v1.4.4

assets/devel/objects/movingplatforms/movingplatform.lua

@@ -0,0 +1,72 @@
+require "/scripts/vec2.lua"
+require "/scripts/poly.lua"
+
+function init()
+  self.cycle = 0
+  self.dir = 0
+  self.platformStart = config.getParameter("platformStart")
+  self.platformEnd = config.getParameter("platformEnd")
+  self.platformMoveTime = config.getParameter("platformMoveTime")
+end
+
+function getMode()
+  if not object.isInputNodeConnected(0) then
+    return "bounce"
+  elseif object.getInputNodeLevel(0) then
+    return "toend"
+  else
+    return "tostart"
+  end
+end
+
+function update()
+  local mode = getMode()
+
+  local cycle = self.cycle
+  local dir = self.dir
+
+  if mode == "tostart" then
+    if cycle > 0.0 then
+      dir = -1
+    else
+      dir = 0
+    end
+  elseif mode == "toend" then
+    if cycle < 1.0 then
+      dir = 1
+    else
+      dir = 0
+    end
+  else
+    if dir == 0 then
+      dir = 1
+    end
+
+    if cycle == 1.0 then
+      dir = -1
+    elseif cycle == 0.0 then
+      dir = 1
+    end
+  end
+
+  cycle = cycle + script.updateDt() / self.platformMoveTime * self.dir
+  cycle = math.min(math.max(cycle, 0.0), 1.0)
+
+  if dir == 0 then
+    animator.setAnimationState("moving", "off")
+  else
+    animator.setAnimationState("moving", "on")
+  end
+
+  local pos = vec2.add(vec2.mul(self.platformStart, 1.0 - cycle), vec2.mul(self.platformEnd, cycle))
+  physics.setCollisionPosition("platform", pos)
+  animator.resetTransformationGroup("platform")
+  animator.translateTransformationGroup("platform", pos)
+
+  if dir ~= self.dir then
+    animator.playSound("changeDir")
+  end
+
+  self.cycle = cycle
+  self.dir = dir
+end