scummvm/engines/saga/objectmap.cpp
Filippos Karapetis 5d1e3fd03e Some dirty rectangle related code
svn-id: r35267
2008-12-07 00:27:39 +00:00

291 lines
7.5 KiB
C++

/* 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.
*
* $URL$
* $Id$
*
*/
// Object map / Object click-area module
// Polygon Hit Test code ( HitTestPoly() ) adapted from code (C) Eric Haines
// appearing in Graphics Gems IV, "Point in Polygon Strategies."
// p. 24-46, code: p. 34-45
#include "saga/saga.h"
#include "saga/gfx.h"
#include "saga/console.h"
#include "saga/font.h"
#include "saga/interface.h"
#include "saga/objectmap.h"
#include "saga/actor.h"
#include "saga/scene.h"
#include "saga/isomap.h"
namespace Saga {
HitZone::HitZone(MemoryReadStreamEndian *readStream, int index, int sceneNumber): _index(index) {
int i, j;
HitZone::ClickArea *clickArea;
Point *point;
_flags = readStream->readByte();
_clickAreasCount = readStream->readByte();
_rightButtonVerb = readStream->readByte();
readStream->readByte(); // pad
_nameIndex = readStream->readUint16();
_scriptNumber = readStream->readUint16();
_clickAreas = (HitZone::ClickArea *)malloc(_clickAreasCount * sizeof(*_clickAreas));
if (_clickAreas == NULL) {
memoryError("HitZone::HitZone");
}
for (i = 0; i < _clickAreasCount; i++) {
clickArea = &_clickAreas[i];
clickArea->pointsCount = readStream->readUint16LE();
assert(clickArea->pointsCount);
clickArea->points = (Point *)malloc(clickArea->pointsCount * sizeof(*(clickArea->points)));
if (clickArea->points == NULL) {
memoryError("HitZone::HitZone");
}
for (j = 0; j < clickArea->pointsCount; j++) {
point = &clickArea->points[j];
point->x = readStream->readSint16();
point->y = readStream->readSint16();
// WORKAROUND: bug #1259608: "ITE: Riff ignores command in Ferret merchant center"
// Apparently ITE Mac version has bug in game data. Both ObjectMap and ActionMap
// for exit area are little taller (y = 123) and thus Riff goes to exit
// when clicked on barrel of nails.
if (sceneNumber == 18 && index == 0 && i == 0 && j == 0 && point->y == 123)
point->y = 129;
}
}
}
HitZone::~HitZone() {
for (int i = 0; i < _clickAreasCount; i++) {
free(_clickAreas[i].points);
}
free(_clickAreas);
}
bool HitZone::getSpecialPoint(Point &specialPoint) const {
int i, pointsCount;
HitZone::ClickArea *clickArea;
Point *points;
for (i = 0; i < _clickAreasCount; i++) {
clickArea = &_clickAreas[i];
pointsCount = clickArea->pointsCount;
points = clickArea->points;
if (pointsCount == 1) {
specialPoint = points[0];
return true;
}
}
return false;
}
bool HitZone::hitTest(const Point &testPoint) {
int i, pointsCount;
HitZone::ClickArea *clickArea;
Point *points;
if (_flags & kHitZoneEnabled) {
for (i = 0; i < _clickAreasCount; i++) {
clickArea = &_clickAreas[i];
pointsCount = clickArea->pointsCount;
points = clickArea->points;
if (pointsCount == 2) {
// Hit-test a box region
if ((testPoint.x >= points[0].x) &&
(testPoint.x <= points[1].x) &&
(testPoint.y >= points[0].y) &&
(testPoint.y <= points[1].y)) {
return true;
}
} else {
if (pointsCount > 2) {
// Hit-test a polygon
if (hitTestPoly(points, pointsCount, testPoint)) {
return true;
}
}
}
}
}
return false;
}
#ifdef SAGA_DEBUG
void HitZone::draw(SagaEngine *vm, int color) {
int i, pointsCount, j;
Location location;
HitZone::ClickArea *clickArea;
Point *points;
Point specialPoint1;
Point specialPoint2;
for (i = 0; i < _clickAreasCount; i++) {
clickArea = &_clickAreas[i];
pointsCount = clickArea->pointsCount;
if (vm->_scene->getFlags() & kSceneFlagISO) {
points = (Point*)malloc(sizeof(Point) * pointsCount);
for (j = 0; j < pointsCount; j++) {
location.u() = clickArea->points[j].x;
location.v() = clickArea->points[j].y;
location.z = 0;
vm->_isoMap->tileCoordsToScreenPoint(location, points[j]);
}
} else {
points = clickArea->points;
}
if (pointsCount == 2) {
// 2 points represent a box
vm->_gfx->drawFrame(points[0], points[1], color);
} else {
if (pointsCount > 2) {
// Otherwise draw a polyline
// Do a full refresh so that the polyline can be shown
vm->_render->setFullRefresh(true);
vm->_gfx->drawPolyLine(points, pointsCount, color);
}
}
if (vm->_scene->getFlags() & kSceneFlagISO) {
free(points);
}
}
if (getSpecialPoint(specialPoint1)) {
specialPoint2 = specialPoint1;
specialPoint1.x--;
specialPoint1.y--;
specialPoint2.x++;
specialPoint2.y++;
vm->_gfx->drawFrame(specialPoint1, specialPoint2, color);
}
}
#endif
// Loads an object map resource ( objects ( clickareas ( points ) ) )
void ObjectMap::load(const byte *resourcePointer, size_t resourceLength) {
int i;
if (resourceLength == 0) {
return;
}
if (resourceLength < 4) {
error("ObjectMap::load wrong resourceLength");
}
MemoryReadStreamEndian readS(resourcePointer, resourceLength, _vm->isBigEndian());
_hitZoneListCount = readS.readSint16();
if (_hitZoneListCount < 0) {
error("ObjectMap::load _hitZoneListCount < 0");
}
if (_hitZoneList)
error("ObjectMap::load _hitZoneList != NULL");
_hitZoneList = (HitZone **) malloc(_hitZoneListCount * sizeof(HitZone *));
if (_hitZoneList == NULL) {
memoryError("ObjectMap::load");
}
for (i = 0; i < _hitZoneListCount; i++) {
_hitZoneList[i] = new HitZone(&readS, i, _vm->_scene->currentSceneNumber());
}
}
void ObjectMap::freeMem() {
int i;
if (_hitZoneList) {
for (i = 0; i < _hitZoneListCount; i++) {
delete _hitZoneList[i];
}
free(_hitZoneList);
_hitZoneList = NULL;
}
_hitZoneListCount = 0;
}
#ifdef SAGA_DEBUG
void ObjectMap::draw(const Point& testPoint, int color, int color2) {
int i;
int hitZoneIndex;
char txtBuf[32];
Point pickPoint;
Point textPoint;
Location pickLocation;
pickPoint = testPoint;
if (_vm->_scene->getFlags() & kSceneFlagISO) {
assert(_vm->_actor->_protagonist);
pickPoint.y -= _vm->_actor->_protagonist->_location.z;
_vm->_isoMap->screenPointToTileCoords(pickPoint, pickLocation);
pickLocation.toScreenPointUV(pickPoint);
}
hitZoneIndex = hitTest(pickPoint);
for (i = 0; i < _hitZoneListCount; i++) {
_hitZoneList[i]->draw(_vm, (hitZoneIndex == i) ? color2 : color);
}
if (hitZoneIndex != -1) {
snprintf(txtBuf, sizeof(txtBuf), "hitZone %d", hitZoneIndex);
textPoint.x = 2;
textPoint.y = 2;
_vm->_font->textDraw(kKnownFontSmall, txtBuf, textPoint, kITEColorBrightWhite, kITEColorBlack, kFontOutline);
}
}
#endif
int ObjectMap::hitTest(const Point& testPoint) {
int i;
// Loop through all scene objects
for (i = 0; i < _hitZoneListCount; i++) {
if (_hitZoneList[i]->hitTest(testPoint)) {
return i;
}
}
return -1;
}
void ObjectMap::cmdInfo(void) {
_vm->_console->DebugPrintf("%d zone(s) loaded.\n\n", _hitZoneListCount);
}
} // End of namespace Saga