Entry 119

"The runners' dust: ccEffPawSmoke at Kite's and the party's feet"

2026-09-25battlerendertest

Filescrates/piney-effect/src/dust.rscrates/piney-effect/src/lib.rscrates/piney-effect/examples/particle_probe.rscrates/piney-game/src/fx.rstools/test_effect_particle_rs.pydocs/engine/effects.mddocs/engine/particles.md

Kite's and the members' rules already raise Out::PawSmoke { speed } as they run (118 listed it among effSmoke's relatives still missing). It is now drawn.

ccEffPawSmoke (main 0x001ce640)

• Which foot. The character's clump's OBJ_t0 l foot and OBJ_t0 r foot nodes are found (GetObjAdrsF) and their LW matrices made. The puff rises at the lower of the two.
• The ground. Under that foot, ccLandHitCheck then checkHitResultAttlibute:
  • water and grass (0xb0c000, 0xc0d000, 0x60b0d0, 0x70c0e0, 0x8080f0) raise nothing;
  • the grey and dark grounds give texture 4;
  • the rest give 133.
• The puff. One particle on effect.cpp's second static generator, ccpgPawSmoke:
  • thrown back along the heading at 0.1 x 0.0375 x speed x (10 - rand() % 5);
  • it lives 10 less up to 5 frames;
  • size 1.5, fades 1024 in and 64 out, a random turn.

The port's eff_paw_smoke takes the two feet's places. fx.rs poses them from the runner's actor (Body::worlds of its play under its root) and asks the ground through a new Host::ground_attribute, which the battle host answers from Hits::land and Hits::attribute.

Checked

• test_effect_particle_rs.py's test_paw_smoke. It runs the game's ccEffPawSmoke in eemu on a character whose feet nodes are stubbed:

  • GetObjAdrsF answers two unparented nodes at the chosen places, so their LW matrices are copied from the local ones;
  • ccLandHitCheck is answered, and checkHitResultAttlibute gives the chosen ground.

  Eight runs of 20-60 steps, a step a frame, with either foot lower, random speeds and every kind of ground. 635 frames of the whole particle state match, including when no puff is made.

• story_4_shots. A run shot shows a grey puff at Kite's heel as he runs down the dungeon's corridor. Field 14's grass raises none, as in the game.

• The workspace's tests, clippy and fmt pass.