CHEWY: Initial implementation of scene sprites, props and hotspots

3 files changed, 159 insertions, 0 deletions

diff --git a/engines/chewy/events.cpp b/engines/chewy/events.cpp
index 6675fea392..55a7b62bff 100644
--- a/engines/chewy/events.cpp
+++ b/engines/chewy/events.cpp
@@ -28,6 +28,7 @@
 #include "chewy/cursor.h"
 #include "chewy/events.h"
 #include "chewy/graphics.h"
+#include "chewy/scene.h"
 
 namespace Chewy {
 
@@ -56,6 +57,8 @@ void Events::processEvents() {
 			}
 		} else if (_event.type == Common::EVENT_RBUTTONUP) {
 			_vm->_cursor->nextCursor();
+		} else if (_event.type == Common::EVENT_MOUSEMOVE) {
+			_vm->_scene->updateMouse(_event.mouse);
 		}
 	}
 }
diff --git a/engines/chewy/scene.cpp b/engines/chewy/scene.cpp
index 03e4332f85..c6c12fc3ff 100644
--- a/engines/chewy/scene.cpp
+++ b/engines/chewy/scene.cpp
@@ -35,10 +35,53 @@
 
 namespace Chewy {
 
+#define MAX_DETAILS 32
+#define MAX_HOTSPOTS 50
+
+// Animated details - scene animations
+struct AnimatedDetails {
+	uint16 x;
+	uint16 y;
+	// 66 bytes animated details - TODO
+};
+
+// Static details - scene sprites and props
+struct StaticDetails {
+	int16 x;
+	int16 y;
+	int16 spriteNum;
+	uint16 z;
+	byte hide;
+	// 1 byte dummy
+};
+
+struct SceneInfo {
+	uint16 staticDetailsCount;
+	uint16 animatedDetailsCount;
+	uint32 spritePtr;
+	AnimatedDetails animatedDetails[MAX_DETAILS];
+	StaticDetails staticDetails[MAX_DETAILS];
+	Common::Rect hotspot[MAX_HOTSPOTS];
+	uint16 hotspotDescRes[MAX_HOTSPOTS];
+	Common::String hotspotDesc[MAX_HOTSPOTS];
+	byte roomNum;
+	byte picNum;
+	byte autoMoveCount;
+	byte loadTaf;
+	Common::String tafName;	// 14 bytes
+	byte zoomFactor;
+	// 1 byte dummy
+	// 6 * 20 = 120 bytes automove coordinates - TODO
+	// MAX_DETAILS * 3 * 2 = 192 bytes voc - TODO
+	// MAX_DETAILS * 3 = 96 bytes samples - TODO
+};
+
 Scene::Scene(ChewyEngine *vm) : _vm(vm) {
+	_sceneInfo = new SceneInfo();
 }
 
 Scene::~Scene() {
+	delete _sceneInfo;
 }
 
 void Scene::change(uint scene) {
@@ -46,14 +89,121 @@ void Scene::change(uint scene) {
 	_vm->_cursor->setCursor(0);
 	_vm->_cursor->showCursor();
 	
+	loadSceneInfo();
 	draw();
 }
 
 void Scene::draw() {
+	// Background
 	_vm->_graphics->drawImage("episode1.tgp", _curScene);
+
+	// Static details
+	for (uint16 i = 0; i < MAX_HOTSPOTS; i++) {
+		StaticDetails s = _sceneInfo->staticDetails[i];
+		if (s.spriteNum >= 0 && s.x >= 0 && s.y >= 0 && !s.hide)
+			_vm->_graphics->drawSprite(Common::String::format("det%d.taf", _curScene), s.spriteNum, s.x, s.y);
+	}
+
+	// TODO: These are all hardcoded for now
 	_vm->_graphics->drawSprite("det1.taf", 0, 200, 100);
 	_vm->_graphics->loadFont("6x8.tff");
 	_vm->_graphics->drawText("This is a test", 200, 80);
 }
 
+void Scene::updateMouse(Common::Point coords) {
+	// Animated details
+	// TODO: handle these
+
+	// Static details
+	for (uint16 i = 0; i < MAX_HOTSPOTS; i++) {
+		if (_sceneInfo->hotspot[i].contains(coords)) {
+			// TODO: Draw hotspot description on screen
+			debug("Coords %d, %d: '%s'", coords.x, coords.y, _sceneInfo->hotspotDesc[i].c_str());
+			break;
+		}
+	}
+}
+
+void Scene::loadSceneInfo() {
+	const uint32 sceneInfoSize = 3784;
+	const uint32 headerRDI = MKTAG('R', 'D', 'I', '\0');
+	const char *sceneIndexFileName = "test.rdi";
+	Common::File indexFile;
+	if (!Common::File::exists(sceneIndexFileName))
+		error("File %s not found", sceneIndexFileName);
+	Text *text = new Text();
+
+	indexFile.open(sceneIndexFileName);
+
+	uint32 header = indexFile.readUint32BE();
+	if (header != headerRDI)
+		error("Invalid resource - %s", sceneIndexFileName);
+
+	indexFile.seek(sceneInfoSize * _curScene, SEEK_CUR);
+
+	// TODO: These can be set to larger numbers than MAX_DETAILS
+	_sceneInfo->staticDetailsCount = indexFile.readUint16LE();
+	_sceneInfo->animatedDetailsCount = indexFile.readUint16LE();
+	indexFile.skip(6);
+
+	// Animated details
+	for (int i = 0; i < MAX_DETAILS; i++) {
+		_sceneInfo->animatedDetails[i].x = indexFile.readUint16LE();
+		_sceneInfo->animatedDetails[i].y = indexFile.readUint16LE();
+		indexFile.skip(66);	// animated details info - TODO: read these
+	}
+
+	// Static details
+	for (int i = 0; i < MAX_DETAILS; i++) {
+		_sceneInfo->staticDetails[i].x = indexFile.readSint16LE();
+		_sceneInfo->staticDetails[i].y = indexFile.readSint16LE();
+		_sceneInfo->staticDetails[i].spriteNum = indexFile.readSint16LE();
+		_sceneInfo->staticDetails[i].z = indexFile.readUint16LE();
+		_sceneInfo->staticDetails[i].hide = indexFile.readByte();
+		indexFile.readByte();	// padding
+	}
+
+	// Hotspots
+	for (int i = 0; i < MAX_HOTSPOTS; i++) {
+		_sceneInfo->hotspot[i].left = indexFile.readUint16LE();
+		_sceneInfo->hotspot[i].top = indexFile.readUint16LE();
+		_sceneInfo->hotspot[i].right = indexFile.readUint16LE();
+		_sceneInfo->hotspot[i].bottom = indexFile.readUint16LE();
+		if (!_sceneInfo->hotspot[i].isValidRect())
+			warning("Hotspot %d has an invalid rect", i);
+	}
+
+	// Hotspot descriptions
+	for (int i = 0; i < MAX_HOTSPOTS; i++) {
+		_sceneInfo->hotspotDescRes[i] = indexFile.readUint16LE();
+		
+		if (_sceneInfo->hotspotDescRes[i] < kATSTextMax) {
+			// TODO: Hotspot description IDs are off... investigate why
+			_sceneInfo->hotspotDesc[i] = text->getText(_curScene + kADSTextMax, _sceneInfo->hotspotDescRes[i])->text;
+		} else {
+			// TODO: Handle these types of hotspot descriptions
+			warning("Hotspot %d has an invalid description resource (%d)", i, _sceneInfo->hotspotDescRes[i]);
+			_sceneInfo->hotspotDesc[i] = Common::String::format("Hotspot %d", _sceneInfo->hotspotDescRes[i]);
+		}
+	}
+
+	_sceneInfo->roomNum = indexFile.readByte();
+	_sceneInfo->picNum = indexFile.readByte();
+	_sceneInfo->autoMoveCount = indexFile.readByte();
+	_sceneInfo->loadTaf = indexFile.readByte();
+	
+	for (int i = 0; i < 14; i++)
+		_sceneInfo->tafName += indexFile.readByte();
+
+	_sceneInfo->zoomFactor = indexFile.readByte();
+	indexFile.readByte();	// padding
+	
+	// 6 * 20 = 120 bytes automove coordinates - TODO: read these
+	// MAX_DETAILS * 3 * 2 = 192 bytes voc - TODO: read these
+	// MAX_DETAILS * 3 = 96 bytes samples - TODO: read these
+
+	delete text;
+	indexFile.close();
+}
+
 } // End of namespace Chewy
diff --git a/engines/chewy/scene.h b/engines/chewy/scene.h
index 37601d057b..24692c8486 100644
--- a/engines/chewy/scene.h
+++ b/engines/chewy/scene.h
@@ -27,6 +27,8 @@
 
 namespace Chewy {
 
+struct SceneInfo;
+
 class Scene {
 public:
 	Scene(ChewyEngine *vm);
@@ -34,10 +36,14 @@ public:
 
 	void change(uint scene);
 	void draw();
+	void updateMouse(Common::Point coords);
 
 private:
+	void loadSceneInfo();
+
 	ChewyEngine *_vm;
 	uint _curScene;
+	SceneInfo *_sceneInfo;
 };
 
 } // End of namespace Chewy