Drawing the landscape: tileShapeColour

       Name: tileShapeColour                                         [Show more]
       Type: Variable
   Category: Drawing the landscape
    Summary: Tile colours by shape and the orientation of the viewer
    Context: See this variable in context in the source code
 References: This variable is used as follows:
             * DrawOneFaceTile uses tileShapeColour
             * DrawTwoFaceTile uses tileShapeColour


 The colours shown in the comments below are for landscape 0000, which has the
 following palette:

   * Colour 0 = blue

   * Colour 1 = black

   * Colour 2 = white

   * Colour 3 = green

 Colours 2 and 3 can be altered depending on the context (for gameplay, the
 palette changes depending on the number of enemies, for example). The range of
 colours is as follows:

   * Colour 2 can be white, yellow, cyan or red

   * Colour 3 can be green, red, yellow or cyan

 Note that all the tiles have an edge colour of 0 (blue) apart from the first
 one, which has an edge colour of colour 3 (green, red, yellow or cyan) to
 match the fill colour.


.tileShapeColour

                        \ Colours for the first face in a two-face tile, or the
                        \ only face in a one-face tile

 EQUB 3 << 2 + 3 << 4   \ Shape  0: fill colour 3 (green), edge colour 3 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape  1: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape  2: fill colour 1 (black), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  3: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  4: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  5: fill colour 2 (white), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape  6: fill colour 1 (black), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  7: fill colour 2 (white), edge colour 0 (blue)
 EQUB 0 << 2 + 0 << 4   \ Shape  8 = unused
 EQUB 1 << 2 + 0 << 4   \ Shape  9: fill colour 1 (black), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape 10: fill colour 2 (white), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 11: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 12: fill colour 1 (black), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape 13: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape 14: fill colour 2 (white), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 15: fill colour 1 (black), edge colour 0 (blue)

                        \ Colours for the second face in a two-face tile

 EQUB 0 << 2 + 0 << 4   \ Shape  0: fill colour 3 (green), edge colour 0 (blue)
 EQUB 0 << 2 + 0 << 4   \ Shape  1: fill colour 1 (black), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  2: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape  3: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  4: fill colour 2 (white), edge colour 0 (blue)
 EQUB 0 << 2 + 0 << 4   \ Shape  5: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape  6: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape  7: fill colour 2 (white), edge colour 0 (blue)
 EQUB 0 << 2 + 0 << 4   \ Shape  8 = unused
 EQUB 0 << 2 + 0 << 4   \ Shape  9: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 10: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape 11: fill colour 1 (black), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 12: fill colour 1 (black), edge colour 0 (blue)
 EQUB 0 << 2 + 0 << 4   \ Shape 13: fill colour 2 (white), edge colour 0 (blue)
 EQUB 1 << 2 + 0 << 4   \ Shape 14: fill colour 2 (white), edge colour 0 (blue)
 EQUB 2 << 2 + 0 << 4   \ Shape 15: fill colour 1 (black), edge colour 0 (blue)