Again, some nostalgia. I remember, that it was late 80s, when I had a game called “Missile Attack” for Amiga. It was shareware game priced at $5.
Many years ago I made just for fun my own implementation of this classic game in Blitz3D. For curiosity, if my memory serves me right, in Terminator II young John Connor is playing this kind of game in one part of the movie.
In this blog post is shortened version of my Missile Attack game. The code is quite messy. I hope there are not any horrible bugs in this old game. This is the first time the game sees the daylight.
Copy paste the code to Blitz3D and start playing, it’s really quite fun, though quite pointless. 🙂 No external files are needed.
AppTitle "Missile Attack"
HidePointer
Graphics 640,480,32,2
SeedRnd MilliSecs()
fntArial20 = LoadFont("Arial",20)
fntCourier20 = LoadFont("courier",20,True)
SeedRnd MilliSecs()
Type missile
Field x#,y#
Field dx#,dy#
Field origX#, origY#
Field r,g,b
Field ovalM
End Type
Type ammoCircle
Field frame
Field x,y
Field hit
End Type
Type energyBar
Field r#
Field dr#
Field g#
Field dg#
Field b#
Field hit
End Type
Type yellowFlash
Field hit
End Type
gfxAim = CreateImage(25,25)
SetBuffer ImageBuffer(gfxAim)
Line 0,13,25,13
Line 13,0,13,25
gfxAmmo = CreateImage(72,72,72)
For q = 0 To 71
SetBuffer ImageBuffer (gfxAmmo,q)
Origin ox#,oy#
Color 0,0,255
Oval 72/2,72/2,r#,r#,0
ox# = ox# - 0.5
oy# = oy# - 0.5
r# = r# + 1
Next
gfxOval = CreateImage(15,15)
SetBuffer ImageBuffer(gfxOval)
Origin 0,0
Oval 0,0,15,15,0
SetBuffer BackBuffer()
.start
FlushKeys
For mssl.missile = Each missile
Delete mssl
Next
For ammo.ammoCircle = Each ammoCircle
Delete ammo
Next
For yc.yellowFlash = Each yellowFlash
Delete yc
Next
For eb.energyBar = Each energyBar
Delete eb
Next
eb.energyBar = New energyBar
divisor = 48
yellowFlashes = 0 ; nr of yellow flashes
energyBarLen = 72
yellow = 0
maxMissiles = 0
r# = 1
orig# = 50
ox# = 0
oy# = 0
nr_of_missiles = 0
gameover = False
printInstr = False
printStr = False
extraEarned = False
print_fullDestr = True
big = False
SetBuffer BackBuffer()
Repeat
Cls
If KeyHit(1) Then
End
EndIf
Color 255,0,0
SetFont fntCourier20
Text (640 - StringWidth("Missile Attack")) / 2,40,"Missile Attack"
SetFont fntArial20
Color 200,80,180
Text (640 - StringWidth("Use mouse to shoot the missiles")) / 2, 100, "Use mouse to shoot the missiles"
Text (640 - StringWidth("Space for full destruction")) / 2, 140, "Space for full destruction"
Color 0,255,0
Text (640 - StringWidth("Press Return to begin"))/2,380,"Press Return To begin"
Color 255,0,255
Text (640 - StringWidth("Public Domain"))/2,420,"Public Domain"
Flip
Until KeyHit(28) ; Return starts the game
FlushKeys
Cls
destr = 0 ; full destructions
SetBuffer BackBuffer()
blueFrame = False
bigBangs = 3
amountMissiles = Rand(5,8)
nr_of_missiles = 0
print_bigShot = False
divisor = 48
yellowFlashes = 0
energyBarLen = 72
yellow = 0
maxMissiles = 0
r# = 1
orig# = 50
ox# = 0
oy# = 0
gameover = False
extraEarned = False
print_fullDestr = True
big = False
firstBigShot = True
yellowFlashesInfo = False
While Not gameover = True
Cls
If KeyHit(1) Then Goto start
mx = MouseX()
my = MouseY()
DrawImage gfxAim,mx,my
While nr_of_missiles < amountMissiles
mssl.missile = New missile
msslorigX# = Rand(100,580)
msslx# = Rand(50,100)
msslorigY# = 31
msslx# = msslorigX# + Rand(-5,5)
mssly# = 32
mssldx# = Rnd(-2,2)
mssldy# = Rnd(0,2)
msslr = Rand(50,255)
msslg = Rand(50,255)
msslb = Rand(50,255)
msslovalM = Rand(5,15)
nr_of_missiles = nr_of_missiles + 1
Wend
If MouseHit(1) Then
ammo.ammoCircle = New ammoCircle
ammox = mx - 24
ammoy = my - 24
ammoframe = 1
ammohit = 0
EndIf
Origin 0,0
Color 0,0,255
If bigBangs > 0 And bigBangs < 4 Then
For i = 1 To bigBangs
Oval 565 + i * 15,460,10,10,1
Next
EndIf
For ammo.ammoCircle = Each ammoCircle
ammoframe = ammoframe + 2
If ammoframe >= divisor Then
Delete ammo
Else
If nr_of_missiles > 0 Then
DrawImage gfxAmmo,ammox,ammoy,ammoframe
For mssl.missile = Each missile
If ImageRectCollide (gfxAmmo,ammox,ammoy,ammoframe, msslx ,mssly ,5,5)
Delete mssl
ammohit = ammohit + 1
nr_of_missiles = nr_of_missiles - 1
EndIf
Next
EndIf
EndIf
Next
If print_bigShot = True Then
Color 0,0,255
If MilliSecs() - 2500 < timer_bigShot Then
Text 270,200,"Big shot earned!"
Else
print_bigShot = False
EndIf
EndIf
For ammo.ammoCircle = Each ammoCircle
maxMissiles = ammohit
If ammohit >= 2 Then
divisor = 72
If firstBigShot = True Then
firstBigShot = False
print_bigShot = True
timer_bigShot = MilliSecs()
yellowFlashes = 0
EndIf
big = True
EndIf
; If nr of missiles = 0, player get all 3 full destruction balls
If nr_of_missiles = 0 Then
timer_all = MilliSecs()
print_fullDestr = True
first_bigShot = True
timer_bigShot = MilliSecs()
blueTimer = MilliSecs()
blueFrame = True
bigBangs = 3
destr = destr + 1
For mssl.missile = Each missile
Delete mssl
Next
For ammo.ammoCircle = Each ammoCircle
Delete ammo
Next
For yc.yellowFlash = Each yellowFlash
Delete yc
Next
For eb.energyBar = Each energyBar
Delete eb
Next
nr_of_missiles = 0
divisor = 72
big = True
Exit
EndIf
Next
If print_fullDestr = True Then
If MilliSecs() - timer_all < 2500 Then
Text 270,220,"Full destruction!"
EndIf
If MilliSecs() - timer_all > 2500 Then print_fullDestr = False
EndIf
If gameover = True Then
For mssl.missile = Each missile
Delete mssl
Next
For ammo.ammoCircle = Each ammoCircle
Delete ammo
Next
For yc.yellowFlash = Each yellowFlash
Delete yc
Next
For eb.energyBar = Each energyBar
Delete eb
Next
Goto gameEnd
EndIf
; BigBang
If KeyHit(57) Then
If bigBangs > 0 Then
blueTimer = MilliSecs()
blueFrame = True
bigBangs = bigBangs - 1
amountMissiles = 1
nr_of_missiles = 0
Else
bigBangs = 0
blueFrame = False
EndIf
EndIf
Color 0,255,0
Line 0,450,639,450
Line 0,30,639,30
For mssl.missile = Each missile
If msslx# <= 0 Or msslx# >= 639 Then
Delete mssl
nr_of_missiles = nr_of_missiles - 1
ec.yellowFlash = New yellowFlash
echit = True
yellowFrame = True
yellowTimer = MilliSecs()
yellowFlashes = yellowFlashes + 1
EndIf
Next
; If 20 missiles have gone to side of the screen.
; return the normal size shot
If yellowFlashesInfo = False And yellowFlashes > 20 And big = True Then
divisor = 48
yellowFlashesDelay = MilliSecs()
yellowFlashesInfo = True
yellowFlashes = 0
EndIf
If yellowFlashesInfo = True Then
If big = True Then print_bigShot = True ;
If MilliSecs() - 2500 < yellowFlashesDelay Then
firstBigShot = True
Color 255,0,0
Text 270,185,"Big shot lost!"
Else
yellowFlashesInfo = False
big = False
firstBigShot = True
EndIf
EndIf
For mssl.missile = Each missile
msslx# = msslx# + mssldx#
mssly# = mssly# + mssldy#
Color 255,255,255
Line msslorigX#, 31, msslx#, mssly#
Color msslr,msslg,msslb
Oval msslx#-msslovalM/2,mssly#-msslovalM/2,msslOvalM,msslovalM,1
If mssly# >=450 Then
gameover = True
EndIf
Next
If gameover = False Then
eb.energyBar = New energyBar
ebr# = 255
ebdr# = 255 / 72
ebg# = 0
ebdg# = 255 / 72
ebb# = 0
ebhit = 0
yellow = 0
For ec.yellowFlash = Each yellowFlash
If echit = True Then
yellow = yellow + 1
Delete ec
EndIf
Next
energyBarLen = energyBarLen - yellow
If energyBarLen <= 0 Then
gameOver = True
Goto gameEnd
EndIf
For i = 1 To energyBarLen
ebr# = ebr# - ebdr#
ebg# = ebg# + ebdg#
Color ebr#,ebg#,ebb#
Line i + 263 ,460,i + 263,470
Next
yellow = 0
EndIf
If gameover = True Then
For mssl.missile = Each missile
Delete mssl
Next
For ammo.ammoCircle = Each ammoCircle
Delete ammo
Next
For yc.yellowFlash = Each yellowFlash
Delete yc
Next
For eb.energyBar = Each energyBar
Delete eb
Next
EndIf
If yellowFrame = True Then
Color 255,255,0
Rect 0,31,640,419,1
If MilliSecs() < yellowTimer + 2000 Then yellowFrame = False
EndIf
If blueFrame = True Then
Color 0,0,255
Rect 0,31,640,420,1
For mssl.missile = Each missile
nr_of_missiles = nr_of_missiles - 1
Delete mssl
Next
For ammo.ammoCircle = Each ammoCircle
Delete ammo
Next
nr_of_missiles = 0
amountMissiles = Rand(5,8)
If MilliSecs() < blueTimer + 2000 Then
blueFrame = False
nr_of_missiles = 0
EndIf
EndIf
Flip
Wend
.gameEnd
endTimer = MilliSecs()
Repeat
If MilliSecs() > endTimer + 10000 Then Exit
Color 200,100,100
Text (640 - StringWidth("Game Over")) / 2, 200, "Game Over"
Flip
Until KeyHit(1) Or KeyHit(28) Or KeyHit(57)
Goto start
End
Instructions for playing:
- Use mouse to shoot the missiles
- Space bar for full destruction
- When at least 2 missiles are shot with one shot. the player is rewarded by bigger shot
- If a missile goes to the side of the screen, player’s energy decreases
- If missile touches the line at the bottom of the window, the game ends
- If the player clears the screen by firing, the player is rewarded by giving 3 full destruction balls
The code isn’t really commented, sorry!
Blue Bit Entertainment 