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remstart
   -------------------------------------------------------------------
   program name: Laser Assault 2
   -------------------------------------------------------------------
   written by: UFO
   date: 11/19/05
   -------------------------------------------------------------------
   comments:
      Image Usage:
         (1-3)-player ship
         (4)-Player bullet
         (20-25) - explosion1 :`<<<<<<<<<<<<<<<<<<<<<<<<<
         (100^)-Aliens
      Sprite Usage:
         1 - Player ship
         (100-110) - Player Bullets
         (10-99) - Aliens
         (120-135) = explosions :`<<<<<<<<<<<<<<<<<<<<<<<
      Sound usage:
         1 - Player shoot
      Arrays:
         PBullet(maxnum,3) - 1=exists 2=x 3=y
         Alien(maxnum,5) - 1=exists 2=x 3=y 4=type 5=frame 6 -Height 7-special 8-special2
         Explosion(maxnum,3) 1=exists 2=x 3=y 4=frame :`<<<<<<<<<<<<<
   -------------------------------------------------------------------
remend

amountofstars=300
Animtimer = timer()
Frame = 1
Dim Stars(amountofstars,3)
Dim Ppos(2)
Ppos(1) = 30
Ppos(2) = 240
maxplayerbullets = 10
Dim PBullet(maxplayerbullets,3)
AlienTimer = timer()
Maxaliens = 20
Dim Alien(Maxaliens,7)
Dim Explosion(15,4) :`<<<<<<<<<<<<<<<<<<<<<

True = 1
False = 0

Sync on
hide mouse

gosub Init_Stars
gosub Load_Images
gosub load_sounds

gosub Draw_Stars
gosub Draw_Ship

Do

   gosub Draw_Stars

   gosub Draw_Ship
   gosub Move_Ship

   gosub Make_Alien
   gosub Move_Alien
   gosub Draw_Alien

   gosub Shooting
   gosub Move_Bullets
   gosub Draw_Bullets
   gosub Bullet_Collision

   gosub draw_explosion :`<<<<<<<<<<<<<<<<<<<<<<<<<<<<

   gosub Animation

   For I = 1 to maxaliens
      Print Alien(I,1);
   next I
   Print "----";
   For I = 1 to 15
      Print Explosion(I,1);
   next I
   Print "----";
   For I = 1 to 3
      Print Explosion(I,4);
   next I

   sync

Loop



Init_Stars:

   For I = 1 to amountofstars

      Stars(I,1) = rnd(640)
      Stars(I,2) = rnd(320)+80
      Stars(I,3) = rnd(9)+1

   next I

return

Draw_Stars:

   cls
   Ink rgb(255,255,255),0

   For I = 1 to Amountofstars

      Stars(I,1) = Stars(I,1) - Stars(I,3)
      If Stars(I,1) < 0 then Stars(I,1) = 640
      Dot Stars(I,1),Stars(I,2)

   next I

return

Load_images:

   Load image "media/Player/Ablast1.bmp",1
   Load image "media/player/Ablast2.bmp",2
   Load image "media/player/Ablast3.bmp",3

   Load image "media/player/Bullet.bmp",4


   Load image "media/explosions/1.bmp",50 :`<<<<<<<<<<<<<<<<<<
   Load image "media/explosions/2.bmp",51 :`<<<<<<<<<<<<<<<<<<
   Load image "media/explosions/3.bmp",52 :`<<<<<<<<<<<<<<<<<<
   Load image "media/explosions/4.bmp",53 :`<<<<<<<<<<<<<<<<<<
   Load image "media/explosions/5.bmp",54 :`<<<<<<<<<<<<<<<<<<
   Load image "media/explosions/6.bmp",55 :`<<<<<<<<<<<<<<<<<<


   Load image "media/aliens/1-1.bmp",100
   Load image "media/aliens/1-2.bmp",101
   Load image "media/aliens/1-3.bmp",102

   Load image "media/aliens/2-1.bmp",103
   Load image "media/aliens/2-2.bmp",104
   Load image "media/aliens/2-3.bmp",105

   Load image "media/aliens/3-1.bmp",106
   Load image "media/aliens/3-2.bmp",107
   Load image "media/aliens/3-3.bmp",108

   Load image "media/aliens/4-1.bmp",109
   Load image "media/aliens/4-2.bmp",110
   Load image "media/aliens/4-3.bmp",111

   Load image "media/aliens/5-1.bmp",112
   Load image "media/aliens/5-2.bmp",113
   Load image "media/aliens/5-3.bmp",114

return

Load_sounds:

   Load sound "media/sounds/phaser.wav",1
   Load sound "media/sounds/explode.wav",5

Draw_SHip:

   Sprite 1,ppos(1),ppos(2),frame

return

Animation:

   If Animtimer < timer() - 50
      Frame = Frame + 1

      For I = 1 to maxaliens
         Alien(I,5) = Alien(I,5) + 1
         If Alien(I,5) = 4 then Alien(I,5) = 1
      next I

      For I = 1 to 15 :`<<<<<<<<<<<<<<<<<<<<<<<<<<<<
         If explosion(I,1) = true
            Explosion(I,4) = Explosion(I,4) + 1
            If Explosion(I,4) = 7 then Explosion(I,1) = false
         endif
      next I :`<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

      animtimer = timer()
   endif
   If Frame = 4 then Frame = 1

return

Move_Ship:

   If upkey() = true then ppos(2) = curvevalue(ppos(2)-25,ppos(2),4)
   If downkey() = true then ppos(2) = curvevalue(ppos(2)+25,ppos(2),4)
   If leftkey() = true then ppos(1) = curvevalue(ppos(1)-25,ppos(1),4)
   If rightkey() = true then ppos(1) = curvevalue(ppos(1)+25,ppos(1),4)

   If ppos(1)<0 then ppos(1) = 1
   If ppos(1)>640-sprite width(1) then ppos(1) = 639-sprite width(1)
   If ppos(2)<80 then ppos(2) = 81
   If ppos(2)>400-sprite height(1) then ppos(2) = 399-sprite height(1)

return

Shooting:

   If shiftkey() = true and shoot = true
      shoot = false
      Play sound 1
      For I = 1 to maxplayerbullets
         If PBullet(I,1) = false
            PBullet(I,1) = true
            PBullet(I,2) = Ppos(1)+sprite width(1)-20
            PBullet(I,3) = Ppos(2)+(sprite height(1)/2)-2
            Goto leave
         endif
      next I
      leave:
   endif

   If shiftkey() = false then shoot = true

return

Move_Bullets:

   For I = 1 to maxplayerbullets

      If PBullet(I,1) = true
         PBullet(I,2) = curvevalue(PBullet(I,2)+50,PBullet(I,2),3)
         If PBullet(I,2) > 700 then PBullet(I,1) = false
      endif

   next I

return

Draw_Bullets:

   For I = 1 to maxplayerbullets

      If PBullet(I,1) = true then Sprite 99+I,PBullet(I,2),PBullet(I,3),4

   next I

return

Bullet_Collision:

   For I = 1 to maxplayerbullets

      If Sprite exist(99+I) = true

         For N = 1 to maxaliens

            If sprite exist(9+N) = true

               If Sprite hit(I+99,9+N) = true
                  Alien(N,1) = false
                  PBullet(I,1) = false
                  Make_Explosion(Sprite x(99+I)+sprite width(99+I)-11,Sprite y(99+I)-10) :`<<<<<<<<<<<<<<<<<<<<<<<<<<<<,
                  sprite I+99,640,480,1
                  sprite N+9,0,480,1
               endif

            endif

         Next N

      endif

   Next I

return

Make_Alien:

   If alientimer < timer() - 250

      alientimer = timer()
         For I = 1 to maxaliens

            If Alien(I,1) = false
               Alien(I,1) = true
               Alien(I,2) = 640
               Alien(I,4) = rnd(4)+1
               If alien(I,4) = 5 then Alien(I,4) = 13
               If alien(I,4) = 4 then Alien(I,4) = 10
               If Alien(I,4) = 3 then Alien(I,4) = 7
               If alien(I,4) = 2 then Alien(I,4) = 4

               Alien(I,5) = 1

               If alien(I,4) = 1 then Alien(I,6) = 21
               If alien(I,4) = 4 then Alien(I,6) = 39
               IF alien(I,4) = 7 then Alien(I,6) = 32
               If alien(I,4) = 10 then Alien(I,6) = 31
               If alien(I,4) = 13 then Alien(I,6) = 33

               IF alien(I,4) = 7 then Alien(I,7) = 50
               If alien(I,4) = 10 then Alien(I,7) = rnd(1)+1
               IF Alien(I,4) = 10 and Alien(I,7) = 1 then Alien(I,7) = 5
               IF Alien(I,4) = 10 and Alien(I,7) = 2 then Alien(I,7) = -5

               Alien(I,3) = rnd(320-Alien(I,6))+80
               goto leavethisplace
            endif

         next I
      Leavethisplace:

   endif

return

Move_Alien:

   For I = 1 to maxaliens

      If Alien(I,1) = true
         If Alien(I,4) = 1
            Alien(I,2) = Alien(I,2) - 4
            If ppos(2) > Alien(I,3) then Alien(I,3) = Alien(I,3) + 1
            If ppos(2) < Alien(I,3) then Alien(I,3) = Alien(I,3) - 1
            If Alien(I,2) < -30 then Alien(I,1) = false
         endif
         If Alien(I,4) = 4
            Alien(I,2) = Alien(I,2) - 10
            If Alien(I,2) < -50 then Alien(I,1) = false
         endif
         If Alien(I,4) = 7
            Alien(I,2) = Alien(I,2) - int(Alien(I,7)/2)
            Alien(I,7) = Alien(I,7) - 1
            If Alien(I,2) > 645 then Alien(I,1) = false
         endif
         If alien(I,4) = 10
            Alien(I,2) = Alien(I,2) - 7
            Alien(I,3) = Alien(I,3) + Alien(I,7)
            If Alien(I,3) < 75 then Alien(I,7) = 5
            If Alien(I,3) > 415-Alien(I,6) then Alien(I,7) = -5
            If Alien(I,2) < -50 then Alien(I,1) = false
         endif
         If alien(I,4) = 13
            Alien(I,2) = Alien(I,2) - 10
            If ppos(2) > Alien(I,3)+10 then Alien(I,3) = Alien(I,3) + 3
            If ppos(2) < Alien(I,3)-10 then Alien(I,3) = Alien(I,3) - 3
            If Alien(I,2) < -50 then Alien(I,1) = false
         endif
      endif

   next I

return

Draw_Alien:

   For I = 1 to maxaliens
      If Alien(I,1) = true then Sprite 9+I,Alien(I,2),Alien(I,3),98+Alien(I,4)+Alien(I,5)
   next I

return

Draw_Explosion: :`<<<<<<<<<<<<<<<<<<<<<<<

   For I = 1 to 15
      If Explosion(I,1) = true then sprite 119+I,100,100,19+Explosion(I,4)
   next I

return :`<<<<<<<<<<<<<<<<<<<<<<,

Function Make_Explosion(x,y) :`<<<<<<<<<<<<<<<<<<<<<<<<

   Play sound 5

   For I = 1 to 15
      If Explosion(I,1) = 0
         Explosion(I,1) = 1
         Explosion(I,2) = x
         Explosion(I,3) = y
         Explosion(I,4) = 1
         goto getout
      endif
   next I
   getout:

endfunction :`<<<<<<<<<<<<<<<<<<<<<<<<

Fade_Out:
  Done=0
  T=Timer()
  EndTime#=T+(2000): Rem 1000=1 second 2000=2 seconds and so on
  Step#=EndTime#-T
  Repeat
    CurT#=Timer()-T
    Ratio#=CurT#/Step#
    RGBVal=255-(255*Ratio#)
    If RGBVal<0 then RGBVal=0 : Done=1
    Set Gamma RGBVal,RGBVal,RGBVal
    Sync
  Until Done=1
Return

Fade_In:
  Done=0
  T=Timer()
  EndTime#=T+(2000): Rem 1000=1 second 2000=2 seconds and so on
  Step#=EndTime#-T
  Repeat
    CurT#=Timer()-T
    Ratio#=CurT#/Step#
    RGBVal=(255*Ratio#)
    If RGBVal>255 then RGBVal=255 : Done=1
    Set Gamma RGBVal,RGBVal,RGBVal
    Sync
  Until Done=1
Return