NXEngine v1.0.0.5

[NXEngine.git] / game.cpp

#include "nx.h"
#include "endgame/island.h"
#include "endgame/credits.h"
#include "intro/intro.h"
#include "intro/title.h"
#include "pause/pause.h"
#include "pause/options.h"
#include "inventory.h"
#include "map_system.h"
#include "game.h"
#include "profile.h"
#include "game.fdh"

static struct TickFunctions
{
        void (*OnTick)(void);
        bool (*OnEnter)(int param);
        void (*OnExit)(void);
}
tickfunctions[] =
{
        NULL,                           NULL,                   NULL,                   // GM_NONE
        game_tick_normal,       NULL,                   NULL,                   // GM_NORMAL
        inventory_tick,         inventory_init, NULL,                   // GM_INVENTORY
        ms_tick,                        ms_init,                ms_close,               // GM_MAP_SYSTEM
        island_tick,            island_init,    NULL,                   // GM_ISLAND
        credit_tick,            credit_init,    credit_close,   // GM_CREDITS
        intro_tick,                     intro_init,             NULL,                   // GM_INTRO
        title_tick,                     title_init,             NULL,                   // GM_TITLE
        pause_tick,                     pause_init,             NULL,                   // GP_PAUSED
        options_tick,           options_init,   options_close   // GP_OPTIONS
        //old_options_tick,             old_options_init,       old_options_close       // GP_OPTIONS
};

Object *onscreen_objects[MAX_OBJECTS];
int nOnscreenObjects;

Game game;
TextBox textbox;
DebugConsole console;
ObjProp objprop[OBJ_LAST];

// init Game object: only called once during startup
bool Game::init()
{
int i;

        memset(&game, 0, sizeof(game));
        
        // set default properties
        memset(objprop, 0, sizeof(objprop));
        for(i=0;i<OBJ_LAST;i++)
        {
                objprop[i].shaketime = 16;
                #ifdef DEBUG    // big red "NO" sprite points out unimplemented objects
                        objprop[i].sprite = SPR_UNIMPLEMENTED_OBJECT;
                #else
                        objprop[i].sprite = SPR_NULL;
                #endif
        }
        
        AssignSprites();                // auto-generated function to assign sprites to objects
        AssignExtraSprites();   // assign rest of sprites (to be replaced at some point)
        
        if (ai_init()) return 1;                        // setup function pointers to AI routines
        
        if (initslopetable()) return 1;
        if (initmapfirsttime()) return 1;
        
        // create the player object--note that the player is NOT destroyed on map change
        if (game.createplayer()) return 1;
        
        return 0;
}


// reset things to prepare for entry to the next stage
bool Game::initlevel()
{
        Carets::DestroyAll();   // delete smoke clouds, ZZzz's etc...
        ScreenEffects::Stop();  // prevents white flash after island scene when ballos defeated
        
        game.frozen = false;
        game.bossbar.object = NULL;
        nOnscreenObjects = 0;
        
        if (statusbar_init()) return 1;                                 // reset his displayed health value
        InitPlayer();
        initmap();
        
        game.stageboss.SetType(stages[game.curmap].bossNo);
        game.stageboss.OnMapEntry();
        
        map_scroll_jump(player->CenterX(), player->CenterY());
        
        if (game.switchstage.eventonentry)
        {
                // this prevents a glitch otherwise caused by entry script to Last Cave.
                // i.e. the script immediately <PRI's then fades in while the game is still
                // frozen, thus the player code never has a chance to set the initial frame.
                PHandleAttributes();
                PSelectFrame();
                
                stat("-- Starting on-entry script %d", game.switchstage.eventonentry);
                StartScript(game.switchstage.eventonentry);
                game.switchstage.eventonentry = 0;
        }
        
        return 0;
}

bool Game::createplayer()
{
        if (player)
        {
                staterr("game.createplayer: player already exists!");
                return 1;
        }
        
        player = (Player *)CreateObject(0, 0, OBJ_PLAYER);
        PInitFirstTime();
        
        return 0;
}


void Game::close(void)
{
        // call any onexit/cleanup function for the current mode
        setmode(GM_NONE);
        
        Objects::DestroyAll(true);      // destroy all objects and player
        FloatText::DeleteAll();
}

/*
void c------------------------------() {}
*/

bool Game::setmode(int newmode, int param, bool force)
{
        if (newmode == 0)
                newmode = GM_NORMAL;
        
        if (game.mode == newmode && !force)
                return 0;
        
        stat("Setting tick function to type %d param %d", newmode, param);
        
        if (tickfunctions[game.mode].OnExit)
                tickfunctions[game.mode].OnExit();
        
        game.mode = newmode;
        
        if (tickfunctions[game.mode].OnEnter)
        {
                if (tickfunctions[game.mode].OnEnter(param))
                {
                        staterr("game.setmode: initilization failed for mode %d", newmode);
                        game.mode = GM_NONE;
                        return 1;
                }
        }
        
        return 0;
}

bool Game::pause(int pausemode, int param)
{
        if (game.paused == pausemode)
                return 0;
        
        stat("Setting pause: type %d param %d", pausemode, param);
        
        if (tickfunctions[game.paused].OnExit)
                tickfunctions[game.paused].OnExit();
        
        game.paused = pausemode;
        
        if (tickfunctions[game.paused].OnEnter)
        {
                if (tickfunctions[game.paused].OnEnter(param))
                {
                        staterr("game.pause: initilization failed for mode %d", pausemode);
                        game.paused = 0;
                        return 1;
                }
        }
        
        if (!game.paused)
                memset(inputs, 0, sizeof(inputs));
        
        return 0;
}

void Game::tick(void)
{
        debug_clear();
        
        if (game.paused)
        {
                tickfunctions[game.paused].OnTick();
        }
        else
        {
                // record/playback replays
                Replay::run();
                
                // run scripts
                RunScripts();
                
                // call the tick function for the current game mode
                tickfunctions[game.mode].OnTick();
        }
        
        DrawDebug();
        console.Draw();
}


void Game::switchmap(int mapno, int scriptno, int px, int py)
{
        game.switchstage.mapno = mapno;
        game.switchstage.playerx = px;
        game.switchstage.playery = py;
        game.switchstage.eventonentry = scriptno;
}


void Game::reset()
{
        memset(inputs, 0, sizeof(inputs));
        StopLoopSounds();
        StopScripts();
        
        Replay::end_record();
        Replay::end_playback();
        
        game.pause(false);
        game.setmode(GM_INTRO, 0, true);
        console.SetVisible(false);
}

/*
void c------------------------------() {}
*/

// standard in-game tick (as opposed to title-screen, inventory etc)
void game_tick_normal(void)
{
Object *o;

        player->riding = NULL;
        player->bopped_object = NULL;
        Objects::UpdateBlockStates();

        if (!game.frozen)
        {
                // run AI for player and stageboss first
                HandlePlayer();
                game.stageboss.Run();
                
                // now objects AI and move all objects to their new positions
                Objects::RunAI();
                Objects::PhysicsSim();
                
                // run the "aftermove" AI routines
                HandlePlayer_am();
                game.stageboss.RunAftermove();
                
                FOREACH_OBJECT(o)
                {
                        if (!o->deleted)
                                o->OnAftermove();
                }
        }

        // important to put this before and not after DrawScene(), or non-existant objects
        // can wind up in the onscreen_objects[] array, and blow up the program on the next tick.
        Objects::CullDeleted();
        
        map_scroll_do();
        
        DrawScene();
        DrawStatusBar();
        fade.Draw();
        
        niku_run();
        if (player->equipmask & EQUIP_NIKUMARU)
                niku_draw(game.counter);
        
        textbox.Draw();
        
        ScreenEffects::Draw();
        map_draw_map_name();    // stage name overlay as on entry
}


// shake screen.
void quake(int quaketime, int snd)
{
        if (game.quaketime < quaketime)
                game.quaketime = quaketime;
        
        if (snd)
                sound((snd != -1) ? snd : SND_QUAKE);
}

// during Ballos fight, since there's already a perpetual quake,
// we need to be able to make an even BIGGER quake effect.
void megaquake(int quaketime, int snd)
{
        if (game.megaquaketime < quaketime)
        {
                game.megaquaketime = quaketime;
                if (game.quaketime < game.megaquaketime)
                        game.quaketime = game.megaquaketime;
        }
        
        if (snd)
                sound((snd != -1) ? snd : SND_QUAKE);
}


void DrawScene(void)
{
int scr_x, scr_y;
extern int flipacceltime;
        
        // sporidically-used animated tile feature,
        // e.g. water currents in Waterway
        if (map.nmotiontiles)
                AnimateMotionTiles();
        
        // draw background map tiles
        if (!flipacceltime)
        {
                map_draw_backdrop();
                map_draw(false);
        }
        
        // draw all objects following their z-order
        nOnscreenObjects = 0;
        
        for(Object *o = lowestobject;
                o != NULL;
                o = o->higher)
        {
                if (o == player) continue;      // player drawn specially in DrawPlayer
                
                // keep it's floattext linked with it's position
                o->DamageText->UpdatePos(o);
                
                // shake enemies that were just hit. when they stop shaking,
                // start rising up how many damage they took.
                if (o->shaketime)
                {
                        o->display_xoff = (o->shaketime & 2) ? 1 : -1;
                        if (!--o->shaketime) o->display_xoff = 0;
                }
                else if (o->DamageWaiting > 0)
                {
                        o->DamageText->AddQty(o->DamageWaiting);
                        o->DamageWaiting = 0;
                }
                
                // get object's onscreen position
                scr_x = (o->x >> CSF) - (map.displayed_xscroll >> CSF);
                scr_y = (o->y >> CSF) - (map.displayed_yscroll >> CSF);
                scr_x -= sprites[o->sprite].frame[o->frame].dir[o->dir].drawpoint.x;
                scr_y -= sprites[o->sprite].frame[o->frame].dir[o->dir].drawpoint.y;
                
                // don't draw objects that are completely offscreen
                // (+26 so floattext won't suddenly disappear on object near bottom of screen)
                if (scr_x <= SCREEN_WIDTH && scr_y <= SCREEN_HEIGHT+26 && \
                        scr_x >= -sprites[o->sprite].w && scr_y >= -sprites[o->sprite].h)
                {
                        if (nOnscreenObjects < MAX_OBJECTS-1)
                        {
                                onscreen_objects[nOnscreenObjects++] = o;
                                o->onscreen = true;
                        }
                        else
                        {
                                staterr("%s:%d: Max Objects Overflow", __FILE__, __LINE__);
                                return;
                        }
                        
                        if (!o->invisible && o->sprite != SPR_NULL)
                        {
                                scr_x += o->display_xoff;
                                
                                if (o->clip_enable)
                                {
                                        draw_sprite_clipped(scr_x, scr_y, o->sprite, o->frame, o->dir, o->clipx1, o->clipx2, o->clipy1, o->clipy2);
                                }
                                else
                                {
                                        draw_sprite(scr_x, scr_y, o->sprite, o->frame, o->dir);
                                }
                        }
                }
                else
                {
                        o->onscreen = false;
                }
        }
        
        // draw the player
        DrawPlayer();
        
        // draw foreground map tiles
        if (!flipacceltime)
                map_draw(TA_FOREGROUND);
        
        // draw carets (always-on-top effects such as boomflash)
        Carets::DrawAll();
        
        // draw rising/falling water in maps like Almond
        map_drawwaterlevel();
        
        // draw all floattext (rising damage and XP amounts)
        FloatText::DrawAll();
        
        if (game.debug.DrawBoundingBoxes) DrawBoundingBoxes();
        //if (game.debug.debugmode) DrawAttrPoints();
}

/*
void c------------------------------() {}
*/

bool game_load(int num)
{
Profile p;

        stat("game_load: loading savefile %d", num);
        
        if (profile_load(GetProfileName(num), &p))
                return 1;
        
        return game_load(&p);
}

bool game_load(Profile *p)
{
int i;

        player->hp = p->hp;
        player->maxHealth = p->maxhp;
        
        player->whimstar.nstars = p->num_whimstars;
        player->equipmask = p->equipmask;
        
        // load weapons
        for(i=0;i<WPN_COUNT;i++)
        {
                player->weapons[i].hasWeapon = p->weapons[i].hasWeapon;
                player->weapons[i].level = p->weapons[i].level;
                player->weapons[i].xp = p->weapons[i].xp;
                player->weapons[i].ammo = p->weapons[i].ammo;
                player->weapons[i].maxammo = p->weapons[i].maxammo;
        }
        
        player->curWeapon = p->curWeapon;
        
        // load inventory
        memcpy(player->inventory, p->inventory, sizeof(player->inventory));
        player->ninventory = p->ninventory;
        
        // load flags
        memcpy(game.flags, p->flags, sizeof(game.flags));
        
        // load teleporter slots
        textbox.StageSelect.ClearSlots();
        for(i=0;i<p->num_teleslots;i++)
        {
                int slotno = p->teleslots[i].slotno;
                int scriptno = p->teleslots[i].scriptno;
                
                textbox.StageSelect.SetSlot(slotno, scriptno);
                stat(" - Read Teleporter Slot %d: slotno=%d scriptno=%d", i, slotno, scriptno);
        }
        
        // have to load the stage last AFTER the flags are loaded because
        // of the options to appear and disappear objects based on flags.
        if (load_stage(p->stage)) return 1;
        music(p->songno);
        
        player->x = p->px;
        player->y = p->py;
        player->dir = p->pdir;
        player->hide = false;
        game.showmapnametime = 0;
        
        return 0;
}


bool game_save(int num)
{
Profile p;

        stat("game_save: writing savefile %d", num);
        
        if (game_save(&p))
                return 1;
        
        if (profile_save(GetProfileName(num), &p))
                return 1;
        
        return 0;
}

bool game_save(Profile *p)
{
int i;

        memset(p, 0, sizeof(Profile));
        
        p->stage = game.curmap;
        p->songno = music_cursong();
        
        p->px = player->x;
        p->py = player->y;
        p->pdir = player->dir;
        
        p->hp = player->hp;
        p->maxhp = player->maxHealth;
        
        p->num_whimstars = player->whimstar.nstars;
        p->equipmask = player->equipmask;
        
        // save weapons
        p->curWeapon = player->curWeapon;
        
        for(i=0;i<WPN_COUNT;i++)
        {
                p->weapons[i].hasWeapon = player->weapons[i].hasWeapon;
                p->weapons[i].level = player->weapons[i].level;
                p->weapons[i].xp = player->weapons[i].xp;
                p->weapons[i].ammo = player->weapons[i].ammo;
                p->weapons[i].maxammo = player->weapons[i].maxammo;
        }
        
        // save inventory
        p->ninventory = player->ninventory;
        memcpy(p->inventory, player->inventory, sizeof(p->inventory));
        
        // save flags
        memcpy(p->flags, game.flags, sizeof(p->flags));
        
        // save teleporter slots
        for(i=0;i<NUM_TELEPORTER_SLOTS;i++)
        {
                int slotno, scriptno;
                if (!textbox.StageSelect.GetSlotByIndex(i, &slotno, &scriptno))
                {
                        p->teleslots[p->num_teleslots].slotno = slotno;
                        p->teleslots[p->num_teleslots].scriptno = scriptno;
                        p->num_teleslots++;
                }
        }
        
        return 0;
}

/*
void c------------------------------() {}
*/

// assign sprites for the objects that didn't get covered by the
// auto-generated spritesetup->cpp, and set some properties on the objects.
// This is mostly for objects where the sprite is not named the same as
// the object it is assigned to.
void AssignExtraSprites(void)
{
        objprop[OBJ_PLAYER].sprite = SPR_MYCHAR;
        objprop[OBJ_NPC_PLAYER].sprite = SPR_MYCHAR;
        objprop[OBJ_PTELIN].sprite = SPR_MYCHAR;
        objprop[OBJ_PTELOUT].sprite = SPR_MYCHAR;
        
        objprop[OBJ_NULL].sprite = SPR_NULL;
        objprop[OBJ_HVTRIGGER].sprite = SPR_NULL;
        objprop[OBJ_BUBBLE_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_DROPLET_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_HEY_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_WATERLEVEL].sprite = SPR_NULL;
        objprop[OBJ_LAVA_DRIP_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_RED_BAT_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_SCROLL_CONTROLLER].sprite = SPR_NULL;
        objprop[OBJ_DOCTOR_GHOST].sprite = SPR_NULL;
        objprop[OBJ_FALLING_BLOCK].sprite = SPR_NULL;   // set at runtime based on current map
        objprop[OBJ_FALLING_BLOCK_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_QUAKE].sprite = SPR_NULL;
        objprop[OBJ_BUTE_SPAWNER].sprite = SPR_NULL;
        objprop[OBJ_SMOKE_DROPPER].sprite = SPR_NULL;


        objprop[OBJ_BUTE_ARROW].sprite = SPR_BUTE_ARROW_LEFT;   // so spawn point is applied
        
        objprop[OBJ_POLISHBABY].defaultnxflags |= NXFLAG_SLOW_WHEN_HURT;
        
        objprop[OBJ_MIMIGAC1].sprite = SPR_MIMIGAC;
        objprop[OBJ_MIMIGAC2].sprite = SPR_MIMIGAC;
        objprop[OBJ_MIMIGAC_ENEMY].sprite = SPR_MIMIGAC;
        objprop[OBJ_MIMIGAC_ENEMY].shaketime = 0;
        
        objprop[OBJ_MISERY_FLOAT].sprite = SPR_MISERY;
        objprop[OBJ_MISERY_FLOAT].damage = 1;
        objprop[OBJ_MISERY_STAND].sprite = SPR_MISERY;
        
        objprop[OBJ_PUPPY_WAG].sprite = SPR_PUPPY;
        objprop[OBJ_PUPPY_BARK].sprite = SPR_PUPPY;
        objprop[OBJ_PUPPY_CARRY].sprite = SPR_PUPPY;
        objprop[OBJ_PUPPY_SLEEP].sprite = SPR_PUPPY_ASLEEP;
        objprop[OBJ_PUPPY_RUN].sprite = SPR_PUPPY;
        objprop[OBJ_PUPPY_ITEMS].sprite = SPR_PUPPY;
        
        objprop[OBJ_BALROG_DROP_IN].sprite = SPR_BALROG;
        objprop[OBJ_BALROG_BUST_IN].sprite = SPR_BALROG;
        
        objprop[OBJ_CROWWITHSKULL].sprite = SPR_CROW;
        objprop[OBJ_ARMADILLO].defaultnxflags |= (NXFLAG_FOLLOW_SLOPE | NXFLAG_SLOW_WHEN_HURT);
        objprop[OBJ_SKULLHEAD_CARRIED].sprite = SPR_SKULLHEAD;
        
        objprop[OBJ_TOROKO].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        objprop[OBJ_TOROKO_TELEPORT_IN].sprite = SPR_TOROKO;
        
        objprop[OBJ_KING].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        
        objprop[OBJ_FAN_DROPLET].sprite = SPR_WATER_DROPLET;
        
        objprop[OBJ_MGUN_TRAIL].defaultflags |= FLAG_IGNORE_SOLID;
        
        objprop[OBJ_BLOCK_MOVEH].sprite = SPR_MOVING_BLOCK;
        objprop[OBJ_BLOCK_MOVEV].sprite = SPR_MOVING_BLOCK;
        
        objprop[OBJ_IRONH].shaketime = 8;
        
        objprop[OBJ_OMEGA_BODY].shaketime = 0;          // omega handles his own shaketime
        objprop[OBJ_OMEGA_BODY].hurt_sound = SND_ENEMY_HURT_BIG;
        
        objprop[OBJ_OMEGA_LEG].sprite = SPR_OMG_LEG_INAIR;
        objprop[OBJ_OMEGA_STRUT].sprite = SPR_OMG_STRUT;
        
        objprop[OBJ_OMEGA_SHOT].death_smoke_amt = 4;
        objprop[OBJ_OMEGA_SHOT].death_sound = SND_EXPL_SMALL;
        objprop[OBJ_OMEGA_SHOT].initial_hp = 1;
        objprop[OBJ_OMEGA_SHOT].xponkill = 1;
        
        objprop[OBJ_BAT_HANG].sprite = SPR_BAT;
        objprop[OBJ_BAT_CIRCLE].sprite = SPR_BAT;
        
        objprop[OBJ_FIREBALL1].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        objprop[OBJ_FIREBALL23].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        
        objprop[OBJ_CURLY_AI].sprite = SPR_CURLY;
        objprop[OBJ_CURLY_AI].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        
        objprop[OBJ_CURLY].defaultnxflags |= NXFLAG_FOLLOW_SLOPE;
        
        objprop[OBJ_MINICORE].hurt_sound = SND_ENEMY_HURT_COOL;
        objprop[OBJ_CORE_CONTROLLER].hurt_sound = SND_CORE_HURT;
        
        objprop[OBJ_CURLY_CARRIED].sprite = SPR_CURLY;
        
        objprop[OBJ_BALROG_BOSS_RUNNING].sprite = SPR_BALROG;
        objprop[OBJ_BALROG_BOSS_FLYING].sprite = SPR_BALROG;
        objprop[OBJ_BALROG_BOSS_MISSILES].sprite = SPR_BALROG;
        
        objprop[OBJ_XP].sprite = SPR_XP_SMALL;
        
        objprop[OBJ_NPC_IGOR].sprite = SPR_IGOR;
        objprop[OBJ_BOSS_IGOR].sprite = SPR_IGOR;
        objprop[OBJ_BOSS_IGOR_DEFEATED].sprite = SPR_IGOR;
        objprop[OBJ_IGOR_BALCONY].sprite = SPR_IGOR;
        
        objprop[OBJ_X_TARGET].hurt_sound = SND_ENEMY_HURT_COOL;
        objprop[OBJ_X_INTERNALS].shaketime = 9;
        objprop[OBJ_X_MAINOBJECT].xponkill = 1;
        
        objprop[OBJ_POOH_BLACK_BUBBLE].xponkill = 0;
        objprop[OBJ_POOH_BLACK_DYING].sprite = SPR_POOH_BLACK;
        
        objprop[OBJ_BOOSTER_FALLING].sprite = SPR_PROFESSOR_BOOSTER;
        
        objprop[OBJ_MIMIGA_FARMER_STANDING].sprite = SPR_MIMIGA_FARMER;
        objprop[OBJ_MIMIGA_FARMER_WALKING].sprite = SPR_MIMIGA_FARMER;
        objprop[OBJ_DROLL_GUARD].sprite = SPR_DROLL;
        
        objprop[OBJ_MA_PIGNON_CLONE].sprite = SPR_MA_PIGNON;
        
        objprop[OBJ_DOCTOR_SHOT_TRAIL].sprite = SPR_DOCTOR_SHOT;
        
        // they're still able to detect when they touch floor; etc,
        // but we don't want say a falling one to get blocked by the ceiling.
        objprop[OBJ_RED_ENERGY].defaultflags |= FLAG_IGNORE_SOLID;
        
        objprop[OBJ_SUE_TELEPORT_IN].sprite = SPR_SUE;
        
        objprop[OBJ_MISERY_BAT].sprite = SPR_ORANGE_BAT_FINAL;
        objprop[OBJ_UD_MINICORE_IDLE].sprite = SPR_UD_MINICORE;
        
        objprop[OBJ_WHIMSICAL_STAR].sprite = SPR_WHIMSICAL_STAR;        // for bbox only, object is invisible
        
        // these are set by AI; this is just to silence unimplemented object warnings
        #ifdef DEBUG
        objprop[OBJ_CRITTER_FLYING].sprite = SPR_CRITTER_FLYING_CYAN;
        for(int i=OBJ_SHOTS_START;i<=OBJ_SHOTS_END;i++)
                if (objprop[i].sprite==SPR_UNIMPLEMENTED_OBJECT) objprop[i].sprite = SPR_NULL;
        #endif
}