[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | sctrak.c -- advance the score to a given frame
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| 4 | Version 28 -- 1988-09-23 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #undef DEBUGGER /* define to enable debug trace */
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| 9 |
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| 10 | #undef DEBUG_TR /* define for sc_trak() debug */
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| 11 |
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| 12 | #undef CHECKPTR /* define to check pointers */
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| 13 |
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| 14 | #include "debug.h"
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| 15 |
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| 16 | #include "hwdefs.h"
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| 17 | #include "stddefs.h"
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| 18 | #include "score.h"
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| 19 | #include "scfns.h"
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| 20 | #include "memory.h"
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| 21 | #include "slice.h"
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| 22 |
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| 23 | #ifdef DEBUG_TR
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| 24 | extern short debugsw;
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| 25 | #endif
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| 26 |
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| 27 | extern short ancmsw;
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| 28 | extern short dubsw;
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| 29 | extern short ndisp;
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| 30 | extern short recsw;
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| 31 | extern short sbase;
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| 32 | extern short sd;
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| 33 | extern short se;
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| 34 | extern short soffset;
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| 35 |
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| 36 | extern short grpmode[];
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| 37 | extern short grpstat[];
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| 38 |
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| 39 | extern short varmode[][16];
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| 40 |
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| 41 | extern struct gdsel *gdfsep;
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| 42 |
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| 43 | extern struct gdsel *gdstbc[];
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| 44 | extern struct gdsel *gdstbn[];
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| 45 | extern struct gdsel *gdstbp[];
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| 46 |
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| 47 | /* |
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| 48 |
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| 49 | */
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| 50 |
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| 51 | /*
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| 52 | =============================================================================
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| 53 | sc_trak(tval) -- position score display such that t_ctr EQ 'tval'
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| 54 | Assumes that the pointers are correct.
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| 55 | =============================================================================
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| 56 | */
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[0580615] | 57 |
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[f40a309] | 58 | int sc_trak(long tval)
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| 59 | {
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| 60 | register struct s_entry *rpb, *rpc, *rpf;
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| 61 | register long rtb, rtc, rtf;
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| 62 | register short mod48 = 48;
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| 63 | struct gdsel *gdsp;
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| 64 |
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| 65 | DB_ENTR("sc_trak");
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| 66 |
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| 67 | if (ndisp NE 2) {
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| 68 |
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| 69 | DB_EXIT("sc_trak - ndisp NE 2");
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| 70 | return(FAILURE);
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| 71 | }
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| 72 |
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| 73 | #ifdef CHECKPTR
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| 74 | Pcheck(p_fwd, "p_fwd - sc_trak - entry");
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| 75 | Pcheck(p_ctr, "p_ctr - sc_trak - entry");
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| 76 | Pcheck(p_bak, "p_bak - sc_trak - entry");
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| 77 | #endif
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| 78 |
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| 79 | if ((p_fwd EQ E_NULL) OR (p_ctr EQ E_NULL) OR (p_bak EQ E_NULL)) {
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| 80 |
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| 81 | DB_EXIT("sc_trak - NULL ptr");
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| 82 | return(FAILURE);
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| 83 | }
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| 84 | /* |
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| 85 |
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| 86 | */
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| 87 | if (v_regs[5] & 0x0180) /* setup for VSDD bank 0 */
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| 88 | vbank(0);
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| 89 |
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| 90 | rpf = p_fwd; /* forward event pointer */
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| 91 | rtf = t_fwd; /* forward event time */
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| 92 |
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| 93 | rpc = p_ctr; /* current event pointer */
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| 94 | rtc = t_ctr; /* current event time */
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| 95 |
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| 96 | rpb = p_bak; /* backward event pointer */
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| 97 | rtb = t_bak; /* backward event time */
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| 98 |
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| 99 | #ifdef DEBUG_TR
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| 100 | if (debugsw) {
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| 101 |
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| 102 | printf("\n## sc_trak(%10ld) ENTRY - fc_val=%10ld sd = %s sbase=%d soffset=%d\n",
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| 103 | tval, fc_val, sd ? "BAK" : "FWD", sbase, soffset);
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| 104 |
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| 105 | printf(" p_bak: %08lX p_ctr: %08lX p_fwd: %08lX\n",
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| 106 | p_bak, p_ctr, p_fwd);
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| 107 |
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| 108 | printf(" t_bak: %10ld t_ctr: %10ld t_fwd: %10ld\n",
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| 109 | t_bak, t_ctr, t_fwd);
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| 110 |
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| 111 | printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
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| 112 | p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
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| 113 | }
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| 114 | #endif
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| 115 |
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| 116 | /* |
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| 117 |
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| 118 | */
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| 119 | DB_CMNT("sc_trak - update loop");
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| 120 |
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| 121 | if (sd EQ D_FWD) { /* scroll forward */
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| 122 |
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| 123 | DB_CMNT("sc_trak - forward");
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| 124 |
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| 125 | while (rtc++ LT tval) { /* advance to tval */
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| 126 |
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| 127 | sreset(); /* reset highlighting */
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| 128 |
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| 129 | ++rtb; /* update target time at p_bak */
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| 130 | ++rtf; /* update target time at p_fwd */
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| 131 |
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| 132 | if (rpb->e_type NE EV_FINI) { /* up to end of score */
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| 133 |
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| 134 | while (rpb->e_time EQ rtb) { /* check event time */
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| 135 |
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| 136 | se_disp(rpb, D_FWD, gdstbp, 0); /* display event */
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| 137 | rpb = rpb->e_fwd; /* point at next event */
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| 138 |
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| 139 | if (rpb->e_type EQ EV_FINI) /* stop at end of score */
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| 140 | break;
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| 141 | }
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| 142 | }
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| 143 |
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| 144 | if (0 EQ (rtb % mod48)) { /* handle beat markers */
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| 145 |
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| 146 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 147 |
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| 148 | gdfsep = gdsp->next;
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| 149 |
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| 150 | gdsp->next = gdstbp[12];
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| 151 | gdsp->note = 0x1111;
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| 152 | gdsp->code = 1;
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| 153 |
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| 154 | gdstbp[12] = gdsp;
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| 155 | }
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| 156 | }
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| 157 | /* |
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| 158 |
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| 159 | */
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| 160 | if (rpc->e_type NE EV_FINI) { /* up to end of score */
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| 161 |
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| 162 | while (rpc->e_time EQ rtc) { /* check event time */
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| 163 |
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| 164 | se_disp(rpc, D_FWD, gdstbc, 1); /* display event */
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| 165 | rpc = rpc->e_fwd; /* point at next event */
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| 166 |
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| 167 | if (rpc->e_type EQ EV_FINI) /* stop at end of score */
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| 168 | break;
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| 169 | }
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| 170 | }
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| 171 |
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| 172 | if (rpf->e_type NE EV_FINI) { /* up to end of score */
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| 173 |
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| 174 | while (rpf->e_time EQ rtf) { /* check event time */
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| 175 |
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| 176 | se_disp(rpf, D_FWD, gdstbn, 0); /* display event */
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| 177 | rpf = rpf->e_fwd; /* next event pointer */
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| 178 |
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| 179 | if (rpf->e_type EQ EV_FINI) /* stop at end of score */
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| 180 | break;
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| 181 | }
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| 182 | }
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| 183 |
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| 184 | if (0 EQ (rtf % mod48)) { /* handle beat markers */
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| 185 |
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| 186 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 187 |
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| 188 | gdfsep = gdsp->next;
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| 189 |
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| 190 | gdsp->next = gdstbn[12];
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| 191 | gdsp->note = 0x1111;
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| 192 | gdsp->code = 1;
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| 193 |
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| 194 | gdstbn[12] = gdsp;
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| 195 | }
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| 196 | }
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| 197 |
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| 198 | sc_adv(); /* scroll the display */
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| 199 | }
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| 200 |
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| 201 | /* |
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| 202 |
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| 203 | */
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| 204 | } else { /* scroll backward */
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| 205 |
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| 206 | DB_CMNT("sc_trak - backward");
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| 207 |
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| 208 | while (rtc-- GT tval) { /* advance to tval */
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| 209 |
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| 210 | sreset(); /* reset highlighting */
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| 211 |
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| 212 | --rtb; /* update target time at p_bak */
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| 213 | --rtf; /* update target time at p_fwd */
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| 214 |
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| 215 | if (rpb->e_type NE EV_SCORE) { /* up to start of score */
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| 216 |
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| 217 | while (rpb->e_time EQ rtb) { /* check event time */
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| 218 |
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| 219 | se_disp(rpb, D_BAK, gdstbp, 0);
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| 220 | rpb = rpb->e_bak; /* point at next event */
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| 221 |
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| 222 | if (rpb->e_type EQ EV_SCORE) /* stop at end of score */
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| 223 | break;
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| 224 | }
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| 225 | }
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| 226 |
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| 227 | if (0 EQ (rtb % mod48)) { /* handle beat markers */
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| 228 |
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| 229 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 230 |
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| 231 | gdfsep = gdsp->next;
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| 232 |
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| 233 | gdsp->next = gdstbp[12];
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| 234 | gdsp->note = 0x1111;
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| 235 | gdsp->code = 1;
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| 236 |
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| 237 | gdstbp[12] = gdsp;
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| 238 | }
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| 239 | }
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| 240 | /* |
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| 241 |
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| 242 | */
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| 243 | if (rpc->e_type NE EV_SCORE) { /* up to start of score */
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| 244 |
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| 245 | while (rpc->e_time EQ rtc) { /* check event time */
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| 246 |
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| 247 | se_disp(rpc, D_BAK, gdstbc, 1); /* display event */
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| 248 | rpc = rpc->e_bak; /* point at next event */
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| 249 |
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| 250 | if (rpc->e_type EQ EV_SCORE) /* stop at end of score */
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| 251 | break;
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| 252 | }
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| 253 | }
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| 254 |
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| 255 | if (rpf->e_type NE EV_SCORE) { /* up to end of score */
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| 256 |
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| 257 | while (rpf->e_time EQ rtf) { /* check event time */
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| 258 |
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| 259 | se_disp(rpf, D_BAK, gdstbn, 0); /* display event */
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| 260 | rpf = rpf->e_bak; /* next event pointer */
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| 261 |
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| 262 | if (rpf->e_type EQ EV_SCORE) /* stop at end of score */
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| 263 | break;
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | if (0 EQ (rtf % mod48)) { /* handle beat markers */
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| 268 |
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| 269 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 270 |
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| 271 | gdfsep = gdsp->next;
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| 272 |
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| 273 | gdsp->next = gdstbn[12];
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| 274 | gdsp->note = 0x1111;
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| 275 | gdsp->code = 1;
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| 276 |
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| 277 | gdstbn[12] = gdsp;
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| 278 | }
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| 279 | }
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| 280 |
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| 281 | sc_adv(); /* scroll the display */
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| 282 | }
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| 283 | }
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| 284 | /* |
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| 285 |
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| 286 | */
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| 287 | p_fwd = rpf; /* update p_fwd */
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| 288 | t_fwd = tval + TO_FWD; /* update t_fwd */
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| 289 |
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| 290 | p_ctr = rpc; /* update p_ctr */
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| 291 | t_ctr = tval; /* update t_ctr */
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| 292 |
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| 293 | p_bak = rpb; /* update p_bak */
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| 294 | t_bak = tval - TO_BAK; /* update t_bak */
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| 295 |
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| 296 | DB_CMNT("sc_trak - dslocn");
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| 297 | dslocn(); /* display current location */
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| 298 |
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| 299 | #ifdef DEBUG_TR
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| 300 | if (debugsw) {
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| 301 |
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| 302 | printf("\n## sc_trak(%10ld) EXIT - fc_val=%10ld sbase=%d soffset=%d\n",
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| 303 | tval, fc_val, sbase, soffset);
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| 304 |
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| 305 | printf(" p_bak: %08lX, p_ctr: %08lX, p_fwd: %08lX\n",
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| 306 | p_bak, p_ctr, p_fwd);
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| 307 |
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| 308 | printf(" t_bak: %10ld, t_ctr: %10ld, t_fwd: %10ld\n",
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| 309 | t_bak, t_ctr, t_fwd);
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| 310 |
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| 311 | printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
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| 312 | p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
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| 313 | }
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| 314 | #endif
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| 315 |
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| 316 | DB_EXIT("sc_trak");
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| 317 | return(SUCCESS);
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| 318 | }
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| 319 |
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| 320 | /* |
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| 321 |
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[0580615] | 322 | */
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[f40a309] | 323 |
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| 324 | /*
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| 325 | =============================================================================
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| 326 | sc_trek(tval) -- follow score chain such that t_cur EQ 'tval'
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| 327 | =============================================================================
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| 328 | */
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| 329 |
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| 330 | int sc_trek(long tval)
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| 331 | {
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| 332 | register struct s_entry *rp, *ep;
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| 333 | register long tc, rt;
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| 334 | register short et, grp;
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| 335 |
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| 336 | DB_ENTR("sc_trek");
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| 337 |
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| 338 | #ifdef CHECKPTR
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| 339 | Pcheck(p_cur, "p_cur - sc_trek - entry");
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| 340 | #endif
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| 341 |
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| 342 | if (p_cur EQ E_NULL) {
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| 343 |
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| 344 | DB_EXIT("sc_trek - NULL ptr");
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| 345 | return(FAILURE);
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| 346 | }
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| 347 |
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| 348 | rp = p_cur; /* current event pointer */
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| 349 | rt = t_cur; /* current event time */
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| 350 |
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| 351 | DB_CMNT("sc_trek - chasing p_cur");
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| 352 |
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| 353 | #ifdef DEBUGGER
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| 354 | if (se EQ D_FWD)
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| 355 | DB_CMNT("sc_trek - forward");
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| 356 | else
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| 357 | DB_CMNT("sc_trek - backward");
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| 358 | #endif
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| 359 |
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| 360 | /* |
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| 361 |
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| 362 | */
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| 363 | while (rt NE tval) { /* track tval */
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| 364 |
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| 365 | if (se EQ D_FWD)
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| 366 | ++rt;
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| 367 | else
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| 368 | --rt;
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| 369 |
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| 370 | if (rp->e_type NE EV_FINI) {
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| 371 |
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| 372 | while (rp->e_time EQ rt) { /* process events a rt */
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| 373 |
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| 374 | /* "erase head" logic */
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| 375 |
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| 376 | if (recsw AND (se EQ D_FWD)) {
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| 377 |
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| 378 | et = 0x007F & rp->e_type;
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| 379 |
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| 380 | if ((NOT dubsw) AND
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| 381 | ((et EQ EV_NBEG) OR (et EQ EV_NEND))) {
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| 382 |
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| 383 | grp = rp->e_data2;
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| 384 |
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| 385 | if (grpstat[grp] AND (2 EQ grpmode[grp])) {
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| 386 |
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| 387 | DB_CMNT("sc_trek - erasing note");
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| 388 |
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| 389 | /* erasing a note */
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| 390 |
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| 391 | ep = rp->e_fwd;
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| 392 |
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| 393 | if (rp EQ p_bak)
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| 394 | p_bak = ep;
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| 395 |
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| 396 | if (rp EQ p_cur)
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| 397 | p_cur = ep;
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| 398 |
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| 399 | if (rp EQ p_ctr)
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| 400 | p_ctr = ep;
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| 401 |
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| 402 | if (rp EQ p_fwd)
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| 403 | p_fwd = ep;
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| 404 |
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| 405 | e_del(e_rmv(rp));
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| 406 | rp = ep;
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| 407 | goto nextev;
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| 408 | }
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| 409 | /* |
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| 410 |
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| 411 | */
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| 412 | } else if (et EQ EV_ANVL) {
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| 413 |
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| 414 | grp = 0x000F & rp->e_data1;
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| 415 |
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| 416 | if (grpstat[grp] AND (2 EQ (ancmsw ?
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| 417 | varmode[0x000F & (rp->e_data1 >> 4)][grp] :
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| 418 | grpmode[grp]))) {
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| 419 |
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| 420 | DB_CMNT("sc_trek - erasing var");
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| 421 |
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| 422 | /* erasing an analog variable */
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| 423 |
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| 424 | ep = rp->e_fwd;
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| 425 |
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| 426 | if (rp EQ p_bak)
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| 427 | p_bak = ep;
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| 428 |
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| 429 | if (rp EQ p_cur)
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| 430 | p_cur = ep;
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| 431 |
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| 432 | if (rp EQ p_ctr)
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| 433 | p_ctr = ep;
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| 434 |
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| 435 | if (rp EQ p_fwd)
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| 436 | p_fwd = ep;
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| 437 |
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| 438 | e_del(e_rmv(rp));
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| 439 | rp = ep;
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| 440 | goto nextev;
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| 441 | }
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| 442 | }
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| 443 | }
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| 444 |
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| 445 | if (rp->e_time EQ rt) { /* check event time */
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| 446 |
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| 447 | se_exec(rp, se); /* execute event */
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| 448 |
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| 449 | if (se EQ D_FWD)
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| 450 | rp = rp->e_fwd; /* point at next event */
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| 451 | else
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| 452 | rp = rp->e_bak; /* point at next event */
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| 453 | }
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| 454 |
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| 455 | nextev:
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| 456 | if (((se EQ D_FWD) AND (rp->e_type EQ EV_FINI)) OR
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| 457 | ((se EQ D_BAK) AND (rp->e_type EQ EV_SCORE)))
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| 458 | break;
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| 459 | }
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| 460 | }
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| 461 | }
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| 462 | /* |
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| 463 |
|
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| 464 | */
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| 465 | p_cur = rp; /* update p_cur */
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| 466 | t_cur = tval; /* update t_cur */
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| 467 |
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| 468 | DB_EXIT("sc_trek");
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| 469 | return(SUCCESS);
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| 470 | }
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