80 lines
2.7 KiB
Lua
80 lines
2.7 KiB
Lua
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DIRECTION_NORTH = 1
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DIRECTION_EAST = 2
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DIRECTION_SOUTH = 3
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DIRECTION_WEST = 4
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FLOCK_SPREAD = 10
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H_SPAWN = 320
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V_SPAWN = 240
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function OnActorCreate(id, parameters)
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spawnerId = id
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duration = parameters.spawningDuration
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minSpawnTime = parameters.minSpawnTime
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maxSpawnTime = parameters.maxSpawnTime
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minFlockCount = parameters.minFlockCount
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maxFlockCount = parameters.maxFlockCount
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minSpeed = parameters.minSpeed
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maxSpeed = parameters.maxSpeed
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ActorSetShape(
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spawnerId,
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ACTOR_SHAPE_TYPE_COLLISION_SOLID,
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{ size = {x = 32, y = 48 }, position = { x = 0, y = 0 }, data = 0, enabled = true}
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)
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directions =
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{
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[DIRECTION_NORTH] = "north",
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[DIRECTION_EAST] = "east",
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[DIRECTION_SOUTH] = "south",
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[DIRECTION_WEST] = "west"
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}
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birdTimer = 0
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end
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function OnActorUpdate(elapsed)
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if birdTimer <= 0 then
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local camPos = CameraGetTarget()
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local directionValue = math.random(1,4)
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if directionValue == DIRECTION_SOUTH then
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start = {x=math.random(camPos.x - H_SPAWN, camPos.x + H_SPAWN),y=camPos.y - V_SPAWN}
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nxtBird = {{x=-FLOCK_SPREAD,y=-FLOCK_SPREAD}, {x=FLOCK_SPREAD,y=-FLOCK_SPREAD}}
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elseif directionValue == DIRECTION_NORTH then
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start = {x=math.random(camPos.x - H_SPAWN, camPos.x + H_SPAWN),y=camPos.y + V_SPAWN}
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nxtBird = {{x=-FLOCK_SPREAD,y=FLOCK_SPREAD}, {x=FLOCK_SPREAD,y=FLOCK_SPREAD}}
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elseif directionValue == DIRECTION_WEST then
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start = {x=camPos.x + H_SPAWN, y=math.random(camPos.y - V_SPAWN, camPos.y + V_SPAWN)}
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nxtBird = {{x=FLOCK_SPREAD,y=FLOCK_SPREAD}, {x=FLOCK_SPREAD,y=-FLOCK_SPREAD}}
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elseif directionValue == DIRECTION_EAST then
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start = {x=camPos.x - H_SPAWN, y=math.random(camPos.y - V_SPAWN, camPos.y + V_SPAWN)}
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nxtBird = {{x=-FLOCK_SPREAD,y=FLOCK_SPREAD}, {x=-FLOCK_SPREAD,y=-FLOCK_SPREAD}}
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end
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local bird = 0
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local distanceRatio = 0
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local flockCount = math.random(minFlockCount, maxFlockCount)
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local speed = math.random(minSpeed, maxSpeed)
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while bird < flockCount do
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if (math.mod(bird,2) == 0) then
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distanceRatio = bird
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end
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ActorAdd("Bird.01",
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{x=start.x + (nxtBird[math.mod(bird,2) + 1].x * distanceRatio),
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y=start.y + (nxtBird[math.mod(bird,2) + 1].y * distanceRatio)},
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nil,
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{direction=directions[directionValue], speed=speed})
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bird = bird + 1
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end
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birdTimer = math.random(minSpawnTime, maxSpawnTime)
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end
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birdTimer = birdTimer - elapsed
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end
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