Dev Log #13.Unlucky for some, but not for me!
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Collision resolution finally working!!!!
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Here’s how it works:
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SAT algorithm returns the axis with the smallest overlap (this is the shortest distance to separate the player and the tile).
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Correct normal line direction so that it points from the tile to the player.
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Move player across MTV (Minimum Translation Vector), pushing player out of the tile. Note: MTV is calculated by choosing the smallest overlap in the direction that moves the two shapes apart.
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Remove velocity that is parallel to the collision surface, allowing the object to glide across it without getting stuck.
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That’s the jist of it. There are some other things I didn’t include, like how only polygons are made for tiles touching the player’s polygon/rect, but I discussed this in a past dev log.
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In all honesty, I don’t fully understand the maths behind it, but I was still able to make my own SAT collision system, so I obviously know enough.
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Also added some smaller things like a bullet limit and a restart caused by holding the R button down.
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This is good progress and should allow me to add more easily things like level select, new Tiled maps, new tile variants that cause different effects, etc.
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Next dev log is going to be packed with stuff!!!!.See you then (;