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[solved] How to exlude collision detection with a certain shape in HC (hardon collider)
Posted: Mon Jan 08, 2018 12:14 pm
by 4aiman
Sorry if this has been answered over and over again, but the search here just won't obey...
Right now Ii'm using this
Code: Select all
for shape, delta in pairs(game.world:collisions(bullet.hco)) do
if shape~=game.player.body then
del[#del+1] = i break
end
end
to detect whether I should/shouldn't delete a shape.
- game.world is a HC instance
- bullet.hco stores the game.world:point() result
- game.player.body is the result of game.world:circle() and keeps tabs on the player.
I can't seem to figure out how to exclude a certain shape (immortal object or an owner of the bullet). The code above (obviously) doesn't work.
So... How can I tell a shape to ignore collisions with some particular object?
Thanks in advance!
Re: How to exlude collision detection with a certain shape in HC (hardon collider)
Posted: Mon Jan 08, 2018 8:19 pm
by Ostego160
HC is such a lovely library, there's a couple ways to do it. Here's how I do it:
I have an
ignore variable stored on each object in the world; each object in a table. Here we iterate through enemies.
Code: Select all
for i=1,#enemies do
local candidates = collider:neighbors(enemies[i].mask) --Mask is a reference to the HC shape
for other in pairs(candidates) do
local collides, dx, dy = enemies[i].mask:collidesWith(other) --Get the boolean event, and the collision resolution data
if collides and not other.ignore then --THIS IS WHAT YOU WANT, the check on other to ignore
if other.type == 'static' or other.type == 'character' then --Other additional checks
enemies[i].mask:move(dx,dy) --Collision Resolution
elseif other.type == 'debris' then
other:move(-dx,-dy)
end
end
end
end
Hope this helps my friend.
Re: How to exlude collision detection with a certain shape in HC (hardon collider)
Posted: Thu Jan 11, 2018 8:07 am
by 4aiman
Thanks!
It turned out I had a typo somewhere, since after I unified all the names (now every object has hco property with a reference to HC shape) my code worked as well as yours!
Cheers! ^_^