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David96 2020-12-31 12:32:40 +01:00
parent 47f5dcaddc
commit 7ae37becba
1 changed files with 8 additions and 0 deletions
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8
Welt.java
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@ -35,7 +35,11 @@ class Welt implements Drawable
ArrayList<Rectangle> remove = new ArrayList<Rectangle>(); ArrayList<Rectangle> remove = new ArrayList<Rectangle>();
for (Rectangle r : _obstacles) for (Rectangle r : _obstacles)
{ {
// Move all obstacles accoring to speed
r.setPos(r.getX() - (elapsed * 1e-3 * _speed), r.getY()); r.setPos(r.getX() - (elapsed * 1e-3 * _speed), r.getY());
// Mark obstacles that are off screen for removal to avoid
// concurrent modifications
if (r.getX() < -r.getWidth()) if (r.getX() < -r.getWidth())
{ {
remove.add(r); remove.add(r);
@ -45,11 +49,15 @@ class Welt implements Drawable
{ {
_obstacles.remove(r); _obstacles.remove(r);
} }
// Add a new obstacle after DISTANCE
Rectangle lastObstacle = _obstacles.get(_obstacles.size() - 1); Rectangle lastObstacle = _obstacles.get(_obstacles.size() - 1);
if (lastObstacle.getX() + lastObstacle.getWidth() < TurtleWelt.WIDTH - DISTANCE) if (lastObstacle.getX() + lastObstacle.getWidth() < TurtleWelt.WIDTH - DISTANCE)
{ {
createObstacle(TurtleWelt.WIDTH); createObstacle(TurtleWelt.WIDTH);
} }
// Increase speed according to acceleration
_speed += _acc * elapsed * 1e-3; _speed += _acc * elapsed * 1e-3;
} }