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Remove vmult lookup tables

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There's really no need to put the y-multiplication in a lookup table.
The compiler will optimize the multiplication better than putting it in
a lookup table will.

To improve readability and to hardcode things less, the new
SCREEN_WIDTH_TILES and SCREEN_HEIGHT_TILES constant names are used, as
well as adding a new TILE_IDX macro to calculate the index of a tile in
a concatenated-rows (row-major in formal parlance) array. Also, tile
numbers are stored in a temporary variable to improve readability as
well (no more copy-pasting `contents[i + vmult[j]]` over and over
again).
This commit is contained in:
Misa
2021-09-24 16:37:27 -07:00
parent 491f3732aa
commit 6192269128
8 changed files with 64 additions and 64 deletions
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2
desktop_version/src/Constants.h
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@@ -12,6 +12,8 @@
#define SCREEN_WIDTH_PIXELS (SCREEN_WIDTH_TILES * 8)
#define SCREEN_HEIGHT_PIXELS (SCREEN_WIDTH_TILES * 8)
#define TILE_IDX(x, y) (x + y * SCREEN_WIDTH_TILES)
/* 4 bytes per char, for UTF-8 encoding. */
#define SCREEN_WIDTH_CHARS (SCREEN_WIDTH_TILES * 4)