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engines/hpl1/engine/scene/TileMapRectIt.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * Copyright (C) 2006-2010 - Frictional Games
+ *
+ * This file is part of HPL1 Engine.
+ */
+
+#include "hpl1/engine/scene/TileMapRectIt.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cTileMapRectIt::cTileMapRectIt(cVector2l avPos, cVector2l avSize, cTileMap *apTileMap, int alLayer) {
+	mpTileMap = apTileMap;
+	mpTile = NULL;
+
+	mvPos = avPos;
+	mvSize = avSize;
+
+	mlLayer = alLayer;
+	mlLayerCount = 0;
+	mlCurrentLayer = 0;
+
+	//// Clip the pos and size //////
+	// Pos smaller then (0,0)
+	if (mvPos.x < 0) {
+		mvSize.x += mvPos.x;
+		mvPos.x = 0;
+	}
+	if (mvPos.y < 0) {
+		mvSize.y += mvPos.y;
+		mvPos.y = 0;
+	}
+
+	// Size large than grid map
+	if (mvPos.x + mvSize.x > mpTileMap->mvSize.x) {
+		mvSize.x -= (mvPos.x + mvSize.x) - (mpTileMap->mvSize.x);
+	}
+	if (mvPos.y + mvSize.y > mpTileMap->mvSize.y) {
+		mvSize.y -= (mvPos.y + mvSize.y) - (mpTileMap->mvSize.y);
+	}
+
+	mlTileNum = mvPos.x + mvPos.y * mpTileMap->mvSize.x;
+	mlTileColAdd = mpTileMap->mvSize.x - mvSize.x;
+	mlTileRowCount = mvSize.y;
+	mlTileColCount = mvSize.x;
+
+	// The rect is outside of the tilemap
+	if (mvSize.x <= 0 || mvSize.y <= 0 || mvPos.x >= mpTileMap->mvSize.x || mvPos.y >= mpTileMap->mvSize.y) {
+		mlTileColCount = 0;
+		mlTileRowCount = 0;
+		mlLayerCount = (int)mpTileMap->mvTileLayer.size();
+	} else {
+	}
+
+	mbUpdated = false;
+}
+
+//-----------------------------------------------------------------------
+
+cTileMapRectIt::~cTileMapRectIt() {
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+bool cTileMapRectIt::HasNext() {
+	GetTile();
+
+	return mpTile != NULL;
+}
+
+//-----------------------------------------------------------------------
+
+cTile *cTileMapRectIt::Next() {
+	GetTile();
+
+	mbUpdated = false;
+	return mpTile;
+}
+
+//-----------------------------------------------------------------------
+
+cTile *cTileMapRectIt::PeekNext() {
+	GetTile();
+
+	return mpTile;
+}
+
+//-----------------------------------------------------------------------
+
+int cTileMapRectIt::GetNum() {
+	return mlTileNum;
+}
+
+//-----------------------------------------------------------------------
+
+int cTileMapRectIt::GetCurrentLayer() {
+	return mlCurrentLayer;
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+void cTileMapRectIt::GetTile() {
+	if (mbUpdated)
+		return;
+	mbUpdated = true;
+
+	// We are gonna check till we find a non NULL value or the end.
+	while (true) {
+		// Check if end of the this tile pos
+		if ((mlLayer >= 0 && mlLayerCount > 0) || (mlLayer == -1 && mlLayerCount >= (int)mpTileMap->mvTileLayer.size())) {
+			mlLayerCount = 0;
+
+			mlTileNum++;
+			mlTileColCount--;
+			if (mlTileColCount <= 0) {
+				// Log("New row!\n\n");
+				mlTileColCount = mvSize.x;
+				mlTileRowCount--;
+				if (mlTileRowCount <= 0) {
+					mpTile = NULL;
+					break;
+				}
+				mlTileNum += mlTileColAdd;
+			}
+		} else {
+			if (mlLayer < 0) {
+				mpTile = mpTileMap->mvTileLayer[mlLayerCount]->mvTile[mlTileNum];
+				mlCurrentLayer = mlLayerCount;
+			} else {
+				mpTile = mpTileMap->mvTileLayer[mlLayer]->mvTile[mlTileNum];
+				mlCurrentLayer = mlLayer;
+			}
+
+			mlLayerCount++;
+
+			if (mpTile != NULL) {
+				iTileData *pData = mpTile->GetTileData();
+				if (pData && pData->IsSolid()) {
+					mlLayerCount = (int)mpTileMap->mvTileLayer.size();
+				}
+				break;
+			}
+		}
+	}
+}
+
+//-----------------------------------------------------------------------
+
+} // namespace hpl