BG2, BG2: ToB

This file format describes projectiles, and the files are referenced spells and projectile weapons. Projectile files can control:

• Projectile graphics
• Projectile speed
• Projectile area of effect
• Projectile sound

These files have constant length 512h bytes (single target), or 768 bytes (area effect).

Offset	Size (datatype)	Description
0x00000	4 (char array)	Signature ('PRO ')
0x00004	4 (char array)	Version ('V1.0')
0x00008	2 (word)	Projectile type 2 single target 3 area of effect
0x0000a	2 (word)	Projectile speed (0x01 to 0xFF)
0x0000c	2 (word)	Sparking flags bit 0: Sparks bit 1: Flying projectile bit 2: Looping sound bit 3: Unknown bit 4: Ignore centre
0x0000e	2 (word)	Unknown
0x00010	8 (resref)	WAVC file
0x00018	8 (resref)	WAVC file (explosion/reach destination)
0x00020	8 (resref)	WAVC file
0x00028	4 (dword)	Spark colour 0 = Crashes 1 = Black 2 = Blue 3 = Purple and amber 4 = Gold 5 = Green 6 = Purple 7 = Red 8 = White 9 = Aqua 10 = Stone 11 = Magenta 12 = Orange
0x0002c	212 (byte)	Unknown
0x00100	4 (dword)	Flags bit 0: Enable BAM colouring bit 1: Enable smoke bit 2: Unknown bit 3: Darken projectile bit 4: Unknown bit 5: Enable shadow bit 6: Enable light spot bit 7: Translucent
0x00104	8 (resref)	Projectile animation (BAM)
0x0010c	8 (resref)	Shadow animation (BAM)
0x00114	1 (byte)	Projectile number (BAM sequence)
0x00115	1 (byte)	Shadow number (BAM sequence)
0x00116	2 (word)	Light spot intensity
0x00118	2 (word)	Light spot width
0x0011a	2 (word)	Light spot height
0x0011c	8 (resref)	Palette (BMP) STTRAVL1 = Blue STTRAVL2 = Yellow STTRAVL3 = Green STTRAVL4 = Purple STTRAVL5 = Pale purple STTRAVL6 = Pink STTRAVL7 = Blue STTRAVL8 = Gold
0x00124	7 (bytes)	Projectile colours
0x0012b	1 (byte)	Smoke puff delay
0x0012c	7 (bytes)	Smoke colours
0x00133	1 (byte)	Face target granularity 1 : Do not face target 5 : Mirrored eastern directions (reduced granularity) 9 : Mirrored eastern (full granularity) 16 : Mot mirrored, not reduced
0x00134	2 (short)	Projectile smoke animation (animate.ids)
0x00136	8 (resref)	Trailing animation 1 (BAM)
0x0013e	8 (resref)	Trailing animation 2 (BAM)
0x00146	8 (resref)	Trailing animation 3 (BAM)
0x0014e	2 (word)	Trailing number 1 (BAM sequence)
0x00150	2 (word)	Trailing number 2 (BAM sequence)
0x00152	2 (word)	Trailing number 3 (BAM sequence)
0x00154	176 (bytes)	Unknown

If the projectile is an area affect projectile then an additional struct is added to the file. It has 100h (256) bytes.

Offset	Size (datatype)	Description
0x00200	2 (word)	Target flags bit 0: Projectile visible bit 1: Triggered by inanimate objects (e.g. doors) bit 2: Triggered on condition bit 3: No overlapping effects bit 4: Use secondary projectile bit 5: Use fragment graphics bit 6: Target selection* bit 7: Target selection* bit 8: Unknown bit 9: Multiple set off bit 10: Use VVC bit 11: Cone shape bit 12: Unknown bit 13: No explosion bit 14: Delayed explosion bit 15: Affect only one target *Target selection is relative to caster: 00 Affect all 01 Affect only enemies 10 Affect all 11 Affect only allies
0x00202	2 (word)	Unknown
0x00204	2 (word)	Trigger radius (divide by approx 8.5 to receive radius in feet)
0x00206	2 (word)	Area of effect (divide by approx 8.5 to receive radius in feet)
0x00208	8 (resref)	Trigger sound
0x00210	2 (word)	Explosion delay
0x00212	2 (short)	Fragment animation (animate.ids)
0x00214	2 (word)	Secondary projectile (projectl.ids-1)
0x00216	1 (byte)	Duration/Trigger count
0x00217	1 (byte)	Explosion animation (fireball.ids)
0x000218	1 (byte)	Explosion colour
0x000219	1 (byte)	Unknown
0x00021a	2 (bytes)	Explosion projectile (projectl.ids).
0x00021c	8 (resref)	Explosion animation (VVC)
0x000224	2 (word)	Cone width (0x0 to 0xFF)
0x000226	218 (bytes)	Unknown