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annotate AdvTiledLoader/Object.lua @ 48:eeb43b94f625 default tip

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merge
author Makdaam
date Sun, 16 Dec 2012 19:50:44 +0100
parents 0c46edeabad6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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2
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1 ---------------------------------------------------------------------------------------------------
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2 -- -= Object =-
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3 ---------------------------------------------------------------------------------------------------
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4 -- Setup
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5 local Object = {class = "Object"}
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6 Object.__index = Object
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7
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8 ---------------------------------------------------------------------------------------------------
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9
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10 -- Returns a new Object
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11 function Object:new(layer, name, type, x, y, width, height, gid, prop)
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12
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13 -- Public:
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14 local obj = setmetatable({}, Object)
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15 obj.layer = layer -- The layer that the object belongs to
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16 obj.name = name or "" -- Name of the object
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17 obj.type = type or "" -- Type of the object
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18 obj.x = x or 0 -- X location on the map
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19 obj.y = y or 0 -- Y location on the map
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20 obj.width = width or 0 -- Object width in tiles
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21 obj.height = height or 0 -- Object height in tiles
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22 obj.gid = gid -- The object's associated tile. If false an outline will be drawn.
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23 obj.visible = true -- If false then the object will not be drawn
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24 obj.properties = prop or {} -- Properties set by tiled.
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25 obj.polygon = nil -- Polygon points. Set by the Loader if defined in Tiled.
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26 obj.polyline = nil -- Polyline points. Set by the Loader if defined in Tiled.
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27
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28 -- drawInfo stores values needed to actually draw the object. You can either set these yourself
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29 -- or use updateDrawInfo to do it automatically.
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30 obj.drawInfo = {
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31
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32 -- x and y are the drawing location of the object. This is different than the object's x and
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33 -- y value which is the object's placement on the map.
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34 x = 0, -- The x draw location
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35 y = 0, -- The y draw location
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36
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37 -- These limit the drawing of the object. If the object falls out of the bounds of
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38 -- the map's drawRange then the object will not be drawn.
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39 left = 0, -- The leftmost point on the object
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40 right = 0, -- The rightmost point on the object
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41 top = 0, -- The highest point on the object
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42 bottom = 0, -- The lowest point on the object
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43
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44 -- The order to draw the object in relation to other objects. Usually equal to bottom.
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45 order = 0,
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46
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47 -- In addition to this, other drawing information can be stored in the numerical
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48 -- indicies which is context sensitive to the map's orientation, if the object has a gid, or
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49 -- of the object is a polygon or polyline object.
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50 }
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51
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52 -- Update the draw info
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53 Object.updateDrawInfo(obj)
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54
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55 -- Return our object
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56 return obj
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57 end
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58
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59 ---------------------------------------------------------------------------------------------------
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60 -- Updates the draw information. Call this every time the object moves or changes size.
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61 function Object:updateDrawInfo()
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62 local di = self.drawInfo
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63 local map = self.layer.map
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64
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65 if self.polygon or self.polyline then
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66 -- Reset the draw info
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67 self.drawInfo = {}
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68 di = self.drawInfo
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69 -- Set the box to the first vertex
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70 local vertexes = self.polygon or self.polyline
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71 -- Create the draw information for each vertex
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72 for k,v in ipairs(vertexes) do
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73 if k%2 == 1 then
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74 if map.orientation == "isometric" then
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75 di[k], di[k+1] = map:fromIso(self.x+vertexes[k], self.y+vertexes[k+1])
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76 else
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77 di[k], di[k+1] = self.x+vertexes[k], self.y+vertexes[k+1]
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78 end
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79 di[k], di[k+1] = di[k] - map.offsetX, di[k+1] - map.offsetY
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80 end
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81 end
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82 -- Set the start draw location
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83 di.x, di.y = di[1], di[2]
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84 -- Prime the bounds
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85 di.left, di.right, di.top, di.bottom = di.x, di.x, di.y, di.y
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86 -- Go through each vertex and find the highest and lowest values for the bounds.
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87 for k,v in ipairs(di) do
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88 -- if it's odd then it's an x value
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89 if k%2 == 1 then
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90 if v < di.left then di.left = v end
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91 if v > di.right then di.right = v end
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92 -- if it's even it's a y value
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93 else
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94 if v < di.top then di.top = v end
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95 if v > di.bottom then di.bottom = v end
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96 end
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97 end
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98 di.order = di.bottom
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99
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100 -- Isometric map
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101 elseif map.orientation == "isometric" then
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102 -- Is a tile object
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103 if self.gid then
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104 local t = map.tiles[self.gid]
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105 local tw, th = t.width, t.height
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106 di.x, di.y = map:fromIso(self.x, self.y)
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107 di.x, di.y = di.x - map.offsetX, di.y - map.offsetY
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108 di.order = di.y
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109 di.x, di.y = di.x - map.tileWidth/2, di.y - th
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110 di.left, di.right, di.top, di.bottom = di.x, di.x+tw, di.y , di.y +th
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111 -- Is not a tile object
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112 else
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113 di[1], di[2] = map:fromIso(self.x, self.y)
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114 di[3], di[4] = map:fromIso(self.x + self.width, self.y)
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115 di[5], di[6] = map:fromIso(self.x + self.width, self.y + self.height)
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116 di[7], di[8] = map:fromIso(self.x, self.y + self.height)
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117 for i =1,7,2 do
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118 di[i] = di[i] - map.offsetX
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119 di[i+1] = di[i+1] - map.offsetY
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120 end
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121 di.left, di.right, di.top, di.bottom = di[7], di[3], di[2], di[6]
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122 di.order = 1
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123 end
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124
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125 -- Orthogonal map
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126 else
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127 -- Is a tile object
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128 if self.gid then
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129 local t = map.tiles[self.gid]
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130 local tw, th = t.width, t.height
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131 di.x, di.y = self.x - map.offsetX, self.y - map.offsetY
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132 di.order = di.y
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133 di.y = di.y - th
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134 di.left, di.top, di.right, di.bottom = di.x, di.y, di.x+tw, di.y+th
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135 -- Is not a tile object
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136 else
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137 di.x, di.y = self.x - map.offsetX, self.y - map.offsetY
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138 di[1], di[2] = di.x, di.y
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139 di[3], di[4] = self.width > 20 and self.width or 20, self.height > 20 and self.height or 20
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140 di.left, di.top, di.right, di.bottom = di.x, di.y , di.x+di[3], di.y +di[4]
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141 di.order = 1
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142 end
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143 end
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144 end
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145
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146 ---------------------------------------------------------------------------------------------------
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147 -- Draw the object. The passed color is the color of the object layer the object belongs to.
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148 function Object:draw(x, y, r, g, b, a)
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149
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150 if not self.visible then return end
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151
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152 local di = self.drawInfo
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153 love.graphics.setLineWidth(2)
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154
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155 -- The object is a polyline.
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156 if self.polyline then
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157 love.graphics.push()
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158 love.graphics.translate(0,1)
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159 love.graphics.setColor(0, 0, 0, a)
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160 love.graphics.line( unpack(di) )
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161 love.graphics.pop()
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162 love.graphics.setColor(r, g, b, a)
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163 love.graphics.line( unpack(di) )
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164
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165 -- The object is a polygon.
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166 elseif self.polygon then
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167 love.graphics.push()
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168 love.graphics.translate(0,1)
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169 love.graphics.setColor(0, 0, 0, a)
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170 love.graphics.polygon( "line", unpack(di) )
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171 love.graphics.pop()
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172 love.graphics.setColor(r,g,b,a)
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173 love.graphics.polygon( "line", unpack(di) )
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174
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175 -- The object is a tile object. Draw the tile.
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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176 elseif self.gid then
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177 local tile = self.layer.map.tiles[self.gid]
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178 tile:draw(di.x, di.y - tile.height)
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179
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180 -- Map is isometric. Draw a parallelogram.
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181 elseif self.layer.map.orientation == "isometric" then
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182 love.graphics.setColor(r, g, b, a/5)
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183 love.graphics.polygon("fill", unpack(di))
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184
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185 love.graphics.push()
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186 love.graphics.translate(0,1)
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187 love.graphics.setColor(0, 0, 0, a)
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188 love.graphics.polygon("line", unpack(di))
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189 love.graphics.pop()
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190
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191 love.graphics.setColor(r,g,b,a)
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192 love.graphics.polygon("line", unpack(di))
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193
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194 -- Map is orthogonal. Draw a rectangle.
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195 else
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196 love.graphics.setColor(r, g, b, a/5)
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197 love.graphics.rectangle("fill", unpack(di))
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198
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199 love.graphics.setColor(0, 0, 0, a)
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200 love.graphics.push()
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201 love.graphics.translate(1,1)
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202 love.graphics.rectangle("line", unpack(di))
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203 love.graphics.print(self.name, di.x, di.y-20)
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204 love.graphics.pop()
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205
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206 love.graphics.setColor(r,g,b,a)
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207 love.graphics.rectangle("line", unpack(di))
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208 love.graphics.print(self.name, di.x, di.y-20)
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209 end
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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210 end
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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211
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212 ---------------------------------------------------------------------------------------------------
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213 -- Returns the Object class
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214 return Object
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215
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216
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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217 --[[Copyright (c) 2011-2012 Casey Baxter
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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218
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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219 Permission is hereby granted, free of charge, to any person obtaining a copy
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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220 of this software and associated documentation files (the "Software"), to deal
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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221 in the Software without restriction, including without limitation the rights
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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222 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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223 copies of the Software, and to permit persons to whom the Software is
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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224 furnished to do so, subject to the following conditions:
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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225
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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226 The above copyright notice and this permission notice shall be included in
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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227 all copies or substantial portions of the Software.
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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228
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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229 Except as contained in this notice, the name(s) of the above copyright holders
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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230 shall not be used in advertising or otherwise to promote the sale, use or
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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231 other dealings in this Software without prior written authorization.
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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232
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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233 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
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234 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
parents:
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235 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
parents:
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236 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
parents:
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237 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
parents:
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238 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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Radomir Dopieralski <sheep-devel@sheep.art.pl>
parents:
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239 THE SOFTWARE.--]]