As practiced today, it is a collaborative process that incorporates the input of many stakeholders including various government agencies, the public and private businesses. Transportation planners apply a multi-modal and/or comprehensive approach to analyzing the wide range of alternatives and impacts on the transportation system to influence beneficial outcomes. Transportation planning is also commonly referred to as transport planning internationally, and is involved with the evaluation, assessment, design, and siting of transport facilities (generally streets, highways, bike lanes, and public transport lines). Models and sustainability Transportation planning, or transport planning, has historically followed the rational planning model of defining goals and objectives, identifying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigation Mesh
A navigation mesh, or navmesh, is an abstract data structure used in artificial intelligence applications to aid agents in pathfinding through complicated spaces. This approach has been known since at least the mid-1980s in robotics, where it has been called a meadow map, and was popularized in video game AI in 2000. Description A navigation mesh is a collection of two-dimensional convex polygons (a polygon mesh) that define which areas of an environment are traversable by agents. In other words, a character in a game could freely walk around within these areas unobstructed by trees, lava, or other barriers that are part of the environment. Adjacent polygons are connected to each other in a graph. Pathfinding within one of these polygons can be done trivially in a straight line because the polygon is convex and traversable. Pathfinding between polygons in the mesh can be done with one of the large number of graph search algorithms, such as A*. Agents on a navmesh can thus avoid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hierarchical Path-Finding A*
A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an important concept in a wide variety of fields, such as architecture, philosophy, design, mathematics, computer science, organizational theory, systems theory, systematic biology, and the social sciences (especially political science). A hierarchy can link entities either directly or indirectly, and either vertically or diagonally. The only direct links in a hierarchy, insofar as they are hierarchical, are to one's immediate superior or to one of one's subordinates, although a system that is largely hierarchical can also incorporate alternative hierarchies. Hierarchical links can extend "vertically" upwards or downwards via multiple links in the same direction, following a path. All parts of the hierarchy that are not linked vertically to one anothe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CPU Time
CPU time (or process time) is the amount of time that a central processing unit (CPU) was used for processing instructions of a computer program or operating system. CPU time is measured in clock ticks or seconds. Sometimes it is useful to convert CPU time into a percentage of the CPU capacity, giving the CPU usage. Measuring CPU time for two functionally identical programs that process identical inputs can indicate which program is faster, but it is a common misunderstanding that CPU time can be used to compare ''algorithms''. Comparing programs by their CPU time compares specific ''implementations'' of algorithms. (It is possible to have both efficient and inefficient implementations of the same algorithm.) Algorithms are more commonly compared using measures of time complexity and space complexity. Typically, the CPU time used by a program is measured by the operating system, which schedules all of the work of the CPU. Modern multitasking operating systems run hundreds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanford Research Institute Problem Solver
The Stanford Research Institute Problem Solver, known by its acronym STRIPS, is an automated planning, automated planner developed by Richard Fikes and Nils Nilsson (researcher), Nils Nilsson in 1971 at SRI International. The same name was later used to refer to the formal language of the inputs to this planner. This language is the base for most of the languages for expressing automated planning problem instances in use today; such languages are commonly known as action languages. This article only describes the language, not the planner. Definition A STRIPS instance is composed of: * An initial state; * The specification of the goal states – situations that the planner is trying to reach; * A set of actions. For each action, the following are included: ** preconditions (what must be established before the action is performed); ** postconditions (what is established after the action is performed). Mathematically, a STRIPS instance is a quadruple \langle P,O,I,G \rangle, in w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Game Industry
The video game industry is the tertiary industry, tertiary and quaternary industry, quaternary sectors of the entertainment industry that specialize in the video game development, development, marketing, distribution (marketing), distribution, video game monetization, monetization, and customer satisfaction research, consumer feedback of video games. The industry (economics), industry encompasses dozens of job disciplines and thousands of jobs worldwide. The video game industry has grown from niche to mainstream. , video games generated annually in global sales. In the US, the industry earned about in 2007, in 2008, and 2010, according to the Entertainment Software Association, ESA annual report. Research from Ampere Analysis indicated three points: the sector has consistently grown since at least 2015 and expanded 26% COVID-19 pandemic, from 2019 to 2021, to a record ; the global games and services market is forecast to shrink 1.2% annually to in 2022. The industry has i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanktics
''Tanktics: Computer Game of Armored Combat on the Eastern Front'' is a 1976 two-player tank battle computer wargame by Chris Crawford. It was Crawford's first video game. He initially self-published it as ''Wargy I''. It was published by Avalon Hill in 1981 as ''Tanktics''. The game has no graphics; the player moves tokens on a physical map to represent a tank battle, with the computer controlling one of the sides. The game received weak reviews by critics, who found the artificial intelligence to be weak and suited for players who wanted neither a complex nor fast-paced game. Gameplay The game simulates a two-player tank battle on a large hex grid. ''Tanktics'' has no graphics; the player moves tokens on a map using coordinates the computer, acting as referee, provided. Crawford used maps and tokens from Avalon Hill's '' Panzer Leader'' when developing the game. To compensate for the computer's weak artificial intelligence, he gave it twice as many tanks as the player and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chris Crawford (game Designer)
Christopher Crawford (born June 1, 1950) is an American video game designer and writer. Hired by Alan Kay to work at Atari, Inc., he wrote the computer wargame '' Eastern Front (1941)'' for Atari 8-bit computers which was sold through the Atari Program Exchange and later Atari's official product line. After leaving Atari, he wrote a string of games beginning with '' Balance of Power'' for Macintosh. Writing about the process of developing games, he became known among other creators in the nascent home computer game industry for his passionate advocacy of game design as an art form. He self-published '' The Journal of Computer Game Design'' and founded the Computer Game Developers Conference (later renamed to the Game Developers Conference). In 1992, Crawford withdrew from commercial game development and began experimenting with ideas for a next generation interactive storytelling system. In 2018, Crawford announced that he had halted his work on interactive storytelling, con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plane (mathematics)
In mathematics, a plane is a two-dimensional space or flat surface that extends indefinitely. A plane is the two-dimensional analogue of a point (zero dimensions), a line (one dimension) and three-dimensional space. When working exclusively in two-dimensional Euclidean space, the definite article is used, so ''the'' Euclidean plane refers to the whole space. Several notions of a plane may be defined. The Euclidean plane follows Euclidean geometry Euclidean geometry is a mathematical system attributed to ancient Greek mathematics, Greek mathematician Euclid, which he described in his textbook on geometry, ''Euclid's Elements, Elements''. Euclid's approach consists in assuming a small set ..., and in particular the parallel postulate. A projective plane may be constructed by adding "points at infinity" where two otherwise parallel lines would intersect, so that every pair of lines intersects in exactly one point. The elliptic plane may be further defined by adding a metr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
