There is no media in this shooter, it uses bmax drawing commands and bmax OOP.
Strict
SeedRnd MilliSecs()
Global kills
Global Player = 1
Global Enemy = 2
Global Lives
Global Score
Global PlayerList:TList = CreateList()
Global PlayerBulletList:TList = CreateList()
Global EnemyList:TList = CreateList()
Global EnemyBulletList:TList = CreateList()
Global explosionlist:TList = CreateList()
Global BulletTimer
Graphics 800,600,0
Type TGameObject
Field x,y,xv,yv
End Type
Type TPlayer Extends TGameObject
Field InvincibleTimer ' we want him to be invincible when he starts so we need a timer
Function Spawn()
Local Player:TPlayer = New TPlayer 'Create a new TPlayer Object
Player.InvincibleTimer=MilliSecs()+3000 '3 Seconds
Player.x = 400 'center
Player.y = 590 'bottom
'Add the player with info above into the player list
'The list is there so we can grab the player at any time.
PlayerList.AddLast(Player)
End Function
Function Update()
'This grabs the last object in the list, which happens to the the player object
'that was created. That's you!
Local Player:TPlayer = TPlayer(PlayerList.Last())
'Now we need to draw the object, but first lets find out if he's invincible.
SetColor 255,255,255 'naturally the player will be white in color,
'if the player is invincible he'll flash different colors.
If MilliSecs() < Player.InvincibleTimer ' then he's still invincible
SetColor Rand(0,255),Rand(0,255),Rand(0,255) 'pick a random color
End If
If KeyDown(KEY_LEFT) Then Player.x:-5
If KeyDown(KEY_RIGHT) Then Player.x:+5
If KeyDown(KEY_SPACE) and MilliSecs() > BulletTimer
TBullet.PlayerShoot(Player.x,Player.y-8)
TBullet.PlayerShoot(Player.x-8,Player.y)
TBullet.PlayerShoot(Player.x+8,Player.y)
EndIf
'Now lets draw the player, a triangle
DrawLine Player.x+16,Player.y,Player.x-16,Player.y
DrawLine Player.x,Player.y-32,Player.x+16,Player.y
DrawLine Player.x,Player.y-32,Player.x-16,Player.y
End Function
End Type
Type TEnemy Extends TGameObject
Field hitpoints
Field wave
Field startx
Function Spawn()
Local Enemy:TEnemy = New TEnemy
Enemy.startx=Rand(20,780)
Enemy.y= - 20
Enemy.hitpoints = 255
EnemyList.AddLast(Enemy)
End Function
Function Update()
For Local Enemy:TEnemy = EachIn EnemyList
Enemy.wave:+2
Enemy.y:+1
Enemy.x=Enemy.startx + Sin(Enemy.wave) * 20
If Rand(1,100) = 99 Then TBullet.EnemyShoot(Enemy.x,Enemy.y)
SetColor 255,Enemy.hitpoints,Enemy.hitpoints
DrawOval Enemy.x-32,Enemy.y-16,64,32
If Enemy.x < -70 Then Enemy.x = 864
If Enemy.x > 864 Then Enemy.x = -70
If Enemy.y > 660 Then Enemy.y = -60
If Enemy.hitpoints < 1 Then Enemy.explode
Next
End Function
Method explode()
kills:+1
For Local explosions = 1 To 10
TExplosion.Make(Self.x+Rand(-32,32),Self.y+Rand(-16,16),Rand(10,50))
EnemyList.Remove(Self)
Next
If CountList(EnemyList) < 6
TEnemy.Spawn() 'make two
TEnemy.Spawn()
EndIf
End Method
End Type
Type TExplosion Extends TGameObject
Field Radius
Field MaxRadius
Function Make (x,y,MaxRadius)
Local Explosion:TExplosion = New TExplosion
explosion.x = x
explosion.y = y
explosion.MaxRadius = MaxRadius
explosionlist.AddLast (explosion)
End Function
Function Update()
For Local explosion:TExplosion = EachIn explosionlist
explosion.Radius:+1
If explosion.Radius = explosion.MaxRadius Then explosionlist.Remove(explosion)
SetColor 255,255,0
DrawOval explosion.x-explosion.Radius/2,explosion.y-explosion.Radius/2,explosion.Radius,explosion.Radius
Next
End Function
End Type
Type TBullet Extends TGameObject
Field Owner ' specify who shot the bullet
Function PlayerShoot(x,y)
Local Bullet:TBullet = New TBullet
Bullet.x = x 'That's carried over from the function call, was player.x
Bullet.y = y - 34 ' Also carried over, but adjusted to be above the player
Bullet.Owner = Player 'The bullet collision detection will know whose is whose
PlayerBulletList.AddLast(Bullet)
BulletTimer = MilliSecs()+100
End Function
Function EnemyShoot(x,y)
Local Bullet:TBullet = New TBullet
Bullet.x = x 'Carried over from the function call, which was enemy.x
bullet.y = y 'Also carried over, but adjusted to be below the firing enemy
Bullet.Owner = Enemy 'The bullet collision detection will know whose is whose
EnemyBulletList.AddLast(Bullet)
End Function
Function Update()
For Local Bullet:TBullet = EachIn PlayerBulletList
SetColor 255,255,0
bullet.y:-14
DrawOval bullet.x,bullet.y,3,9
If bullet.y < -10 Then PlayerBulletList.Remove(Bullet)
' --------- CHECK COLLISIONS -----------
For Local Enemy:TEnemy = EachIn EnemyList
If bullet.x > Enemy.x-32 and bullet.x < Enemy.x+32 and bullet.y > Enemy.y-16 and bullet.y < Enemy.y+16
Enemy.hitpoints:-20
PlayerBulletList.Remove(bullet)
TExplosion.Make(bullet.x,bullet.y,10)
EndIf
Next
Next
For Local Bullet:TBullet = EachIn EnemyBulletList
SetColor 255,0,0
bullet.y:+4
DrawOval bullet.x,bullet.y,9,9
If bullet.y > 610 Then EnemyBulletList.Remove(Bullet)
Local Player:TPlayer = TPlayer(PlayerList.Last())
If MilliSecs() > Player.InvincibleTimer ' then he's not invincible
If bullet.x > Player.x-16 and bullet.x < Player.x+16 and bullet.y > Player.y-16 and bullet.y < Player.y+16
EnemyBulletList.Remove(bullet)
TExplosion.Make(Player.x,Player.y,100)
PlayerList.Remove(Player)
Lives:-1
TPlayer.Spawn()
EndIf
EndIf
Next
End Function
End Type
'These two lines start the game..
TPlayer.Spawn()
TEnemy.Spawn()
Repeat ' This is the main loop!!!!
Cls
If Lives > 0
SetBlend LIGHTBLEND
SetColor 0,255,255
DrawText "Lives:",1,1
DrawText Lives,50,1
DrawText "Kills:",1,20
DrawText kills,50,20
SetBlend ALPHABLEND
TEnemy.Update()
TBullet.Update()
TPlayer.Update()
TExplosion.Update()
EndIf
If Lives = 0
SetColor 255,Rand(0,255),255
DrawText "Highest kills:",10,10
DrawText kills,130,10
DrawText "Press 1 to play or ESC to quit",10,60
If KeyHit(key_1) Then Lives = 5; kills = 0
End If
Flip
Until KeyHit(KEY_ESCAPE)
Copy paste and enjoy, the source should help you understand bmax a little better. If I have time I'll try to create a step by step creation. As of now I'm concerned on the best way to walk some one through making this. Would it be better to go line by line, concept by concept, type by type.. Not sure exactly.. But if you study the code you'll understand whats going on.
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