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/* 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.
*
*/
// 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"
#ifdef SAGA_DEBUG
#include "saga/render.h"
#endif
namespace Saga {
void HitZone::load(SagaEngine *vm, Common::MemoryReadStreamEndian *readStream, int index, int sceneNumber) {
_index = index;
_flags = readStream->readByte();
_clickAreas.resize(readStream->readByte());
_rightButtonVerb = readStream->readByte();
readStream->readByte(); // pad
_nameIndex = readStream->readUint16();
_scriptNumber = readStream->readUint16();
for (ClickAreas::iterator i = _clickAreas.begin(); i != _clickAreas.end(); ++i) {
i->resize(readStream->readUint16LE());
assert(!i->empty());
for (ClickArea::iterator j = i->begin(); j != i->end(); ++j) {
j->x = readStream->readSint16();
j->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 (vm->getGameId() == GID_ITE) {
if (sceneNumber == 18 && index == 0 && (i == _clickAreas.begin()) && (j == i->begin()) && j->y == 123) {
j->y = 129;
}
}
}
}
}
bool HitZone::getSpecialPoint(Point &specialPoint) const {
for (ClickAreas::const_iterator i = _clickAreas.begin(); i != _clickAreas.end(); ++i) {
if (i->size() == 1) {
specialPoint = (*i)[0];
return true;
}
}
return false;
}
bool HitZone::hitTest(const Point &testPoint) {
const Point *points;
uint pointsCount;
if (_flags & kHitZoneEnabled) {
for (ClickAreas::const_iterator i = _clickAreas.begin(); i != _clickAreas.end(); ++i) {
pointsCount = i->size();
if (pointsCount < 2) {
continue;
}
points = &i->front();
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 {
// Hit-test a polygon
if (hitTestPoly(points, pointsCount, testPoint)) {
return true;
}
}
}
}
return false;
}
#ifdef SAGA_DEBUG
void HitZone::draw(SagaEngine *vm, int color) {
int pointsCount, j;
Location location;
HitZone::ClickArea tmpPoints;
const Point *points;
Point specialPoint1;
Point specialPoint2;
for (ClickAreas::const_iterator i = _clickAreas.begin(); i != _clickAreas.end(); ++i) {
pointsCount = i->size();
points = &i->front();
if (vm->_scene->getFlags() & kSceneFlagISO) {
tmpPoints.resize(pointsCount);
for (j = 0; j < pointsCount; j++) {
location.u() = points[j].x;
location.v() = points[j].y;
location.z = 0;
vm->_isoMap->tileCoordsToScreenPoint(location, tmpPoints[j]);
}
points = &tmpPoints.front();
}
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 (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 ByteArray &resourceData) {
if (!_hitZoneList.empty()) {
error("ObjectMap::load _hitZoneList not empty");
}
if (resourceData.empty()) {
return;
}
if (resourceData.size() < 4) {
error("ObjectMap::load wrong resourceLength");
}
ByteArrayReadStreamEndian readS(resourceData, _vm->isBigEndian());
_hitZoneList.resize(readS.readUint16());
int idx = 0;
for (HitZoneArray::iterator i = _hitZoneList.begin(); i != _hitZoneList.end(); ++i) {
i->load(_vm, &readS, idx++, _vm->_scene->currentSceneNumber());
}
}
void ObjectMap::clear() {
_hitZoneList.clear();
}
#ifdef SAGA_DEBUG
void ObjectMap::draw(const Point& testPoint, int color, int color2) {
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 (HitZoneArray::iterator i = _hitZoneList.begin(); i != _hitZoneList.end(); ++i) {
i->draw(_vm, (hitZoneIndex == i->getIndex()) ? 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) {
// Loop through all scene objects
for (HitZoneArray::iterator i = _hitZoneList.begin(); i != _hitZoneList.end(); ++i) {
if (i->hitTest(testPoint)) {
return i->getIndex();
}
}
return -1;
}
void ObjectMap::cmdInfo() {
_vm->_console->DebugPrintf("%d zone(s) loaded.\n\n", _hitZoneList.size());
}
} // End of namespace Saga
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