laser mod

mod: stimulated emission - 8% chance to duplicate power ups
laser mod: diffuse beam - laser is wide but doesn't reflect, 150% damage and energy drain

js/game.js

@@ -978,6 +978,43 @@ const game = {
       }
       ctx.globalAlpha = 1;
     },
+    powerUpBonus() { //draws crackle effect for bonus power ups
+      for (let i = 0, len = powerUp.length; i < len; ++i) {
+        ctx.globalAlpha = 0.4 * Math.sin(mech.cycle * 0.15) + 0.6;
+        for (let i = 0, len = powerUp.length; i < len; ++i) {
+          ctx.beginPath();
+          ctx.arc(powerUp[i].position.x, powerUp[i].position.y, powerUp[i].size, 0, 2 * Math.PI);
+          ctx.fillStyle = powerUp[i].color;
+          ctx.fill();
+        }
+        ctx.globalAlpha = 1;
+
+        if (powerUp[i].isBonus && Math.random() < 0.1) {
+          //draw electricity
+          const mag = 5 + powerUp[i].size / 5
+          let unit = Vector.rotate({
+            x: mag,
+            y: mag
+          }, 2 * Math.PI * Math.random())
+          let path = {
+            x: powerUp[i].position.x + unit.x,
+            y: powerUp[i].position.y + unit.y
+          }
+          ctx.beginPath();
+          ctx.moveTo(path.x, path.y);
+          for (let i = 0; i < 6; i++) {
+            unit = Vector.rotate(unit, 3 * (Math.random() - 0.5))
+            path = Vector.add(path, unit)
+            ctx.lineTo(path.x, path.y);
+          }
+          ctx.lineWidth = 0.5 + 2 * Math.random();
+          ctx.strokeStyle = "#000"
+          ctx.stroke();
+        }
+      }
+      // ctx.globalAlpha = 1;
+    },
+
     // map: function() {
     //     ctx.beginPath();
     //     for (let i = 0, len = map.length; i < len; ++i) {