Initial commit

engines/darkseed/sprites.cpp

@@ -0,0 +1,78 @@
+/* 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/>.
+*
+*/
+
+#include "darkseed/sprites.h"
+#include "darkseed/darkseed.h"
+
+namespace Darkseed {
+
+#define DARKSEED_MAX_SPRITES_ON_SCREEN 30
+
+Sprites::Sprites() {
+	_spriteDrawList.reserve(DARKSEED_MAX_SPRITES_ON_SCREEN);
+}
+
+void Sprites::addSpriteToDrawList(uint16 destX, uint16 destY, const Sprite *sprite, uint8 order, uint16 destW, uint16 destH, bool flip) {
+	if (_spriteDrawList.size() == DARKSEED_MAX_SPRITES_ON_SCREEN || destX >= 570) {
+		return;
+	}
+
+	SpriteDrawInstruction drawInstruction;
+	drawInstruction.destX = destX;
+	drawInstruction.destY = destY;
+	drawInstruction.sprite = sprite;
+	drawInstruction.order = order;
+	drawInstruction.destW = destW;
+	drawInstruction.destH = destH;
+	drawInstruction.flip = flip;
+
+	if (!_spriteDrawList.empty()) {
+		uint insertLocation = 0;
+		for (; insertLocation < _spriteDrawList.size(); insertLocation++) {
+			if (order < _spriteDrawList[insertLocation].order) {
+				break;
+			}
+		}
+		_spriteDrawList.insert_at(insertLocation, drawInstruction);
+	} else {
+		_spriteDrawList.push_back(drawInstruction);
+	}
+}
+
+void Sprites::clearSpriteDrawList() {
+	// not using clear() here to avoid freeing array storage memory.
+	while (!_spriteDrawList.empty()) {
+		_spriteDrawList.pop_back();
+	}
+}
+
+void Sprites::drawSprites() {
+	for (int i = _spriteDrawList.size() - 1; i >= 0; i--) {
+		SpriteDrawInstruction &drawInstruction = _spriteDrawList[i];
+		if (drawInstruction.sprite->_width == drawInstruction.destW && drawInstruction.sprite->_height == drawInstruction.destH && !drawInstruction.flip) {
+			drawInstruction.sprite->draw(drawInstruction.destX, drawInstruction.destY, g_engine->_frameBottom); // TODO add support for flipping sprite.
+		} else {
+			drawInstruction.sprite->drawScaled(drawInstruction.destX, drawInstruction.destY, drawInstruction.destW, drawInstruction.destH, drawInstruction.flip);
+		}
+	}
+}
+
+} // End of namespace Darkseed