graphics.ref

; Sprite graphics gallery.

[Graphic:plane:Player plane]
The player's plane is a 2×1 tile (16×8 pixel) sprite with 4 pre-shifted
frames for smooth horizontal movement. A separate banked variant is used when
the plane turns left or right.

#UDGARRAY2,14,4,2($83B1-$83B2-1-16)(*plane-f1)
#UDGARRAY2,14,4,2($83C1-$83C2-1-16)(*plane-f2)
#UDGARRAY2,14,4,2($83D1-$83D2-1-16)(*plane-f3)
#UDGARRAY2,14,4,2($83E1-$83E2-1-16)(*plane-f4)
#UDGARRAY2,14,4,2($83F1-$83F2-1-16)(*plane-banked-f1)
#UDGARRAY2,14,4,2($8401-$8402-1-16)(*plane-banked-f2)
#UDGARRAY2,14,4,2($8411-$8412-1-16)(*plane-banked-f3)
#UDGARRAY2,14,4,2($8421-$8422-1-16)(*plane-banked-f4)
#UDGTABLE
{ =h Centered (straight flight) }
{ #FRAMES(plane-f1,50;plane-f2;plane-f3;plane-f4;plane-f3;plane-f2)(plane) }
{ =h Banked (turning left/right) }
{ #FRAMES(plane-banked-f1,50;plane-banked-f2;plane-banked-f3;plane-banked-f4;plane-banked-f3;plane-banked-f2)(plane-banked) }
TABLE#

Sprite data: #R$83B1 (centered), #R$83F1 (banked).

[Graphic:helicopter:Helicopter]
Regular and advanced helicopters share the same 3×1 tile (24×8 pixel) sprite
format with 4 pre-shifted frames per direction. The advanced variant fires
missiles at the player.

#UDGARRAY3,14,4,3($8793-$8796-1-16{0,0,64,32})(*helicopter-reg-right-f1)
#UDGARRAY3,14,4,3($87AB-$87AE-1-16{0,0,64,32})(*helicopter-reg-right-f2)
#UDGARRAY3,14,4,3($87C3-$87C6-1-16{0,0,64,32})(*helicopter-reg-right-f3)
#UDGARRAY3,14,4,3($87DB-$87DE-1-16{0,0,64,32})(*helicopter-reg-right-f4)
#UDGARRAY3,14,4,3($85B3-$85B6-1-16{0,0,64,32})(*helicopter-reg-left-f1)
#UDGARRAY3,14,4,3($85CB-$85CF-1-16{0,0,64,32})(*helicopter-reg-left-f2)
#UDGARRAY3,14,4,3($85E3-$85E6-1-16{0,0,64,32})(*helicopter-reg-left-f3)
#UDGARRAY3,14,4,3($85FB-$85FE-1-16{0,0,64,32})(*helicopter-reg-left-f4)
#UDGARRAY3,14,4,3($8853-$8856-1-16{0,0,64,32})(*helicopter-adv-right-f1)
#UDGARRAY3,14,4,3($886B-$886E-1-16{0,0,64,32})(*helicopter-adv-right-f2)
#UDGARRAY3,14,4,3($8883-$8886-1-16{0,0,64,32})(*helicopter-adv-right-f3)
#UDGARRAY3,14,4,3($889B-$889E-1-16{0,0,64,32})(*helicopter-adv-right-f4)
#UDGARRAY3,14,4,3($8673-$8676-1-16{0,0,64,32})(*helicopter-adv-left-f1)
#UDGARRAY3,14,4,3($868B-$868F-1-16{0,0,64,32})(*helicopter-adv-left-f2)
#UDGARRAY3,14,4,3($86A3-$86A6-1-16{0,0,64,32})(*helicopter-adv-left-f3)
#UDGARRAY3,14,4,3($86BB-$86BE-1-16{0,0,64,32})(*helicopter-adv-left-f4)

#UDGTABLE
{ =h Regular helicopter }
{ #FRAMES(helicopter-reg-right-f1,50;helicopter-reg-right-f2;helicopter-reg-right-f3;helicopter-reg-right-f4;helicopter-reg-left-f4;helicopter-reg-left-f3;helicopter-reg-left-f2;helicopter-reg-left-f1)(helicopter-reg) }
{ =h Advanced helicopter }
{ #FRAMES(helicopter-adv-right-f1,50;helicopter-adv-right-f2;helicopter-adv-right-f3;helicopter-adv-right-f4;helicopter-adv-left-f4;helicopter-adv-left-f3;helicopter-adv-left-f2;helicopter-adv-left-f1)(helicopter-adv) }
TABLE#

Sprite data: #R$85B3 (left-facing), #R$8793 (right-facing).

[Graphic:rotor:Helicopter rotor]
The helicopter rotor is a 2-tile wide × 2-pixel tall sprite rendered separately
above the helicopter body. Each direction has 4 pre-shifted frames for smooth
animation as the helicopter moves horizontally.

#UDGARRAY2,6,4,2($8AB8-$8ABB-1-16{0,0,64,8})(*rotor-left-f1)
#UDGARRAY2,6,4,2($8ABC-$8ABF-1-16{0,0,64,8})(*rotor-left-f2)
#UDGARRAY2,6,4,2($8AC0-$8AC3-1-16{0,0,64,8})(*rotor-left-f3)
#UDGARRAY2,6,4,2($8AC4-$8AC7-1-16{0,0,64,8})(*rotor-left-f4)
#UDGARRAY2,6,4,2($8AC8-$8ACB-1-16{0,0,64,8})(*rotor-right-f1)
#UDGARRAY2,6,4,2($8ACC-$8ACF-1-16{0,0,64,8})(*rotor-right-f2)
#UDGARRAY2,6,4,2($8AD0-$8AD3-1-16{0,0,64,8})(*rotor-right-f3)
#UDGARRAY2,6,4,2($8AD4-$8AD7-1-16{0,0,64,8})(*rotor-right-f4)
#UDGTABLE
{ =h Left-facing rotor }
{ #FRAMES(rotor-left-f1,50;rotor-left-f2;rotor-left-f3;rotor-left-f4;rotor-left-f3;rotor-left-f2)(rotor-left) }
{ =h Right-facing rotor }
{ #FRAMES(rotor-right-f1,50;rotor-right-f2;rotor-right-f3;rotor-right-f4;rotor-right-f3;rotor-right-f2)(rotor-right) }
TABLE#

Sprite data: #R$8AB8 (left), #R$8AC8 (right).

[Graphic:ship:Ship]
Ships are 3×1 tile (24×8 pixel) sprites with 4 pre-shifted frames per
direction.

#UDGARRAY3,13,4,3($8613-$8616-1-16)(*ship-left-f1)
#UDGARRAY3,13,4,3($862B-$862E-1-16)(*ship-left-f2)
#UDGARRAY3,13,4,3($8643-$8646-1-16)(*ship-left-f3)
#UDGARRAY3,13,4,3($865B-$865E-1-16)(*ship-left-f4)
#UDGARRAY3,13,4,3($87F3-$87F6-1-16)(*ship-right-f1)
#UDGARRAY3,13,4,3($880B-$880E-1-16)(*ship-right-f2)
#UDGARRAY3,13,4,3($8823-$8826-1-16)(*ship-right-f3)
#UDGARRAY3,13,4,3($883B-$883E-1-16)(*ship-right-f4)
#UDGTABLE
{ #FRAMES(ship-right-f1,50;ship-right-f2;ship-right-f3;ship-right-f4;ship-left-f4;ship-left-f3;ship-left-f2;ship-left-f1)(ship) }
TABLE#

Sprite data: #R$8613 (left), #R$87F3 (right).

[Graphic:tank:Tank]
Tanks are 3×1 tile (24×8 pixel) sprites with 4 pre-shifted frames per
direction. They move along river banks and fire parabolic shells.

#UDGARRAY3,60,4,3($86D3-$86D6-1-16{0,0,64,32})(*tank-left-f1)
#UDGARRAY3,60,4,3($86EB-$86EE-1-16{0,0,64,32})(*tank-left-f2)
#UDGARRAY3,60,4,3($8703-$8706-1-16{0,0,64,32})(*tank-left-f3)
#UDGARRAY3,60,4,3($871B-$871E-1-16{0,0,64,32})(*tank-left-f4)
#UDGARRAY3,60,4,3($88B3-$88B6-1-16{0,0,64,32})(*tank-right-f1)
#UDGARRAY3,60,4,3($88CB-$88CE-1-16{0,0,64,32})(*tank-right-f2)
#UDGARRAY3,60,4,3($88E3-$88E6-1-16{0,0,64,32})(*tank-right-f3)
#UDGARRAY3,60,4,3($88FB-$88FE-1-16{0,0,64,32})(*tank-right-f4)
#UDGTABLE
{ #FRAMES(tank-right-f1,50;tank-right-f2;tank-right-f3;tank-right-f4;tank-left-f4;tank-left-f3;tank-left-f2;tank-left-f1)(tank) }
TABLE#

Sprite data: #R$86D3 (left), #R$88B3 (right).

[Graphic:fighter:Fighter]
Fighters are 3×1 tile (24×8 pixel) sprites with 4 pre-shifted frames per
direction. They are the fastest enemy at 4 pixels/frame, which means they
always move in full character cell increments — so at most 1-2 of the 4
pre-shifted frames are ever displayed.

#UDGARRAY3,12,4,3($8733-$8736-1-16{0,0,64,32})(*fighter-left-f1)
#UDGARRAY3,12,4,3($874B-$874E-1-16{0,0,64,32})(*fighter-left-f2)
#UDGARRAY3,12,4,3($8763-$8766-1-16{0,0,64,32})(*fighter-left-f3)
#UDGARRAY3,12,4,3($877B-$877E-1-16{0,0,64,32})(*fighter-left-f4)
#UDGARRAY3,12,4,3($8913-$8916-1-16{0,0,64,32})(*fighter-right-f1)
#UDGARRAY3,12,4,3($892B-$892E-1-16{0,0,64,32})(*fighter-right-f2)
#UDGARRAY3,12,4,3($8943-$8946-1-16{0,0,64,32})(*fighter-right-f3)
#UDGARRAY3,12,4,3($895B-$895E-1-16{0,0,64,32})(*fighter-right-f4)
#UDGTABLE
{ #FRAMES(fighter-right-f1,50;fighter-right-f2;fighter-right-f3;fighter-right-f4;fighter-left-f4;fighter-left-f3;fighter-left-f2;fighter-left-f1)(fighter) }
TABLE#

Sprite data: #R$8733 (left), #R$8913 (right).

[Graphic:balloon:Balloon]
Balloons are 2×2 tile (16×16 pixel) sprites with 4 pre-shifted frames. Unlike
other enemies, balloons have no separate left/right variants — they float
vertically.

#UDGARRAY2,14,4,2($8972-$898A-1-16)(*balloon-f1)
#UDGARRAY2,14,4,2($8992-$89AA-1-16)(*balloon-f2)
#UDGARRAY2,14,4,2($89B2-$89CA-1-16)(*balloon-f3)
#UDGARRAY2,14,4,2($89D2-$89EA-1-16)(*balloon-f4)
#UDGTABLE
{ #FRAMES(balloon-f1,50;balloon-f2;balloon-f3;balloon-f4;balloon-f3;balloon-f2)(balloon) }
TABLE#

Sprite data: #R$8972.

[Graphic:fuelDepot:Fuel depot]
The fuel depot is a 2-tile wide, 25-pixel tall static sprite — the tallest
object in the game.

#UDGTABLE
{ #UDGARRAY2,11,4,2($8A86-$8AB8-1-16{0,0,64,100})(sprite-fuel) }
TABLE#

Sprite data: #R$8A86.

[Graphic:rock:Rock]
Rocks are 3×2 tile (24×16 pixel) static decorations with 4 variants.

#UDGTABLE
{ #UDGARRAY3,34,4,3($84A1-$84D0-1-24)(rock-1) |
  #UDGARRAY3,34,4,3($84D1-$8500-1-24)(rock-2) |
  #UDGARRAY3,34,4,3($8501-$8530-1-24)(rock-3) |
  #UDGARRAY3,34,4,3($8531-$8560-1-24)(rock-4) }
TABLE#

Sprite data: #R$84A1.

[Graphic:explosion:Explosion]
The explosion animation uses 3 frames of 2×1 tile (16×8 pixel) sprites,
played back in a 1-2-3-2 loop.

#UDGARRAY2,14,4,2($8471-$8472-1-16)(*explosion-f1)
#UDGARRAY2,14,4,2($8481-$8482-1-16)(*explosion-f2)
#UDGARRAY2,14,4,2($8491-$8492-1-16)(*explosion-f3)
#UDGTABLE
{ #FRAMES(explosion-f1,50;explosion-f2;explosion-f3;explosion-f2)(explosion) }
TABLE#

Sprite data: #R$8471 (frame 1), #R$8481 (frame 2), #R$8491 (frame 3).

[Graphic:missile:Missile and shell]
The player's missile is a 1×1 tile (8×8 pixel) sprite with 4 pre-shifted
frames and a separate trail sprite drawn below it.

#UDG$8431,14,4(*missile-f1)
#UDG$8439,14,4(*missile-f2)
#UDG$8441,14,4(*missile-f3)
#UDG$8449,14,4(*missile-f4)
#UDG$8451,14,4(*missile-trail-f1)
#UDG$8459,14,4(*missile-trail-f2)
#UDG$8461,14,4(*missile-trail-f3)
#UDG$8469,14,4(*missile-trail-f4)
#UDGTABLE
{ =h Missile }
{ #FRAMES(missile-f1,50;missile-f2;missile-f3;missile-f4;missile-f3;missile-f2)(missile) }
{ =h Trail }
{ #FRAMES(missile-trail-f1,50;missile-trail-f2;missile-trail-f3;missile-trail-f4;missile-trail-f3;missile-trail-f2)(missile-trail) }
TABLE#

Sprite data: #R$8431 (missile), #R$8451 (trail).

Tank shells reuse the missile sprite data but render only 1 pixel height
(SPRITE_SHELL_HEIGHT_PIXELS). The shell explosion is a 2×2 tile (16×16 pixel)
sprite at #R$8FFC.

[Graphic:tankShellExplosion:Tank shell explosion]
The tank shell explosion is a 2×2 tile (16×16 pixel) sprite with 6 frames
showing an expanding diamond pattern. Used when tank shells hit the ground
or player.

#UDGARRAY2,4,4,2($8FFC-$901A-1-16)(*tank-shell-exp-f1)
#UDGARRAY2,4,4,2($901C-$903A-1-16)(*tank-shell-exp-f2)
#UDGARRAY2,4,4,2($903C-$905A-1-16)(*tank-shell-exp-f3)
#UDGARRAY2,4,4,2($905C-$907A-1-16)(*tank-shell-exp-f4)
#UDGARRAY2,4,4,2($907C-$909A-1-16)(*tank-shell-exp-f5)
#UDGARRAY2,4,4,2($909C-$90BA-1-16)(*tank-shell-exp-f6)
#UDGTABLE
{ #FRAMES(tank-shell-exp-f1,50;tank-shell-exp-f2;tank-shell-exp-f3;tank-shell-exp-f4;tank-shell-exp-f5;tank-shell-exp-f6;tank-shell-exp-f5;tank-shell-exp-f4;tank-shell-exp-f3;tank-shell-exp-f2)(tank-shell-explosion) }
TABLE#

Sprite data: #R$8FFC.

[Graphic:unusedExplosion:Unused explosion (prototype)]
An unused 6-frame animation at #R$8AD8 showing a diamond shape expanding from
a single pixel to a full diamond. Each frame is 1×1 tile (8×8 pixels) — half
the size of the tank shell explosion at #R$8FFC. This appears to be an early
prototype that was replaced with the larger 16×16 pixel version for better
visibility.

#UDG$8AD8,4,4(*unused-exp-f1)
#UDG$8AE0,4,4(*unused-exp-f2)
#UDG$8AE8,4,4(*unused-exp-f3)
#UDG$8AF0,4,4(*unused-exp-f4)
#UDG$8AF8,4,4(*unused-exp-f5)
#UDG$8B00,4,4(*unused-exp-f6)
#UDGTABLE
{ #FRAMES(unused-exp-f1,50;unused-exp-f2;unused-exp-f3;unused-exp-f4;unused-exp-f5;unused-exp-f6;unused-exp-f5;unused-exp-f4;unused-exp-f3;unused-exp-f2)(unused-explosion) }
TABLE#

Sprite data: #R$8AD8.