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actors.c
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actors.c
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/*
C-Dogs SDL
A port of the legendary (and fun) action/arcade cdogs.
Copyright (C) 1995 Ronny Wester
Copyright (C) 2003 Jeremy Chin
Copyright (C) 2003-2007 Lucas Martin-King
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
This file incorporates work covered by the following copyright and
permission notice:
Copyright (c) 2013-2014, Cong Xu
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include "actors.h"
#include <assert.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "ai_utils.h"
#include "character.h"
#include "collision.h"
#include "config.h"
#include "drawtools.h"
#include "game_events.h"
#include "pic_manager.h"
#include "sounds.h"
#include "defs.h"
#include "objs.h"
#include "gamedata.h"
#include "triggers.h"
#include "hiscores.h"
#include "mission.h"
#include "game.h"
#include "utils.h"
#define SOUND_LOCK_FOOTSTEP 4
#define FOOTSTEP_DISTANCE_PLUS 380
#define REPEL_STRENGTH 14
#define SLIDE_LOCK 50
#define SLIDE_X (TILE_WIDTH / 3)
#define SLIDE_Y (TILE_HEIGHT / 3)
#define VEL_DECAY_X (TILE_WIDTH * 2)
#define VEL_DECAY_Y (TILE_WIDTH * 2) // Note: deliberately tile width
int gPlayerIds[MAX_PLAYERS];
TranslationTable tableFlamed;
TranslationTable tableGreen;
TranslationTable tablePoison;
TranslationTable tableGray;
TranslationTable tableBlack;
TranslationTable tableDarker;
TranslationTable tablePurple;
CArray gActors;
static int transitionTable[STATE_COUNT] = {
0,
STATE_IDLE,
STATE_IDLE,
STATE_WALKING_2,
STATE_WALKING_3,
STATE_WALKING_4,
STATE_WALKING_1
};
static int delayTable[STATE_COUNT] = {
90,
60,
60,
4,
4,
4,
4,
};
// Initialise the actor post-placement
void ActorInit(TActor *actor)
{
actor->direction = rand() % DIRECTION_COUNT;
actor->health = (actor->health * gConfig.Game.NonPlayerHP) / 100;
if (actor->health <= 0)
{
actor->health = 1;
}
if (actor->flags & FLAGS_AWAKEALWAYS)
{
actor->flags &= ~FLAGS_SLEEPING;
}
}
int GetNumPlayersAlive(void)
{
int numPlayers = 0;
for (int i = 0; i < MAX_PLAYERS; i++)
{
if (IsPlayerAlive(i))
{
numPlayers++;
}
}
return numPlayers;
}
TActor *GetFirstAlivePlayer(void)
{
for (int i = 0; i < MAX_PLAYERS; i++)
{
if (IsPlayerAlive(i))
{
return CArrayGet(&gActors, gPlayerIds[i]);
}
}
return NULL;
}
bool IsPlayerAlive(int player)
{
if (gPlayerIds[player] == -1)
{
return false;
}
TActor *p = CArrayGet(&gActors, gPlayerIds[player]);
return !p->dead;
}
Vec2i PlayersGetMidpoint(void)
{
// for all surviving players, find bounding rectangle, and get center
Vec2i min;
Vec2i max;
PlayersGetBoundingRectangle(&min, &max);
return Vec2iScaleDiv(Vec2iAdd(min, max), 2);
}
void PlayersGetBoundingRectangle(Vec2i *min, Vec2i *max)
{
int isFirst = 1;
*min = Vec2iZero();
*max = Vec2iZero();
for (int i = 0; i < MAX_PLAYERS; i++)
{
if (IsPlayerAlive(i))
{
TActor *player = CArrayGet(&gActors, gPlayerIds[i]);
TTileItem *p = &player->tileItem;
if (isFirst)
{
*min = *max = Vec2iNew(p->x, p->y);
}
else
{
if (p->x < min->x) min->x = p->x;
if (p->y < min->y) min->y = p->y;
if (p->x > max->x) max->x = p->x;
if (p->y > max->y) max->y = p->y;
}
isFirst = 0;
}
}
}
static ActorPics GetCharacterPics(int id)
{
ActorPics pics;
memset(&pics, 0, sizeof pics);
TActor *actor = CArrayGet(&gActors, id);
direction_e dir = actor->direction;
direction_e headDir = dir;
int state = actor->state;
int headState = state;
Character *c = actor->character;
pics.Table = (TranslationTable *)c->table;
int f = c->looks.face;
int g = GunGetPic(actor->weapon.gun);
gunstate_e gunState = actor->weapon.state;
TOffsetPic body, head, gun;
pics.IsTransparent = !!(actor->flags & FLAGS_SEETHROUGH);
if (gunState == GUNSTATE_FIRING || gunState == GUNSTATE_RECOIL)
{
headState = STATE_COUNT + gunState - GUNSTATE_FIRING;
}
if (actor->flamed)
{
pics.Table = &tableFlamed;
pics.Tint = &tintRed;
}
else if (actor->poisoned)
{
pics.Table = &tableGreen;
pics.Tint = &tintPoison;
}
else if (actor->petrified)
{
pics.Table = &tableGray;
pics.Tint = &tintGray;
}
else if (actor->confused)
{
pics.Table = &tablePurple;
pics.Tint = &tintPurple;
}
else if (pics.IsTransparent)
{
pics.Table = &tableDarker;
pics.Tint = &tintDarker;
}
actor->flags |= FLAGS_VISIBLE;
// TODO: this means any character wakes up when visible
actor->flags &= ~FLAGS_SLEEPING;
if (state == STATE_IDLELEFT)
headDir = (dir + 7) % 8;
else if (state == STATE_IDLERIGHT)
headDir = (dir + 1) % 8;
int b = g < 0 ? BODY_UNARMED : BODY_ARMED;
body.dx = cBodyOffset[b][dir].dx;
body.dy = cBodyOffset[b][dir].dy;
body.picIndex = cBodyPic[b][dir][state];
if (actor->dead)
{
pics.IsDead = true;
if (actor->dead <= DEATH_MAX)
{
pics.IsDying = true;
body = cDeathPics[actor->dead - 1];
pics.Pics[0] = PicFromTOffsetPic(&gPicManager, body);
pics.OldPics[0] = body.picIndex;
}
goto bail;
}
head.dx = cNeckOffset[b][dir].dx + cHeadOffset[f][headDir].dx;
head.dy = cNeckOffset[b][dir].dy + cHeadOffset[f][headDir].dy;
head.picIndex = cHeadPic[f][headDir][headState];
if (g >= 0) {
gun.dx =
cGunHandOffset[b][dir].dx +
cGunPics[g][dir][gunState].dx;
gun.dy =
cGunHandOffset[b][dir].dy +
cGunPics[g][dir][gunState].dy;
gun.picIndex = cGunPics[g][dir][gunState].picIndex;
} else
gun.picIndex = -1;
switch (dir)
{
case DIRECTION_UP:
case DIRECTION_UPRIGHT:
pics.Pics[0] = PicFromTOffsetPic(&gPicManager, gun);
pics.Pics[1] = PicFromTOffsetPic(&gPicManager, head);
pics.Pics[2] = PicFromTOffsetPic(&gPicManager, body);
pics.OldPics[0] = gun.picIndex;
pics.OldPics[1] = head.picIndex;
pics.OldPics[2] = body.picIndex;
break;
case DIRECTION_RIGHT:
case DIRECTION_DOWNRIGHT:
case DIRECTION_DOWN:
case DIRECTION_DOWNLEFT:
pics.Pics[0] = PicFromTOffsetPic(&gPicManager, body);
pics.Pics[1] = PicFromTOffsetPic(&gPicManager, head);
pics.Pics[2] = PicFromTOffsetPic(&gPicManager, gun);
pics.OldPics[0] = body.picIndex;
pics.OldPics[1] = head.picIndex;
pics.OldPics[2] = gun.picIndex;
break;
case DIRECTION_LEFT:
case DIRECTION_UPLEFT:
pics.Pics[0] = PicFromTOffsetPic(&gPicManager, gun);
pics.Pics[1] = PicFromTOffsetPic(&gPicManager, body);
pics.Pics[2] = PicFromTOffsetPic(&gPicManager, head);
pics.OldPics[0] = gun.picIndex;
pics.OldPics[1] = body.picIndex;
pics.OldPics[2] = head.picIndex;
break;
default:
assert(0 && "invalid direction");
goto bail;
}
bail:
return pics;
}
void SetStateForActor(TActor * actor, int state)
{
actor->state = state;
actor->stateCounter = delayTable[state];
}
void UpdateActorState(TActor * actor, int ticks)
{
WeaponUpdate(
&actor->weapon,
ticks,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
if (actor->health > 0)
{
actor->flamed = MAX(0, actor->flamed - ticks);
if (actor->poisoned)
{
if ((actor->poisoned & 7) == 0)
{
InjureActor(actor, 1);
}
actor->poisoned = MAX(0, actor->poisoned - ticks);
}
actor->petrified = MAX(0, actor->petrified - ticks);
actor->confused = MAX(0, actor->confused - ticks);
}
actor->slideLock = MAX(0, actor->slideLock - ticks);
actor->stateCounter = MAX(0, actor->stateCounter - ticks);
if (actor->stateCounter > 0)
{
return;
}
if (actor->health <= 0) {
actor->dead++;
actor->stateCounter = 4;
actor->tileItem.flags = 0;
return;
}
// Footstep sounds
if (gConfig.Sound.Footsteps &&
(actor->state == STATE_WALKING_1 ||
actor->state == STATE_WALKING_2 ||
actor->state == STATE_WALKING_3 ||
actor->state == STATE_WALKING_4) &&
actor->soundLock <= 0)
{
SoundPlayAtPlusDistance(
&gSoundDevice,
SND_FOOTSTEP,
Vec2iNew(actor->tileItem.x, actor->tileItem.y),
FOOTSTEP_DISTANCE_PLUS);
actor->soundLock = SOUND_LOCK_FOOTSTEP;
}
if (actor->state == STATE_IDLE && !actor->petrified)
SetStateForActor(actor, ((rand() & 1) != 0 ?
STATE_IDLELEFT :
STATE_IDLERIGHT));
else
SetStateForActor(actor, transitionTable[actor->state]);
// Sound lock
actor->soundLock = MAX(0, actor->soundLock - ticks);
}
static void CheckTrigger(const Vec2i tilePos)
{
const Tile *t = MapGetTile(&gMap, tilePos);
int i;
for (i = 0; i < (int)t->triggers.size; i++)
{
Trigger **tp = CArrayGet(&t->triggers, i);
if (TriggerCanActivate(*tp, gMission.flags))
{
GameEvent e;
e.Type = GAME_EVENT_TRIGGER;
e.u.Trigger.Id = (*tp)->id;
e.u.Trigger.TilePos = tilePos;
GameEventsEnqueue(&gGameEvents, e);
}
}
}
static void PickupObject(TActor * actor, TObject * object)
{
bool isKey = false;
bool canPickup = true;
switch (object->Type)
{
case OBJ_JEWEL:
{
GameEvent e;
e.Type = GAME_EVENT_SCORE;
e.u.Score.PlayerIndex = actor->pData->playerIndex;
e.u.Score.Score = PICKUP_SCORE;
GameEventsEnqueue(&gGameEvents, e);
SoundPlayAt(
&gSoundDevice,
SND_PICKUP,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
}
break;
case OBJ_HEALTH:
// Don't pick up unless taken damage
canPickup = false;
if (actor->health < actor->character->maxHealth)
{
canPickup = true;
GameEvent e;
e.Type = GAME_EVENT_TAKE_HEALTH_PICKUP;
e.u.PickupPlayer = actor->pData->playerIndex;
GameEventsEnqueue(&gGameEvents, e);
SoundPlayAt(
&gSoundDevice, SND_HEALTH,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
}
break;
case OBJ_KEYCARD_RED:
gMission.flags |= FLAGS_KEYCARD_RED;
isKey = true;
break;
case OBJ_KEYCARD_BLUE:
gMission.flags |= FLAGS_KEYCARD_BLUE;
isKey = true;
break;
case OBJ_KEYCARD_GREEN:
gMission.flags |= FLAGS_KEYCARD_GREEN;
isKey = true;
break;
case OBJ_KEYCARD_YELLOW:
gMission.flags |= FLAGS_KEYCARD_YELLOW;
isKey = true;
break;
default:
CASSERT(false, "unexpected objective");
break;
}
if (isKey)
{
SoundPlayAt(
&gSoundDevice, SND_KEY,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
}
UpdateMissionObjective(
&gMission, object->tileItem.flags, OBJECTIVE_COLLECT,
actor->pData->playerIndex,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
if (canPickup)
{
ObjDestroy(object->tileItem.id);
}
}
bool TryMoveActor(TActor *actor, Vec2i pos)
{
TTileItem *target;
TObject *object;
Vec2i realPos = Vec2iFull2Real(pos);
Vec2i size = Vec2iNew(actor->tileItem.w, actor->tileItem.h);
bool isDogfight = gCampaign.Entry.Mode == CAMPAIGN_MODE_DOGFIGHT;
// Check collision with wall; try to limit x and y movement if still in
// collision in those axes
if (IsCollisionWallOrEdge(&gMap, realPos, size))
{
Vec2i realXPos, realYPos;
realYPos = Vec2iFull2Real(Vec2iNew(actor->Pos.x, pos.y));
if (IsCollisionWallOrEdge(&gMap, realYPos, size))
{
pos.y = actor->Pos.y;
}
realXPos = Vec2iFull2Real(Vec2iNew(pos.x, actor->Pos.y));
if (IsCollisionWallOrEdge(&gMap, realXPos, size))
{
pos.x = actor->Pos.x;
}
if (pos.x != actor->Pos.x && pos.y != actor->Pos.y)
{
// Both x-only or y-only movement are viable,
// i.e. we are colliding corner vs corner
// Arbitrarily choose x-only movement
pos.y = actor->Pos.y;
}
else if (pos.x == actor->Pos.x && pos.y == actor->Pos.y)
{
return 0;
}
}
realPos = Vec2iFull2Real(pos);
target = GetItemOnTileInCollision(
&actor->tileItem, realPos, TILEITEM_IMPASSABLE,
CalcCollisionTeam(1, actor),
isDogfight);
if (target)
{
Vec2i realXPos, realYPos;
if (actor->pData && target->kind == KIND_CHARACTER)
{
TActor *otherCharacter = CArrayGet(&gActors, target->id);
CASSERT(otherCharacter->isInUse, "Cannot find nonexistent player");
if (otherCharacter
&& (otherCharacter->flags & FLAGS_PRISONER) !=
0) {
otherCharacter->flags &= ~FLAGS_PRISONER;
UpdateMissionObjective(
&gMission,
otherCharacter->tileItem.flags,
OBJECTIVE_RESCUE,
actor->pData->playerIndex,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
}
}
if (actor->weapon.gun == GUN_KNIFE && actor->health > 0)
{
object = target->kind == KIND_OBJECT ?
CArrayGet(&gObjs, target->id) : NULL;
if (!object || (object->flags & OBJFLAG_DANGEROUS) == 0)
{
DamageSomething(
Vec2iZero(),
2,
actor->flags,
actor->pData ? actor->pData->playerIndex : -1,
target,
SPECIAL_KNIFE,
actor->weapon.soundLock <= 0);
if (actor->weapon.soundLock <= 0)
{
actor->weapon.soundLock +=
gGunDescriptions[actor->weapon.gun].SoundLockLength;
}
return 0;
}
}
realYPos = Vec2iFull2Real(Vec2iNew(actor->Pos.x, pos.y));
if (GetItemOnTileInCollision(
&actor->tileItem, realYPos, TILEITEM_IMPASSABLE,
CalcCollisionTeam(1, actor),
isDogfight))
{
pos.y = actor->Pos.y;
}
realXPos = Vec2iFull2Real(Vec2iNew(pos.x, actor->Pos.y));
if (GetItemOnTileInCollision(
&actor->tileItem, realXPos, TILEITEM_IMPASSABLE,
CalcCollisionTeam(1, actor),
isDogfight))
{
pos.x = actor->Pos.x;
}
if (pos.x != actor->Pos.x && pos.y != actor->Pos.y)
{
// Both x-only or y-only movement are viable,
// i.e. we are colliding corner vs corner
// Arbitrarily choose x-only movement
pos.y = actor->Pos.y;
}
realPos = Vec2iFull2Real(pos);
if ((pos.x == actor->Pos.x && pos.y == actor->Pos.y) ||
IsCollisionWallOrEdge(&gMap, realPos, size))
{
return 0;
}
}
CheckTrigger(Vec2iToTile(realPos));
if (actor->pData)
{
target = GetItemOnTileInCollision(
&actor->tileItem, realPos, TILEITEM_CAN_BE_TAKEN,
CalcCollisionTeam(1, actor),
isDogfight);
if (target && target->kind == KIND_OBJECT)
{
PickupObject(actor, CArrayGet(&gObjs, target->id));
}
}
actor->Pos = pos;
MapMoveTileItem(&gMap, &actor->tileItem, Vec2iFull2Real(actor->Pos));
if (MapIsTileInExit(&gMap, &actor->tileItem))
{
actor->action = ACTORACTION_EXITING;
}
else
{
actor->action = ACTORACTION_MOVING;
}
return 1;
}
void PlayRandomScreamAt(Vec2i pos)
{
#define SCREAM_COUNT 4
static sound_e screamTable[SCREAM_COUNT] =
{ SND_KILL, SND_KILL2, SND_KILL3, SND_KILL4 };
static int screamIndex = 0;
SoundPlayAt(&gSoundDevice, screamTable[screamIndex], pos);
screamIndex++;
if (screamIndex >= SCREAM_COUNT)
{
screamIndex = 0;
}
}
void ActorHeal(TActor *actor, int health)
{
actor->health += health;
actor->health = MIN(actor->health, 200 * gConfig.Game.PlayerHP / 100);
}
void InjureActor(TActor * actor, int injury)
{
actor->health -= injury;
if (actor->health <= 0) {
actor->stateCounter = 0;
Vec2i pos = Vec2iNew(actor->tileItem.x, actor->tileItem.y);
PlayRandomScreamAt(pos);
if (actor->pData)
{
SoundPlayAt(
&gSoundDevice,
SND_HAHAHA,
pos);
}
UpdateMissionObjective(
&gMission, actor->tileItem.flags, OBJECTIVE_KILL,
-1, pos);
}
}
void Score(struct PlayerData *p, int points)
{
if (p)
{
p->score += points;
p->totalScore += points;
}
}
void Shoot(TActor *actor)
{
if (!WeaponCanFire(&actor->weapon))
{
return;
}
WeaponFire(
&actor->weapon,
actor->direction,
actor->Pos,
actor->flags,
actor->pData ? actor->pData->playerIndex : -1);
if (actor->pData && GunGetCost(actor->weapon.gun) != 0)
{
GameEvent e;
e.Type = GAME_EVENT_SCORE;
e.u.Score.PlayerIndex = actor->pData->playerIndex;
e.u.Score.Score = -GunGetCost(actor->weapon.gun);
GameEventsEnqueue(&gGameEvents, e);
}
}
int ActorTryChangeDirection(TActor *actor, int cmd)
{
int willChangeDirecton =
!actor->petrified &&
(cmd & (CMD_LEFT | CMD_RIGHT | CMD_UP | CMD_DOWN)) &&
(!(cmd & CMD_BUTTON2) || gConfig.Game.SwitchMoveStyle != SWITCHMOVE_STRAFE);
if (willChangeDirecton)
{
actor->direction = CmdToDirection(cmd);
}
return willChangeDirecton;
}
int ActorTryShoot(TActor *actor, int cmd)
{
int willShoot = !actor->petrified && (cmd & CMD_BUTTON1);
if (willShoot)
{
Shoot(actor);
}
else
{
WeaponHoldFire(&actor->weapon);
}
return willShoot;
}
static bool ActorTryMove(TActor *actor, int cmd, int hasShot, int ticks);
void CommandActor(TActor * actor, int cmd, int ticks)
{
actor->MovePos = actor->Pos;
actor->lastCmd = cmd;
if (actor->confused)
{
cmd = CmdGetReverse(cmd);
}
if (actor->health > 0)
{
int hasChangedDirection, hasShot, hasMoved;
hasChangedDirection = ActorTryChangeDirection(actor, cmd);
hasShot = ActorTryShoot(actor, cmd);
hasMoved = ActorTryMove(actor, cmd, hasShot, ticks);
if (!hasChangedDirection && !hasShot && !hasMoved)
{
// Idle if player hasn't done anything
if (actor->state != STATE_IDLE &&
actor->state != STATE_IDLELEFT &&
actor->state != STATE_IDLERIGHT)
{
SetStateForActor(actor, STATE_IDLE);
}
}
}
}
static bool ActorTryMove(TActor *actor, int cmd, int hasShot, int ticks)
{
int canMoveWhenShooting =
gConfig.Game.MoveWhenShooting ||
!hasShot ||
(gConfig.Game.SwitchMoveStyle == SWITCHMOVE_STRAFE &&
actor->flags & FLAGS_SPECIAL_USED);
bool willMove =
!actor->petrified &&
(cmd & (CMD_LEFT | CMD_RIGHT | CMD_UP | CMD_DOWN)) &&
canMoveWhenShooting;
if (willMove)
{
int moveAmount = actor->character->speed * ticks;
if (cmd & CMD_LEFT)
{
actor->MovePos.x -= moveAmount;
}
else if (cmd & CMD_RIGHT)
{
actor->MovePos.x += moveAmount;
}
if (cmd & CMD_UP)
{
actor->MovePos.y -= moveAmount;
}
else if (cmd & CMD_DOWN)
{
actor->MovePos.y += moveAmount;
}
if (actor->state != STATE_WALKING_1 &&
actor->state != STATE_WALKING_2 &&
actor->state != STATE_WALKING_3 &&
actor->state != STATE_WALKING_4)
{
SetStateForActor(actor, STATE_WALKING_1);
}
}
else
{
if (actor->state == STATE_WALKING_1 ||
actor->state == STATE_WALKING_2 ||
actor->state == STATE_WALKING_3 ||
actor->state == STATE_WALKING_4)
{
SetStateForActor(actor, STATE_IDLE);
}
}
return willMove;
}
void SlideActor(TActor *actor, int cmd)
{
// Check that actor can slide
if (actor->slideLock > 0)
{
return;
}
if (actor->petrified)
return;
if (actor->confused)
{
cmd = CmdGetReverse(cmd);
}
actor->Vel = Vec2iZero();
if (cmd & CMD_LEFT) actor->Vel.x = -SLIDE_X * 256;
else if (cmd & CMD_RIGHT) actor->Vel.x = SLIDE_X * 256;
if (cmd & CMD_UP) actor->Vel.y = -SLIDE_Y * 256;
else if (cmd & CMD_DOWN) actor->Vel.y = SLIDE_Y * 256;
// Slide sound
if (gConfig.Sound.Footsteps)
{
SoundPlayAt(
&gSoundDevice,
SND_SLIDE,
Vec2iNew(actor->tileItem.x, actor->tileItem.y));
}
actor->slideLock = SLIDE_LOCK;
}
static void ActorUpdatePosition(TActor *actor, int ticks);
void UpdateAllActors(int ticks)
{
for (int i = 0; i < (int)gActors.size; i++)
{
TActor *actor = CArrayGet(&gActors, i);
if (!actor->isInUse)
{
continue;
}
ActorUpdatePosition(actor, ticks);
UpdateActorState(actor, ticks);
if (actor->dead > DEATH_MAX)
{
AddObjectOld(
actor->Pos.x, actor->Pos.y,
Vec2iZero(),
&cBloodPics[rand() % BLOOD_MAX],
OBJ_NONE,
TILEITEM_IS_WRECK);
ActorDestroy(i);
}
else
{
// Find actors that are on the same team and colliding,
// and repel them
if (gConfig.Game.AllyCollision == ALLYCOLLISION_REPEL)
{
Vec2i realPos = Vec2iFull2Real(actor->Pos);
TTileItem *collidingItem = GetItemOnTileInCollision(
&actor->tileItem, realPos, TILEITEM_IMPASSABLE,
COLLISIONTEAM_NONE,
gCampaign.Entry.Mode == CAMPAIGN_MODE_DOGFIGHT);
if (collidingItem && collidingItem->kind == KIND_CHARACTER)
{
TActor *collidingActor = CArrayGet(
&gActors, collidingItem->id);
if (CalcCollisionTeam(1, collidingActor) ==
CalcCollisionTeam(1, actor))
{
Vec2i v = Vec2iMinus(actor->Pos, collidingActor->Pos);
if (Vec2iEqual(v, Vec2iZero()))
{
v = Vec2iNew(1, 0);
}
v = Vec2iScale(Vec2iNorm(v), REPEL_STRENGTH);
GameEvent e;
e.Type = GAME_EVENT_ACTOR_IMPULSE;
e.u.ActorImpulse.Id = actor->tileItem.id;
e.u.ActorImpulse.Vel = v;
GameEventsEnqueue(&gGameEvents, e);
e.u.ActorImpulse.Id = collidingActor->tileItem.id;
e.u.ActorImpulse.Vel = Vec2iScale(v, -1);
GameEventsEnqueue(&gGameEvents, e);
}
}
}
}
}
}
static void ActorUpdatePosition(TActor *actor, int ticks)
{
if (!Vec2iEqual(actor->Vel, Vec2iZero()))
{
actor->MovePos = Vec2iAdd(
actor->MovePos, Vec2iScale(actor->Vel, ticks));
for (int i = 0; i < ticks; i++)
{
if (actor->Vel.x > 0)
{
actor->Vel.x = MAX(0, actor->Vel.x - VEL_DECAY_X);
}
else
{
actor->Vel.x = MIN(0, actor->Vel.x + VEL_DECAY_X);
}
if (actor->Vel.y > 0)
{
actor->Vel.y = MAX(0, actor->Vel.y - VEL_DECAY_Y);
}
else
{
actor->Vel.y = MIN(0, actor->Vel.y + VEL_DECAY_Y);
}
}
}
if (!Vec2iEqual(actor->MovePos, Vec2iZero()))
{
TryMoveActor(actor, actor->MovePos);
actor->MovePos = Vec2iZero();
}
}
void ActorsInit(void)
{
CArrayInit(&gActors, sizeof(TActor));
CArrayReserve(&gActors, 64);
for (int i = 0; i < MAX_PLAYERS; i++)
{
gPlayerIds[i] = -1;
}
}
void ActorsTerminate(void)
{
for (int i = 0; i < (int)gActors.size; i++)
{
TActor *actor = CArrayGet(&gActors, i);
if (actor->isInUse)
{
ActorDestroy(i);
}
}
CArrayTerminate(&gActors);
}
int ActorAdd(Character *c, struct PlayerData *p)
{
// Find an empty slot in actor list
TActor *actor = NULL;
int i;
for (i = 0; i < (int)gActors.size; i++)
{
TActor *a = CArrayGet(&gActors, i);
if (!a->isInUse)
{
actor = a;
break;
}
}
if (actor == NULL)
{
TActor a;
memset(&a, 0, sizeof a);
CArrayPushBack(&gActors, &a);
i = (int)gActors.size - 1;
actor = CArrayGet(&gActors, i);
}
memset(actor, 0, sizeof *actor);
actor->weapon = WeaponCreate(c->gun);
actor->health = c->maxHealth;