CODEWITHSUNDEEP
javamathcoordinatesdistanceeuclidean-distance
user3407039
user3407039

Reputation: 1335

Calculating the distance between two squares on a grid - Java

I am creating a game in Java and have a grid of squares that make up the playable area. The player has certain targets and I need to work out how far away the player is from those targets using the x an y coordinate values of the squares. So if the player was on cell 1,1 I would need to know that it was 2 squares away (2 movement inputs) from cell 2,2 - you cannot move diagonally.

I found Euclidean distance formula but I'm unsure about how to convert this to Java and it doesn't take into account that I can't move diagonally so I'm not sure if this is even applicable.

Is there some simple formula that I am missing? I couldn't seem to find one. Thanks.

Upvotes: 0

Views: 2628

Answers (1)

Criticize SE actions means ban
Criticize SE actions means ban

Reputation: 58858

Yes, there is a simple formula: Math.abs(x1 - x2) + Math.abs(y1 - y2)

Math.abs is the absolute value function - if the argument is a positive number then it returns that; otherwise it returns the corresponding positive number (so Math.abs(-5) returns 5)

Upvotes: 7

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