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FUN GAME SAVE FILE FORMAT VERSION 0.1
- little endian
- 32-bit IEEE-754 floats
- UTF-8 strings which are *not* null terminated
- units are metric and 1 unit is 1 meter
- quaternions are xyzw and need normalization
- pids start at 1 and are monotonic, 0 is reserved for null parent
CHUNK LABELS
- ENTT
- TRFM
- MODL
- PHYS
DATA RECORDS
- entity record
- transform component record
- model component record
- physics component record
- physics body record
- physics shape record
- box
- sphere
- cylinder
- capsule
- convex hull
- static trimesh
- physics joint record
FILE HEADER
char[4] magic "FGSF"
u16 major
u16 minor
CHUNK
char[4] label
u32 size
u8[size] data
ENTT
u64 next_pid
u32 entity_cnt
repeat entity_cnt:
u64 pid
u32 name_len
char[name_len] name
TRFM
u32 transform_cnt
repeat transform_cnt:
u64 pid
u64 parent_pid
f32[3] pos
f32[4] rot
f32[3] scale
MODL
u32 model_cnt
repeat model_cnt:
u64 entity_pid
u32 key_len
char[key_len] key
bool(u8) draw
PHYS
u32 physics_cnt
repeat physics_cnt:
u64 pid
u32 body_cnt
body[body_cnt]
u32 joint_cnt
joint[joint_cnt]
PHYSICS BODY
f32[3] pos
f32[4] rot
f32 linear_damping
f32 angular_damping
f32 gravity_scale
u8 physics_mode
bool(u8) enable_sleep
u32 shape_cnt
shape[shape_cnt]
PHYSICS SHAPE
u8 tag
f32[3] pos
f32[4] rot
f32 density
f32 friction
f32 restitution
u32 category_bits
u32 mask_bits
switch tag:
BOX
f32[3] sz
SPHERE
f32 radius
CYLINDER or CAPSULE
f32 height
f32 radius
CONVEX HULL
u32 points_cnt
f32[points_cnt][3] points
TRIMESH
u32 point_cnt
u32 index_cnt
f32[point_cnt][3] points
u32[index_cnt] indices
PHYSICS JOINT
u8 tag
u32 body_a
u32 body_b
u32 flags
f32[3] anchor_a
f32[3] anchor_b
f32[3] axis_a
f32[3] axis_b
f32 lower
f32 upper
f32 spring_hz
f32 spring_damping
f32 motor_speed
f32 motor_force
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