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8 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
16 * Triggers and Switches.
26 #define MAX_TRIGGERS 100
27 #define MAX_WALLS_PER_LINK 10
31 #define TT_OPEN_DOOR 0 // Open a door
32 #define TT_CLOSE_DOOR 1 // Close a door
33 #define TT_MATCEN 2 // Activate a matcen
34 #define TT_EXIT 3 // End the level
35 #define TT_SECRET_EXIT 4 // Go to secret level
36 #define TT_ILLUSION_OFF 5 // Turn an illusion off
37 #define TT_ILLUSION_ON 6 // Turn an illusion on
38 #define TT_UNLOCK_DOOR 7 // Unlock a door
39 #define TT_LOCK_DOOR 8 // Lock a door
40 #define TT_OPEN_WALL 9 // Makes a wall open
41 #define TT_CLOSE_WALL 10 // Makes a wall closed
42 #define TT_ILLUSORY_WALL 11 // Makes a wall illusory
43 #define TT_LIGHT_OFF 12 // Turn a light off
44 #define TT_LIGHT_ON 13 // Turn s light on
45 #define NUM_TRIGGER_TYPES 14
49 //could also use flags for one-shots
51 #define TF_NO_MESSAGE 1 // Don't show a message when triggered
52 #define TF_ONE_SHOT 2 // Only trigger once
53 #define TF_DISABLED 4 // Set after one-shot fires
57 typedef struct v29_trigger {
64 short seg[MAX_WALLS_PER_LINK];
65 short side[MAX_WALLS_PER_LINK];
66 } __pack__ v29_trigger;
68 typedef struct v30_trigger {
71 sbyte pad; //keep alignment
74 short seg[MAX_WALLS_PER_LINK];
75 short side[MAX_WALLS_PER_LINK];
76 } __pack__ v30_trigger;
78 //flags for V30 & below triggers
79 #define TRIGGER_CONTROL_DOORS 1 // Control Trigger
80 #define TRIGGER_SHIELD_DAMAGE 2 // Shield Damage Trigger
81 #define TRIGGER_ENERGY_DRAIN 4 // Energy Drain Trigger
82 #define TRIGGER_EXIT 8 // End of level Trigger
83 #define TRIGGER_ON 16 // Whether Trigger is active
84 #define TRIGGER_ONE_SHOT 32 // If Trigger can only be triggered once
85 #define TRIGGER_MATCEN 64 // Trigger for materialization centers
86 #define TRIGGER_ILLUSION_OFF 128 // Switch Illusion OFF trigger
87 #define TRIGGER_SECRET_EXIT 256 // Exit to secret level
88 #define TRIGGER_ILLUSION_ON 512 // Switch Illusion ON trigger
89 #define TRIGGER_UNLOCK_DOORS 1024 // Unlocks a door
90 #define TRIGGER_OPEN_WALL 2048 // Makes a wall open
91 #define TRIGGER_CLOSE_WALL 4096 // Makes a wall closed
92 #define TRIGGER_ILLUSORY_WALL 8192 // Makes a wall illusory
94 //the trigger really should have both a type & a flags, since most of the
95 //flags bits are exclusive of the others.
96 typedef struct trigger {
97 ubyte type; //what this trigger does
98 ubyte flags; //currently unused
99 sbyte num_links; //how many doors, etc. linked to this
100 sbyte pad; //keep alignment
103 short seg[MAX_WALLS_PER_LINK];
104 short side[MAX_WALLS_PER_LINK];
107 extern trigger Triggers[MAX_TRIGGERS];
109 extern int Num_triggers;
111 extern void trigger_init(void);
112 extern void check_trigger(segment *seg, short side, short objnum,int shot);
113 extern int check_trigger_sub(int trigger_num, int player_num,int shot);
114 extern void triggers_frame_process(void);
117 #define v29_trigger_read(t, fp) cfread(t, sizeof(v29_trigger), 1, fp)
118 #define v30_trigger_read(t, fp) cfread(t, sizeof(v30_trigger), 1, fp)
119 #define trigger_read(t, fp) cfread(t, sizeof(trigger), 1, fp)
122 * reads a v29_trigger structure from a CFILE
124 extern void v29_trigger_read(v29_trigger *t, CFILE *fp);
127 * reads a v30_trigger structure from a CFILE
129 extern void v30_trigger_read(v30_trigger *t, CFILE *fp);
132 * reads a trigger structure from a CFILE
134 extern void trigger_read(trigger *t, CFILE *fp);
137 extern void trigger_write(trigger *t, short version, PHYSFS_file *fp);