;;; General ;;;
{
Botwoon

Enemy ID: $F293
Bank: $B3
Enemy projectiles:
    $EBA0: Botwoon's body
    $EC48: Botwoon's spit

Parameter 0: Unused
Parameter 1: Unused
Parameter 2: Unused

Properties must have process instructions bit set
Must be first enemy in room
}


;;; Behaviour ;;;
{
}


;;; WRAM ;;;
{
$0FA8: Body projectile index
$0FAA: Position history index
$0FAC: Body travel time
$0FAE: Function
{
    $9878: Initial
    $989D: Go through hole
    $99A4: Moving around
    $99E4: Spitting
    $9A46: Death sequence - pre-death delay
    $9A5E: Death sequence - falling to ground
    $9ACA: Death sequence - wait for body to fall to ground
    $9AF9: Death sequence - crumbling wall
}
$0FB0: Movement function
{
    $9BB7: Move directly toward target hole
    $E250: Start moving Botwoon according to movement data
    $E28C: Move Botwoon according to movement data
}
$0FB2: Head function
{
    $9DC0: Moving around
    $9E7D: Spitting - set angle and show
    $9EE0: Spitting - spawn 5 spit projectiles
    $9F34: Spitting - spawn 3 spit projectiles
    $9F7A: Spitting - cooldown
}

$7E:7800..19: Enemy projectile indices. Dh entries. First entry is the tail
$7E:7820..39: Body hidden flags. Dh entries. First entry is the tail

$7E:8000: Initialisation timer. Initialised to 100h, Botwoon waits until it decrements to zero before first moving
$7E:8002: Spit timer
$7E:8004: Pre-death counter. Counts up to 100h before starting death sequence falling
$7E:8006: Death counter. Counts up to C0h before deleting enemy, setting boss bit, and changing music
$7E:8008: Large wall explosion timer. Spawns a large explosion sprite every 13 frames for the crumbling wall
$7E:800A: Wall smoke timer. Spawns two smoke sprites every 5 frames for the crumbling wall
$7E:800C: Decremented when reached target hole. Never read
$7E:8010: Falling Y speed table index
$7E:801C: Set by unused routine $967B, read by unused routine $9696
$7E:801E: Death flag
$7E:8020: Body death flag
$7E:8026: Head hidden flag
$7E:8028: Previous head hidden flag
$7E:802A: Hole collision disabled flag
$7E:802C: Target position history index. Set when Botwoon's head reaches target hole, body projectiles disappear when they reach this
$7E:802E: Target hole index
{
    0: Left
    8: Bottom
    10h: Top
    18h: Right
}
$7E:8030: Speed. Used as number of movement data entries to move or px/frame depending on movement function
$7E:8032: Target hole angle using the usual SM angle convention (never read)
$7E:8034: Target hole angle using the common maths angle convention
$7E:8036: Instruction list
{
    $9341: Mouth closed - aiming up-left
    $9349: Mouth closed - aiming left
    $9351: Mouth closed - aiming down-left
    $9361: Mouth closed - aiming down (facing right)
    $9369: Mouth closed - aiming down-right
    $9371: Mouth closed - aiming right
    $9379: Mouth closed - aiming up-right
    $9381: Mouth closed - aiming up (facing right)
    $9389: Hide
    $939F: Spit - aiming up-left
    $93AF: Spit - aiming left
    $93BF: Spit - aiming down-left
    $93DF: Spit - aiming down (facing right)
    $93EF: Spit - aiming down-right
    $93FF: Spit - aiming right
    $940F: Spit - aiming up-right
    $941F: Spit - aiming up (facing right)
    $9435: Hidden - aiming up-left
    $943B: Hidden - aiming left
    $9441: Hidden - aiming down-left
    $944D: Hidden - aiming down (facing right)
    $9453: Hidden - aiming down-right
    $9459: Hidden - aiming right
    $945F: Hidden - aiming up-right
    $9465: Hidden - aiming up (facing right)
}
$7E:8038: Going through hole flag
$7E:803A: Spit angle
$7E:803C: Tail showing flag
$7E:803E: Speed table index. Used for both Botwoon movement and spit projectile movement, although Botwoon only spits when this index is 0

$7E:8800: Movement table index
$7E:8802: Set to 0 when Botwoon reaches end of movement data
$7E:8804: Movement data pointer
$7E:8808: Movement direction
{
    0: Forwards
    FFFFh: Backwards
}
$7E:8816: Set to 0 sometimes, never read
$7E:8818: Previous health during enemy shot
$7E:881C: Palette data offset (should be 1E0h)
$7E:881E: Health-based palette index. Multiple of 2
$7E:8820: X position 1 frame ago
$7E:8822: Y position 1 frame ago
$7E:8824: X position 2 frames ago
$7E:8826: Y position 2 frames ago
$7E:8828: X position 3 frames ago
$7E:882A: Y position 3 frames ago
$7E:882C: X position 4 frames ago
$7E:882E: Y position 4 frames ago
$7E:8832: Initial leave hole action flag. Initialised to 1, set to 0 after leave hole action determined, makes the initial action movement (as opposed to spitting)
$7E:8834: Spitting flag
$7E:8836: Max health. Never read
$7E:8838: Max health * 1/2
$7E:883A: Max health * 1/4
$7E:883E: Body death flag
}


;;; Enemy population ;;;
{
 ________________________________________ Enemy ID
|      __________________________________ X position
|     |     _____________________________ Y position
|     |    |      _______________________ Initialisation parameter
|     |    |     |      _________________ Properties. 2000h = process instructions, 800h = process whilst off-screen
|     |    |     |     |     ____________ Extra properties
|     |    |     |     |    |      ______ Parameter 1
|     |    |     |     |    |     |     _ Parameter 2
|     |    |     |     |    |     |    |
; Debug
F293, 0100,0100, 0000, 2800,0000, 0000,0000

; Room $D95E. Botwoon
F293, 0080,0080, 0000, 2800,0000, 0000,0000
}


;;; Enemy header ;;;
{
1800    ; 0: Tile data size
9319    ; 2: Palette
0BB8    ; 4: Health
0078    ; 6: Damage
0008    ; 8: Width
0008    ; Ah: Height
B3      ; Ch: Bank
00      ; Dh: Hurt AI time
005F    ; Eh: Cry
0009    ; 10h: Boss ID
9583    ; 12h: Initialisation AI
0001    ; 14h: Number of parts
9668    ; 18h: Main AI
800F    ; 1Ah: Grapple AI
804C    ; 1Ch: Hurt AI
8041    ; 1Eh: Frozen AI
0000    ; 20h: Time is frozen AI
0000    ; 22h: Death animation
A041    ; 28h: Power bomb reaction
0000    ; 2Ah: Sidehopper variant index
9FFF    ; 30h: Enemy touch
A016    ; 32h: Enemy shot
B7E300  ; 36h: Tile data
05      ; 39h: Layer
F344    ; 3Ah: Drop chances ($B4)
F118    ; 3Ch: Vulnerabilities ($B4)
DDDD    ; 3Eh: Enemy name ($B4)
}


;;; Enemy vulnerabilities ;;;
{
; Vulnerability format:
;     v = fddddddd
;     If v = FFh:
;         Freeze, no damage
;     Else:
;         d: Damage multiplier * 2
;         f: Does not freeze

80 ; Power
80 ; Wave
80 ; Ice
80 ; Ice + wave
80 ; Spazer
80 ; Spazer + wave
80 ; Spazer + ice
80 ; Spazer + ice + wave
80 ; Plasma
80 ; Plasma + wave
80 ; Plasma + ice
80 ; Plasma + ice + wave
  
82 ; Missile
82 ; Super missile
80 ; Bomb
80 ; Power bomb
80 ; Speed booster
80 ; Shinespark
80 ; Screw attack
02 ; Charged beam
80 ; Pseudo screw attack
80 ; Unused
}


;;; Enemy drop chances ;;;
{
00 ;        Small health
82 ;  51.0% Big health
3C ;  23.5% Missiles
05 ;   2.0% Nothing
1E ;  11.8% Super missiles
1E ;  11.8% Power bombs
}