116 lines
2.7 KiB
ReStructuredText
116 lines
2.7 KiB
ReStructuredText
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.. HC documentation master file, created by
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sphinx-quickstart on Thu Oct 8 20:31:43 2015.
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You can adapt this file completely to your liking, but it should at least
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contain the root `toctree` directive.
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HC - General purpose collision detection with LÖVE_
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===================================================
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HC is a Lua module to simplify one important aspect in computer games:
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Collision detection.
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It can detect collisions between arbitrary positioned and rotated shapes.
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Built-in shapes are points, circles and polygons.
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Any non-intersecting polygons are supported, even concave ones.
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You can add other types of shapes if you need them.
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The main interface is simple:
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1. Set up your scene,
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2. Check for collisions,
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3. React to collisions.
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First steps
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-----------
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This is an example on how to use HC. One shape will stick to the mouse
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position, while the other will stay in the same place::
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HC = require 'HC'
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-- array to hold collision messages
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local text = {}
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function love.load()
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-- add a rectangle to the scene
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rect = HC.rectangle(200,400,400,20)
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-- add a circle to the scene
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mouse = HC.circle(400,300,20)
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mouse:moveTo(love.mouse.getPosition())
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end
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function love.update(dt)
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-- move circle to mouse position
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mouse:moveTo(love.mouse.getPosition())
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-- rotate rectangle
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rect:rotate(dt)
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-- check for collisions
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for shape, delta in pairs(HC.collisions(mouse)) do
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text[#text+1] = string.format("Colliding. Separating vector = (%s,%s)",
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delta.x, delta.y)
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end
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while #text > 40 do
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table.remove(text, 1)
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end
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end
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function love.draw()
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-- print messages
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for i = 1,#text do
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love.graphics.setColor(255,255,255, 255 - (i-1) * 6)
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love.graphics.print(text[#text - (i-1)], 10, i * 15)
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end
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-- shapes can be drawn to the screen
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love.graphics.setColor(255,255,255)
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rect:draw('fill')
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mouse:draw('fill')
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end
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Get HC
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------
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You can download the latest packaged version as `zip <https://github.com/vrld/HC/zipball/master>`_- or `tar <https://github.com/vrld/HC/tarball/master>`_-archive directly
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from github_.
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You can also have a look at the sourcecode online `here <http://github.com/vrld/HC>`_.
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If you use the Git command line client, you can clone the repository by
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running::
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git clone git://github.com/vrld/HC.git
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Once done, you can check for updates by running::
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git pull
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from inside the directory.
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Read on
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-------
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.. toctree::
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:maxdepth: 2
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reference
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tutorial
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license
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Indices and tables
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^^^^^^^^^^^^^^^^^^
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* :ref:`genindex`
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* :ref:`modindex`
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* :ref:`search`
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.. _LÖVE: http://love2d.org
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.. _github: https://github.com
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