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