107 lines
2.7 KiB
Lua
107 lines
2.7 KiB
Lua
require "config"
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-- Game grid table, acts as "global level" of some sort
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---@class Grid
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---@field lines Line[]
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---@field size Point
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Grid = {
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lines = {},
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size = Point:new( Point:coords() )
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}
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-- Factory function
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---@param size Point
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---@returns Grid
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function Grid:new( size )
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local grid = {
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lines = {},
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size = size
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}
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setmetatable( grid, { __index = self } )
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return grid
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end
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-- Add new line to grid
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---@param line Line
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function Grid:push( line )
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table.insert( self.lines, line )
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end
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-- Draw lines and the whole grid
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function Grid:draw()
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-- Draw grid
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for x = 1, self.size.x do-- Draw lines
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for _, line in ipairs( self.lines ) do
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line:draw()
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end
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for y = 1, self.size.y do
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local px, py = x * Config.cellSize, y * Config.cellSize
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love.graphics.circle( "fill", px - Config.cellSize / 2, py - Config.cellSize / 2, Config.pointRadius)
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end
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end
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-- Draw lines
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for _, line in ipairs( self.lines ) do
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line:draw()
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end
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end
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-- Check all lines and return one, which contains point (if any)
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-- TODO: rewrite this function to extract clear/reverse behavior
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---@param point Point
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---@param ignoreEnd boolean
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function Grid:matchesLine( point, ignoreEnd )
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local line = self.lines[TableFind( self.lines, point,
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function( value, innervalue )
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return innervalue:has( value )
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end
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)]
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if line ~= nil and not ignoreEnd then
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if line.startpoint:equals( point ) then
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line:clear()
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line:push( line.startpoint )
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end
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if line.endpoint:equals( point ) then
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line:clear()
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line:reverse()
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return line
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end
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end
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-- Try to check endpoint
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if line == nil and not ignoreEnd then
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line = self.lines[TableFind( self.lines, point,
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function( value, innervalue )
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if innervalue.endpoint:equals( value ) then
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innervalue:clear()
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innervalue:reverse()
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return true
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end
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return false
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end
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)]
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end
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return line
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end
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-- Checks if specified point does belong to any line endpoint but not specified line
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---@param line Line
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---@param point GridPoint
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---@return boolean
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function Grid:isOtherEndpoint( line, point )
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return TableHas( self.lines, { line=line, point=point }, function( value, innervalue )
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return innervalue ~= value.line and innervalue.endpoint:equals( value.point )
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end
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)
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end
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-- Checks if point is in grid bounds
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---@param point GridPoint
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---@return boolean
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function Grid:inBounds( point )
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return point.x <= self.size.x and point.y <= self.size.y
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end
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