Stun gauge

References

1. ^ abIn the PS2 port of Street Fighter III: 3rd Strike that crowded-street/3s-decomp rebuilds, each character's stun limit (genkai) is its pl_piyo_tbl value, 56, 64, or 72, plus an Extra Option offset of −16, −8, 0, 8, or 16, held to 56 to 72. A hit that finds the defender neither knocked out nor already stunned, and doesn't knock it out, adds dm_piyo to the gauge: the _add_piyo_gauge value for the attacker's character and the move's stun value (the low four bits of its piyo byte), scaled by an Extra Option factor of 0, 24, 32, or 44 over 32. A parried hit adds none (sf3/parry-freeze). When the gauge reaches the limit, the stun flag (py->flag) is set. Outside hit stop, and while the timers aren't frozen (Timer_Freeze), the gauge drains each pass by the character's pl_nr_piyo_tbl value times an Extra Option factor (0, 20, 32, or 44) over 32, taken from a 32-bit count whose top 16 bits are the gauge (2730 to 3276 in the first ten entries, about 0.042 to 0.050 a pass at the factor 32, computed). Which Extra Option factor applies by default isn't shown in the lines read. Code in PLPAT02.c, plpat16.c, and plpat17.c multiplies a character's recover by 110/100 each time it runs while tk_success is below 3, and plpat18.c by 120/100 while it's 0 or less.Codecrowded-street/3s-decomprevised
   How we know

   290const s16 pl_piyo_tbl[20] = { 72, 72, 64, 64, 72, 64, 72, 64, 64, 72, 64, 64, 64, 64, 56, 64, 64, 72, 64, 56 };
   ⋮
   292const s32 pl_nr_piyo_tbl[20] = { 3276, 2849, 2978, 2730, 2978, 2849, 3120, 2730, 2978, 2730,
   

   1371    piyori_type[ix].recover = pl_nr_piyo_tbl[plnum];
   1372    piyori_type[ix].genkai = pl_piyo_tbl[plnum] + stun_gauge_len_omake[omop_stun_gauge_len[ix]];
   ⋮
   1374    if (piyori_type[ix].genkai < 56) {
   1375        piyori_type[ix].genkai = 56;
   ⋮
   1378    if (piyori_type[ix].genkai > 72) {
   1379        piyori_type[ix].genkai = 72;
   

   39const s16 stun_gauge_omake[4] = { 0, 24, 32, 44 };
   ⋮
   41const s16 stun_gauge_r_omake[4] = { 0, 20, 32, 44 };
   ⋮
   43const s16 stun_gauge_len_omake[5] = { -16, -8, 0, 8, 16 };
   

   961    cal_damage_vitality(as, ds);
   962    ds->wu.dm_piyo = _add_piyo_gauge[as->player_number][as->wu.att.piyo];
   963    ds->wu.dm_piyo = ds->wu.dm_piyo * stun_gauge_omake[omop_stun_gauge_add[(ds->wu.id + 1) & 1]] / 32;
   

   2810    wk->att.piyo &= 0xF;
   

   1533void subtract_dm_vital(PLW* wk) {
   1534    if (wk->dead_flag == 0) {
   

   1563        if (wk->wu.vital_new < 0) {
   1564            wk->wu.vital_new = -1;
   1565            wk->dead_flag = 1;
   ⋮
   1576        } else if (wk->py->flag == 0) {
   1577            wk->py->now.quantity.h += wk->wu.dm_piyo;
   ⋮
   1579            if (wk->py->now.quantity.h >= wk->py->genkai) {
   1580                wk->py->now.timer = 0;
   1581                wk->py->flag = 1;
   

   301    if (Timer_Freeze == 0) {
   302        look_after_timers(wk);
   

   415    if (wk->py->now.quantity.h && (wk->wu.hit_stop == 0)) {
   416        wk->py->now.timer -= (wk->py->recover * stun_gauge_r_omake[omop_stun_gauge_rcv[wk->wu.id]]) / 32;
   ⋮
   418        if (wk->py->now.quantity.h <= 0) {
   419            wk->py->now.timer = 0;
   

   83            if (wk->tk_success < 3) {
   84                wk->tk_success++;
   85                wk->py->recover = (wk->py->recover * 110) / 100;
   

   62            if (wk->tk_success < 3) {
   63                wk->tk_success++;
   64                wk->py->recover = (wk->py->recover * 110) / 100;
   

   305            if (wk->tk_success < 3) {
   306                wk->tk_success++;
   307                wk->py->recover = (wk->py->recover * 110) / 100;
   

   111            if (wk->tk_success <= 0) {
   112                wk->tk_success++;
   113                wk->py->recover = (wk->py->recover * 120) / 100;
   

   9typedef struct {
   10    // total size: 0x4
   11    s16 l; // offset 0x0, size 0x2
   12    s16 h; // offset 0x2, size 0x2
   13} LoHi16;
   

   262    union {
   263        s32 timer;       // offset 0x0, size 0x4
   264        LoHi16 quantity; // offset 0x0, size 0x4
   265    } now;               // offset 0x8, size 0x4
   

   Checked against the evidence by its author, an AI model, 2026-10-22.

   Revised after a check by a second AI model, 2026-10-22.

   In the claim ledger