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Adds speed boost power up to demo game

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This commit is contained in:
Viktor Lidholt 2015-09-02 15:14:22 -07:00
parent fff9642196
commit edbf5b7391
3 changed files with 28 additions and 7 deletions
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9
examples/game/lib/game_demo_node.dart
View File

@ -80,7 +80,6 @@ class GameDemoNode extends NodeWithSize {
PlayerState _playerState;
// Game properties
double _scrollSpeed = 2.0;
double _scroll = 0.0;
int _framesToFire = 0;
@ -95,11 +94,11 @@ class GameDemoNode extends NodeWithSize {
void update(double dt) {
// Scroll the level
_scroll = _level.scroll(_scrollSpeed);
_starField.move(0.0, _scrollSpeed);
_scroll = _level.scroll(_playerState.scrollSpeed);
_starField.move(0.0, _playerState.scrollSpeed);
_background.move(_scrollSpeed * 0.1);
_nebula.move(_scrollSpeed);
_background.move(_playerState.scrollSpeed * 0.1);
_nebula.move(_playerState.scrollSpeed);
// Add objects
addObjects();

1
examples/game/lib/game_objects.dart
View File

@ -462,6 +462,7 @@ enum PowerUpType {
shield,
speedLaser,
sideLaser,
speedBoost,
}
List<PowerUpType> _powerUpTypes = new List.from(PowerUpType.values);

25
examples/game/lib/player_state.dart
View File

@ -30,6 +30,12 @@ class PlayerState extends Node {
int laserLevel = 0;
static const double normalScrollSpeed = 2.0;
double scrollSpeed = normalScrollSpeed;
double _scrollSpeedTarget = normalScrollSpeed;
Sprite _sprtBgScore;
ScoreDisplay _scoreDisplay;
Sprite _sprtBgCoins;
@ -80,12 +86,15 @@ class PlayerState extends Node {
_sideLaserFrames += 300;
} else if (type == PowerUpType.speedLaser) {
_speedLaserFrames += 300;
} else if (type == PowerUpType.speedBoost) {
_speedBoostFrames += 300;
}
}
int _shieldFrames = 0;
bool get shieldActive => _shieldFrames > 0;
bool get shieldDeactivating => _shieldFrames > 0 && _shieldFrames < 60;
bool get shieldActive => _shieldFrames > 0 || _speedBoostFrames > 0;
bool get shieldDeactivating =>
math.max(_shieldFrames, _speedBoostFrames) > 0 && math.max(_shieldFrames, _speedBoostFrames) < 60;
int _sideLaserFrames = 0;
bool get sideLaserActive => _sideLaserFrames > 0;
@ -93,6 +102,9 @@ class PlayerState extends Node {
int _speedLaserFrames = 0;
bool get speedLaserActive => _speedLaserFrames > 0;
int _speedBoostFrames = 0;
bool get speedBoostActive => _speedBoostFrames > 0;
void flashBgSprite(Sprite sprt) {
sprt.actions.stopAll();
ActionTween flash = new ActionTween(
@ -107,6 +119,15 @@ class PlayerState extends Node {
if (_shieldFrames > 0) _shieldFrames--;
if (_sideLaserFrames > 0) _sideLaserFrames--;
if (_speedLaserFrames > 0) _speedLaserFrames--;
if (_speedBoostFrames > 0) _speedBoostFrames--;
// Update speed
if (speedBoostActive)
_scrollSpeedTarget = normalScrollSpeed * 6.0;
else
_scrollSpeedTarget = normalScrollSpeed;
scrollSpeed = GameMath.filter(scrollSpeed, _scrollSpeedTarget, 0.1);
}
}