minetest/src/player.cpp
Kahrl 88cdd3a363 Players stay in environment even when dead, damage flash and fall damage fixes
Don't set m_removed on dead players (dead players are indicated by hp == 0). Local
damage flash is shown whatever the cause was (even from Lua set_hp). PlayerCAO
damage flash matches duration of local damage flash. Fall damage is dealt much more consistently (this is done by disallowing jumping when speed.Y is very negative, up to now jumping could sometimes negate fall damage)
2012-02-05 12:06:55 +02:00

764 lines
18 KiB
C++

/*
Minetest-c55
Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program 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.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "player.h"
#include "map.h"
#include "connection.h"
#include "constants.h"
#include "utility.h"
#ifndef SERVER
#include <ITextSceneNode.h>
#endif
#include "main.h" // For g_settings
#include "settings.h"
#include "nodedef.h"
#include "collision.h"
#include "environment.h"
#include "gamedef.h"
Player::Player(IGameDef *gamedef):
touching_ground(false),
in_water(false),
in_water_stable(false),
is_climbing(false),
swimming_up(false),
inventory(gamedef->idef()),
inventory_backup(NULL),
hp(20),
peer_id(PEER_ID_INEXISTENT),
// protected
m_gamedef(gamedef),
m_pitch(0),
m_yaw(0),
m_speed(0,0,0),
m_position(0,0,0)
{
updateName("<not set>");
resetInventory();
}
Player::~Player()
{
delete inventory_backup;
}
void Player::resetInventory()
{
inventory.clear();
inventory.addList("main", PLAYER_INVENTORY_SIZE);
inventory.addList("craft", 9);
inventory.addList("craftpreview", 1);
inventory.addList("craftresult", 1);
}
// Y direction is ignored
void Player::accelerate(v3f target_speed, f32 max_increase)
{
v3f d_wanted = target_speed - m_speed;
d_wanted.Y = 0;
f32 dl_wanted = d_wanted.getLength();
f32 dl = dl_wanted;
if(dl > max_increase)
dl = max_increase;
v3f d = d_wanted.normalize() * dl;
m_speed.X += d.X;
m_speed.Z += d.Z;
//m_speed += d;
#if 0 // old code
if(m_speed.X < target_speed.X - max_increase)
m_speed.X += max_increase;
else if(m_speed.X > target_speed.X + max_increase)
m_speed.X -= max_increase;
else if(m_speed.X < target_speed.X)
m_speed.X = target_speed.X;
else if(m_speed.X > target_speed.X)
m_speed.X = target_speed.X;
if(m_speed.Z < target_speed.Z - max_increase)
m_speed.Z += max_increase;
else if(m_speed.Z > target_speed.Z + max_increase)
m_speed.Z -= max_increase;
else if(m_speed.Z < target_speed.Z)
m_speed.Z = target_speed.Z;
else if(m_speed.Z > target_speed.Z)
m_speed.Z = target_speed.Z;
#endif
}
v3s16 Player::getLightPosition() const
{
return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
}
void Player::serialize(std::ostream &os)
{
// Utilize a Settings object for storing values
Settings args;
args.setS32("version", 1);
args.set("name", m_name);
//args.set("password", m_password);
args.setFloat("pitch", m_pitch);
args.setFloat("yaw", m_yaw);
args.setV3F("position", m_position);
args.setS32("hp", hp);
args.writeLines(os);
os<<"PlayerArgsEnd\n";
// If actual inventory is backed up due to creative mode, save it
// instead of the dummy creative mode inventory
if(inventory_backup)
inventory_backup->serialize(os);
else
inventory.serialize(os);
}
void Player::deSerialize(std::istream &is)
{
Settings args;
for(;;)
{
if(is.eof())
throw SerializationError
("Player::deSerialize(): PlayerArgsEnd not found");
std::string line;
std::getline(is, line);
std::string trimmedline = trim(line);
if(trimmedline == "PlayerArgsEnd")
break;
args.parseConfigLine(line);
}
//args.getS32("version"); // Version field value not used
std::string name = args.get("name");
updateName(name.c_str());
setPitch(args.getFloat("pitch"));
setYaw(args.getFloat("yaw"));
setPosition(args.getV3F("position"));
try{
hp = args.getS32("hp");
}catch(SettingNotFoundException &e){
hp = 20;
}
inventory.deSerialize(is);
if(inventory.getList("craftpreview") == NULL)
{
// Convert players without craftpreview
inventory.addList("craftpreview", 1);
bool craftresult_is_preview = true;
if(args.exists("craftresult_is_preview"))
craftresult_is_preview = args.getBool("craftresult_is_preview");
if(craftresult_is_preview)
{
// Clear craftresult
inventory.getList("craftresult")->changeItem(0, ItemStack());
}
}
}
#ifndef SERVER
/*
LocalPlayer
*/
LocalPlayer::LocalPlayer(IGameDef *gamedef):
Player(gamedef),
m_sneak_node(32767,32767,32767),
m_sneak_node_exists(false)
{
// Initialize hp to 0, so that no hearts will be shown if server
// doesn't support health points
hp = 0;
}
LocalPlayer::~LocalPlayer()
{
}
void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d,
core::list<CollisionInfo> *collision_info)
{
INodeDefManager *nodemgr = m_gamedef->ndef();
v3f position = getPosition();
v3f oldpos = position;
v3s16 oldpos_i = floatToInt(oldpos, BS);
v3f old_speed = m_speed;
/*std::cout<<"oldpos_i=("<<oldpos_i.X<<","<<oldpos_i.Y<<","
<<oldpos_i.Z<<")"<<std::endl;*/
/*
Calculate new position
*/
position += m_speed * dtime;
// Skip collision detection if a special movement mode is used
bool free_move = g_settings->getBool("free_move");
if(free_move)
{
setPosition(position);
return;
}
/*
Collision detection
*/
// Player position in nodes
v3s16 pos_i = floatToInt(position, BS);
/*
Check if player is in water (the oscillating value)
*/
try{
// If in water, the threshold of coming out is at higher y
if(in_water)
{
v3s16 pp = floatToInt(position + v3f(0,BS*0.1,0), BS);
in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
}
// If not in water, the threshold of going in is at lower y
else
{
v3s16 pp = floatToInt(position + v3f(0,BS*0.5,0), BS);
in_water = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
}
}
catch(InvalidPositionException &e)
{
in_water = false;
}
/*
Check if player is in water (the stable value)
*/
try{
v3s16 pp = floatToInt(position + v3f(0,0,0), BS);
in_water_stable = nodemgr->get(map.getNode(pp).getContent()).isLiquid();
}
catch(InvalidPositionException &e)
{
in_water_stable = false;
}
/*
Check if player is climbing
*/
try {
v3s16 pp = floatToInt(position + v3f(0,0.5*BS,0), BS);
v3s16 pp2 = floatToInt(position + v3f(0,-0.2*BS,0), BS);
is_climbing = ((nodemgr->get(map.getNode(pp).getContent()).climbable ||
nodemgr->get(map.getNode(pp2).getContent()).climbable) && !free_move);
}
catch(InvalidPositionException &e)
{
is_climbing = false;
}
/*
Collision uncertainty radius
Make it a bit larger than the maximum distance of movement
*/
//f32 d = pos_max_d * 1.1;
// A fairly large value in here makes moving smoother
f32 d = 0.15*BS;
// This should always apply, otherwise there are glitches
assert(d > pos_max_d);
float player_radius = BS*0.35;
float player_height = BS*1.7;
// Maximum distance over border for sneaking
f32 sneak_max = BS*0.4;
/*
If sneaking, player has larger collision radius to keep from
falling
*/
/*if(control.sneak)
player_radius = sneak_max + d*1.1;*/
/*
If sneaking, keep in range from the last walked node and don't
fall off from it
*/
if(control.sneak && m_sneak_node_exists)
{
f32 maxd = 0.5*BS + sneak_max;
v3f lwn_f = intToFloat(m_sneak_node, BS);
position.X = rangelim(position.X, lwn_f.X-maxd, lwn_f.X+maxd);
position.Z = rangelim(position.Z, lwn_f.Z-maxd, lwn_f.Z+maxd);
f32 min_y = lwn_f.Y + 0.5*BS;
if(position.Y < min_y)
{
position.Y = min_y;
//v3f old_speed = m_speed;
if(m_speed.Y < 0)
m_speed.Y = 0;
/*if(collision_info)
{
// Report fall collision
if(old_speed.Y < m_speed.Y - 0.1)
{
CollisionInfo info;
info.t = COLLISION_FALL;
info.speed = m_speed.Y - old_speed.Y;
collision_info->push_back(info);
}
}*/
}
}
/*
Calculate player collision box (new and old)
*/
core::aabbox3d<f32> playerbox(
position.X - player_radius,
position.Y - 0.0,
position.Z - player_radius,
position.X + player_radius,
position.Y + player_height,
position.Z + player_radius
);
core::aabbox3d<f32> playerbox_old(
oldpos.X - player_radius,
oldpos.Y - 0.0,
oldpos.Z - player_radius,
oldpos.X + player_radius,
oldpos.Y + player_height,
oldpos.Z + player_radius
);
/*
If the player's feet touch the topside of any node, this is
set to true.
Player is allowed to jump when this is true.
*/
touching_ground = false;
/*std::cout<<"Checking collisions for ("
<<oldpos_i.X<<","<<oldpos_i.Y<<","<<oldpos_i.Z
<<") -> ("
<<pos_i.X<<","<<pos_i.Y<<","<<pos_i.Z
<<"):"<<std::endl;*/
bool standing_on_unloaded = false;
/*
Go through every node around the player
*/
for(s16 y = oldpos_i.Y - 1; y <= oldpos_i.Y + 2; y++)
for(s16 z = oldpos_i.Z - 1; z <= oldpos_i.Z + 1; z++)
for(s16 x = oldpos_i.X - 1; x <= oldpos_i.X + 1; x++)
{
bool is_unloaded = false;
try{
// Player collides into walkable nodes
if(nodemgr->get(map.getNode(v3s16(x,y,z))).walkable == false)
continue;
}
catch(InvalidPositionException &e)
{
is_unloaded = true;
// Doing nothing here will block the player from
// walking over map borders
}
core::aabbox3d<f32> nodebox = getNodeBox(v3s16(x,y,z), BS);
/*
See if the player is touching ground.
Player touches ground if player's minimum Y is near node's
maximum Y and player's X-Z-area overlaps with the node's
X-Z-area.
Use 0.15*BS so that it is easier to get on a node.
*/
if(
//fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < d
fabs(nodebox.MaxEdge.Y-playerbox.MinEdge.Y) < 0.15*BS
&& nodebox.MaxEdge.X-d > playerbox.MinEdge.X
&& nodebox.MinEdge.X+d < playerbox.MaxEdge.X
&& nodebox.MaxEdge.Z-d > playerbox.MinEdge.Z
&& nodebox.MinEdge.Z+d < playerbox.MaxEdge.Z
){
touching_ground = true;
if(is_unloaded)
standing_on_unloaded = true;
}
// If player doesn't intersect with node, ignore node.
if(playerbox.intersectsWithBox(nodebox) == false)
continue;
/*
Go through every axis
*/
v3f dirs[3] = {
v3f(0,0,1), // back-front
v3f(0,1,0), // top-bottom
v3f(1,0,0), // right-left
};
for(u16 i=0; i<3; i++)
{
/*
Calculate values along the axis
*/
f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[i]);
f32 nodemin = nodebox.MinEdge.dotProduct(dirs[i]);
f32 playermax = playerbox.MaxEdge.dotProduct(dirs[i]);
f32 playermin = playerbox.MinEdge.dotProduct(dirs[i]);
f32 playermax_old = playerbox_old.MaxEdge.dotProduct(dirs[i]);
f32 playermin_old = playerbox_old.MinEdge.dotProduct(dirs[i]);
/*
Check collision for the axis.
Collision happens when player is going through a surface.
*/
/*f32 neg_d = d;
f32 pos_d = d;
// Make it easier to get on top of a node
if(i == 1)
neg_d = 0.15*BS;
bool negative_axis_collides =
(nodemax > playermin && nodemax <= playermin_old + neg_d
&& m_speed.dotProduct(dirs[i]) < 0);
bool positive_axis_collides =
(nodemin < playermax && nodemin >= playermax_old - pos_d
&& m_speed.dotProduct(dirs[i]) > 0);*/
bool negative_axis_collides =
(nodemax > playermin && nodemax <= playermin_old + d
&& m_speed.dotProduct(dirs[i]) < 0);
bool positive_axis_collides =
(nodemin < playermax && nodemin >= playermax_old - d
&& m_speed.dotProduct(dirs[i]) > 0);
bool main_axis_collides =
negative_axis_collides || positive_axis_collides;
/*
Check overlap of player and node in other axes
*/
bool other_axes_overlap = true;
for(u16 j=0; j<3; j++)
{
if(j == i)
continue;
f32 nodemax = nodebox.MaxEdge.dotProduct(dirs[j]);
f32 nodemin = nodebox.MinEdge.dotProduct(dirs[j]);
f32 playermax = playerbox.MaxEdge.dotProduct(dirs[j]);
f32 playermin = playerbox.MinEdge.dotProduct(dirs[j]);
if(!(nodemax - d > playermin && nodemin + d < playermax))
{
other_axes_overlap = false;
break;
}
}
/*
If this is a collision, revert the position in the main
direction.
*/
if(other_axes_overlap && main_axis_collides)
{
//v3f old_speed = m_speed;
m_speed -= m_speed.dotProduct(dirs[i]) * dirs[i];
position -= position.dotProduct(dirs[i]) * dirs[i];
position += oldpos.dotProduct(dirs[i]) * dirs[i];
/*if(collision_info)
{
// Report fall collision
if(old_speed.Y < m_speed.Y - 0.1)
{
CollisionInfo info;
info.t = COLLISION_FALL;
info.speed = m_speed.Y - old_speed.Y;
collision_info->push_back(info);
}
}*/
}
}
} // xyz
/*
Check the nodes under the player to see from which node the
player is sneaking from, if any.
*/
{
v3s16 pos_i_bottom = floatToInt(position - v3f(0,BS/2,0), BS);
v2f player_p2df(position.X, position.Z);
f32 min_distance_f = 100000.0*BS;
// If already seeking from some node, compare to it.
/*if(m_sneak_node_exists)
{
v3f sneaknode_pf = intToFloat(m_sneak_node, BS);
v2f sneaknode_p2df(sneaknode_pf.X, sneaknode_pf.Z);
f32 d_horiz_f = player_p2df.getDistanceFrom(sneaknode_p2df);
f32 d_vert_f = fabs(sneaknode_pf.Y + BS*0.5 - position.Y);
// Ignore if player is not on the same level (likely dropped)
if(d_vert_f < 0.15*BS)
min_distance_f = d_horiz_f;
}*/
v3s16 new_sneak_node = m_sneak_node;
for(s16 x=-1; x<=1; x++)
for(s16 z=-1; z<=1; z++)
{
v3s16 p = pos_i_bottom + v3s16(x,0,z);
v3f pf = intToFloat(p, BS);
v2f node_p2df(pf.X, pf.Z);
f32 distance_f = player_p2df.getDistanceFrom(node_p2df);
f32 max_axis_distance_f = MYMAX(
fabs(player_p2df.X-node_p2df.X),
fabs(player_p2df.Y-node_p2df.Y));
if(distance_f > min_distance_f ||
max_axis_distance_f > 0.5*BS + sneak_max + 0.1*BS)
continue;
try{
// The node to be sneaked on has to be walkable
if(nodemgr->get(map.getNode(p)).walkable == false)
continue;
// And the node above it has to be nonwalkable
if(nodemgr->get(map.getNode(p+v3s16(0,1,0))).walkable == true)
continue;
}
catch(InvalidPositionException &e)
{
continue;
}
min_distance_f = distance_f;
new_sneak_node = p;
}
bool sneak_node_found = (min_distance_f < 100000.0*BS*0.9);
if(control.sneak && m_sneak_node_exists)
{
if(sneak_node_found)
m_sneak_node = new_sneak_node;
}
else
{
m_sneak_node = new_sneak_node;
m_sneak_node_exists = sneak_node_found;
}
/*
If sneaking, the player's collision box can be in air, so
this has to be set explicitly
*/
if(sneak_node_found && control.sneak)
touching_ground = true;
}
/*
Set new position
*/
setPosition(position);
/*
Report collisions
*/
if(collision_info)
{
// Report fall collision
if(old_speed.Y < m_speed.Y - 0.1 && !standing_on_unloaded)
{
CollisionInfo info;
info.t = COLLISION_FALL;
info.speed = m_speed.Y - old_speed.Y;
collision_info->push_back(info);
}
}
}
void LocalPlayer::move(f32 dtime, Map &map, f32 pos_max_d)
{
move(dtime, map, pos_max_d, NULL);
}
void LocalPlayer::applyControl(float dtime)
{
// Clear stuff
swimming_up = false;
// Random constants
f32 walk_acceleration = 4.0 * BS;
f32 walkspeed_max = 4.0 * BS;
setPitch(control.pitch);
setYaw(control.yaw);
v3f move_direction = v3f(0,0,1);
move_direction.rotateXZBy(getYaw());
v3f speed = v3f(0,0,0);
bool free_move = g_settings->getBool("free_move");
bool fast_move = g_settings->getBool("fast_move");
bool continuous_forward = g_settings->getBool("continuous_forward");
if(free_move || is_climbing)
{
v3f speed = getSpeed();
speed.Y = 0;
setSpeed(speed);
}
// Whether superspeed mode is used or not
bool superspeed = false;
// If free movement and fast movement, always move fast
if(free_move && fast_move)
superspeed = true;
// Auxiliary button 1 (E)
if(control.aux1)
{
if(free_move)
{
// In free movement mode, aux1 descends
v3f speed = getSpeed();
if(fast_move)
speed.Y = -20*BS;
else
speed.Y = -walkspeed_max;
setSpeed(speed);
}
else if(is_climbing)
{
v3f speed = getSpeed();
speed.Y = -3*BS;
setSpeed(speed);
}
else
{
// If not free movement but fast is allowed, aux1 is
// "Turbo button"
if(fast_move)
superspeed = true;
}
}
if(continuous_forward)
speed += move_direction;
if(control.up)
{
if(continuous_forward)
superspeed = true;
else
speed += move_direction;
}
if(control.down)
{
speed -= move_direction;
}
if(control.left)
{
speed += move_direction.crossProduct(v3f(0,1,0));
}
if(control.right)
{
speed += move_direction.crossProduct(v3f(0,-1,0));
}
if(control.jump)
{
if(free_move)
{
v3f speed = getSpeed();
if(fast_move)
speed.Y = 20*BS;
else
speed.Y = walkspeed_max;
setSpeed(speed);
}
else if(touching_ground)
{
/*
NOTE: The d value in move() affects jump height by
raising the height at which the jump speed is kept
at its starting value
*/
v3f speed = getSpeed();
if(speed.Y >= -0.5*BS)
{
speed.Y = 6.5*BS;
setSpeed(speed);
}
}
// Use the oscillating value for getting out of water
// (so that the player doesn't fly on the surface)
else if(in_water)
{
v3f speed = getSpeed();
speed.Y = 1.5*BS;
setSpeed(speed);
swimming_up = true;
}
else if(is_climbing)
{
v3f speed = getSpeed();
speed.Y = 3*BS;
setSpeed(speed);
}
}
// The speed of the player (Y is ignored)
if(superspeed)
speed = speed.normalize() * walkspeed_max * 5.0;
else if(control.sneak)
speed = speed.normalize() * walkspeed_max / 3.0;
else
speed = speed.normalize() * walkspeed_max;
f32 inc = walk_acceleration * BS * dtime;
// Faster acceleration if fast and free movement
if(free_move && fast_move)
inc = walk_acceleration * BS * dtime * 10;
// Accelerate to target speed with maximum increment
accelerate(speed, inc);
}
#endif