Reuse same tween for monster shaking

[ld40.git] / ld40.js

diff --git a/ld40.js b/ld40.js
index e981a9ef0768c78a6868a9e8c0ffdbae3f066660..7bf03d71da756c446f15d2f52cc77f4de7abcdbe 100644 (file)
--- a/ld40.js
+++ b/ld40.js
@@ -32,6 +32,9 @@
             }
         }, false);
 
+        function sign(n) {
+            if (n >= 0) { return 1 } else { return -1 };
+        }
 
         class Player extends Phaser.Text {
             constructor(x, y) {
@@ -155,12 +158,18 @@
                 this.weapon = new JusticeBlaster(game, this);
                 this.weapon.bulletSpeed = SPEED_MPROJECTILE;
                 this.weapon.trackSprite(this);
+                this.shaketween = game.add.tween(this).to({ x: this.x + (sign(Math.random() - 0.5)) * 5 }, 10, Phaser.Easing.Sinusoidal.InOut, false, 0, 8, true);
             }
 
             enablePhysics() {
                 game.physics.arcade.enable(this);
             }
 
+            damage(amount) {
+                super.damage(amount);
+                if (this.alive) { this.shaketween.start(); }
+            }
+
             kill() {
                 super.kill();
                 player.loveUp();