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7.5 Improve enemy generator to make it more interesting
#FantomX_UsePhysics = True
Import fantomX
Import character
Class Game Extends App
Field engine:ftEngine
Field default_layer:ftLayer
Field default_scene:ftScene
Field player:Character
Field enemies:List<Character>
Field last_enemy_time:Float
' Add field for next enemy random interval
Field next_enemy_interval:Float
Method OnCreate()
Self.engine = New ftEngine
default_scene = engine.GetDefaultScene()
default_layer = engine.GetDefaultLayer()
Local box:ftObject = Self.engine.CreateBox(120, 20, engine.GetCanvasWidth()/2, engine.GetCanvasHeight()/2)
box.SetColor(0, 70, 70)
box.SetMaxSpeed(20.0)
box.SetMinSpeed(-20.0)
Self.player = New Character(box, True)
Self.enemies = New List<Character>()
Self.last_enemy_time = Millisecs()
' Starting interval for enemies is 3 seconds
Self.next_enemy_interval = 3000
' Set the starting seed of the Pseudo Random number generator
' So our game does not start the same every time
Seed = Millisecs()
End
Method OnUpdate()
Local time_delta:Float = Float(engine.CalcDeltaTime())/60.0
' put the next enemy interval here so we can randomize the time between enemies
If ((Millisecs() - Self.last_enemy_time) > Self.next_enemy_interval)
CreateEnemy()
Self.last_enemy_time = Millisecs()
End
player.Update(engine.GetCanvasWidth(), engine.GetCanvasHeight())
If engine.GetPaused() = False
engine.Update(time_delta)
End
End
Method CreateEnemy()
' Get random size and starting position for our enemy
Local rand_width:Float = Rnd(3, 7) * 10
Local rand_height:Float = Rnd(3, 7) * 10
Local rand_y:Float = Rnd(rand_height, Self.engine.GetCanvasHeight())
Local box:ftObject = Self.engine.CreateBox(rand_width, rand_height, Self.engine.GetCanvasWidth(), rand_y)
' Get a random color for our enemy
Local rand_color:Float = Rnd(0, 3)
Local colors:Int[] = [0, 0, 0]
If (rand_color <= 1.0)
colors = [255, 0, 0]
Else If (rand_color > 1.0 And rand_color <= 2.0)
colors = [0, 255, 0]
Else
colors = [0, 0, 255]
End
box.SetColor(colors[0], colors[1], colors[2])
' Get a random speed for our enemy
box.SetSpeedX(Rnd(10, 30) * -1)
enemies.AddLast(New Character(box))
' Create a new random interval to the next enemy
Self.next_enemy_interval = Rnd(0, 3) * 1000
End
Method OnRender()
' change to a white background
engine.Clear(255, 255, 255)
engine.Render()
engine.SetColor(0, 70, 70)
engine.RenderFlush()
End
End
Function Main()
New Game()
End
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