implement LightBehavior:animateColor

(to show that animations do work, actually)

lib/character/behaviors/light.lua

@@ -2,6 +2,9 @@
 --- @field intensity number
 --- @field color Vec3
 --- @field seed integer
+--- @field colorAnimationNode? AnimationNode
+--- @field targetColor? Vec3
+--- @field sourceColor? Vec3
 local behavior = {}
 behavior.__index = behavior
 behavior.id = "light"
@@ -16,7 +19,18 @@ function behavior.new(values)
     }, behavior)
 end
 
-function behavior:update()
+function behavior:update(dt)
+    if not self.colorAnimationNode then return end
+    local delta = self.targetColor - self.sourceColor
+    self.color = self.sourceColor + delta * self.colorAnimationNode:getValue()
+    self.colorAnimationNode:update(dt)
+end
+
+function behavior:animateColor(targetColor, animationNode)
+    if self.colorAnimationNode then self.colorAnimationNode:finish() end
+    self.colorAnimationNode = animationNode
+    self.sourceColor = self.color
+    self.targetColor = targetColor
 end
 
 function behavior:draw()

lib/spellbook.lua

@@ -107,9 +107,10 @@ function regenerateMana:cast(caster, target)
 
     AnimationNode {
         function(node)
-            light:has(Tree.behaviors.residentsleeper):sleep(node)
+            light:has(Tree.behaviors.light):animateColor(Vec3 {}, node)
         end,
-        duration = 400,
+        easing = easing.easeInQuad,
+        duration = 800,
         onEnd = function() light:die() end
     }:run()