v1.4.4

assets/devel/items/active/weapons/ranged/guidedrocketlauncher/guidedrocketlauncher.lua

@@ -0,0 +1,108 @@
+require "/scripts/vec2.lua"
+
+function init()
+  -- scale damage and calculate energy cost
+  self.pType = config.getParameter("projectileType")
+  self.pParams = config.getParameter("projectileParameters", {})
+  if not self.pParams.power then
+    local projectileConfig = root.projectileConfig(self.pType)
+    self.pParams.power = projectileConfig.power
+  end
+  self.pParams.power = self.pParams.power * root.evalFunction("weaponDamageLevelMultiplier", config.getParameter("level", 1))
+  self.energyPerShot = 3 * self.pParams.power
+
+  self.fireOffset = config.getParameter("fireOffset")
+  updateAim()
+
+  storage.fireTimer = storage.fireTimer or 0
+  self.recoilTimer = 0
+
+  animator.setAnimationRate(1 / config.getParameter("fireTime", 1.0))
+
+  self.activeRockets = {}
+  updateCursor()
+end
+
+function update(dt, fireMode, shiftHeld)
+  updateAim()
+
+  storage.fireTimer = math.max(storage.fireTimer - dt, 0)
+  self.recoilTimer = math.max(self.recoilTimer - dt, 0)
+
+  if fireMode ~= "none"
+      and storage.fireTimer <= 0
+      and not world.pointTileCollision(firePosition())
+      and status.overConsumeResource("energy", self.energyPerShot) then
+
+    storage.fireTimer = config.getParameter("fireTime", 1.0)
+    fire()
+  end
+
+  activeItem.setRecoil(self.recoilTimer > 0)
+
+  updateRockets()
+  updateCursor()
+end
+
+function updateCursor()
+  if #self.activeRockets > 0 then
+    activeItem.setCursor("/cursors/chargeready.cursor")
+  else
+    activeItem.setCursor("/cursors/reticle0.cursor")
+  end
+end
+
+function uninit()
+  for i, rocket in ipairs(self.activeRockets) do
+    world.callScriptedEntity(rocket, "setTarget", nil)
+  end
+end
+
+function fire()
+  self.pParams.powerMultiplier = activeItem.ownerPowerMultiplier()
+  local rocketId = world.spawnProjectile(
+      self.pType,
+      firePosition(),
+      activeItem.ownerEntityId(),
+      aimVector(),
+      false,
+      self.pParams
+    )
+  if rocketId then
+    self.activeRockets[#self.activeRockets + 1] = rocketId
+  end
+  animator.setAnimationState("reload", "reload", true)
+  animator.burstParticleEmitter("fireParticles")
+  animator.playSound("fire")
+  self.recoilTimer = config.getParameter("recoilTime", 0.12)
+end
+
+function updateAim()
+  self.aimAngle, self.aimDirection = activeItem.aimAngleAndDirection(self.fireOffset[2], activeItem.ownerAimPosition())
+  activeItem.setArmAngle(self.aimAngle)
+  activeItem.setFacingDirection(self.aimDirection)
+end
+
+function updateRockets()
+  local newRockets = {}
+  for i, rocket in ipairs(self.activeRockets) do
+    if world.entityExists(rocket) then
+      newRockets[#newRockets + 1] = rocket
+    end
+  end
+  self.activeRockets = newRockets
+
+  for i, rocket in ipairs(self.activeRockets) do
+    world.callScriptedEntity(rocket, "setTarget", activeItem.ownerAimPosition())
+  end
+end
+
+function firePosition()
+  return vec2.add(mcontroller.position(), activeItem.handPosition(self.fireOffset))
+end
+
+function aimVector()
+  local aimVector = vec2.rotate({1, 0}, self.aimAngle + sb.nrand(config.getParameter("inaccuracy", 0), 0))
+  aimVector[1] = aimVector[1] * self.aimDirection
+  return aimVector
+end