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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2000-2006 Tim Angus
This file is part of Tremulous.
Tremulous is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
Tremulous is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
//
/*****************************************************************************
* name: be_ai_move.h
*
* desc: movement AI
*
* $Archive: /source/code/botlib/be_ai_move.h $
*
*****************************************************************************/
//movement types
#define MOVE_WALK 1
#define MOVE_CROUCH 2
#define MOVE_JUMP 4
#define MOVE_GRAPPLE 8
#define MOVE_ROCKETJUMP 16
#define MOVE_BFGJUMP 32
//move flags
#define MFL_BARRIERJUMP 1 //bot is performing a barrier jump
#define MFL_ONGROUND 2 //bot is in the ground
#define MFL_SWIMMING 4 //bot is swimming
#define MFL_AGAINSTLADDER 8 //bot is against a ladder
#define MFL_WATERJUMP 16 //bot is waterjumping
#define MFL_TELEPORTED 32 //bot is being teleported
#define MFL_GRAPPLEPULL 64 //bot is being pulled by the grapple
#define MFL_ACTIVEGRAPPLE 128 //bot is using the grapple hook
#define MFL_GRAPPLERESET 256 //bot has reset the grapple
#define MFL_WALK 512 //bot should walk slowly
// move result flags
#define MOVERESULT_MOVEMENTVIEW 1 //bot uses view for movement
#define MOVERESULT_SWIMVIEW 2 //bot uses view for swimming
#define MOVERESULT_WAITING 4 //bot is waiting for something
#define MOVERESULT_MOVEMENTVIEWSET 8 //bot has set the view in movement code
#define MOVERESULT_MOVEMENTWEAPON 16 //bot uses weapon for movement
#define MOVERESULT_ONTOPOFOBSTACLE 32 //bot is ontop of obstacle
#define MOVERESULT_ONTOPOF_FUNCBOB 64 //bot is ontop of a func_bobbing
#define MOVERESULT_ONTOPOF_ELEVATOR 128 //bot is ontop of an elevator (func_plat)
#define MOVERESULT_BLOCKEDBYAVOIDSPOT 256 //bot is blocked by an avoid spot
//
#define MAX_AVOIDREACH 1
#define MAX_AVOIDSPOTS 32
// avoid spot types
#define AVOID_CLEAR 0 //clear all avoid spots
#define AVOID_ALWAYS 1 //avoid always
#define AVOID_DONTBLOCK 2 //never totally block
// restult types
#define RESULTTYPE_ELEVATORUP 1 //elevator is up
#define RESULTTYPE_WAITFORFUNCBOBBING 2 //waiting for func bobbing to arrive
#define RESULTTYPE_BADGRAPPLEPATH 4 //grapple path is obstructed
#define RESULTTYPE_INSOLIDAREA 8 //stuck in solid area, this is bad
//structure used to initialize the movement state
//the or_moveflags MFL_ONGROUND, MFL_TELEPORTED and MFL_WATERJUMP come from the playerstate
typedef struct bot_initmove_s
{
vec3_t origin; //origin of the bot
vec3_t velocity; //velocity of the bot
vec3_t viewoffset; //view offset
int entitynum; //entity number of the bot
int client; //client number of the bot
float thinktime; //time the bot thinks
int presencetype; //presencetype of the bot
vec3_t viewangles; //view angles of the bot
int or_moveflags; //values ored to the movement flags
} bot_initmove_t;
//NOTE: the ideal_viewangles are only valid if MFL_MOVEMENTVIEW is set
typedef struct bot_moveresult_s
{
int failure; //true if movement failed all together
int type; //failure or blocked type
int blocked; //true if blocked by an entity
int blockentity; //entity blocking the bot
int traveltype; //last executed travel type
int flags; //result flags
int weapon; //weapon used for movement
vec3_t movedir; //movement direction
vec3_t ideal_viewangles; //ideal viewangles for the movement
} bot_moveresult_t;
#define bot_moveresult_t_cleared(x) bot_moveresult_t (x) = {0, 0, 0, 0, 0, 0, 0, {0, 0, 0}, {0, 0, 0}}
// bk001204: from code/botlib/be_ai_move.c
// TTimo 04/12/2001 was moved here to avoid dup defines
typedef struct bot_avoidspot_s
{
vec3_t origin;
float radius;
int type;
} bot_avoidspot_t;
//resets the whole move state
void BotResetMoveState(int movestate);
//moves the bot to the given goal
void BotMoveToGoal(bot_moveresult_t *result, int movestate, bot_goal_t *goal, int travelflags);
//moves the bot in the specified direction using the specified type of movement
int BotMoveInDirection(int movestate, vec3_t dir, float speed, int type);
//reset avoid reachability
void BotResetAvoidReach(int movestate);
//resets the last avoid reachability
void BotResetLastAvoidReach(int movestate);
//returns a reachability area if the origin is in one
int BotReachabilityArea(vec3_t origin, int client);
//view target based on movement
int BotMovementViewTarget(int movestate, bot_goal_t *goal, int travelflags, float lookahead, vec3_t target);
//predict the position of a player based on movement towards a goal
int BotPredictVisiblePosition(vec3_t origin, int areanum, bot_goal_t *goal, int travelflags, vec3_t target);
//returns the handle of a newly allocated movestate
int BotAllocMoveState(void);
//frees the movestate with the given handle
void BotFreeMoveState(int handle);
//initialize movement state before performing any movement
void BotInitMoveState(int handle, bot_initmove_t *initmove);
//add a spot to avoid (if type == AVOID_CLEAR all spots are removed)
void BotAddAvoidSpot(int movestate, vec3_t origin, float radius, int type);
//must be called every map change
void BotSetBrushModelTypes(void);
//setup movement AI
int BotSetupMoveAI(void);
//shutdown movement AI
void BotShutdownMoveAI(void);
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