/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on original Hugo 1-3 Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#include "common/system.h"
#include "common/random.h"
#include "common/EventRecorder.h"
#include "hugo/game.h"
#include "hugo/hugo.h"
#include "hugo/engine.h"
#include "hugo/global.h"
#include "hugo/file.h"
#include "hugo/schedule.h"
#include "hugo/display.h"
#include "hugo/parser.h"
#include "hugo/route.h"
#include "hugo/util.h"
#include "hugo/sound.h"
namespace Hugo {
#define EDGE 10 // Closest object can get to edge of screen
#define EDGE2 (EDGE * 2) // Push object further back on edge collision
#define SHIFT 8 // Place hero this far inside bounding box
#define MAX_OBJECTS 128 // Used in Update_images()
#define BOUND(X, Y) ((_boundary[Y * XBYTES + X / 8] & (0x80 >> X % 8)) != 0) // Boundary bit set
config_t _config; // User's config
maze_t _maze = {false, 0, 0, 0, 0, 0, 0, 0, 0}; // Default to not in maze
hugo_boot_t _boot; // Boot info structure file
char _textBoxBuffer[MAX_BOX]; // Buffer for text box
command_t _line = ""; // Line of user text input
// Sets the playlist to be the default tune selection
void HugoEngine::initPlaylist(bool playlist[MAX_TUNES]) {
debugC(1, kDebugEngine, "initPlaylist");
for (int16 i = 0; i < MAX_TUNES; i++)
playlist[i] = false;
for (int16 i = 0; _defltTunes[i] != -1; i++)
playlist[_defltTunes[i]] = true;
}
// Initialize the dynamic game status
void HugoEngine::initStatus() {
debugC(1, kDebugEngine, "initStatus");
_status.initSaveFl = false; // Don't force initial save
_status.storyModeFl = false; // Not in story mode
_status.gameOverFl = false; // Hero not knobbled yet
_status.recordFl = false; // Not record mode
_status.playbackFl = false; // Not playback mode
_status.demoFl = false; // Not demo mode
_status.textBoxFl = false; // Not processing a text box
// Strangerke - Not used ?
// _status.mmtime = false; // Multimedia timer support
_status.lookFl = false; // Toolbar "look" button
_status.recallFl = false; // Toolbar "recall" button
_status.leftButtonFl = false; // Left mouse button pressed
_status.rightButtonFl = false; // Right mouse button pressed
_status.newScreenFl = false; // Screen not just loaded
_status.jumpExitFl = false; // Can't jump to a screen exit
_status.godModeFl = false; // No special cheats allowed
_status.helpFl = false; // Not calling WinHelp()
_status.path[0] = 0; // Path to write files
_status.saveSlot = 0; // Slot to save/restore game
_status.screenWidth = 0; // Desktop screen width
// Initialize every start of new game
_status.tick = 0; // Tick count
_status.saveTick = 0; // Time of last save
_status.viewState = V_IDLE; // View state
_status.inventoryState = I_OFF; // Inventory icon bar state
_status.inventoryHeight = 0; // Inventory icon bar pos
_status.inventoryObjId = -1; // Inventory object selected (none)
_status.routeIndex = -1; // Hero not following a route
_status.go_for = GO_SPACE; // Hero walking to space
_status.go_id = -1; // Hero not walking to anything
}
// Initialize default config values. Must be done before Initialize().
// Reset needed to save config.cx,cy which get splatted during OnFileNew()
void HugoEngine::initConfig(inst_t action) {
static int16 cx, cy; // Save window size, pos
int16 i;
debugC(1, kDebugEngine, "initConfig(%d)", action);
switch (action) {
case INSTALL:
_config.musicFl = true; // Music state initially on
_config.soundFl = true; // Sound state initially on
_config.turboFl = false; // Turbo state initially off
_config.backgroundMusicFl = false; // No music when inactive
_config.cx = VIEW_DX * 2; // Window view size
_config.cy = VIEW_DY * 2;
// _config.wx = 0;
// _config.wy = 0;
_config.musicVolume = 85; // Music volume %
_config.soundVolume = 100; // Sound volume %
initPlaylist(_config.playlist); // Initialize default tune playlist
HugoEngine::get().file().readBootFile(); // Read startup structure
HugoEngine::get().file().readConfig(); // Read user's saved config
cx = _config.cx; // Save these around OnFileNew()
cy = _config.cy;
// wx = _config.wx;
// wy = _config.wy;
break;
case RESET:
_config.cx = cx; // Restore cx, cy
_config.cy = cy;
// _config.wx = wx;
// _config.wy = wy;
// Find first tune and play it
for (i = 0; i < MAX_TUNES; i++)
if (_config.playlist[i]) {
sound().playMusic(i);
break;
}
HugoEngine::get().file().initSavedGame(); // Initialize saved game
break;
case RESTORE:
warning("Unhandled action RESTORE");
break;
}
}
void HugoEngine::initialize() {
debugC(1, kDebugEngine, "initialize");
sound().initSound(INSTALL);
HugoEngine::get().scheduler().initEventQueue(); // Init scheduler stuff
screen().initDisplay(); // Create Dibs and palette
HugoEngine::get().file().openDatabaseFiles(); // Open database files
calcMaxScore(); // Initialise maxscore
_rnd = new Common::RandomSource();
g_eventRec.registerRandomSource(*_rnd, "hugo");
_rnd->setSeed(42); // Kick random number generator
switch (getGameType()) {
case kGameTypeHugo1:
_episode = "\"HUGO'S HOUSE OF HORRORS\"";
_picDir = "";
break;
case kGameTypeHugo2:
_episode = "\"Hugo's Mystery Adventure\"";
_picDir = "hugo2/";
break;
case kGameTypeHugo3:
_episode = "\"Hugo's Amazon Adventure\"";
_picDir = "hugo3/";
break;
default:
error("Unknown game");
}
}
// Restore all resources before termination
void HugoEngine::shutdown() {
debugC(1, kDebugEngine, "shutdown");
sound().initSound(RESTORE);
HugoEngine::get().file().closeDatabaseFiles();
if (_status.recordFl || _status.playbackFl)
HugoEngine::get().file().closePlaybackFile();
freeObjects();
}
void HugoEngine::readObjectImages() {
debugC(1, kDebugEngine, "readObjectImages");
for (int i = 0; i < _numObj; i++)
HugoEngine::get().file().readImage(i, &_objects[i]);
}
// Read the uif image file (inventory icons)
void HugoEngine::readUIFImages() {
debugC(1, kDebugEngine, "readUIFImages");
HugoEngine::get().file().readUIFItem(UIF_IMAGES, screen().getGUIBuffer()); // Read all uif images
}
// Read scenery, overlay files for given screen number
void HugoEngine::readScreenFiles(int screenNum) {
debugC(1, kDebugEngine, "readScreenFiles(%d)", screenNum);
HugoEngine::get().file().readBackground(screenNum); // Scenery file
memcpy(screen().getBackBuffer(), screen().getFrontBuffer(), sizeof(screen().getFrontBuffer()));// Make a copy
HugoEngine::get().file().readOverlay(screenNum, _boundary, BOUNDARY); // Boundary file
HugoEngine::get().file().readOverlay(screenNum, _overlay, OVERLAY); // Overlay file
HugoEngine::get().file().readOverlay(screenNum, _ovlBase, OVLBASE); // Overlay base file
}
// Update all object positions. Process object 'local' events
// including boundary events and collisions
void HugoEngine::moveObjects() {
object_t *obj;
seq_t *currImage;
int x1, x2, y1, y2; // object coordinates
int dx, dy; // Allowable motion wrt boundary
int8 radius; // Radius for chase (8 bit signed)
debugC(4, kDebugEngine, "moveObjects");
// If route mode enabled, do special route processing
if (_status.routeIndex >= 0)
route().processRoute();
// Perform any adjustments to velocity based on special path types
// and store all (visible) object baselines into the boundary file.
// Don't store foreground or background objects
for (int i = 0; i < _numObj; i++) {
obj = &_objects[i]; // Get pointer to object
currImage = obj->currImagePtr; // Get ptr to current image
if (obj->screenIndex == *_screen_p) {
switch (obj->pathType) {
case CHASE:
case CHASE2:
radius = obj->radius; // Default to object's radius
if (radius < 0) // If radius infinity, use closer value
radius = DX;
dx = _hero->x + _hero->currImagePtr->x1 - obj->x - currImage->x1;
dy = _hero->y + _hero->currImagePtr->y2 - obj->y - currImage->y2 - 1;
if (abs(dx) <= radius)
obj->vx = 0;
else
obj->vx = (dx > 0) ? MIN(dx, obj->vxPath) : MAX(dx, -obj->vxPath);
if (abs(dy) <= radius)
obj->vy = 0;
else
obj->vy = (dy > 0) ? MIN(dy, obj->vyPath) : MAX(dy, -obj->vyPath);
// Set first image in sequence (if multi-seq object)
switch (obj->seqNumb) {
case 4:
if (!obj->vx) { // Got 4 directions
if (obj->vx != obj->oldvx) { // vx just stopped
if (dy >= 0)
obj->currImagePtr = obj->seqList[DOWN].seqPtr;
else
obj->currImagePtr = obj->seqList[_UP].seqPtr;
}
} else if (obj->vx != obj->oldvx) {
if (dx > 0)
obj->currImagePtr = obj->seqList[RIGHT].seqPtr;
else
obj->currImagePtr = obj->seqList[LEFT].seqPtr;
}
break;
case 3:
case 2:
if (obj->vx != obj->oldvx) { // vx just stopped
if (dx > 0) // Left & right only
obj->currImagePtr = obj->seqList[RIGHT].seqPtr;
else
obj->currImagePtr = obj->seqList[LEFT].seqPtr;
}
break;
}
if (obj->vx || obj->vy)
obj->cycling = CYCLE_FORWARD;
else {
obj->cycling = NOT_CYCLING;
boundaryCollision(obj); // Must have got hero!
}
obj->oldvx = obj->vx;
obj->oldvy = obj->vy;
currImage = obj->currImagePtr; // Get (new) ptr to current image
break;
case WANDER2:
case WANDER:
if (!_rnd->getRandomNumber(3 * NORMAL_TPS)) { // Kick on random interval
obj->vx = _rnd->getRandomNumber(obj->vxPath << 1) - obj->vxPath;
obj->vy = _rnd->getRandomNumber(obj->vyPath << 1) - obj->vyPath;
// Set first image in sequence (if multi-seq object)
if (obj->seqNumb > 1) {
if (!obj->vx && (obj->seqNumb >= 4)) {
if (obj->vx != obj->oldvx) { // vx just stopped
if (obj->vy > 0)
obj->currImagePtr = obj->seqList[DOWN].seqPtr;
else
obj->currImagePtr = obj->seqList[_UP].seqPtr;
}
} else if (obj->vx != obj->oldvx) {
if (obj->vx > 0)
obj->currImagePtr = obj->seqList[RIGHT].seqPtr;
else
obj->currImagePtr = obj->seqList[LEFT].seqPtr;
}
}
obj->oldvx = obj->vx;
obj->oldvy = obj->vy;
currImage = obj->currImagePtr; // Get (new) ptr to current image
}
if (obj->vx || obj->vy)
obj->cycling = CYCLE_FORWARD;
break;
default:
; // Really, nothing
}
// Store boundaries
if ((obj->cycling > ALMOST_INVISIBLE) && (obj->priority == FLOATING))
storeBoundary(obj->x + currImage->x1, obj->x + currImage->x2, obj->y + currImage->y2);
}
}
// Move objects, allowing for boundaries
for (int i = 0; i < _numObj; i++) {
obj = &_objects[i]; // Get pointer to object
if ((obj->screenIndex == *_screen_p) && (obj->vx || obj->vy)) {
// Only process if it's moving
// Do object movement. Delta_x,y return allowed movement in x,y
// to move as close to a boundary as possible without crossing it.
currImage = obj->currImagePtr; // Get ptr to current image
x1 = obj->x + currImage->x1; // Left edge of object
x2 = obj->x + currImage->x2; // Right edge
y1 = obj->y + currImage->y1; // Top edge
y2 = obj->y + currImage->y2; // Bottom edge
if ((obj->cycling > ALMOST_INVISIBLE) && (obj->priority == FLOATING))
clearBoundary(x1, x2, y2); // Clear our own boundary
dx = deltaX(x1, x2, obj->vx, y2);
if (dx != obj->vx) {
// An object boundary collision!
boundaryCollision(obj);
obj->vx = 0;
}
dy = deltaY(x1, x2, obj->vy, y2);
if (dy != obj->vy) {
// An object boundary collision!
boundaryCollision(obj);
obj->vy = 0;
}
if ((obj->cycling > ALMOST_INVISIBLE) && (obj->priority == FLOATING))
storeBoundary(x1, x2, y2); // Re-store our own boundary
obj->x += dx; // Update object position
obj->y += dy;
// Don't let object go outside screen
if (x1 < EDGE)
obj->x = EDGE2;
if (x2 > (XPIX - EDGE))
obj->x = XPIX - EDGE2 - (x2 - x1);
if (y1 < EDGE)
obj->y = EDGE2;
if (y2 > (YPIX - EDGE))
obj->y = YPIX - EDGE2 - (y2 - y1);
if ((obj->vx == 0) && (obj->vy == 0) && (obj->pathType != WANDER2) && (obj->pathType != CHASE2))
obj->cycling = NOT_CYCLING;
}
}
// Clear all object baselines from the boundary file.
for (int i = 0; i < _numObj; i++) {
obj = &_objects[i]; // Get pointer to object
currImage = obj->currImagePtr; // Get ptr to current image
if ((obj->screenIndex == *_screen_p) && (obj->cycling > ALMOST_INVISIBLE) && (obj->priority == FLOATING))
clearBoundary(obj->oldx + currImage->x1, obj->oldx + currImage->x2, obj->oldy + currImage->y2);
}
// If maze mode is enabled, do special maze processing
if (_maze.enabledFl)
processMaze();
}
// Return maximum allowed movement (from zero to vx) such that object does
// not cross a boundary (either background or another object)
int HugoEngine::deltaX(int x1, int x2, int vx, int y) {
// Explanation of algorithm: The boundaries are drawn as contiguous
// lines 1 pixel wide. Since DX,DY are not necessarily 1, we must
// detect boundary crossing. If vx positive, examine each pixel from
// x1 old to x2 new, else x2 old to x1 new, both at the y2 line.
// If vx zero, no need to check. If vy non-zero then examine each
// pixel on the line segment x1 to x2 from y old to y new.
// Fix from Hugo I v1.5:
// Note the diff is munged in the return statement to cater for a special
// cases arising from differences in image widths from one sequence to
// another. The problem occurs reversing direction at a wall where the
// new image intersects before the object can move away. This is cured
// by comparing the intersection with half the object width pos. If the
// intersection is in the other half wrt the intended direction, use the
// desired vx, else use the computed delta. i.e. believe the desired vx
int b;
debugC(3, kDebugEngine, "deltaX(%d, %d, %d, %d)", x1, x2, vx, y);
if (vx == 0)
return(0); // Object stationary
y *= XBYTES; // Offset into boundary file
if (vx > 0) {
// Moving to right
for (int i = x1 >> 3; i <= (x2 + vx) >> 3; i++) // Search by byte
if ((b = Utils::firstBit((byte)(_boundary[y + i] | _objBound[y + i]))) < 8) { // b is index or 8
// Compute x of boundary and test if intersection
b += i << 3;
if ((b >= x1) && (b <= x2 + vx))
return((b < x1 + ((x2 - x1) >> 1)) ? vx : b - x2 - 1); // return dx
}
} else {
// Moving to left
for (int i = x2 >> 3; i >= (x1 + vx) >> 3; i--)// Search by byte
if ((b = Utils::lastBit((byte)(_boundary[y + i] | _objBound[y + i]))) < 8) { // b is index or 8
// Compute x of boundary and test if intersection
b += i << 3;
if ((b >= x1 + vx) && (b <= x2))
return((b > x1 + ((x2 - x1) >> 1)) ? vx : b - x1 + 1); // return dx
}
}
return(vx);
}
// Similar to Delta_x, but for movement in y direction. Special case of
// bytes at end of line segment; must only count boundary bits falling on
// line segment.
int HugoEngine::deltaY(int x1, int x2, int vy, int y) {
int inc, i, j, b;
debugC(3, kDebugEngine, "deltaY(%d, %d, %d, %d)", x1, x2, vy, y);
if (vy == 0)
return(0); // Object stationary
inc = (vy > 0) ? 1 : -1;
for (j = y + inc; j != (y + vy + inc); j += inc) //Search by byte
for (i = x1 >> 3; i <= x2 >> 3; i++)
if ((b = _boundary[j * XBYTES + i] | _objBound[j * XBYTES + i]) != 0) { // Any bit set
// Make sure boundary bits fall on line segment
if (i == (x2 >> 3)) // Adjust right end
b &= 0xff << ((i << 3) + 7 - x2);
else if (i == (x1 >> 3)) // Adjust left end
b &= 0xff >> (x1 - (i << 3));
if (b)
return(j - y - inc);
}
return(vy);
}
// Store a horizontal line segment in the object boundary file
void HugoEngine::storeBoundary(int x1, int x2, int y) {
byte *b; // ptr to boundary byte
debugC(5, kDebugEngine, "storeBoundary(%d, %d, %d)", x1, x2, y);
for (int i = x1 >> 3; i <= x2 >> 3; i++) { // For each byte in line
b = &_objBound[y * XBYTES + i]; // get boundary byte
if (i == x2 >> 3) // Adjust right end
*b |= 0xff << ((i << 3) + 7 - x2);
else if (i == x1 >> 3) // Adjust left end
*b |= 0xff >> (x1 - (i << 3));
else
*b = 0xff;
}
}
// Clear a horizontal line segment in the object boundary file
void HugoEngine::clearBoundary(int x1, int x2, int y) {
int i;
byte *b; // ptr to boundary byte
debugC(5, kDebugEngine, "clearBoundary(%d, %d, %d)", x1, x2, y);
for (i = x1 >> 3; i <= x2 >> 3; i++) { // For each byte in line
b = &_objBound[y * XBYTES + i]; // get boundary byte
if (i == x2 >> 3) // Adjust right end
*b &= ~(0xff << ((i << 3) + 7 - x2));
else if (i == x1 >> 3) // Adjust left end
*b &= ~(0xff >> (x1 - (i << 3)));
else
*b = 0;
}
}
// Maze mode is enabled. Check to see whether hero has crossed the maze
// bounding box, if so, go to the next room */
void HugoEngine::processMaze() {
seq_t *currImage;
int x1, x2, y1, y2; // hero coordinates
debugC(1, kDebugEngine, "processMaze");
//actlist alnewscr = {&aheroxy,&astophero,&aherostop,&anewscr,NULL};
//actlist_pt alist = &alnewscr[0];
currImage = _hero->currImagePtr; // Get ptr to current image
x1 = _hero->x + currImage->x1; // Left edge of object
x2 = _hero->x + currImage->x2; // Right edge
y1 = _hero->y + currImage->y1; // Top edge
y2 = _hero->y + currImage->y2; // Bottom edge
if (x1 < _maze.x1) {
// Exit west
// anewscr.screen = *_screen_p - 1;
_actListArr[_alNewscrIndex][3].a8.screenIndex = *_screen_p - 1;
// aheroxy.x = _maze.x2 - SHIFT - (x2 - x1);
_actListArr[_alNewscrIndex][0].a2.x = _maze.x2 - SHIFT - (x2 - x1);
// aheroxy.y = _hero_p->y;
_actListArr[_alNewscrIndex][0].a2.y = _hero->y;
_status.routeIndex = -1;
HugoEngine::get().scheduler().insertActionList(_alNewscrIndex);
} else if (x2 > _maze.x2) {
// Exit east
// anewscr.screen = *_screen_p + 1;
_actListArr[_alNewscrIndex][3].a8.screenIndex = *_screen_p + 1;
// aheroxy.x = _maze.x1 + SHIFT;
_actListArr[_alNewscrIndex][0].a2.x = _maze.x1 + SHIFT;
// aheroxy.y = _hero_p->y;
_actListArr[_alNewscrIndex][0].a2.y = _hero->y;
_status.routeIndex = -1;
HugoEngine::get().scheduler().insertActionList(_alNewscrIndex);
} else if (y1 < _maze.y1 - SHIFT) {
// Exit north
// anewscr.screen = *_screen_p - _maze.size;
_actListArr[_alNewscrIndex][3].a8.screenIndex = *_screen_p - _maze.size;
// aheroxy.x = _maze.x3; // special offset for perspective
_actListArr[_alNewscrIndex][0].a2.x = _maze.x3;
// aheroxy.y = _maze.y2 - SHIFT - (y2 - y1);
_actListArr[_alNewscrIndex][0].a2.y = _maze.y2 - SHIFT - (y2 - y1);
_status.routeIndex = -1;
HugoEngine::get().scheduler().insertActionList(_alNewscrIndex);
} else if (y2 > _maze.y2 - SHIFT / 2) {
// Exit south
// anewscr.screen = *_screen_p + _maze.size;
_actListArr[_alNewscrIndex][3].a8.screenIndex = *_screen_p + _maze.size;
// aheroxy.x = _maze.x4; // special offset for perspective
_actListArr[_alNewscrIndex][0].a2.x = _maze.x4;
// aheroxy.y = _maze.y1 + SHIFT;
_actListArr[_alNewscrIndex][0].a2.y = _maze.y1 + SHIFT;
_status.routeIndex = -1;
HugoEngine::get().scheduler().insertActionList(_alNewscrIndex);
}
}
// Compare function for the quicksort. The sort is to order the objects in
// increasing vertical position, using y+y2 as the baseline
// Returns -1 if ay2 < by2 else 1 if ay2 > by2 else 0
int y2comp(const void *a, const void *b) {
int ay2, by2;
debugC(6, kDebugEngine, "y2comp");
const object_t *p1 = &HugoEngine::get()._objects[*(const byte *)a];
const object_t *p2 = &HugoEngine::get()._objects[*(const byte *)b];
if (p1 == p2)
// Why does qsort try the same indexes?
return (0);
if (p1->priority == BACKGROUND)
return (-1);
if (p2->priority == BACKGROUND)
return (1);
if (p1->priority == FOREGROUND)
return (1);
if (p2->priority == FOREGROUND)
return (-1);
ay2 = p1->y + p1->currImagePtr->y2;
by2 = p2->y + p2->currImagePtr->y2;
return(ay2 - by2);
}
// Draw all objects on screen as follows:
// 1. Sort 'FLOATING' objects in order of y2 (base of object)
// 2. Display new object frames/positions in dib
// Finally, cycle any animating objects to next frame
void HugoEngine::updateImages() {
int i, j, num_objs;
object_t *obj; // Pointer to object
seq_t *seqPtr; // Save curr_seq_p
byte objindex[MAX_OBJECTS]; // Array of indeces to objects
debugC(5, kDebugEngine, "updateImages");
// Initialise the index array to visible objects in current screen
for (i = 0, num_objs = 0; i < _numObj; i++) {
obj = &_objects[i];
if ((obj->screenIndex == *_screen_p) && (obj->cycling >= ALMOST_INVISIBLE))
objindex[num_objs++] = i;
}
// Sort the objects into increasing y+y2 (painter's algorithm)
qsort(objindex, num_objs, sizeof(objindex[0]), y2comp);
// Add each visible object to display list
for (i = 0; i < num_objs; i++) {
obj = &_objects[objindex[i]];
// Count down inter-frame timer
if (obj->frameTimer)
obj->frameTimer--;
if (obj->cycling > ALMOST_INVISIBLE) // Only if visible
switch (obj->cycling) {
case NOT_CYCLING:
screen().displayFrame(obj->x, obj->y, obj->currImagePtr, obj->priority == OVEROVL);
break;
case CYCLE_FORWARD:
if (obj->frameTimer) // Not time to see next frame yet
screen().displayFrame(obj->x, obj->y, obj->currImagePtr, obj->priority == OVEROVL);
else
screen().displayFrame(obj->x, obj->y, obj->currImagePtr->nextSeqPtr, obj->priority == OVEROVL);
break;
case CYCLE_BACKWARD:
seqPtr = obj->currImagePtr;
if (!obj->frameTimer) // Show next frame
while (seqPtr->nextSeqPtr != obj->currImagePtr)
seqPtr = seqPtr->nextSeqPtr;
screen().displayFrame(obj->x, obj->y, seqPtr, obj->priority == OVEROVL);
break;
default:
break;
}
}
// Cycle any animating objects
for (i = 0; i < num_objs; i++) {
obj = &_objects[objindex[i]];
if (obj->cycling != INVISIBLE) {
// Only if it's visible
if (obj->cycling == ALMOST_INVISIBLE)
obj->cycling = INVISIBLE;
// Now Rotate to next picture in sequence
switch (obj->cycling) {
case NOT_CYCLING:
break;
case CYCLE_FORWARD:
if (!obj->frameTimer) {
// Time to step to next frame
obj->currImagePtr = obj->currImagePtr->nextSeqPtr;
// Find out if this is last frame of sequence
// If so, reset frame_timer and decrement n_cycle
if (obj->frameInterval || obj->cycleNumb) {
obj->frameTimer = obj->frameInterval;
for (j = 0; j < obj->seqNumb; j++)
if (obj->currImagePtr->nextSeqPtr == obj->seqList[j].seqPtr)
if (obj->cycleNumb) // Decr cycleNumb if Non-continous
if (!--obj->cycleNumb)
obj->cycling = NOT_CYCLING;
}
}
break;
case CYCLE_BACKWARD:
if (!obj->frameTimer) {
// Time to step to prev frame
seqPtr = obj->currImagePtr;
while (obj->currImagePtr->nextSeqPtr != seqPtr)
obj->currImagePtr = obj->currImagePtr->nextSeqPtr;
// Find out if this is first frame of sequence
// If so, reset frame_timer and decrement n_cycle
if (obj->frameInterval || obj->cycleNumb) {
obj->frameTimer = obj->frameInterval;
for (j = 0; j < obj->seqNumb; j++)
if (obj->currImagePtr == obj->seqList[j].seqPtr)
if (obj->cycleNumb) // Decr cycleNumb if Non-continous
if (!--obj->cycleNumb)
obj->cycling = NOT_CYCLING;
}
}
break;
default:
break;
}
obj->oldx = obj->x;
obj->oldy = obj->y;
}
}
}
// Return object index of the topmost object under the cursor, or -1 if none
// Objects are filtered if not "useful"
int16 HugoEngine::findObject(uint16 x, uint16 y) {
object_t *obj;
seq_t *curImage;
int16 objIndex = -1; // Index of found object
uint16 y2Max = 0; // Greatest y2
int i;
debugC(3, kDebugEngine, "findObject(%d, %d)", x, y);
// Check objects on screen
for (i = 0, obj = _objects; i < _numObj; i++, obj++) {
// Object must be in current screen and "useful"
if (obj->screenIndex == *_screen_p && (obj->genericCmd || obj->objValue || obj->cmdIndex)) {
curImage = obj->currImagePtr;
// Object must have a visible image...
if (curImage != NULL && obj->cycling != INVISIBLE) {
// If cursor inside object
if (x >= (uint16)obj->x && x <= obj->x + curImage->x2 && y >= (uint16)obj->y && y <= obj->y + curImage->y2)
// If object is closest so far
if (obj->y + curImage->y2 > y2Max) {
y2Max = obj->y + curImage->y2;
objIndex = i; // Found an object!
}
} else
// ...or a dummy object that has a hotspot rectangle
if (curImage == NULL && obj->vxPath != 0 && !obj->carriedFl) {
// If cursor inside special rectangle
if ((int16)x >= obj->oldx && (int16)x < obj->oldx + obj->vxPath && (int16)y >= obj->oldy && (int16)y < obj->oldy + obj->vyPath)
// If object is closest so far
if (obj->oldy + obj->vyPath - 1 > (int16)y2Max) {
y2Max = obj->oldy + obj->vyPath - 1;
objIndex = i; // Found an object!
}
}
}
}
return objIndex;
}
// Find a clear space around supplied object that hero can walk to
bool HugoEngine::findObjectSpace(object_t *obj, int16 *destx, int16 *desty) {
// bool found = false; // TRUE if we found a clear space
bool foundFl;
seq_t *curImage = obj->currImagePtr;
int16 x;
int16 y = obj->y + curImage->y2 - 1;
debugC(1, kDebugEngine, "findObjectSpace(obj, %d, %d)", *destx, *desty);
// if (!found) // Try left rear corner
for (foundFl = true, *destx = x = obj->x + curImage->x1; x < *destx + HERO_MAX_WIDTH; x++)
if (BOUND(x, y))
foundFl = false;
if (!foundFl) // Try right rear corner
for (foundFl = true, *destx = x = obj->x + curImage->x2 - HERO_MAX_WIDTH + 1; x <= obj->x + (int16)curImage->x2; x++)
if (BOUND(x, y))
foundFl = false;
if (!foundFl) // Try left front corner
for (foundFl = true, y += 2, *destx = x = obj->x + curImage->x1; x < *destx + HERO_MAX_WIDTH; x++)
if (BOUND(x, y))
foundFl = false;
if (!foundFl) // Try right rear corner
for (foundFl = true, *destx = x = obj->x + curImage->x2 - HERO_MAX_WIDTH + 1; x <= obj->x + (int16)curImage->x2; x++)
if (BOUND(x, y))
foundFl = false;
*desty = y;
return(foundFl);
}
// Search background command list for this screen for supplied object.
// Return first associated verb (not "look") or NULL if none found.
char *HugoEngine::useBG(char *name) {
int i;
objectList_t p = _backgroundObjects[*_screen_p];
debugC(1, kDebugEngine, "useBG(%s)", name);
for (i = 0; *_arrayVerbs[p[i].verbIndex]; i++)
if ((name == _arrayNouns[p[i].nounIndex][0] &&
p[i].verbIndex != _look) &&
((p[i].roomState == DONT_CARE) || (p[i].roomState == _screenStates[*_screen_p])))
return (_arrayVerbs[p[i].verbIndex][0]);
return (NULL);
}
// If status.objid = -1, pick up objid, else use status.objid on objid,
// if objid can't be picked up, use it directly
void HugoEngine::useObject(int16 objId) {
object_t *obj = &_objects[objId]; // Ptr to object
uses_t *use; // Ptr to use entry
target_t *target; // Ptr to target entry
bool foundFl; // TRUE if found target entry
char *verb; // Background verb to use directly
debugC(1, kDebugEngine, "useObject(%d)", objId);
if (_status.inventoryObjId == -1) {
// Get or use objid directly
if ((obj->genericCmd & TAKE) || obj->objValue) // Get collectible item
sprintf(_line, "%s %s", _arrayVerbs[_take][0], _arrayNouns[obj->nounIndex][0]);
else if (obj->cmdIndex != 0) // Use non-collectible item if able
sprintf(_line, "%s %s", _arrayVerbs[_cmdList[obj->cmdIndex][1].verbIndex][0], _arrayNouns[obj->nounIndex][0]);
else if ((verb = useBG(_arrayNouns[obj->nounIndex][0])) != NULL)
sprintf(_line, "%s %s", verb, _arrayNouns[obj->nounIndex][0]);
else
return; // Can't use object directly
} else {
// Use status.objid on objid
// Default to first cmd verb
sprintf(_line, "%s %s %s", _arrayVerbs[_cmdList[_objects[_status.inventoryObjId].cmdIndex][1].verbIndex][0], _arrayNouns[_objects[_status.inventoryObjId].nounIndex][0], _arrayNouns[obj->nounIndex][0]);
// Check valid use of objects and override verb if necessary
for (use = _uses; use->objId != _numObj; use++)
if (_status.inventoryObjId == use->objId) {
// Look for secondary object, if found use matching verb
for (foundFl = false, target = use->targets; _arrayNouns[target->nounIndex] != NULL; target++)
if (_arrayNouns[target->nounIndex][0] == _arrayNouns[obj->nounIndex][0]) {
foundFl = true;
sprintf(_line, "%s %s %s", _arrayVerbs[target->verbIndex][0], _arrayNouns[_objects[_status.inventoryObjId].nounIndex][0], _arrayNouns[obj->nounIndex][0]);
}
// No valid use of objects found, print failure string
if (!foundFl) {
// Deselect dragged icon if inventory not active
if (_status.inventoryState != I_ACTIVE)
_status.inventoryObjId = -1;
Utils::Box(BOX_ANY, HugoEngine::get()._textData[use->dataIndex]);
return;
}
}
}
if (_status.inventoryState == I_ACTIVE) // If inventory active, remove it
_status.inventoryState = I_UP;
_status.inventoryObjId = -1; // Deselect any dragged icon
parser().lineHandler(); // and process command
}
// Issue "Look at <object>" command
// Note special case of swapped hero image
void HugoEngine::lookObject(object_t *obj) {
debugC(1, kDebugEngine, "lookObject");
if (obj == _hero) {
// Hero swapped - look at other
obj = &_objects[_heroImage];
}
parser().command("%s %s", _arrayVerbs[_look][0], _arrayNouns[obj->nounIndex][0]);
}
// Free all object images
void HugoEngine::freeObjects() {
object_t *obj;
seq_t *seq;
debugC(1, kDebugEngine, "freeObjects");
// Nothing to do if not allocated yet
if (_hero->seqList[0].seqPtr == NULL)
return;
// Free all sequence lists and image data
for (int i = 0; i < _numObj; i++) {
obj = &_objects[i];
for (int j = 0; j < obj->seqNumb; j++) { // for each sequence
seq = obj->seqList[j].seqPtr; // Free image
if (seq == NULL) // Failure during database load
break;
do {
free(seq->imagePtr);
seq = seq->nextSeqPtr;
} while (seq != obj->seqList[j].seqPtr);
free(seq); // Free sequence record
}
}
}
// Add action lists for this screen to event queue
void HugoEngine::screenActions(int screenNum) {
uint16 *screenAct = _screenActs[screenNum];
debugC(1, kDebugEngine, "screenActions(%d)", screenNum);
if (screenAct) {
for (int i = 0; screenAct[i]; i++)
HugoEngine::get().scheduler().insertActionList(screenAct[i]);
}
}
// Set the new screen number into the hero object and any carried objects
void HugoEngine::setNewScreen(int screenNum) {
debugC(1, kDebugEngine, "setNewScreen(%d)", screenNum);
*_screen_p = screenNum; // HERO object
for (int i = HERO + 1; i < _numObj; i++) // Any others
if (_objects[i].carriedFl) // being carried
_objects[i].screenIndex = screenNum;
}
// An object has collided with a boundary. See if any actions are required
void HugoEngine::boundaryCollision(object_t *obj) {
int x, y, dx, dy;
int8 radius; // 8 bits signed
hotspot_t *hotspot;
debugC(1, kDebugEngine, "boundaryCollision");
if (obj == _hero) {
// Hotspots only relevant to HERO
if (obj->vx > 0)
x = obj->x + obj->currImagePtr->x2;
else
x = obj->x + obj->currImagePtr->x1;
y = obj->y + obj->currImagePtr->y2;
for (int i = 0; _hotspots[i].screenIndex >= 0; i++) {
hotspot = &_hotspots[i];
if (hotspot->screenIndex == obj->screenIndex)
if ((x >= hotspot->x1) && (x <= hotspot->x2) && (y >= hotspot->y1) && (y <= hotspot->y2)) {
HugoEngine::get().scheduler().insertActionList(hotspot->actIndex);
break;
}
}
} else {
// Check whether an object collided with HERO
dx = _hero->x + _hero->currImagePtr->x1 - obj->x - obj->currImagePtr->x1;
dy = _hero->y + _hero->currImagePtr->y2 - obj->y - obj->currImagePtr->y2;
// If object's radius is infinity, use a closer value
radius = obj->radius;
if (radius < 0)
radius = DX * 2;
if ((abs(dx) <= radius) && (abs(dy) <= radius))
HugoEngine::get().scheduler().insertActionList(obj->actIndex);
}
}
// Initialize screen components and display results
void HugoEngine::initNewScreenDisplay() {
debugC(1, kDebugEngine, "initNewScreenDisplay");
screen().displayList(D_INIT);
screen().setBackgroundColor(_TBLACK);
screen().displayBackground();
// Stop premature object display in Display_list(D_DISPLAY)
_status.newScreenFl = true;
}
// Add up all the object values and all the bonus points
void HugoEngine::calcMaxScore() {
int i;
debugC(1, kDebugEngine, "calcMaxScore");
for (i = 0; i < _numObj; i++)
_maxscore += _objects[i].objValue;
for (i = 0; i < _numBonuses; i++)
_maxscore += _points[i].score;
}
// Exit game, advertise trilogy, show copyright
void HugoEngine::endGame() {
debugC(1, kDebugEngine, "endGame");
if (!_boot.registered)
Utils::Box(BOX_ANY, HugoEngine::get()._textEngine[kEsAdvertise]);
Utils::Box(BOX_ANY, "%s\n%s", _episode, COPYRIGHT);
_status.viewState = V_EXIT;
}
} // end of namespace Hugo