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Decompile chrCanSeeEntity

This commit is contained in:
Ryan Dwyer 2021-06-24 17:23:08 +10:00
parent f113b8cfca
commit 25183510e0
8 changed files with 108 additions and 211 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/files/setup/setuplue.c
View File

@ -1806,7 +1806,7 @@ u8 func040c_init_bottom_interceptors[] = {
};
u8 func040d_90c8[] = {
set_self_chrflag(CHRCFLAG_00000020)
set_self_chrflag(CHRCFLAG_LOSEXTRAHEIGHT)
set_accuracy(30)
set_ailist(CHR_SELF, GAILIST_UNALERTED)
endlist

4
src/files/setup/setuppete.c
View File

@ -2428,8 +2428,8 @@ u8 func1400_give_briefcases[] = {
yield
set_chr_team(CHR_ANTI, TEAM_20)
set_chr_chrflag(CHR_TOPSTAIRS, CHRCFLAG_HAS_SPECIAL_DEATH_ANIMATION)
set_chr_chrflag(CHR_TOPSTAIRS, CHRCFLAG_00000020)
set_chr_chrflag(0x0a, CHRCFLAG_00000020)
set_chr_chrflag(CHR_TOPSTAIRS, CHRCFLAG_LOSEXTRAHEIGHT)
set_chr_chrflag(0x0a, CHRCFLAG_LOSEXTRAHEIGHT)
if_difficulty_lt(DIFF_PA, /*goto*/ 0x03)
// PA

12
src/files/setup/setuprit.c
View File

@ -1732,11 +1732,11 @@ u8 func100c_cockpit_stripes[] = {
endlist
};
u8 func0413_taker1[] = {
u8 func040f_taker1[] = {
set_chr_team(CHR_SELF, TEAM_04)
rebuild_teams
rebuild_squadrons
set_self_chrflag(CHRCFLAG_00000020)
set_self_chrflag(CHRCFLAG_LOSEXTRAHEIGHT)
set_chr_dodge_rating(2, 0x00)
set_reaction_speed(50)
set_chr_maxdamage(CHR_SELF, 60)
@ -1748,11 +1748,11 @@ u8 func0413_taker1[] = {
endlist
};
u8 func0413_taker2[] = {
u8 func0410_taker2[] = {
set_chr_team(CHR_SELF, TEAM_04)
rebuild_teams
rebuild_squadrons
set_self_chrflag(CHRCFLAG_00000020)
set_self_chrflag(CHRCFLAG_LOSEXTRAHEIGHT)
set_chr_dodge_rating(2, 0x00)
set_reaction_speed(50)
set_chr_maxdamage(CHR_SELF, 60)
@ -4172,8 +4172,8 @@ struct ailist ailists[] = {
{ func040e_unused, 0x040e },
{ func0413_taker, 0x0413 },
{ func100c_cockpit_stripes, 0x0414 },
{ func0413_taker1, 0x040f },
{ func0413_taker2, 0x0410 },
{ func040f_taker1, 0x040f },
{ func0410_taker2, 0x0410 },
{ func0413_taker, 0x0413 },
{ func0411_typing_guy, 0x0411 },
{ func0412_sitting_guy, 0x0412 },

2
src/files/setup/setupsho.c
View File

@ -1946,7 +1946,7 @@ u8 func040c_king_waiting[] = {
set_chr_chrflag(CHR_SELF, CHRCFLAG_RUNFASTER)
set_chr_hiddenflag(CHR_SELF, CHRHFLAG_00100000)
if_difficulty_gt(DIFF_A, /*goto*/ 0x2d)
set_self_chrflag(CHRCFLAG_00000020)
set_self_chrflag(CHRCFLAG_LOSEXTRAHEIGHT)
label(0x2d)
set_self_chrflag(CHRCFLAG_INVINCIBLE)
set_chr_hiddenflag(CHR_SELF, CHRHFLAG_INFINITESHIELD)

2
src/files/setup/setupstat.c
View File

@ -327,7 +327,7 @@ u8 func0403_init_maian_leader[] = {
};
u8 func0402_init_king[] = {
set_self_chrflag(CHRCFLAG_00000020)
set_self_chrflag(CHRCFLAG_LOSEXTRAHEIGHT)
set_alertness(100)
set_accuracy(100)
set_reaction_speed(100)

291
src/game/chr/chraction.c
View File

@ -7013,200 +7013,97 @@ void chrRecordLastVisibleTargetTime(struct chrdata *chr)
chr->lastvisibletarget60 = g_Vars.lvframe60;
}
GLOBAL_ASM(
glabel chrCanSeeEntity
/* f038f40: 27bdff88 */ addiu $sp,$sp,-120
/* f038f44: 8fae0088 */ lw $t6,0x88($sp)
/* f038f48: afbf001c */ sw $ra,0x1c($sp)
/* f038f4c: afa40078 */ sw $a0,0x78($sp)
/* f038f50: 31cf0002 */ andi $t7,$t6,0x2
/* f038f54: afa5007c */ sw $a1,0x7c($sp)
/* f038f58: afa60080 */ sw $a2,0x80($sp)
/* f038f5c: afa70084 */ sw $a3,0x84($sp)
/* f038f60: 11e00004 */ beqz $t7,.L0f038f74
/* f038f64: afa00074 */ sw $zero,0x74($sp)
/* f038f68: 24180001 */ addiu $t8,$zero,0x1
/* f038f6c: 1000009a */ b .L0f0391d8
/* f038f70: afb80074 */ sw $t8,0x74($sp)
.L0f038f74:
/* f038f74: 2419083f */ addiu $t9,$zero,0x83f
/* f038f78: afb9004c */ sw $t9,0x4c($sp)
/* f038f7c: 8fa40078 */ lw $a0,0x78($sp)
/* f038f80: 0fc0a209 */ jal chrGetEquippedWeaponProp
/* f038f84: 00002825 */ or $a1,$zero,$zero
/* f038f88: 14400003 */ bnez $v0,.L0f038f98
/* f038f8c: 8fa40078 */ lw $a0,0x78($sp)
/* f038f90: 0fc0a209 */ jal chrGetEquippedWeaponProp
/* f038f94: 24050001 */ addiu $a1,$zero,0x1
.L0f038f98:
/* f038f98: 1040000e */ beqz $v0,.L0f038fd4
/* f038f9c: 27a70068 */ addiu $a3,$sp,0x68
/* f038fa0: 8c430004 */ lw $v1,0x4($v0)
/* f038fa4: 24010018 */ addiu $at,$zero,0x18
/* f038fa8: 24080a3f */ addiu $t0,$zero,0xa3f
/* f038fac: 9064005c */ lbu $a0,0x5c($v1)
/* f038fb0: 10810005 */ beq $a0,$at,.L0f038fc8
/* f038fb4: 24010019 */ addiu $at,$zero,0x19
/* f038fb8: 10810003 */ beq $a0,$at,.L0f038fc8
/* f038fbc: 24010034 */ addiu $at,$zero,0x34
/* f038fc0: 14810003 */ bne $a0,$at,.L0f038fd0
/* f038fc4: 240908bf */ addiu $t1,$zero,0x8bf
.L0f038fc8:
/* f038fc8: 10000002 */ b .L0f038fd4
/* f038fcc: afa8004c */ sw $t0,0x4c($sp)
.L0f038fd0:
/* f038fd0: afa9004c */ sw $t1,0x4c($sp)
.L0f038fd4:
/* f038fd4: 27aa0058 */ addiu $t2,$sp,0x58
/* f038fd8: afaa0010 */ sw $t2,0x10($sp)
/* f038fdc: 8fa40078 */ lw $a0,0x78($sp)
/* f038fe0: 8fa50088 */ lw $a1,0x88($sp)
/* f038fe4: 0fc122de */ jal chrGetAttackEntityPos
/* f038fe8: 8fa6008c */ lw $a2,0x8c($sp)
/* f038fec: 8fa40078 */ lw $a0,0x78($sp)
/* f038ff0: 0fc079ef */ jal chrSetOrUnsetHiddenFlag00000100
/* f038ff4: 00002825 */ or $a1,$zero,$zero
/* f038ff8: 8fa20088 */ lw $v0,0x88($sp)
/* f038ffc: 304b0200 */ andi $t3,$v0,0x200
/* f039000: 11600046 */ beqz $t3,.L0f03911c
/* f039004: 304e0004 */ andi $t6,$v0,0x4
/* f039008: 0fc0a221 */ jal chrGetTargetProp
/* f03900c: 8fa40078 */ lw $a0,0x78($sp)
/* f039010: 904c0000 */ lbu $t4,0x0($v0)
/* f039014: 24010006 */ addiu $at,$zero,0x6
/* f039018: 00402025 */ or $a0,$v0,$zero
/* f03901c: 15810003 */ bne $t4,$at,.L0f03902c
/* f039020: 3c0d800a */ lui $t5,%hi(g_Vars+0x324)
/* f039024: 8dada2e4 */ lw $t5,%lo(g_Vars+0x324)($t5)
/* f039028: 11a00068 */ beqz $t5,.L0f0391cc
.L0f03902c:
/* f03902c: 00002825 */ or $a1,$zero,$zero
/* f039030: 0fc1905e */ jal propSetCollisionsEnabled
/* f039034: afa40054 */ sw $a0,0x54($sp)
/* f039038: 8fae0084 */ lw $t6,0x84($sp)
/* f03903c: 8faf0078 */ lw $t7,0x78($sp)
/* f039040: 8fa4007c */ lw $a0,0x7c($sp)
/* f039044: 11c00023 */ beqz $t6,.L0f0390d4
/* f039048: 8fa50080 */ lw $a1,0x80($sp)
/* f03904c: 8df80018 */ lw $t8,0x18($t7)
/* f039050: 33190020 */ andi $t9,$t8,0x20
/* f039054: 53200020 */ beqzl $t9,.L0f0390d8
/* f039058: 8fab004c */ lw $t3,0x4c($sp)
/* f03905c: 8fa4007c */ lw $a0,0x7c($sp)
/* f039060: 3c01428c */ lui $at,0x428c
/* f039064: 44814000 */ mtc1 $at,$f8
/* f039068: c4840000 */ lwc1 $f4,0x0($a0)
/* f03906c: 8fa50080 */ lw $a1,0x80($sp)
/* f039070: 27a60038 */ addiu $a2,$sp,0x38
/* f039074: e7a40038 */ swc1 $f4,0x38($sp)
/* f039078: c4860004 */ lwc1 $f6,0x4($a0)
/* f03907c: 27a70028 */ addiu $a3,$sp,0x28
/* f039080: 46083280 */ add.s $f10,$f6,$f8
/* f039084: e7aa003c */ swc1 $f10,0x3c($sp)
/* f039088: c4900008 */ lwc1 $f16,0x8($a0)
/* f03908c: 0fc19776 */ jal func0f065dd8
/* f039090: e7b00040 */ swc1 $f16,0x40($sp)
/* f039094: 8fa8004c */ lw $t0,0x4c($sp)
/* f039098: 24090010 */ addiu $t1,$zero,0x10
/* f03909c: afa90014 */ sw $t1,0x14($sp)
/* f0390a0: 27a40038 */ addiu $a0,$sp,0x38
/* f0390a4: 27a50028 */ addiu $a1,$sp,0x28
/* f0390a8: 27a60068 */ addiu $a2,$sp,0x68
/* f0390ac: 27a70058 */ addiu $a3,$sp,0x58
/* f0390b0: 0c00b70f */ jal hasLineOfSight
/* f0390b4: afa80010 */ sw $t0,0x10($sp)
/* f0390b8: 50400014 */ beqzl $v0,.L0f03910c
/* f0390bc: 8fa40054 */ lw $a0,0x54($sp)
/* f0390c0: 0fc0e3cc */ jal chrRecordLastVisibleTargetTime
/* f0390c4: 8fa40078 */ lw $a0,0x78($sp)
/* f0390c8: 240a0001 */ addiu $t2,$zero,0x1
/* f0390cc: 1000000e */ b .L0f039108
/* f0390d0: afaa0074 */ sw $t2,0x74($sp)
.L0f0390d4:
/* f0390d4: 8fab004c */ lw $t3,0x4c($sp)
.L0f0390d8:
/* f0390d8: 240c0010 */ addiu $t4,$zero,0x10
/* f0390dc: afac0014 */ sw $t4,0x14($sp)
/* f0390e0: 27a60068 */ addiu $a2,$sp,0x68
/* f0390e4: 27a70058 */ addiu $a3,$sp,0x58
/* f0390e8: 0c00b70f */ jal hasLineOfSight
/* f0390ec: afab0010 */ sw $t3,0x10($sp)
/* f0390f0: 50400006 */ beqzl $v0,.L0f03910c
/* f0390f4: 8fa40054 */ lw $a0,0x54($sp)
/* f0390f8: 0fc0e3cc */ jal chrRecordLastVisibleTargetTime
/* f0390fc: 8fa40078 */ lw $a0,0x78($sp)
/* f039100: 240d0001 */ addiu $t5,$zero,0x1
/* f039104: afad0074 */ sw $t5,0x74($sp)
.L0f039108:
/* f039108: 8fa40054 */ lw $a0,0x54($sp)
.L0f03910c:
/* f03910c: 0fc1905e */ jal propSetCollisionsEnabled
/* f039110: 24050001 */ addiu $a1,$zero,0x1
/* f039114: 1000002e */ b .L0f0391d0
/* f039118: 8fa40078 */ lw $a0,0x78($sp)
.L0f03911c:
/* f03911c: 11c0001e */ beqz $t6,.L0f039198
/* f039120: 30490008 */ andi $t1,$v0,0x8
/* f039124: 8fa40078 */ lw $a0,0x78($sp)
/* f039128: 0fc126d1 */ jal chrFindById
/* f03912c: 8fa5008c */ lw $a1,0x8c($sp)
/* f039130: 10400004 */ beqz $v0,.L0f039144
/* f039134: 00402025 */ or $a0,$v0,$zero
/* f039138: 8c4f001c */ lw $t7,0x1c($v0)
/* f03913c: 55e00003 */ bnezl $t7,.L0f03914c
/* f039140: 00002825 */ or $a1,$zero,$zero
.L0f039144:
/* f039144: 8fa40078 */ lw $a0,0x78($sp)
/* f039148: 00002825 */ or $a1,$zero,$zero
.L0f03914c:
/* f03914c: 0fc079ef */ jal chrSetOrUnsetHiddenFlag00000100
/* f039150: afa40050 */ sw $a0,0x50($sp)
/* f039154: 8fb8004c */ lw $t8,0x4c($sp)
/* f039158: 24190010 */ addiu $t9,$zero,0x10
/* f03915c: afb90014 */ sw $t9,0x14($sp)
/* f039160: 8fa4007c */ lw $a0,0x7c($sp)
/* f039164: 8fa50080 */ lw $a1,0x80($sp)
/* f039168: 27a60068 */ addiu $a2,$sp,0x68
/* f03916c: 27a70058 */ addiu $a3,$sp,0x58
/* f039170: 0c00b70f */ jal hasLineOfSight
/* f039174: afb80010 */ sw $t8,0x10($sp)
/* f039178: 10400003 */ beqz $v0,.L0f039188
/* f03917c: 24050001 */ addiu $a1,$zero,0x1
/* f039180: 24080001 */ addiu $t0,$zero,0x1
/* f039184: afa80074 */ sw $t0,0x74($sp)
.L0f039188:
/* f039188: 0fc079ef */ jal chrSetOrUnsetHiddenFlag00000100
/* f03918c: 8fa40050 */ lw $a0,0x50($sp)
/* f039190: 1000000f */ b .L0f0391d0
/* f039194: 8fa40078 */ lw $a0,0x78($sp)
.L0f039198:
/* f039198: 1120000c */ beqz $t1,.L0f0391cc
/* f03919c: 8fa4007c */ lw $a0,0x7c($sp)
/* f0391a0: 8faa004c */ lw $t2,0x4c($sp)
/* f0391a4: 240b0010 */ addiu $t3,$zero,0x10
/* f0391a8: afab0014 */ sw $t3,0x14($sp)
/* f0391ac: 8fa50080 */ lw $a1,0x80($sp)
/* f0391b0: 27a60068 */ addiu $a2,$sp,0x68
/* f0391b4: 27a70058 */ addiu $a3,$sp,0x58
/* f0391b8: 0c00b70f */ jal hasLineOfSight
/* f0391bc: afaa0010 */ sw $t2,0x10($sp)
/* f0391c0: 10400002 */ beqz $v0,.L0f0391cc
/* f0391c4: 240c0001 */ addiu $t4,$zero,0x1
/* f0391c8: afac0074 */ sw $t4,0x74($sp)
.L0f0391cc:
/* f0391cc: 8fa40078 */ lw $a0,0x78($sp)
.L0f0391d0:
/* f0391d0: 0fc079ef */ jal chrSetOrUnsetHiddenFlag00000100
/* f0391d4: 24050001 */ addiu $a1,$zero,0x1
.L0f0391d8:
/* f0391d8: 8fbf001c */ lw $ra,0x1c($sp)
/* f0391dc: 8fa20074 */ lw $v0,0x74($sp)
/* f0391e0: 27bd0078 */ addiu $sp,$sp,0x78
/* f0391e4: 03e00008 */ jr $ra
/* f0391e8: 00000000 */ nop
);
bool chrCanSeeEntity(struct chrdata *chr, struct coord *chrpos, s16 *chrrooms, bool allowextraheight, u32 attackflags, u32 entityid)
{
bool result = false;
struct coord targetpos;
s16 targetrooms[8];
struct prop *targetprop;
struct chrdata *targetchr;
u32 types;
struct prop *weaponprop;
bool chrCanSeeAttackTarget(struct chrdata *chr, struct coord *pos, s16 *rooms, bool arg3)
if (attackflags & ATTACKFLAG_AIMFORWARD) {
result = true;
} else {
types = CDTYPE_DOORSWITHOUTFLAG | CDTYPE_ALL;
weaponprop = chrGetEquippedWeaponProp(chr, HAND_RIGHT);
if (weaponprop == NULL) {
weaponprop = chrGetEquippedWeaponProp(chr, HAND_LEFT);
}
if (weaponprop) {
struct weaponobj *weapon = weaponprop->weapon;
if (weapon->weaponnum == WEAPON_ROCKETLAUNCHER
|| weapon->weaponnum == WEAPON_SLAYER
|| weapon->weaponnum == WEAPON_ROCKETLAUNCHER_34) {
types = CDTYPE_DOORSWITHOUTFLAG | CDTYPE_OBJSWITHFLAG2 | CDTYPE_ALL;
} else {
types = CDTYPE_DOORSWITHOUTFLAG | CDTYPE_OBJSWITHFLAG | CDTYPE_ALL;
}
}
chrGetAttackEntityPos(chr, attackflags, entityid, &targetpos, targetrooms);
chrSetOrUnsetHiddenFlag00000100(chr, false);
if ((attackflags & ATTACKFLAG_AIMATTARGET)) {
targetprop = chrGetTargetProp(chr);
if (targetprop->type != PROPTYPE_PLAYER || g_Vars.bondvisible) {
propSetCollisionsEnabled(targetprop, false);
if (allowextraheight && (chr->chrflags & CHRCFLAG_LOSEXTRAHEIGHT)) {
struct coord frompos;
s16 fromrooms[8];
frompos.x = chrpos->x;
frompos.y = chrpos->y + 70;
frompos.z = chrpos->z;
func0f065dd8(chrpos, chrrooms, &frompos, fromrooms);
if (hasLineOfSight(&frompos, fromrooms, &targetpos, targetrooms, types, 0x10)) {
chrRecordLastVisibleTargetTime(chr);
result = true;
}
} else {
if (hasLineOfSight(chrpos, chrrooms, &targetpos, targetrooms, types, 0x10)) {
chrRecordLastVisibleTargetTime(chr);
result = true;
}
}
propSetCollisionsEnabled(targetprop, true);
}
} else if (attackflags & ATTACKFLAG_AIMATCHR) {
targetchr = chrFindById(chr, entityid);
if (!targetchr || !targetchr->prop) {
targetchr = chr;
}
chrSetOrUnsetHiddenFlag00000100(targetchr, false);
if (hasLineOfSight(chrpos, chrrooms, &targetpos, targetrooms, types, 0x10)) {
result = true;
}
chrSetOrUnsetHiddenFlag00000100(targetchr, true);
} else if (attackflags & ATTACKFLAG_AIMATPAD) {
if (hasLineOfSight(chrpos, chrrooms, &targetpos, targetrooms, types, 0x10)) {
result = true;
}
}
chrSetOrUnsetHiddenFlag00000100(chr, true);
}
return result;
}
bool chrCanSeeAttackTarget(struct chrdata *chr, struct coord *pos, s16 *rooms, bool allowextraheight)
{
u32 attackflags = ATTACKFLAG_AIMATTARGET;
u32 entityid = 0;
@ -7216,7 +7113,7 @@ bool chrCanSeeAttackTarget(struct chrdata *chr, struct coord *pos, s16 *rooms, b
entityid = chr->act_attack.entityid;
}
return chrCanSeeEntity(chr, pos, rooms, arg3, attackflags, entityid);
return chrCanSeeEntity(chr, pos, rooms, allowextraheight, attackflags, entityid);
}
bool chrCanSeeChr(struct chrdata *chr, struct chrdata *target, s16 *room)
@ -7607,7 +7504,7 @@ bool chrTryAttackWalk(struct chrdata *chr)
if (chrIsReadyForOrders(chr)) {
struct prop *prop = chr->prop;
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, 0)
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, false)
&& (chrGetEquippedWeaponPropWithCheck(chr, 0) || chrGetEquippedWeaponPropWithCheck(chr, 1))
&& g_Vars.lvframe60 - chr->lastwalk60 > PALDOWN(120)) {
struct prop *target = chrGetTargetProp(chr);
@ -7636,7 +7533,7 @@ bool chrTryAttackRun(struct chrdata *chr)
if (chrIsReadyForOrders(chr)) {
struct prop *prop = chr->prop;
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, 0)
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, false)
&& (chrGetEquippedWeaponPropWithCheck(chr, 0) || chrGetEquippedWeaponPropWithCheck(chr, 1))
&& g_Vars.lvframe60 - chr->lastwalk60 > PALDOWN(180)) {
struct prop *target = chrGetTargetProp(chr);
@ -7659,7 +7556,7 @@ bool chrTryAttackRoll(struct chrdata *chr)
if (CHRRACE(chr) == RACE_HUMAN && chrIsReadyForOrders(chr)) {
struct prop *prop = chr->prop;
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, 0) &&
if (chrCanSeeAttackTarget(chr, &prop->pos, prop->rooms, false) &&
(chrGetEquippedWeaponPropWithCheck(chr, 0) || chrGetEquippedWeaponPropWithCheck(chr, 1))) {
struct prop *target = chrGetTargetProp(chr);
f32 x = target->pos.x - prop->pos.x;

2
src/include/constants.h
View File

@ -470,7 +470,7 @@
#define CHRCFLAG_NEAR_MISS 0x00000004
#define CHRCFLAG_NEVER_BEEN_ON_SCREEN 0x00000008
#define CHRCFLAG_INVINCIBLE 0x00000010
#define CHRCFLAG_00000020 0x00000020 // Chicago, Infiltration, AF1, Ruins, WAR
#define CHRCFLAG_LOSEXTRAHEIGHT 0x00000020 // Chicago, Infiltration, AF1, Ruins, WAR
#define CHRCFLAG_00000040 0x00000040 // Used quite a lot
#define CHRCFLAG_00000080 0x00000080 // Defection programmer, Rescue lab techs, globals when doing idle animation
#define CHRCFLAG_JUST_INJURED 0x00000100

4
src/include/game/chr/chraction.h
View File

@ -94,8 +94,8 @@ void chrGoPosChooseAnimation(struct chrdata *chr);
bool chrGoToPos(struct chrdata *chr, struct coord *pos, s16 *rooms, u32 flags);
void chrPatrolChooseAnimation(struct chrdata *chr);
void chrStartPatrol(struct chrdata *chr, struct path *path);
bool chrCanSeeEntity(struct chrdata *chr, struct coord *pos, s16 *rooms, bool arg3, u32 attackflags, u32 entityid);
bool chrCanSeeAttackTarget(struct chrdata *chr, struct coord *pos, s16 *rooms, bool arg3);
bool chrCanSeeEntity(struct chrdata *chr, struct coord *chrpos, s16 *chrrooms, bool allowextraheight, u32 attackflags, u32 entityid);
bool chrCanSeeAttackTarget(struct chrdata *chr, struct coord *pos, s16 *rooms, bool allowextraheight);
bool chrCanSeeChr(struct chrdata *chr, struct chrdata *target, s16 *room);
bool chrHasLineOfSightToPos(struct chrdata *viewerchr, struct coord *pos, s16 *rooms);
bool chrCanSeePos(struct chrdata *chr, struct coord *pos, s16 *room);