198 lines
6.1 KiB
C
198 lines
6.1 KiB
C
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Triggers and Switches.
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*
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*/
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#pragma once
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#include <physfs.h>
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#include "maths.h"
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#ifdef __cplusplus
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#include "pack.h"
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#include "fwdobject.h"
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#include "fwdsegment.h"
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#include "compiler-array.h"
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#define MAX_TRIGGERS 100
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#define MAX_WALLS_PER_LINK 10
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#define TT_OPEN_DOOR 0 // Open a door
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#define TT_MATCEN 2 // Activate a matcen
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#define TT_EXIT 3 // End the level
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#define TT_SECRET_EXIT 4 // Go to secret level
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#define TT_ILLUSION_OFF 5 // Turn an illusion off
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#define TT_ILLUSION_ON 6 // Turn an illusion on
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#if defined(DXX_BUILD_DESCENT_II)
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// Trigger types
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#define TT_CLOSE_DOOR 1 // Close a door
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#define TT_UNLOCK_DOOR 7 // Unlock a door
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#define TT_LOCK_DOOR 8 // Lock a door
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#define TT_OPEN_WALL 9 // Makes a wall open
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#define TT_CLOSE_WALL 10 // Makes a wall closed
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#define TT_ILLUSORY_WALL 11 // Makes a wall illusory
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#define TT_LIGHT_OFF 12 // Turn a light off
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#define TT_LIGHT_ON 13 // Turn a light on
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#define NUM_TRIGGER_TYPES 14
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// Trigger flags
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//could also use flags for one-shots
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#define TF_NO_MESSAGE 1 // Don't show a message when triggered
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#define TF_ONE_SHOT 2 // Only trigger once
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#define TF_DISABLED 4 // Set after one-shot fires
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//old trigger structs
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struct v29_trigger
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{
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sbyte type;
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short flags;
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fix value;
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fix time;
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sbyte link_num;
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short num_links;
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array<segnum_t, MAX_WALLS_PER_LINK> seg;
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array<short, MAX_WALLS_PER_LINK> side;
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} __pack__;
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struct v30_trigger
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{
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short flags;
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sbyte num_links;
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sbyte pad; //keep alignment
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fix value;
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fix time;
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array<segnum_t, MAX_WALLS_PER_LINK> seg;
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array<short, MAX_WALLS_PER_LINK> side;
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} __pack__;
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#endif
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//flags for V30 & below triggers
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#define TRIGGER_CONTROL_DOORS 1 // Control Trigger
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#define TRIGGER_SHIELD_DAMAGE 2 // Shield Damage Trigger
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#define TRIGGER_ENERGY_DRAIN 4 // Energy Drain Trigger
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#define TRIGGER_EXIT 8 // End of level Trigger
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#define TRIGGER_ON 16 // Whether Trigger is active
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#define TRIGGER_ONE_SHOT 32 // If Trigger can only be triggered once
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#define TRIGGER_MATCEN 64 // Trigger for materialization centers
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#define TRIGGER_ILLUSION_OFF 128 // Switch Illusion OFF trigger
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#define TRIGGER_SECRET_EXIT 256 // Exit to secret level
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#define TRIGGER_ILLUSION_ON 512 // Switch Illusion ON trigger
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#if defined(DXX_BUILD_DESCENT_II)
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#define TRIGGER_UNLOCK_DOORS 1024 // Unlocks a door
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#define TRIGGER_OPEN_WALL 2048 // Makes a wall open
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#define TRIGGER_CLOSE_WALL 4096 // Makes a wall closed
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#define TRIGGER_ILLUSORY_WALL 8192 // Makes a wall illusory
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#endif
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//the trigger really should have both a type & a flags, since most of the
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//flags bits are exclusive of the others.
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#if defined(DXX_BUILD_DESCENT_I) || defined(DXX_BUILD_DESCENT_II)
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struct trigger : public prohibit_void_ptr<trigger>
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{
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#if defined(DXX_BUILD_DESCENT_I)
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short flags;
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#elif defined(DXX_BUILD_DESCENT_II)
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ubyte type; //what this trigger does
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ubyte flags; //currently unused
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uint8_t num_links; //how many doors, etc. linked to this
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#endif
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fix value;
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fix time;
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#if defined(DXX_BUILD_DESCENT_I)
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int8_t link_num;
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uint16_t num_links;
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#endif
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array<segnum_t, MAX_WALLS_PER_LINK> seg;
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array<short, MAX_WALLS_PER_LINK> side;
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};
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const uint8_t trigger_none = -1;
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extern unsigned Num_triggers;
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extern array<trigger, MAX_TRIGGERS> Triggers;
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extern void trigger_init();
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void check_trigger(vcsegptridx_t seg, short side, vcobjptridx_t objnum, int shot);
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extern int check_trigger_sub(int trigger_num, int player_num,int shot);
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extern void triggers_frame_process();
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static inline int trigger_is_exit(const trigger *t)
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{
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#if defined(DXX_BUILD_DESCENT_I)
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return t->flags & TRIGGER_EXIT;
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#elif defined(DXX_BUILD_DESCENT_II)
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return t->type == TT_EXIT;
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#endif
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}
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static inline int trigger_is_matcen(const trigger &t)
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{
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#if defined(DXX_BUILD_DESCENT_I)
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return t.flags & TRIGGER_MATCEN;
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#elif defined(DXX_BUILD_DESCENT_II)
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return t.type == TT_MATCEN;
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#endif
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}
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#if defined(DXX_BUILD_DESCENT_I)
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void v25_trigger_read(PHYSFS_file *fp, trigger *);
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void v26_trigger_read(PHYSFS_file *fp, trigger &);
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#endif
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#if defined(DXX_BUILD_DESCENT_II)
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/*
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* reads a v29_trigger structure from a PHYSFS_file
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*/
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extern void v29_trigger_read(v29_trigger *t, PHYSFS_file *fp);
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/*
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* reads a v30_trigger structure from a PHYSFS_file
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*/
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extern void v30_trigger_read(v30_trigger *t, PHYSFS_file *fp);
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#endif
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/*
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* reads a trigger structure from a PHYSFS_file
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*/
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extern void trigger_read(trigger *t, PHYSFS_file *fp);
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void v29_trigger_read_as_v31(PHYSFS_File *fp, trigger &t);
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void v30_trigger_read_as_v31(PHYSFS_File *fp, trigger &t);
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/*
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* reads n trigger structs from a PHYSFS_file and swaps if specified
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*/
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void trigger_read(PHYSFS_file *fp, trigger &t);
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void trigger_write(PHYSFS_file *fp, const trigger &t);
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void v29_trigger_write(PHYSFS_file *fp, const trigger &t);
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void v30_trigger_write(PHYSFS_file *fp, const trigger &t);
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void v31_trigger_write(PHYSFS_file *fp, const trigger &t);
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#endif
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#endif
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