devilution/2020_03_31/Source/trigs.cpp

#include "diablo.h"

BOOL townwarps[3];
BOOL trigflag;
int numtrigs;
TriggerStruct trigs[MAXTRIGGERS];
int TWarpFrom; // weak

int TownDownList[11] = { 716, 715, 719, 720, 721, 723, 724, 725, 726, 727, -1 };
int TownWarp1List[13] = { 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1178, 1179, 1181, 1183, 1185, -1 };
int L1UpList[12] = { 127, 129, 130, 131, 132, 133, 135, 137, 138, 139, 140, -1 };
int L1DownList[10] = { 106, 107, 108, 109, 110, 112, 114, 115, 118, -1 };
int L2UpList[3] = { 266, 267, -1 };
int L2DownList[5] = { 269, 270, 271, 272, -1 };
int L2TWarpUpList[3] = { 558, 559, -1 };
int L3UpList[15] = { 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, -1 };
int L3DownList[9] = { 162, 163, 164, 165, 166, 167, 168, 169, -1 };
int L3TWarpUpList[14] = { 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, -1 };
int L4UpList[4] = { 82, 83, 90, -1 };
int L4DownList[6] = { 120, 130, 131, 132, 133, -1 };
int L4TWarpUpList[4] = { 421, 422, 429, -1 };
int L4PentaList[33] = { 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, -1 };

void InitNoTriggers()
{
	numtrigs = 0;
	trigflag = FALSE;
}

void InitTownTriggers()
{
	int i;

	trigs[0]._tx = 25;
	trigs[0]._ty = 29;
	trigs[0]._tmsg = WM_DIABNEXTLVL;

	numtrigs = 1;

	if(gbMaxPlayers == 4) {
		for(i = 0; i < 3; i++) {
			townwarps[i] = TRUE;
		}
		trigs[1]._tx = 49;
		trigs[1]._ty = 21;
		trigs[1]._tmsg = WM_DIABTOWNWARP;
		trigs[1]._tlvl = 5;
		trigs[2]._tx = 17;
		trigs[2]._ty = 69;
		trigs[2]._tmsg = WM_DIABTOWNWARP;
		trigs[2]._tlvl = 9;
		trigs[3]._tx = 41;
		trigs[3]._ty = 80;
		trigs[3]._tmsg = WM_DIABTOWNWARP;
		trigs[3]._tlvl = 13;
		numtrigs = 4;
	} else {
		for(i = 0; i < 3; i++) {
			townwarps[i] = FALSE;
		}
		if(plr[myplr].pTownWarps & 1) {
			trigs[1]._tx = 49;
			trigs[1]._ty = 21;
			trigs[1]._tmsg = WM_DIABTOWNWARP;
			trigs[1]._tlvl = 5;
			numtrigs = 2;
			townwarps[0] = TRUE;
		}
		if(plr[myplr].pTownWarps & 2) {
			townwarps[1] = TRUE;
			trigs[numtrigs]._tx = 17;
			trigs[numtrigs]._ty = 69;
			trigs[numtrigs]._tmsg = WM_DIABTOWNWARP;
			trigs[numtrigs]._tlvl = 9;
			numtrigs++;
		}
		if(plr[myplr].pTownWarps & 4) {
			townwarps[2] = TRUE;
			trigs[numtrigs]._tx = 41;
			trigs[numtrigs]._ty = 80;
			trigs[numtrigs]._tmsg = WM_DIABTOWNWARP;
			trigs[numtrigs]._tlvl = 13;
			numtrigs++;
		}
	}

	trigflag = FALSE;
}

void InitL1Triggers()
{
	int i, j;

	numtrigs = 0;

	for(j = 0; j < MAXDUNY; j++) {
		for(i = 0; i < MAXDUNX; i++) {
			if(dPiece[i][j] == 129) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABPREVLVL;
				numtrigs++;
			}
			if(dPiece[i][j] == 115) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABNEXTLVL;
				numtrigs++;
			}
		}
	}

	trigflag = FALSE;
}

void InitL2Triggers()
{
	int i, j;

	numtrigs = 0;

	for(j = 0; j < MAXDUNY; j++) {
		for(i = 0; i < MAXDUNX; i++) {
			if(dPiece[i][j] == 267 && (i != quests[Q_SCHAMB]._qtx || j != quests[Q_SCHAMB]._qty)) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABPREVLVL;
				numtrigs++;
			}
			if(dPiece[i][j] == 559) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABTWARPUP;
				trigs[numtrigs]._tlvl = 0;
				numtrigs++;
			}
			if(dPiece[i][j] == 271) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABNEXTLVL;
				numtrigs++;
			}
		}
	}

	trigflag = FALSE;
}

void InitL3Triggers()
{
	int i, j;

	numtrigs = 0;

	for(j = 0; j < MAXDUNY; j++) {
		for(i = 0; i < MAXDUNX; i++) {
			if(dPiece[i][j] == 171) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABPREVLVL;
				numtrigs++;
			}
			if(dPiece[i][j] == 168) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABNEXTLVL;
				numtrigs++;
			}
			if(dPiece[i][j] == 549) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABTWARPUP;
				numtrigs++;
			}
		}
	}

	trigflag = FALSE;
}

void InitL4Triggers()
{
	int i, j;

	numtrigs = 0;

	for(j = 0; j < MAXDUNY; j++) {
		for(i = 0; i < MAXDUNX; i++) {
			if(dPiece[i][j] == 83) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABPREVLVL;
				numtrigs++;
			}
			if(dPiece[i][j] == 422) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABTWARPUP;
				trigs[numtrigs]._tlvl = 0;
				numtrigs++;
			}
			if(dPiece[i][j] == 120) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABNEXTLVL;
				numtrigs++;
			}
		}
	}
	for(j = 0; j < MAXDUNY; j++) {
		for(i = 0; i < MAXDUNX; i++) {
			if(dPiece[i][j] == 370 && quests[Q_BETRAYER]._qactive == 3) {
				trigs[numtrigs]._tx = i;
				trigs[numtrigs]._ty = j;
				trigs[numtrigs]._tmsg = WM_DIABNEXTLVL;
				numtrigs++;
			}
		}
	}

	trigflag = FALSE;
}

void InitSKingTriggers()
{
	numtrigs = 1;
	trigs[0]._tx = 82;
	trigs[0]._ty = 42;
	trigs[0]._tmsg = WM_DIABRTNLVL;
	trigflag = FALSE;
}

void InitSChambTriggers()
{
	numtrigs = 1;
	trigs[0]._tx = 70;
	trigs[0]._ty = 39;
	trigs[0]._tmsg = WM_DIABRTNLVL;
	trigflag = FALSE;
}

void InitPWaterTriggers()
{
	numtrigs = 1;
	trigs[0]._tx = 30;
	trigs[0]._ty = 83;
	trigs[0]._tmsg = WM_DIABRTNLVL;
	trigflag = FALSE;
}

void InitVPTriggers()
{
	numtrigs = 1;
	trigs[0]._tx = 35;
	trigs[0]._ty = 32;
	trigs[0]._tmsg = WM_DIABRTNLVL;
	trigflag = FALSE;
}

BOOL ForceTownTrig()
{
	int i;

	for(i = 0; TownDownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == TownDownList[i]) {
			strcpy(infostr, "Down to dungeon");
			cursmx = 25;
			cursmy = 29;
			return TRUE;
		}
	}
	if(townwarps[0]) {
		for(i = 0; TownWarp1List[i] != -1; i++) {
			if(dPiece[cursmx][cursmy] == TownWarp1List[i]) {
				strcpy(infostr, "Down to catacombs");
				cursmx = 49;
				cursmy = 21;
				return TRUE;
			}
		}
	}
	if(townwarps[1]) {
		for(i = 1199; i <= 1220; i++) {
			if(dPiece[cursmx][cursmy] == i) {
				strcpy(infostr, "Down to caves");
				cursmx = 17;
				cursmy = 69;
				return TRUE;
			}
		}
	}
	if(townwarps[2]) {
		for(i = 1240; i <= 1255; i++) {
			if(dPiece[cursmx][cursmy] == i) {
				strcpy(infostr, "Down to hell");
				cursmx = 41;
				cursmy = 80;
				return TRUE;
			}
		}
	}

	return FALSE;
}

BOOL ForceL1Trig()
{
	int i, j;

	for(i = 0; L1UpList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L1UpList[i]) {
			if(currlevel > 1) {
				sprintf(infostr, "Up to level %i", currlevel - 1);
			} else {
				strcpy(infostr, "Up to town");
			}
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABPREVLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	for(i = 0; L1DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L1DownList[i]) {
			sprintf(infostr, "Down to level %i", currlevel + 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABNEXTLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}

	return FALSE;
}

BOOL ForceL2Trig()
{
	int i, j, dx, dy;

	for(i = 0; L2UpList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L2UpList[i]) {
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABPREVLVL) {
					dx = abs(trigs[j]._tx - cursmx);
					dy = abs(trigs[j]._ty - cursmy);
					if(dx < 4 && dy < 4) {
						sprintf(infostr, "Up to level %i", currlevel - 1);
						cursmx = trigs[j]._tx;
						cursmy = trigs[j]._ty;
						return TRUE;
					}
				}
			}
		}
	}
	for(i = 0; L2DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L2DownList[i]) {
			sprintf(infostr, "Down to level %i", currlevel + 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABNEXTLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	if(currlevel == 5) {
		for(i = 0; L2TWarpUpList[i] != -1; i++) {
			if(dPiece[cursmx][cursmy] == L2TWarpUpList[i]) {
				for(j = 0; j < numtrigs; j++) {
					if(trigs[j]._tmsg == WM_DIABTWARPUP) {
						dx = abs(trigs[j]._tx - cursmx);
						dy = abs(trigs[j]._ty - cursmy);
						if(dx < 4 && dy < 4) {
							strcpy(infostr, "Up to town");
							cursmx = trigs[j]._tx;
							cursmy = trigs[j]._ty;
							return TRUE;
						}
					}
				}
			}
		}
	}

	return FALSE;
}

BOOL ForceL3Trig()
{
	int i, j, dx, dy;

	for(i = 0; L3UpList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L3UpList[i]) {
			sprintf(infostr, "Up to level %i", currlevel - 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABPREVLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	for(i = 0; L3DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L3DownList[i]
		|| dPiece[cursmx + 1][cursmy] == L3DownList[i]
		|| dPiece[cursmx + 2][cursmy] == L3DownList[i]) {
			sprintf(infostr, "Down to level %i", currlevel + 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABNEXTLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	if(currlevel == 9) {
		for(i = 0; L3TWarpUpList[i] != -1; i++) {
			if(dPiece[cursmx][cursmy] == L3TWarpUpList[i]) {
				for(j = 0; j < numtrigs; j++) {
					if(trigs[j]._tmsg == WM_DIABTWARPUP) {
						dx = abs(trigs[j]._tx - cursmx);
						dy = abs(trigs[j]._ty - cursmy);
						if(dx < 4 && dy < 4) {
							strcpy(infostr, "Up to town");
							cursmx = trigs[j]._tx;
							cursmy = trigs[j]._ty;
							return TRUE;
						}
					}
				}
			}
		}
	}

	return FALSE;
}

BOOL ForceL4Trig()
{
	int i, j, dx, dy;

	for(i = 0; L4UpList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L4UpList[i]) {
			sprintf(infostr, "Up to level %i", currlevel - 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABPREVLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	for(i = 0; L4DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L4DownList[i]) {
			sprintf(infostr, "Down to level %i", currlevel + 1);
			for(j = 0; j < numtrigs; j++) {
				if(trigs[j]._tmsg == WM_DIABNEXTLVL) {
					cursmx = trigs[j]._tx;
					cursmy = trigs[j]._ty;
					return TRUE;
				}
			}
		}
	}
	if(currlevel == 13) {
		for(i = 0; L4TWarpUpList[i] != -1; i++) {
			if(dPiece[cursmx][cursmy] == L4TWarpUpList[i]) {
				for(j = 0; j < numtrigs; j++) {
					if(trigs[j]._tmsg == WM_DIABTWARPUP) {
						dx = abs(trigs[j]._tx - cursmx);
						dy = abs(trigs[j]._ty - cursmy);
						if(dx < 4 && dy < 4) {
							strcpy(infostr, "Up to town");
							cursmx = trigs[j]._tx;
							cursmy = trigs[j]._ty;
							return TRUE;
						}
					}
				}
			}
		}
	}
	if(currlevel == 15) {
		for(i = 0; L4PentaList[i] != -1; i++) {
			if(dPiece[cursmx][cursmy] == L4PentaList[i]) {
				strcpy(infostr, "Down to Diablo");
				for(j = 0; j < numtrigs; j++) {
					if(trigs[j]._tmsg == WM_DIABNEXTLVL) {
						cursmx = trigs[j]._tx;
						cursmy = trigs[j]._ty;
						return TRUE;
					}
				}
			}
		}
	}

	return FALSE;
}

void Freeupstairs()
{
	int j, tx, ty, xx, yy;

	for(j = 0; j < numtrigs; j++) {
		tx = trigs[j]._tx;
		ty = trigs[j]._ty;
		for(yy = -2; yy < 3; yy++) {
			for(xx = -2; xx < 3; xx++) {
				dFlags[xx + tx][yy + ty] |= 8;
			}
		}
	}
}

BOOL ForceSKingTrig()
{
	int i;

	for(i = 0; L1UpList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L1UpList[i]) {
			sprintf(infostr, "Back to Level %i", quests[Q_SKELKING]._qlevel);
			cursmx = trigs[0]._tx;
			cursmy = trigs[0]._ty;
			return TRUE;
		}
	}

	return FALSE;
}

BOOL ForceSChambTrig()
{
	int i;

	for(i = 0; L2DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L2DownList[i]) {
			sprintf(infostr, "Back to Level %i", quests[Q_SCHAMB]._qlevel);
			cursmx = trigs[0]._tx;
			cursmy = trigs[0]._ty;
			return TRUE;
		}
	}

	return FALSE;
}

BOOL ForcePWaterTrig()
{
	int i;

	for(i = 0; L3DownList[i] != -1; i++) {
		if(dPiece[cursmx][cursmy] == L3DownList[i]) {
			sprintf(infostr, "Back to Level %i", quests[Q_PWATER]._qlevel);
			cursmx = trigs[0]._tx;
			cursmy = trigs[0]._ty;
			return TRUE;
		}
	}

	return FALSE;
}

void CheckTrigForce()
{
	trigflag = FALSE;

	if(MouseY > 352 - 1) {
		return;
	}

	if(!setlevel) {
		switch(leveltype) {
		case DTYPE_TOWN:
			trigflag = ForceTownTrig();
			break;
		case DTYPE_CATHEDRAL:
			trigflag = ForceL1Trig();
			break;
		case DTYPE_CATACOMBS:
			trigflag = ForceL2Trig();
			break;
		case DTYPE_CAVES:
			trigflag = ForceL3Trig();
			break;
		case DTYPE_HELL:
			trigflag = ForceL4Trig();
			break;
		}
		if(leveltype != DTYPE_TOWN && !trigflag) {
			trigflag = ForceQuests();
		}
	} else {
		switch(setlvlnum) {
		case SL_SKELKING:
			trigflag = ForceSKingTrig();
			break;
		case SL_BONECHAMB:
			trigflag = ForceSChambTrig();
			break;
		case SL_POISONWATER:
			trigflag = ForcePWaterTrig();
			break;
		}
	}

	if(trigflag) {
		ClearPanel();
	}
}

void CheckTriggers()
{
	int i, dx, dy;
	char m;
	BOOL abortflag;

	if(plr[myplr]._pmode != PM_STAND) {
		return;
	}

	for(i = 0; i < numtrigs; i++) {
		if(plr[myplr].WorldX != trigs[i]._tx || plr[myplr].WorldY != trigs[i]._ty) {
			continue;
		}
		switch(trigs[i]._tmsg) {
		case WM_DIABNEXTLVL:
			if(pcurs >= CURSOR_FIRSTITEM && DropItemBeforeTrig()) {
				return;
			}
			StartNewLvl(myplr, trigs[i]._tmsg, currlevel + 1);
			break;
		case WM_DIABPREVLVL:
			if(pcurs >= CURSOR_FIRSTITEM && DropItemBeforeTrig()) {
				return;
			}
			StartNewLvl(myplr, trigs[i]._tmsg, currlevel - 1);
			break;
		case WM_DIABTOWNWARP:
			if(gbMaxPlayers != 1) {
				abortflag = FALSE;
				if(trigs[i]._tlvl == 5 && plr[myplr]._pLevel < 8) {
					abortflag = TRUE;
					dx = plr[myplr].WorldX;
					dy = plr[myplr].WorldY + 1;
					m = 40;
				}
				if(trigs[i]._tlvl == 9 && plr[myplr]._pLevel < 13) {
					abortflag = TRUE;
					dx = plr[myplr].WorldX + 1;
					dy = plr[myplr].WorldY;
					m = 41;
				}
				if(trigs[i]._tlvl == 13 && plr[myplr]._pLevel < 17) {
					abortflag = TRUE;
					dx = plr[myplr].WorldX;
					dy = plr[myplr].WorldY + 1;
					m = 42;
				}
				if(abortflag) {
					if(plr[myplr]._pClass == PC_WARRIOR) {
						PlaySFX(PS_WARR43);
					} else if(plr[myplr]._pClass == PC_ROGUE) {
						PlaySFX(PS_ROGUE43);
					} else if(plr[myplr]._pClass == PC_SORCERER) {
						PlaySFX(PS_MAGE43);
					}
					InitDiabloMsg(m);
					NetSendCmdLoc(TRUE, CMD_WALKXY, dx, dy);
					return;
				}
			}
			StartNewLvl(myplr, trigs[i]._tmsg, trigs[i]._tlvl);
			break;
		case WM_DIABTWARPUP:
			TWarpFrom = currlevel;
			StartNewLvl(myplr, trigs[i]._tmsg, 0);
			break;
		case WM_DIABRTNLVL:
			/// ASSERT: assert(gbMaxPlayers == 1);
			StartNewLvl(myplr, trigs[i]._tmsg, ReturnLvl);
			break;
		default:
			app_fatal("Unknown trigger msg");
			break;
		}
	}
}