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Tweak pacejka params a bit

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sergeypdev 2025-03-18 03:28:40 +04:00
parent 31cb9879cc
commit b6866f53f3
4 changed files with 25 additions and 14 deletions
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2
game/game.odin
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@ -393,7 +393,7 @@ update_runtime_world :: proc(runtime_world: ^Runtime_World, dt: f32) {
front_wheels := turn_wheels
back_wheels := drive_wheels
DRIVE_IMPULSE :: 4000
DRIVE_IMPULSE :: 2000
BRAKE_IMPULSE :: 500
TURN_ANGLE :: -f32(30) * math.RAD_PER_DEG
// 68% front, 32% rear

2
game/physics/pacejka.odin
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@ -4,7 +4,7 @@ import "core:math"
Pacejka96_Params :: [11]f32
DEFAULT_PACEJKA96_PARAMS :: Pacejka96_Params{1.6, 0, 1688, 0, 229, 0, 0, 0, -10, 0, 0}
DEFAULT_PACEJKA96_PARAMS :: Pacejka96_Params{1.65, 1, 1750, 0, 229, 0.0, 0, 0, -12, 0, 0}
// X is slip ratio percentage [-100, 100] or slip angle in degrees, where positive angle is turning left
// Output is the friction coefficient

2
game/physics/simulation.odin
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@ -627,7 +627,7 @@ pgs_solve_suspension :: proc(sim_state: ^Sim_State, config: Solver_Config, dt: f
vel_contact := body_vel_at_contact_patch
lateral_vel := lg.dot(right, vel_contact)
friction_clamp := -v.spring_impulse * lat_friction
friction_clamp := abs(v.spring_impulse) * lat_friction
incremental_impulse := -inv_w_normal * lateral_vel
new_total_impulse := clamp(

33
research/pacejka96.ipynb
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