/**
* @brief Checks if we can move in the given vertical direction
* @return false if we can't move there
*/
bool Step::checkVerticalDirections () const
{
if (dir == DIRECTION_FALL) {
if (flier) {
/* Fliers cannot fall intentionally. */
return false;
} else if (routing.getFloor(actorSize, fromPos) >= 0) {
/* We cannot fall if there is a floor in this cell. */
return false;
} else if (hasLadderSupport) {
/* The actor can't fall if there is ladder support. */
return false;
}
} else if (dir == DIRECTION_CLIMB_UP) {
if (flier && QuantToModel(routing.getCeiling(actorSize, fromPos)) < UNIT_HEIGHT * 2 - PLAYER_HEIGHT) { /* Not enough headroom to fly up. */
return false;
}
/* If the actor is not a flyer and tries to move up, there must be a ladder. */
if (dir == DIRECTION_CLIMB_UP && !hasLadderToClimb) {
return false;
}
} else if (dir == DIRECTION_CLIMB_DOWN) {
if (flier) {
if (routing.getFloor(actorSize, fromPos) >= 0 ) { /* Can't fly down through a floor. */
return false;
}
} else {
/* If the actor is not a flyer and tries to move down, there must be a ladder. */
if (!hasLadderToClimb) {
return false;
}
}
}
return true;
}
/**
* @brief Checks if we can move in the given vertical direction
* @param[in] step The struct describing the move
* @param[in] pos Current location in the map.
* @param[in] dir Direction vector index (see DIRECTIONS and dvecs)
* @return false if we can't move there
*/
static qboolean Grid_StepCheckVerticalDirections (step_t *step, const pos3_t pos, const int dir)
{
if (dir == DIRECTION_FALL) {
if (step->flier) {
/* Fliers cannot fall intentionally. */
return qfalse;
} else if (RT_FLOOR_POS(step->map, step->actorSize, pos) >= 0) {
/* We cannot fall if there is a floor in this cell. */
return qfalse;
} else if (step->hasLadderSupport) {
/* The actor can't fall if there is ladder support. */
return qfalse;
}
} else if (dir == DIRECTION_CLIMB_UP) {
if (step->flier && QuantToModel(RT_CEILING_POS(step->map, step->actorSize, pos)) < UNIT_HEIGHT * 2 - PLAYER_HEIGHT) { /* Not enough headroom to fly up. */
return qfalse;
}
/* If the actor is not a flyer and tries to move up, there must be a ladder. */
if (dir == DIRECTION_CLIMB_UP && !step->hasLadderToClimb) {
return qfalse;
}
} else if (dir == DIRECTION_CLIMB_DOWN) {
if (step->flier) {
if (RT_FLOOR_POS(step->map, step->actorSize, pos) >= 0 ) { /* Can't fly down through a floor. */
return qfalse;
}
} else {
/* If the actor is not a flyer and tries to move down, there must be a ladder. */
if (!step->hasLadderToClimb) {
return qfalse;
}
}
}
return qtrue;
}
/**
* @brief Returns the maximum height of an obstruction that an actor can travel over.
* @param[in] map Pointer to client or server side routing table (clMap, svMap)
* @param[in] actorSize width of the actor in cells
* @param[in] pos Position in the map to check the height
* @param[in] dir the direction in which we are moving
* @return The actual model height increase needed to move into an adjacent cell.
*/
pos_t Grid_StepUp (const routing_t *map, const actorSizeEnum_t actorSize, const pos3_t pos, const int dir)
{
/* max 8 levels */
if (pos[2] >= PATHFINDING_HEIGHT) {
Com_Printf("Grid_StepUp: Warning: z level is bigger than 7: %i\n", pos[2]);
}
return QuantToModel(RT_STEPUP(map, actorSize, pos[0], pos[1], pos[2] & (PATHFINDING_HEIGHT - 1), dir));
}
/**
* @brief Returns the height of the floor in a cell.
* @param[in] map Pointer to client or server side routing table (clMap, svMap)
* @param[in] actorSize width of the actor in cells
* @param[in] pos Position in the map to check the height
* @return The actual model height of the cell's floor.
*/
int Grid_Floor (const routing_t *map, const actorSizeEnum_t actorSize, const pos3_t pos)
{
/* max 8 levels */
if (pos[2] >= PATHFINDING_HEIGHT) {
Com_Printf("Grid_Floor: Warning: z level is bigger than %i: %i\n",
(PATHFINDING_HEIGHT - 1), pos[2]);
}
return QuantToModel(RT_FLOOR(map, actorSize, pos[0], pos[1], pos[2] & (PATHFINDING_HEIGHT - 1)));
}
/**
* @brief Returns the height of the floor in a cell.
* @param[in] map Pointer to client or server side routing table (clMap, svMap)
* @param[in] actorSize width of the actor in cells
* @param[in] pos Position in the map to check the height
* @return The actual model height of the cell's ceiling.
*/
unsigned int Grid_Ceiling (const routing_t *map, const actorSizeEnum_t actorSize, const pos3_t pos)
{
/* max 8 levels */
if (pos[2] >= PATHFINDING_HEIGHT) {
Com_Printf("Grid_Height: Warning: z level is bigger than %i: %i\n",
(PATHFINDING_HEIGHT - 1), pos[2]);
}
return QuantToModel(RT_CEILING(map, actorSize, pos[0], pos[1], pos[2] & 7));
}
/**
* @brief evaluate access state for given position for given routing data
* @param routes routing data
* @param pos position to evaluate
* @return access state as enum value for later rendering
*/
static EAccessState evaluateAccessState (const routing_t routes[ACTOR_MAX_SIZE], const pos3_t pos, const int actorSize)
{
const int height = QuantToModel(RT_CEILING(routes, actorSize, pos[0], pos[1], pos[2] & (PATHFINDING_HEIGHT - 1))
- RT_FLOOR(routes, actorSize, pos[0], pos[1], pos[2] & (PATHFINDING_HEIGHT - 1)));
if (height >= PLAYER_STANDING_HEIGHT)
return ACC_STAND;
else if (height >= PLAYER_CROUCHING_HEIGHT)
return ACC_CROUCH;
else
return ACC_DISABLED;
}
/**
* @brief Returns the height of the floor in a cell.
* @param[in] routing Reference to client or server side routing table (clMap, svMap)
* @param[in] actorSize width of the actor in cells
* @param[in] pos Position in the map to check the height
* @return The actual model height of the cell's floor.
*/
int Grid_Floor (const Routing &routing, const actorSizeEnum_t actorSize, const pos3_t pos)
{
assert(pos[2] < PATHFINDING_HEIGHT);
return QuantToModel(routing.getFloor(actorSize, pos[0], pos[1], pos[2] & (PATHFINDING_HEIGHT - 1)));
}
/**
* @brief Returns the height of the floor in a cell.
* @param[in] routing Reference to client or server side routing table (clMap, svMap)
* @param[in] actorSize width of the actor in cells
* @param[in] pos Position in the map to check the height
* @return The actual model height of the cell's ceiling.
*/
unsigned int Grid_Ceiling (const Routing &routing, const actorSizeEnum_t actorSize, const pos3_t pos)
{
assert(pos[2] < PATHFINDING_HEIGHT);
return QuantToModel(routing.getCeiling(actorSize, pos[0], pos[1], pos[2] & 7));
}
