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Optim: better way to manage offset for each wave rows

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Fabrice Ecaille
2013-11-28 18:39:54 +01:00
parent 28695298af
commit f040fc62cf
1 changed files with 13 additions and 5 deletions
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18
js/spaceinvaders-core.js
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@@ -30,11 +30,19 @@ Game = {
var row, col, wave = Game.wave.wave;
for (row = 0; row < wave.length; row = row + 1) {
var aliensRow = wave[row],
offset = (PLAYGROUND_WIDTH - ((aliensRow.length - 1) * 0.5 + aliensRow.length) * ALIENS_WIDTH) / 2;
for (col = 0; col < aliensRow.length; col = col + 1) {
Game.setAlien(col, row, col * wave.length + row, offset, aliensRow[col], Game.wave.move);
var alien_width_avg = 0,
aliens_row = wave[row],
offset = 0;
for (col = 0; col < aliens_row.length; col = col + 1) {
alien_width_avg = alien_width_avg + aliens_row[col].animation.width;
}
alien_width_avg = alien_width_avg / aliens_row.length;
offset = (PLAYGROUND_WIDTH - (aliens_row.length * 1.5 - 0.5) * alien_width_avg) / 2;
for (col = 0; col < aliens_row.length; col = col + 1) {
Game.setAlien(col, row, col * wave.length + row, offset, aliens_row[col], Game.wave.move);
}
}