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Du Mhan Yhu

Thing Placement Problem

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It may be stuck in a wall.

Representing items as circles is inaccurate. Things are square in Doom, and Doom Builder has an option to draw them as squares.

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Well, things in Doom aren't circles. If you draw a square around that circle you will see that it is partially in the wall.

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Even if your monster has just enough space to NOT be stuck in a wall in its initial position, you haven't won yet. The problem is, every monster makes steps of a certain length in map units. Mostly it's 8 units, Revenants and Pinkies do 10-unit steps, Arachnotrons and Masterminds have 12-unit steps, Archviles have 15-unit steps and Cyberdemons 16-unit. The step length are exact - that means, every time the monster makes a step, it moves its entire body exactly as many units as their step length is, in one of the main 8 cardinal directions. They can't do smaller steps even if they approach an obstacle - in that case, they need to cancel the whole movement in that particular direction and have to choose another direction where their fixed-length step will fully succeed. If there's no such a direction out of the 8, monster becomes stuck. Therefore you need to give each monster enough space to walk, not just to stand in its exactly fitting small room.

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Da Werecat said:

Things are square in Doom, and Doom Builder has an option to draw them as squares.


I really would like to know why that's not the default.

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