WebSVN – Games.Prince of Persia – Blame – /seg005.c

Rev	Author	Line No.	Line
1	pmbaty	1	/*
		2	SDLPoP, a port/conversion of the DOS game Prince of Persia.
		3	Copyright (C) 2013-2018 Dávid Nagy
		4
		5	This program is free software: you can redistribute it and/or modify
		6	it under the terms of the GNU General Public License as published by
		7	the Free Software Foundation, either version 3 of the License, or
		8	(at your option) any later version.
		9
		10	This program is distributed in the hope that it will be useful,
		11	but WITHOUT ANY WARRANTY; without even the implied warranty of
		12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		13	GNU General Public License for more details.
		14
		15	You should have received a copy of the GNU General Public License
		16	along with this program. If not, see <http://www.gnu.org/licenses/>.
		17
		18	The authors of this program may be contacted at http://forum.princed.org
		19	*/
		20
		21	#include "common.h"
		22
		23	// data:1888
		24	extern const word seqtbl_offsets[];
		25
		26	// seg005:000A
		27	void __pascal far seqtbl_offset_char(short seq_index) {
		28	Char.curr_seq = seqtbl_offsets[seq_index];
		29	}
		30
		31	// seg005:001D
		32	void __pascal far seqtbl_offset_opp(int seq_index) {
		33	Opp.curr_seq = seqtbl_offsets[seq_index];
		34	}
		35
		36	// seg005:0030
		37	void __pascal far do_fall() {
		38	if (is_screaming == 0 && Char.fall_y >= 31) {
		39	play_sound(sound_1_falling); // falling
		40	is_screaming = 1;
		41	}
		42	if ((word)y_land[Char.curr_row + 1] > (word)Char.y) {
		43	check_grab();
		44
		45	#ifdef FIX_GLIDE_THROUGH_WALL
		46	if (fix_glide_through_wall) {
		47	// Fix for the kid falling through walls after turning around while running (especially when weightless)
		48	determine_col();
		49	get_tile_at_char();
		50	if (curr_tile2 == tiles_20_wall \|\|
		51	((curr_tile2 == tiles_12_doortop \|\| curr_tile2 == tiles_7_doortop_with_floor) &&
		52	Char.direction == dir_FF_left)
		53	) {
		54	int delta_x = distance_to_edge_weight();
		55	//printf("delta_x = %d\n", delta_x);
		56	// When falling into a wall or doortop after turning or running, delta_x is likely to be either 8, 11 or 12
		57	// Calling in_wall() here produces the desired fix (no glitching through wall), but only when delta_x >= 10
		58	// The code below "emulates" in_wall() to always get the same effect as if delta_x == 10
		59	// (which distance actually looks/behaves best is a matter of preference)
		60	#define delta_x_reference 10
		61	if (delta_x >= 8) {
		62	delta_x = -5 + delta_x - delta_x_reference;
		63	Char.x = (byte) char_dx_forward(delta_x);
		64
		65	Char.fall_x = 0; // not in in_wall(), but we do need to cancel horizontal movement
		66	}
		67	}
		68	}
		69	#endif
		70
		71	} else {
		72
		73	#ifdef FIX_JUMP_THROUGH_WALL_ABOVE_GATE
		74	if (fix_jump_through_wall_above_gate) {
		75	// At this point, Char.curr_col has not yet been updated since check_bumped()
		76	// Basically, Char.curr_col is still set to the column of the wall itself (even though the kid
		77	// may have 'bumped' against the wall, with Char.x being offset)
		78
		79	// To prevent in_wall() from being called we need to update Char.curr_col here.
		80	// (in_wall() only makes things worse, because it tries to 'eject' the kid from the wall the wrong way.
		81	// For this reason, the kid can end up behind a closed gate below, like is possible in Level 7)
		82
		83	// The fix is calling determine_col() here.
		84
		85	// One caveat: the kid can also land on the rightmost edge of a closed gate tile, when doing a running jump
		86	// to the left from two floors up. This 'trick' can be used in original PoP, but is 'fixed' by this change.
		87	// To still allow this trick to be possible, we can check that we not jumping into a gate tile.
		88	// (By the way, strangely enough, in unmodified PoP the trick even works with a tapestry + floor tile...)
		89
		90	if (get_tile_at_char() != tiles_4_gate)
		91	determine_col();
		92	}
		93	#endif
		94
		95	if (get_tile_at_char() == tiles_20_wall) {
		96	in_wall();
		97	}
		98	#ifdef FIX_DROP_THROUGH_TAPESTRY
		99	else if (fix_drop_through_tapestry && get_tile_at_char() == tiles_12_doortop && Char.direction == dir_FF_left) {
		100	if (distance_to_edge_weight() >= 8) // only intervene if the kid is actually IN FRONT of the tapestry
		101	in_wall();
		102	}
		103	#endif
		104
		105	if (tile_is_floor(curr_tile2)) {
		106	land();
		107	} else {
		108	inc_curr_row();
		109	}
		110	}
		111	}
		112
		113	// seg005:0090
		114	void __pascal far land() {
		115	word seq_id;
		116	is_screaming = 0;
		117	Char.y = y_land[Char.curr_row + 1];
		118	if (get_tile_at_char() != tiles_2_spike) {
		119
		120
		121	if (! tile_is_floor(get_tile_infrontof_char()) &&
		122	distance_to_edge_weight() < 3
		123	) {
		124	Char.x = char_dx_forward(-3);
		125	}
		126
		127	#ifdef FIX_LAND_AGAINST_GATE_OR_TAPESTRY
		128	else if (fix_land_against_gate_or_tapestry) {
		129	// A closed gate right in front of the landing spot should not behave like an open floor tile, but like a wall
		130	// Similar for a tapestry tile (with floor)
		131	get_tile_infrontof_char();
		132	if (Char.direction == dir_FF_left && (
		133	(curr_tile2 == tiles_4_gate && can_bump_into_gate()) \|\|
		134	(curr_tile2 == tiles_7_doortop_with_floor))
		135	&& distance_to_edge_weight() < 3
		136	) {
		137	Char.x = char_dx_forward(-3);
		138	}
		139	}
		140	#endif
		141	start_chompers();
		142	} else {
		143	// fell on spikes
		144	goto loc_5EE6;
		145	}
		146	if (Char.alive < 0) {
		147	// alive
		148	if ((distance_to_edge_weight() >= 12 &&
		149	get_tile_behind_char() == tiles_2_spike) \|\|
		150	get_tile_at_char() == tiles_2_spike
		151	) {
		152	// fell on spikes
		153	loc_5EE6:
		154	if (is_spike_harmful()) {
		155	spiked();
		156	return;
		157	}
		158	#ifdef FIX_SAFE_LANDING_ON_SPIKES
		159	else if (fix_safe_landing_on_spikes && curr_room_modif[curr_tilepos] == 0) {
		160	// spikes ARE dangerous, just not out yet.
		161	spiked();
		162	return;
		163	}
		164	#endif // FIX_SAFE_LANDING_ON_SPIKES
		165	}
		166	{
		167	if (Char.fall_y < 22) {
		168	// fell 1 row
		169	loc_5EFD:
		170	if (Char.charid >= charid_2_guard \|\| Char.sword == sword_2_drawn) {
		171	Char.sword = sword_2_drawn;
		172	seq_id = seq_63_guard_stand_active; // stand active after landing
		173	} else {
		174	seq_id = seq_17_soft_land; // crouch (soft land)
		175	}
		176	if (Char.charid == charid_0_kid) {
		177	play_sound(sound_17_soft_land); // soft land (crouch)
		178	is_guard_notice = 1;
		179	}
		180	} else if (Char.fall_y < 33) {
		181	// fell 2 rows
		182	if (Char.charid == charid_1_shadow) goto loc_5EFD;
		183	if (Char.charid == charid_2_guard) goto loc_5F6C;
		184	// kid (or skeleton (bug!))
		185	if (! take_hp(1)) {
		186	// still alive
		187	play_sound(sound_16_medium_land); // medium land
		188	is_guard_notice = 1;
		189	seq_id = seq_20_medium_land; // medium land (lose 1 HP, crouch)
		190	} else {
		191	// dead (this was the last HP)
		192	goto loc_5F75;
		193	}
		194	} else {
		195	// fell 3 or more rows
		196	goto loc_5F6C;
		197	}
		198	}
		199	} else {
		200	// dead
		201	loc_5F6C:
		202	take_hp(100);
		203	loc_5F75:
		204	play_sound(sound_0_fell_to_death); // prince crashing into the floor
		205	seq_id = seq_22_crushed; // dead (after falling)
		206	}
		207	seqtbl_offset_char(seq_id);
		208	play_seq();
		209	Char.fall_y = 0;
		210	}
		211
		212	// seg005:01B7
		213	void __pascal far spiked() {
		214	// If someone falls into spikes, those spikes become harmless (to others).
		215	curr_room_modif[curr_tilepos] = 0xFF;
		216	Char.y = y_land[Char.curr_row + 1];
		217	Char.x = x_bump[tile_col + 5] + 10;
		218	Char.x = char_dx_forward(8);
		219	Char.fall_y = 0;
		220	play_sound(sound_48_spiked); // something spiked
		221	take_hp(100);
		222	seqtbl_offset_char(seq_51_spiked); // spiked
		223	play_seq();
		224	}
		225
		226	// seg005:0213
		227	void __pascal far control() {
		228	short char_frame;
		229	short char_action;
		230	char_frame = Char.frame;
		231	if (Char.alive >= 0) {
		232	if (char_frame == frame_15_stand \|\| // stand
		233	char_frame == frame_166_stand_inactive \|\| // stand
		234	char_frame == frame_158_stand_with_sword \|\| // stand with sword
		235	char_frame == frame_171_stand_with_sword // stand with sword
		236	) {
		237	seqtbl_offset_char(seq_71_dying); // dying (not stabbed)
		238	}
		239	} else {
		240	char_action = Char.action;
		241	if (char_action == actions_5_bumped \|\|
		242	char_action == actions_4_in_freefall
		243	) {
		244	release_arrows();
		245	} else if (Char.sword == sword_2_drawn) {
		246	control_with_sword();
		247	} else if (Char.charid >= charid_2_guard) {
		248	control_guard_inactive();
		249	} else if (char_frame == frame_15_stand \|\| // standing
		250	(char_frame>= frame_50_turn && char_frame<53) // end of turning
		251	) {
		252	control_standing();
		253	} else if (char_frame == frame_48_turn) { // a frame in turning
		254	control_turning();
		255	} else if (char_frame < 4) { // start run
		256	control_startrun();
		257	} else if (char_frame >= frame_67_start_jump_up_1 && char_frame < frame_70_jumphang) { // start jump up
		258	control_jumpup();
		259	} else if (char_frame < 15) { // running
		260	control_running();
		261	} else if (char_frame >= frame_87_hanging_1 && char_frame < 100) { // hanging
		262	control_hanging();
		263	} else if (char_frame == frame_109_crouch) { // crouching
		264	control_crouched();
		265	}
		266
		267	#ifdef ALLOW_CROUCH_AFTER_CLIMBING
		268	// When ducking with down+forward, give time to release the forward control (prevents unintended crouch-hops)
		269	else if (enable_crouch_after_climbing && Char.curr_seq >= seqtbl_offsets[seq_50_crouch] &&
		270	Char.curr_seq < seqtbl_offsets[seq_49_stand_up_from_crouch]) // while stooping
		271	if (control_forward < 1) control_forward = 0;
		272	#endif
		273
		274	#ifdef FIX_MOVE_AFTER_DRINK
		275	if (fix_move_after_drink && char_frame >= frame_191_drink && char_frame <= frame_205_drink)
		276	release_arrows();
		277	#endif
		278
		279	#ifdef FIX_MOVE_AFTER_SHEATHE
		280	if (fix_move_after_sheathe &&
		281	Char.curr_seq >= seqtbl_offsets[seq_92_put_sword_away] &&
		282	Char.curr_seq < seqtbl_offsets[seq_93_put_sword_away_fast]
		283	)
		284	release_arrows();
		285	#endif
		286	}
		287	}
		288
		289	// seg005:02EB
		290	void __pascal far control_crouched() {
		291	if (need_level1_music != 0 && current_level == 1) {
		292	// Special event: music when crouching
		293	if (! check_sound_playing()) {
		294	if (need_level1_music == 1) {
		295	play_sound(sound_25_presentation); // presentation (level 1 start)
		296	need_level1_music = 2;
		297	} else {
		298	#ifdef USE_REPLAY
		299	if (recording) special_move = MOVE_EFFECT_END;
		300	if (!replaying) // during replays, crouch immobilization gets cancelled in do_replay_move()
		301	#endif
		302	need_level1_music = 0;
		303	}
		304	}
		305	} else {
		306	need_level1_music = 0;
		307	if (control_shift2 < 0 && check_get_item()) return;
		308	if (control_y != 1) {
		309	seqtbl_offset_char(seq_49_stand_up_from_crouch); // stand up from crouch
		310	} else {
		311	if (control_forward < 0) {
		312	control_forward = 1; // disable automatic repeat
		313	seqtbl_offset_char(seq_79_crouch_hop); // crouch-hop
		314	}
		315	}
		316	}
		317	}
		318
		319	// seg005:0358
		320	void __pascal far control_standing() {
		321	short var_2;
		322	if (control_shift2 < 0 && control_shift < 0 && check_get_item()) {
		323	return;
		324	}
		325	if (Char.charid != charid_0_kid && control_down < 0 && control_forward < 0) {
		326	draw_sword();
		327	return;
		328	} //else
		329	if (have_sword) {
		330	if (offguard != 0 && control_shift >= 0) goto loc_6213;
		331	if (can_guard_see_kid >= 2) {
		332	var_2 = char_opp_dist();
		333	if (var_2 >= -10 && var_2 < 90) {
		334	holding_sword = 1;
		335	if ((word)var_2 < (word)-6) {
		336	if (Opp.charid == charid_1_shadow &&
		337	(Opp.action == actions_3_in_midair \|\| (Opp.frame >= frame_107_fall_land_1 && Opp.frame < 118))
		338	) {
		339	offguard = 0;
		340	} else {
		341	draw_sword();
		342	return;
		343	}
		344	} else {
		345	back_pressed();
		346	return;
		347	}
		348	}
		349	} else {
		350	offguard = 0;
		351	}
		352	}
		353	if (control_shift < 0) {
		354	if (control_backward < 0) {
		355	back_pressed();
		356	} else if (control_up < 0) {
		357	up_pressed();
		358	} else if (control_down < 0) {
		359	down_pressed();
		360	} else if (control_x < 0 && control_forward < 0) {
		361	safe_step();
		362	}
		363	} else loc_6213: if (control_forward < 0) {
		364	if (is_keyboard_mode && control_up < 0) {
		365	standing_jump();
		366	} else {
		367	forward_pressed();
		368	}
		369	} else if (control_backward < 0) {
		370	back_pressed();
		371	} else if (control_up < 0) {
		372	if (is_keyboard_mode && control_forward < 0) {
		373	standing_jump();
		374	} else {
		375	up_pressed();
		376	}
		377	} else if (control_down < 0) {
		378	down_pressed();
		379	} else if (control_x < 0) {
		380	forward_pressed();
		381	}
		382	}
		383
		384	// seg005:0482
		385	void __pascal far up_pressed() {
		386	int leveldoor_tilepos = -1;
		387	if (get_tile_at_char() == tiles_16_level_door_left) leveldoor_tilepos = curr_tilepos;
		388	else if (get_tile_behind_char() == tiles_16_level_door_left) leveldoor_tilepos = curr_tilepos;
		389	else if (get_tile_infrontof_char() == tiles_16_level_door_left) leveldoor_tilepos = curr_tilepos;
		390	if ((leveldoor_tilepos != -1) &&
		391	level.start_room != drawn_room &&
		392	curr_room_modif[leveldoor_tilepos] >= 42 // this door must be fully open
		393	){
		394	go_up_leveldoor();
		395	} else {
		396	if (control_x < 0) {
		397	standing_jump();
		398	} else {
		399	check_jump_up();
		400	}
		401	}
		402	}
		403
		404	// seg005:04C7
		405	void __pascal far down_pressed() {
		406	control_down = 1; // disable automatic repeat
		407	if (! tile_is_floor(get_tile_infrontof_char()) &&
		408	distance_to_edge_weight() < 3
		409	) {
		410	Char.x = char_dx_forward(5);
		411	load_fram_det_col();
		412	} else {
		413	if (! tile_is_floor(get_tile_behind_char()) &&
		414	distance_to_edge_weight() >= 8
		415	) {
		416	through_tile = get_tile_behind_char();
		417	get_tile_at_char();
		418	if (can_grab() &&
		419	#ifdef ALLOW_CROUCH_AFTER_CLIMBING
		420	(!(enable_crouch_after_climbing && control_forward == -1)) &&
		421	#endif
		422	(Char.direction >= dir_0_right \|\|
		423	get_tile_at_char() != tiles_4_gate \|\|
		424	curr_room_modif[curr_tilepos] >> 2 >= 6)
		425	) {
		426	Char.x = char_dx_forward(distance_to_edge_weight() - 9);
		427	seqtbl_offset_char(seq_68_climb_down); // climb down
		428	} else {
		429	crouch();
		430	}
		431	} else {
		432	crouch();
		433	}
		434	}
		435	}
		436
		437	// seg005:0574
		438	void __pascal far go_up_leveldoor() {
		439	Char.x = x_bump[tile_col + 5] + 10;
		440	Char.direction = dir_FF_left; // right
		441	seqtbl_offset_char(seq_70_go_up_on_level_door); // go up on level door
		442	}
		443
		444	// seg005:058F
		445	void __pascal far control_turning() {
		446	if (control_shift >= 0 && control_x < 0 && control_y >= 0) {
		447	seqtbl_offset_char(seq_43_start_run_after_turn); // start run and run (after turning)
		448	}
		449
		450	// Added:
		451	// When using a joystick, the kid may sometimes jump/duck/turn unintendedly after turning around.
		452	// To prevent this: clear the remembered controls, so that if the stick has already moved to another/neutral position,
		453	// the kid will not jump, duck, or turn again.
		454	if (is_joyst_mode) {
		455	if (control_up < 0 && control_y >= 0) {
		456	control_up = 0;
		457	}
		458	if (control_down < 0 && control_y <= 0) {
		459	control_down = 0;
		460	}
		461	if (control_backward < 0 && control_x == 0) {
		462	control_backward = 0;
		463	}
		464	}
		465	}
		466
		467	// seg005:05AD
		468	void __pascal far crouch() {
		469	seqtbl_offset_char(seq_50_crouch); // crouch
		470	control_down = release_arrows();
		471	}
		472
		473	// seg005:05BE
		474	void __pascal far back_pressed() {
		475	word seq_id;
		476	control_backward = release_arrows();
		477	// After turn, Kid will draw sword if ...
		478	if (have_sword == 0 \|\| // if Kid has sword
		479	can_guard_see_kid < 2 \|\| // and can see Guard
		480	char_opp_dist() > 0 \|\| // and Guard was behind him
		481	distance_to_edge_weight() < 2
		482	) {
		483	seq_id = seq_5_turn; // turn
		484	} else {
		485	Char.sword = sword_2_drawn;
		486	offguard = 0;
		487	seq_id = seq_89_turn_draw_sword; // turn and draw sword
		488	}
		489	seqtbl_offset_char(seq_id);
		490	}
		491
		492	// seg005:060F
		493	void __pascal far forward_pressed() {
		494	short distance;
		495	distance = get_edge_distance();
		496	#ifdef ALLOW_CROUCH_AFTER_CLIMBING
		497	if (enable_crouch_after_climbing && control_down < 0) {
		498	down_pressed();
		499	control_forward = 0;
		500	return;
		501	}
		502	#endif
		503
		504	if (edge_type == 1 && curr_tile2 != tiles_18_chomper && distance < 8) {
		505	// If char is near a wall, step instead of run.
		506	if (control_forward < 0) {
		507	safe_step();
		508	}
		509	} else {
		510	seqtbl_offset_char(seq_1_start_run); // start run and run
		511	}
		512	}
		513
		514	// seg005:0649
		515	void __pascal far control_running() {
		516	if (control_x == 0 && (Char.frame == frame_7_run \|\| Char.frame == frame_11_run)) {
		517	control_forward = release_arrows();
		518	seqtbl_offset_char(seq_13_stop_run); // stop run
		519	} else if (control_x > 0) {
		520	control_backward = release_arrows();
		521	seqtbl_offset_char(seq_6_run_turn); // run-turn
		522	} else if (control_y < 0 && control_up < 0) {
		523	run_jump();
		524	} else if (control_down < 0) {
		525	control_down = 1; // disable automatic repeat
		526	seqtbl_offset_char(seq_26_crouch_while_running); // crouch while running
		527	}
		528	}
		529
		530	// seg005:06A8
		531	void __pascal far safe_step() {
		532	short distance;
		533	control_shift2 = 1; // disable automatic repeat
		534	control_forward = 1; // disable automatic repeat
		535	distance = get_edge_distance();
		536	if (distance) {
		537	Char.repeat = 1;
		538	seqtbl_offset_char(distance + 28); // 29..42: safe step to edge
		539	} else if (edge_type != 1 && Char.repeat != 0) {
		540	Char.repeat = 0;
		541	seqtbl_offset_char(seq_44_step_on_edge); // step on edge
		542	} else {
		543	seqtbl_offset_char(seq_39_safe_step_11); // unsafe step (off ledge)
		544	}
		545	}
		546
		547	// seg005:06F0
		548	int __pascal far check_get_item() {
		549	if (get_tile_at_char() == tiles_10_potion \|\|
		550	curr_tile2 == tiles_22_sword
		551	) {
		552	if (! tile_is_floor(get_tile_behind_char())) {
		553	return 0;
		554	}
		555	Char.x = char_dx_forward(-14);
		556	load_fram_det_col();
		557	}
		558	if (get_tile_infrontof_char() == tiles_10_potion \|\|
		559	curr_tile2 == tiles_22_sword
		560	) {
		561	get_item();
		562	return 1;
		563	}
		564	return 0;
		565	}
		566
		567	// seg005:073E
		568	void __pascal far get_item() {
		569	short distance;
		570	if (Char.frame != frame_109_crouch) { // crouching
		571	distance = get_edge_distance();
		572	if (edge_type != 2) {
		573	Char.x = char_dx_forward(distance);
		574	}
		575	if (Char.direction >= dir_0_right) {
		576	Char.x = char_dx_forward((curr_tile2 == tiles_10_potion) - 2);
		577	}
		578	crouch();
		579	} else if (curr_tile2 == tiles_22_sword) {
		580	do_pickup(-1);
		581	seqtbl_offset_char(seq_91_get_sword); // get sword
		582	} else { // potion
		583	do_pickup(curr_room_modif[curr_tilepos] >> 3);
		584	seqtbl_offset_char(seq_78_drink); // drink
		585	#ifdef USE_COPYPROT
		586	if (current_level == 15) {
		587	short index;
		588	for (index = 0; index < 14; ++index) {
		589	// remove letter on potions level
		590	if (copyprot_room[index] == curr_room &&
		591	copyprot_tile[index] == curr_tilepos
		592	) {
		593	copyprot_room[index] = 0;
		594	break;
		595	}
		596	}
		597	}
		598	#endif
		599	}
		600	}
		601
		602	// seg005:07FF
		603	void __pascal far control_startrun() {
		604	if (control_y < 0 && control_x < 0) {
		605	standing_jump();
		606	}
		607	}
		608
		609	// seg005:0812
		610	void __pascal far control_jumpup() {
		611	if (control_x < 0 \|\| control_forward < 0) {
		612	standing_jump();
		613	}
		614	}
		615
		616	// seg005:0825
		617	void __pascal far standing_jump() {
		618	control_up = control_forward = 1; // disable automatic repeat
		619	seqtbl_offset_char(seq_3_standing_jump); // standing jump
		620	}
		621
		622	// seg005:0836
		623	void __pascal far check_jump_up() {
		624	control_up = release_arrows();
		625	through_tile = get_tile_above_char();
		626	get_tile_front_above_char();
		627	if (can_grab()) {
		628	grab_up_with_floor_behind();
		629	} else {
		630	through_tile = get_tile_behind_above_char();
		631	get_tile_above_char();
		632	if (can_grab()) {
		633	jump_up_or_grab();
		634	} else {
		635	jump_up();
		636	}
		637	}
		638	}
		639
		640	// seg005:087B
		641	void __pascal far jump_up_or_grab() {
		642	short distance;
		643	distance = distance_to_edge_weight();
		644	if (distance < 6) {
		645	jump_up();
		646	} else if (! tile_is_floor(get_tile_behind_char())) {
		647	// There is not floor behind char.
		648	grab_up_no_floor_behind();
		649	} else {
		650	// There is floor behind char, go back a bit.
		651	Char.x = char_dx_forward(distance - 14);
		652	load_fram_det_col();
		653	grab_up_with_floor_behind();
		654	}
		655	}
		656
		657	// seg005:08C7
		658	void __pascal far grab_up_no_floor_behind() {
		659	get_tile_above_char();
		660	Char.x = char_dx_forward(distance_to_edge_weight() - 10);
		661	seqtbl_offset_char(seq_16_jump_up_and_grab); // jump up and grab (no floor behind)
		662	}
		663
		664	// seg005:08E6
		665	void __pascal far jump_up() {
		666	short distance;
		667	control_up = release_arrows();
		668	distance = get_edge_distance();
		669	if (distance < 4 && edge_type == 1) {
		670	Char.x = char_dx_forward(distance - 3);
		671	}
		672	#ifdef FIX_JUMP_DISTANCE_AT_EDGE
		673	// When climbing up two floors, turning around and jumping upward, the kid falls down.
		674	// This fix makes the workaround of Trick 25 unnecessary.
		675	if (fix_jump_distance_at_edge && distance == 3 && edge_type == 0) {
		676	Char.x = char_dx_forward(-1);
		677	}
		678	#endif
		679	get_tile(Char.room, get_tile_div_mod(back_delta_x(0) + dx_weight() - 6), Char.curr_row - 1);
		680	if (curr_tile2 != tiles_20_wall && ! tile_is_floor(curr_tile2)) {
		681	seqtbl_offset_char(seq_28_jump_up_with_nothing_above); // jump up with nothing above
		682	} else {
		683	seqtbl_offset_char(seq_14_jump_up_into_ceiling); // jump up with wall or floor above
		684	}
		685	}
		686
		687	// seg005:0968
		688	void __pascal far control_hanging() {
		689	if (Char.alive < 0) {
		690	if (grab_timer == 0 && control_y < 0) {
		691	can_climb_up();
		692	} else if (control_shift < 0) {
		693	// hanging against a wall or a doortop
		694	if (Char.action != actions_6_hang_straight &&
		695	(get_tile_at_char() == tiles_20_wall \|\|
		696	(Char.direction == dir_FF_left && ( // facing left
		697	curr_tile2 == tiles_7_doortop_with_floor \|\|
		698	curr_tile2 == tiles_12_doortop
		699	)))
		700	) {
		701	if (grab_timer == 0) {
		702	play_sound(sound_8_bumped); // touching a wall (hang against wall)
		703	}
		704	seqtbl_offset_char(seq_25_hang_against_wall); // hang against wall (straight)
		705	} else {
		706	if (! tile_is_floor(get_tile_above_char())) {
		707	hang_fall();
		708	}
		709	}
		710	} else {
		711	hang_fall();
		712	}
		713	} else {
		714	hang_fall();
		715	}
		716	}
		717
		718	// seg005:09DF
		719	void __pascal far can_climb_up() {
		720	short seq_id;
		721	seq_id = seq_10_climb_up; // climb up
		722	control_up = control_shift2 = release_arrows();
		723	get_tile_above_char();
		724	if (((curr_tile2 == tiles_13_mirror \|\| curr_tile2 == tiles_18_chomper) &&
		725	Char.direction == dir_0_right) \|\|
		726	(curr_tile2 == tiles_4_gate && Char.direction != dir_0_right &&
		727	curr_room_modif[curr_tilepos] >> 2 < 6)
		728	) {
		729	seq_id = seq_73_climb_up_to_closed_gate; // climb up to closed gate and down
		730	}
		731	seqtbl_offset_char(seq_id);
		732	}
		733
		734	// seg005:0A46
		735	void __pascal far hang_fall() {
		736	control_down = release_arrows();
		737	if (! tile_is_floor(get_tile_behind_char()) &&
		738	! tile_is_floor(get_tile_at_char())
		739	) {
		740	seqtbl_offset_char(seq_23_release_ledge_and_fall); // release ledge and fall
		741	} else {
		742	if (get_tile_at_char() == tiles_20_wall \|\|
		743	(Char.direction < dir_0_right && ( // looking left
		744	curr_tile2 == tiles_7_doortop_with_floor \|\|
		745	curr_tile2 == tiles_12_doortop
		746	))
		747	) {
		748	Char.x = char_dx_forward(-7);
		749	}
		750	seqtbl_offset_char(seq_11_release_ledge_and_land); // end of climb down
		751	}
		752	}
		753
		754	// seg005:0AA8
		755	void __pascal far grab_up_with_floor_behind() {
		756	short distance;
		757	distance = distance_to_edge_weight();
		758
		759	// The global variable edge_type (which we need!) gets set as a side effect of get_edge_distance()
		760	short edge_distance = get_edge_distance();
		761	//printf("Distance to edge weight: %d\tedge type: %d\tedge distance: %d\n", distance, edge_type, edge_distance);
		762
		763	#ifdef FIX_EDGE_DISTANCE_CHECK_WHEN_CLIMBING
		764	// When climbing to a higher floor, the game unnecessarily checks how far away the edge below is;
		765	// This contributes to sometimes "teleporting" considerable distances when climbing from firm ground
		766	#define JUMP_STRAIGHT_CONDITION (fix_edge_distance_check_when_climbing) \
		767	? (distance < 4 && edge_type != 1) \
		768	: (distance < 4 && edge_distance < 4 && edge_type != 1)
		769	#else
		770	#define JUMP_STRAIGHT_CONDITION distance < 4 && edge_distance < 4 && edge_type != 1
		771	#endif
		772
		773	if (JUMP_STRAIGHT_CONDITION) {
		774	Char.x = char_dx_forward(distance);
		775	seqtbl_offset_char(seq_8_jump_up_and_grab_straight); // jump up and grab (when?)
		776	} else {
		777	Char.x = char_dx_forward(distance - 4);
		778	seqtbl_offset_char(seq_24_jump_up_and_grab_forward); // jump up and grab (with floor behind)
		779	}
		780	}
		781
		782	// seg005:0AF7
		783	void __pascal far run_jump() {
		784	short var_2;
		785	short xpos;
		786	short col;
		787	short var_8;
		788	if (Char.frame >= frame_7_run) {
		789	// Align Kid to edge of floor.
		790	xpos = char_dx_forward(4);
		791	col = get_tile_div_mod_m7(xpos);
		792	for (var_2 = 0; var_2 < 2; ++var_2) {
		793	col += dir_front[Char.direction + 1];
		794	get_tile(Char.room, col, Char.curr_row);
		795	if (curr_tile2 == tiles_2_spike \|\| ! tile_is_floor(curr_tile2)) {
		796	var_8 = distance_to_edge(xpos) + 14 * var_2 - 14;
		797	if ((word)var_8 < (word)-8 \|\| var_8 >= 2) {
		798	if (var_8 < 128) return;
		799	var_8 = -3;
		800	}
		801	Char.x = char_dx_forward(var_8 + 4);
		802	break;
		803	}
		804	}
		805	control_up = release_arrows(); // disable automatic repeat
		806	seqtbl_offset_char(seq_4_run_jump); // run-jump
		807	}
		808	}
		809
		810	// sseg005:0BB5
		811	void __pascal far back_with_sword() {
		812	short frame;
		813	frame = Char.frame;
		814	if (frame == frame_158_stand_with_sword \|\| frame == frame_170_stand_with_sword \|\| frame == frame_171_stand_with_sword) {
		815	control_backward = 1; // disable automatic repeat
		816	seqtbl_offset_char(seq_57_back_with_sword); // back with sword
		817	}
		818	}
		819
		820	// seg005:0BE3
		821	void __pascal far forward_with_sword() {
		822	short frame;
		823	frame = Char.frame;
		824	if (frame == frame_158_stand_with_sword \|\| frame == frame_170_stand_with_sword \|\| frame == frame_171_stand_with_sword) {
		825	control_forward = 1; // disable automatic repeat
		826	if (Char.charid != charid_0_kid) {
		827	seqtbl_offset_char(seq_56_guard_forward_with_sword); // forward with sword (Guard)
		828	} else {
		829	seqtbl_offset_char(seq_86_forward_with_sword); // forward with sword (Kid)
		830	}
		831	}
		832	}
		833
		834	// seg005:0C1D
		835	void __pascal far draw_sword() {
		836	word seq_id;
		837	seq_id = seq_55_draw_sword; // draw sword
		838	control_forward = control_shift2 = release_arrows();
		839	#ifdef FIX_UNINTENDED_SWORD_STRIKE
		840	if (fix_unintended_sword_strike) {
		841	ctrl1_shift2 = 1; // prevent restoring control_shift2 to -1 in rest_ctrl_1()
		842	}
		843	#endif
		844	if (Char.charid == charid_0_kid) {
		845	play_sound(sound_19_draw_sword); // taking out the sword
		846	offguard = 0;
		847	} else if (Char.charid != charid_1_shadow) {
		848	seq_id = seq_90_en_garde; // stand active
		849	}
		850	Char.sword = sword_2_drawn;
		851	seqtbl_offset_char(seq_id);
		852	}
		853
		854	// seg005:0C67
		855	void __pascal far control_with_sword() {
		856	short distance;
		857	if (Char.action < actions_2_hang_climb) {
		858	if (get_tile_at_char() == tiles_11_loose \|\| can_guard_see_kid >= 2) {
		859	distance = char_opp_dist();
		860	if ((word)distance < (word)90) {
		861	swordfight();
		862	return;
		863	} else if (distance < 0) {
		864	if ((word)distance < (word)-4) {
		865	seqtbl_offset_char(seq_60_turn_with_sword); // turn with sword (after switching places)
		866	return;
		867	} else {
		868	swordfight();
		869	return;
		870	}
		871	}
		872	} /else/ {
		873	if (Char.charid == charid_0_kid && Char.alive < 0) {
		874	holding_sword = 0;
		875	}
		876	if (Char.charid < charid_2_guard) {
		877	// frame 171: stand with sword
		878	if (Char.frame == frame_171_stand_with_sword) {
		879	Char.sword = sword_0_sheathed;
		880	seqtbl_offset_char(seq_92_put_sword_away); // put sword away (Guard died)
		881	}
		882	} else {
		883	swordfight();
		884	}
		885	}
		886	}
		887	}
		888
		889	// seg005:0CDB
		890	void __pascal far swordfight() {
		891	short frame;
		892	short seq_id;
		893	short charid;
		894	frame = Char.frame;
		895	charid = Char.charid;
		896	// frame 161: parry
		897	if (frame == frame_161_parry && control_shift2 >= 0) {
		898	seqtbl_offset_char(seq_57_back_with_sword); // back with sword (when parrying)
		899	return;
		900	} else if (control_shift2 < 0) {
		901	if (charid == charid_0_kid) {
		902	kid_sword_strike = 15;
		903	}
		904	sword_strike();
		905	if (control_shift2 == 1) return;
		906	}
		907	if (control_down < 0) {
		908	if (frame == frame_158_stand_with_sword \|\| frame == frame_170_stand_with_sword \|\| frame == frame_171_stand_with_sword) {
		909	control_down = 1; // disable automatic repeat
		910	Char.sword = sword_0_sheathed;
		911	if (charid == charid_0_kid) {
		912	offguard = 1;
		913	guard_refrac = 9;
		914	holding_sword = 0;
		915	seq_id = seq_93_put_sword_away_fast; // put sword away fast (down pressed)
		916	} else if (charid == charid_1_shadow) {
		917	seq_id = seq_92_put_sword_away; // put sword away
		918	} else {
		919	seq_id = seq_87_guard_become_inactive; // stand inactive (when Kid leaves sight)
		920	}
		921	seqtbl_offset_char(seq_id);
		922	}
		923	} else if (control_up < 0) {
		924	parry();
		925	} else if (control_forward < 0) {
		926	forward_with_sword();
		927	} else if (control_backward < 0) {
		928	back_with_sword();
		929	}
		930	}
		931
		932	// seg005:0DB0
		933	void __pascal far sword_strike() {
		934	short frame;
		935	short seq_id;
		936	frame = Char.frame;
		937	if (frame == frame_157_walk_with_sword \|\| // walk with sword
		938	frame == frame_158_stand_with_sword \|\| // stand with sword
		939	frame == frame_170_stand_with_sword \|\| // stand with sword
		940	frame == frame_171_stand_with_sword \|\| // stand with sword
		941	frame == frame_165_walk_with_sword // walk with sword
		942	) {
		943	if (Char.charid == charid_0_kid) {
		944	seq_id = seq_75_strike; // strike with sword (Kid)
		945	} else {
		946	seq_id = seq_58_guard_strike; // strike with sword (Guard)
		947	}
		948	} else if (frame == frame_150_parry \|\| frame == frame_161_parry) { // parry
		949	seq_id = seq_66_strike_after_parry; // strike with sword after parrying
		950	} else {
		951	return;
		952	}
		953	control_shift2 = 1; // disable automatic repeat
		954	seqtbl_offset_char(seq_id);
		955	}
		956
		957	// seg005:0E0F
		958	void __pascal far parry() {
		959	short opp_frame;
		960	short char_frame;
		961	short var_6;
		962	short seq_id;
		963	short char_charid;
		964	char_frame = Char.frame;
		965	opp_frame = Opp.frame;
		966	char_charid = Char.charid;
		967	seq_id = seq_62_parry; // defend (parry) with sword
		968	var_6 = 0;
		969	if (
		970	char_frame == frame_158_stand_with_sword \|\| // stand with sword
		971	char_frame == frame_170_stand_with_sword \|\| // stand with sword
		972	char_frame == frame_171_stand_with_sword \|\| // stand with sword
		973	char_frame == frame_168_back \|\| // back?
		974	char_frame == frame_165_walk_with_sword // walk with sword
		975	) {
		976	if (char_opp_dist() >= 32 && char_charid != charid_0_kid) {
		977	back_with_sword();
		978	return;
		979	} else if (char_charid == charid_0_kid) {
		980	if (opp_frame == frame_168_back) return;
		981	if (opp_frame != frame_151_strike_1 &&
		982	opp_frame != frame_152_strike_2 &&
		983	opp_frame != frame_162_block_to_strike
		984	) {
		985	if (opp_frame == frame_153_strike_3) { // strike
		986	var_6 = 1;
		987	} else
		988	if (char_charid != charid_0_kid) {
		989	back_with_sword();
		990	return;
		991	}
		992	}
		993	} else {
		994	if (opp_frame != frame_152_strike_2) return;
		995	}
		996	} else {
		997	if (char_frame != frame_167_blocked) return;
		998	seq_id = seq_61_parry_after_strike; // parry after striking with sword
		999	}
		1000	control_up = 1; // disable automatic repeat
		1001	seqtbl_offset_char(seq_id);
		1002	if (var_6) {
		1003	play_seq();
		1004	}
		1005	}

Subversion Repositories Games.Prince of Persia

Games.Prince of Persia/seg005.c – Rev 1