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engines/sword2/anims.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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1994-1998 Revolution Software Ltd.
+ *
+ * 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/>.
+ */
+
+// ---------------------------------------------------------------------------
+// A more intelligent version of the old ANIMS.C
+// All this stuff by James
+// DON'T TOUCH!
+// ---------------------------------------------------------------------------
+
+
+#include "common/file.h"
+
+#include "sword2/sword2.h"
+#include "sword2/defs.h"
+#include "sword2/header.h"
+#include "sword2/screen.h"
+#include "sword2/interpreter.h"
+#include "sword2/logic.h"
+#include "sword2/maketext.h"
+#include "sword2/resman.h"
+#include "sword2/router.h"
+#include "sword2/sound.h"
+#include "sword2/animation.h"
+
+namespace Sword2 {
+
+int Router::doAnimate(byte *ob_logic, byte *ob_graph, int32 animRes, bool reverse) {
+	AnimHeader anim_head;
+	byte *anim_file;
+
+	ObjectLogic obLogic(ob_logic);
+	ObjectGraphic obGraph(ob_graph);
+
+	if (obLogic.getLooping() == 0) {
+		// This is the start of the anim - set up the first frame
+
+		// For testing all anims!
+		// A script loop can send every resource number to the anim
+		// function & it will only run the valid ones. See
+		// 'testing_routines' object in George's Player Character
+		// section of linc
+
+		if (_vm->_logic->readVar(SYSTEM_TESTING_ANIMS)) {
+			if (!_vm->_resman->checkValid(animRes)) {
+				// Not a valid resource number. Switch off
+				// the sprite. Don't animate - just continue
+				// script next cycle.
+				setSpriteStatus(ob_graph, NO_SPRITE);
+				return IR_STOP;
+			}
+
+			// if it's not an animation file
+			if (_vm->_resman->fetchType(animRes) != ANIMATION_FILE) {
+				// switch off the sprite
+				// don't animate - just continue
+				// script next cycle
+				setSpriteStatus(ob_graph, NO_SPRITE);
+				return IR_STOP;
+			}
+
+			// switch on the sprite
+			setSpriteStatus(ob_graph, SORT_SPRITE);
+		}
+
+		assert(animRes);
+
+		// open anim file
+		anim_file = _vm->_resman->openResource(animRes);
+
+		assert(_vm->_resman->fetchType(animRes) == ANIMATION_FILE);
+
+		// point to anim header
+		anim_head.read(_vm->fetchAnimHeader(anim_file));
+
+		// now running an anim, looping back to this call again
+		obLogic.setLooping(1);
+		obGraph.setAnimResource(animRes);
+
+		if (reverse)
+			obGraph.setAnimPc(anim_head.noAnimFrames - 1);
+		else
+			obGraph.setAnimPc(0);
+	} else if (_vm->_logic->getSync() != -1) {
+		// We've received a sync - return to script immediately
+		debug(5, "**sync stopped %d**", _vm->_logic->readVar(ID));
+
+		// If sync received, anim finishes right now (remaining on
+		// last frame). Quit animation, but continue script.
+		obLogic.setLooping(0);
+		return IR_CONT;
+	} else {
+		// Not first frame, and no sync received - set up the next
+		// frame of the anim.
+
+		// open anim file and point to anim header
+		anim_file = _vm->_resman->openResource(obGraph.getAnimResource());
+		anim_head.read(_vm->fetchAnimHeader(anim_file));
+
+		if (reverse)
+			obGraph.setAnimPc(obGraph.getAnimPc() - 1);
+		else
+			obGraph.setAnimPc(obGraph.getAnimPc() + 1);
+	}
+
+	// check for end of anim
+
+	if (reverse) {
+		if (obGraph.getAnimPc() == 0)
+			obLogic.setLooping(0);
+	} else {
+		if (obGraph.getAnimPc() == anim_head.noAnimFrames - 1)
+			obLogic.setLooping(0);
+	}
+
+	// close the anim file
+	_vm->_resman->closeResource(obGraph.getAnimResource());
+
+	// check if we want the script to loop back & call this function again
+	return obLogic.getLooping() ? IR_REPEAT : IR_STOP;
+}
+
+int Router::megaTableAnimate(byte *ob_logic, byte *ob_graph, byte *ob_mega, byte *animTable, bool reverse) {
+	int32 animRes = 0;
+
+	// If this is the start of the anim, read the anim table to get the
+	// appropriate anim resource
+
+	ObjectLogic obLogic(ob_logic);
+
+	if (obLogic.getLooping() == 0) {
+		ObjectMega obMega(ob_mega);
+
+		// Appropriate anim resource is in 'table[direction]'
+		animRes = READ_LE_UINT32(animTable + 4 * obMega.getCurDir());
+	}
+
+	return doAnimate(ob_logic, ob_graph, animRes, reverse);
+}
+
+void Router::setSpriteStatus(byte *ob_graph, uint32 type) {
+	ObjectGraphic obGraph(ob_graph);
+
+	// Remove the previous status, but don't affect the shading upper-word
+	obGraph.setType((obGraph.getType() & 0xffff0000) | type);
+}
+
+void Router::setSpriteShading(byte *ob_graph, uint32 type) {
+	ObjectGraphic obGraph(ob_graph);
+
+	// Remove the previous shading, but don't affect the status lower-word.
+	// Note that mega frames may still be shaded automatically, even when
+	// not sent 'RDSPR_SHADOW'.
+	obGraph.setType((obGraph.getType() & 0x0000ffff) | type);
+}
+
+} // End of namespace Sword2