scummvm/engines/twine/renderer/redraw.cpp

/* 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.
 *
 */

#include "twine/renderer/redraw.h"
#include "common/memstream.h"
#include "common/textconsole.h"
#include "graphics/surface.h"
#include "twine/scene/actor.h"
#include "twine/scene/animations.h"
#include "twine/audio/sound.h"
#include "twine/scene/collision.h"
#include "twine/debugger/debug_scene.h"
#include "twine/scene/grid.h"
#include "twine/hqr.h"
#include "twine/input.h"
#include "twine/menu/interface.h"
#include "twine/menu/menu.h"
#include "twine/scene/movements.h"
#include "twine/renderer/renderer.h"
#include "twine/renderer/screens.h"
#include "twine/resources.h"
#include "twine/scene/scene.h"
#include "twine/text.h"

namespace TwinE {

void Redraw::addRedrawCurrentArea(int32 left, int32 top, int32 right, int32 bottom) {
	int32 i = 0;

	const int32 area = (right - left) * (bottom - top);

	while (i < numOfRedrawBox) {
		int32 leftValue;
		if (currentRedrawList[i].left >= left) {
			leftValue = left;
		} else {
			leftValue = currentRedrawList[i].left;
		}

		int32 rightValue;
		if (currentRedrawList[i].right <= right) {
			rightValue = right;
		} else {
			rightValue = currentRedrawList[i].right;
		}

		int32 topValue;
		if (currentRedrawList[i].top >= top) {
			topValue = top;
		} else {
			topValue = currentRedrawList[i].top;
		}

		int32 bottomValue;
		if (currentRedrawList[i].bottom <= bottom) {
			bottomValue = bottom;
		} else {
			bottomValue = currentRedrawList[i].bottom;
		}

		if ((rightValue - leftValue) * (bottomValue - topValue) < ((currentRedrawList[i].bottom - currentRedrawList[i].top) * (currentRedrawList[i].right - currentRedrawList[i].left) + area)) {
			currentRedrawList[i].left = leftValue;
			currentRedrawList[i].top = topValue;
			currentRedrawList[i].right = rightValue;
			currentRedrawList[i].bottom = MIN<int32>(SCREEN_TEXTLIMIT_BOTTOM, bottomValue);

			assert(currentRedrawList[i].left <= currentRedrawList[i].right);
			assert(currentRedrawList[i].top <= currentRedrawList[i].bottom);
			return;
		}

		i++;
	}

	currentRedrawList[i].left = left;
	currentRedrawList[i].top = top;
	currentRedrawList[i].right = right;
	currentRedrawList[i].bottom = MIN<int32>(SCREEN_TEXTLIMIT_BOTTOM, bottom);

	assert(currentRedrawList[i].left <= currentRedrawList[i].right);
	assert(currentRedrawList[i].top <= currentRedrawList[i].bottom);

	numOfRedrawBox++;
}

void Redraw::addRedrawArea(const Common::Rect &rect) {
	addRedrawArea(rect.left, rect.top, rect.right, rect.bottom);
}

void Redraw::addRedrawArea(int32 left, int32 top, int32 right, int32 bottom) {
	if (left < SCREEN_TEXTLIMIT_LEFT) {
		left = SCREEN_TEXTLIMIT_LEFT;
	}
	if (top < SCREEN_TEXTLIMIT_TOP) {
		top = SCREEN_TEXTLIMIT_TOP;
	}
	if (right >= SCREEN_WIDTH) {
		right = SCREEN_TEXTLIMIT_RIGHT;
	}
	if (bottom >= SCREEN_HEIGHT) {
		bottom = SCREEN_TEXTLIMIT_BOTTOM;
	}

	if (left > right || top > bottom) {
		return;
	}

	nextRedrawList[currNumOfRedrawBox].left = left;
	nextRedrawList[currNumOfRedrawBox].top = top;
	nextRedrawList[currNumOfRedrawBox].right = right;
	nextRedrawList[currNumOfRedrawBox].bottom = bottom;

	currNumOfRedrawBox++;

	addRedrawCurrentArea(left, top, right, bottom);
}

void Redraw::moveNextAreas() {
	numOfRedrawBox = 0;

	for (int32 i = 0; i < currNumOfRedrawBox; i++) {
		addRedrawCurrentArea(nextRedrawList[i].left, nextRedrawList[i].top, nextRedrawList[i].right, nextRedrawList[i].bottom);
	}
}

void Redraw::flipRedrawAreas() {
	for (int32 i = 0; i < numOfRedrawBox; i++) { // redraw areas on screen
		_engine->copyBlockPhys(currentRedrawList[i].left, currentRedrawList[i].top, currentRedrawList[i].right, currentRedrawList[i].bottom);
	}

	numOfRedrawBox = 0;

	for (int32 i = 0; i < currNumOfRedrawBox; i++) { //setup the redraw areas for next display
		addRedrawCurrentArea(nextRedrawList[i].left, nextRedrawList[i].top, nextRedrawList[i].right, nextRedrawList[i].bottom);
	}
}

void Redraw::blitBackgroundAreas() {
	for (int32 i = 0; i < numOfRedrawBox; i++) {
		_engine->_interface->blitBox(currentRedrawList[i], _engine->workVideoBuffer, _engine->frontVideoBuffer);
	}
}

void Redraw::sortDrawingList(DrawListStruct *list, int32 listSize) {
	for (int32 i = 0; i < listSize - 1; i++) {
		for (int32 j = 0; j < listSize - 1 - i; j++) {
			if (list[j + 1].posValue < list[j].posValue) {
				DrawListStruct tempStruct;
				memcpy(&tempStruct, &list[j + 1], sizeof(DrawListStruct));
				memcpy(&list[j + 1], &list[j], sizeof(DrawListStruct));
				memcpy(&list[j], &tempStruct, sizeof(DrawListStruct));
			}
		}
	}
}

void Redraw::addOverlay(OverlayType type, int16 info0, int16 x, int16 y, int16 info1, OverlayPosType posType, int16 lifeTime) {
	for (int32 i = 0; i < ARRAYSIZE(overlayList); i++) {
		OverlayListStruct *overlay = &overlayList[i];
		if (overlay->info0 == -1) {
			overlay->type = type;
			overlay->info0 = info0;
			overlay->x = x;
			overlay->y = y;
			overlay->info1 = info1;
			overlay->posType = posType;
			overlay->lifeTime = _engine->lbaTime + lifeTime * 50;
			break;
		}
	}
}

void Redraw::updateOverlayTypePosition(int16 x1, int16 y1, int16 x2, int16 y2) {
	const int16 newX = x2 - x1;
	const int16 newY = y2 - y1;

	for (int32 i = 0; i < ARRAYSIZE(overlayList); i++) {
		OverlayListStruct *overlay = &overlayList[i];
		// TODO: this comparison is wrong - either posType or koNumber
		//if (overlay->type == OverlayPosType::koFollowActor) {
		if (overlay->posType == OverlayPosType::koFollowActor) {
			overlay->x = newX;
			overlay->y = newY;
		}
	}
}

int32 Redraw::fillActorDrawingList(bool bgRedraw) {
	int32 drawListPos = 0;
	for (int32 modelActorPos = 0; modelActorPos < _engine->_scene->sceneNumActors; modelActorPos++) {
		ActorStruct *actor = _engine->_scene->getActor(modelActorPos);
		actor->dynamicFlags.bIsVisible = 0; // reset visible state

		if (_engine->_grid->useCellingGrid != -1 && actor->y > _engine->_scene->sceneZones[_engine->_grid->cellingGridIdx].topRight.y) {
			continue;
		}
		// no redraw required
		if (actor->staticFlags.bIsBackgrounded && !bgRedraw) {
			// get actor position on screen
			_engine->_renderer->projectPositionOnScreen(actor->x - _engine->_grid->cameraX, actor->y - _engine->_grid->cameraY, actor->z - _engine->_grid->cameraZ);

			// check if actor is visible on screen, otherwise don't display it
			if (_engine->_renderer->projPosX > -50 && _engine->_renderer->projPosX < SCREEN_WIDTH + 40 && _engine->_renderer->projPosY > -30 && _engine->_renderer->projPosY < SCREEN_HEIGHT + 100) {
				actor->dynamicFlags.bIsVisible = 1;
			}
			continue;
		}
		// if the actor isn't set as hidden
		if (actor->entity == -1 || actor->staticFlags.bIsHidden) {
			continue;
		}
		// get actor position on screen
		_engine->_renderer->projectPositionOnScreen(actor->x - _engine->_grid->cameraX, actor->y - _engine->_grid->cameraY, actor->z - _engine->_grid->cameraZ);

		if ((actor->staticFlags.bUsesClipping && _engine->_renderer->projPosX > -112 && _engine->_renderer->projPosX < SCREEN_WIDTH + 112 && _engine->_renderer->projPosY > -50 && _engine->_renderer->projPosY < SCREEN_HEIGHT + 171) ||
		    ((!actor->staticFlags.bUsesClipping) && _engine->_renderer->projPosX > -50 && _engine->_renderer->projPosX < SCREEN_WIDTH + 40 && _engine->_renderer->projPosY > -30 && _engine->_renderer->projPosY < SCREEN_HEIGHT + 100)) {

			int32 tmpVal = actor->z + actor->x - _engine->_grid->cameraX - _engine->_grid->cameraZ;

			// if actor is above another actor
			if (actor->standOn != -1) {
				const ActorStruct *standOnActor = _engine->_scene->getActor(actor->standOn);
				tmpVal = standOnActor->x - _engine->_grid->cameraX + standOnActor->z - _engine->_grid->cameraZ + 2;
			}

			if (actor->staticFlags.bIsSpriteActor) {
				drawList[drawListPos].type = DrawListType::DrawActorSprites;
				drawList[drawListPos].actorIdx = modelActorPos;
				if (actor->staticFlags.bUsesClipping) {
					tmpVal = actor->lastX - _engine->_grid->cameraX + actor->lastZ - _engine->_grid->cameraZ;
				}
			} else {
				drawList[drawListPos].type = 0;
				drawList[drawListPos].actorIdx = modelActorPos;
			}

			drawList[drawListPos].posValue = tmpVal;

			drawListPos++;

			// if use shadows
			if (_engine->cfgfile.ShadowMode != 0 && !(actor->staticFlags.bDoesntCastShadow)) {
				if (actor->standOn != -1) {
					_engine->_actor->shadowX = actor->x;
					_engine->_actor->shadowY = actor->y - 1;
					_engine->_actor->shadowZ = actor->z;
				} else {
					_engine->_movements->getShadowPosition(actor->x, actor->y, actor->z);
				}

				tmpVal--;
				drawList[drawListPos].posValue = tmpVal; // save the shadow entry in the drawList
				drawList[drawListPos].type = DrawListType::DrawShadows;
				drawList[drawListPos].actorIdx = 0;
				drawList[drawListPos].x = _engine->_actor->shadowX;
				drawList[drawListPos].y = _engine->_actor->shadowY;
				drawList[drawListPos].z = _engine->_actor->shadowZ;
				drawList[drawListPos].offset = 2;
				drawListPos++;
			}
		}
	}
	return drawListPos;
}

int32 Redraw::fillExtraDrawingList(int32 drawListPos) {
	for (int32 i = 0; i < EXTRA_MAX_ENTRIES; i++) {
		ExtraListStruct *extra = &_engine->_extra->extraList[i];
		if (extra->info0 == -1) {
			continue;
		}
		if (extra->type & ExtraType::TIME_IN) {
			if (_engine->lbaTime - extra->spawnTime > 35) {
				extra->spawnTime = _engine->lbaTime;
				extra->type &= ~ExtraType::TIME_IN;
				_engine->_sound->playSample(Samples::ItemPopup, 1, extra->x, extra->y, extra->z);
			}
			continue;
		}
		if ((extra->type & ExtraType::TIME_OUT) || (extra->type & ExtraType::FLASH) || (extra->payload.lifeTime + extra->spawnTime - 150 < _engine->lbaTime) || (!((_engine->lbaTime + extra->spawnTime) & 8))) {
			_engine->_renderer->projectPositionOnScreen(extra->x - _engine->_grid->cameraX, extra->y - _engine->_grid->cameraY, extra->z - _engine->_grid->cameraZ);

			if (_engine->_renderer->projPosX > -50 && _engine->_renderer->projPosX < SCREEN_WIDTH + 40 && _engine->_renderer->projPosY > -30 && _engine->_renderer->projPosY < SCREEN_HEIGHT + 100) {
				drawList[drawListPos].posValue = extra->x - _engine->_grid->cameraX + extra->z - _engine->_grid->cameraZ;
				drawList[drawListPos].actorIdx = i;
				drawList[drawListPos].type = DrawListType::DrawExtras;
				drawListPos++;

				if (_engine->cfgfile.ShadowMode == 2 && !(extra->info0 & 0x8000)) {
					_engine->_movements->getShadowPosition(extra->x, extra->y, extra->z);

					drawList[drawListPos].posValue = extra->x - _engine->_grid->cameraX + extra->z - _engine->_grid->cameraZ - 1;
					drawList[drawListPos].actorIdx = 0;
					drawList[drawListPos].type = DrawListType::DrawShadows;
					drawList[drawListPos].x = _engine->_actor->shadowX;
					drawList[drawListPos].y = _engine->_actor->shadowY;
					drawList[drawListPos].z = _engine->_actor->shadowZ;
					drawList[drawListPos].offset = 0;
					drawListPos++;
				}
			}
		}
	}
	return drawListPos;
}

void Redraw::processDrawListShadows(const DrawListStruct &drawCmd) {
	// get actor position on screen
	_engine->_renderer->projectPositionOnScreen(drawCmd.x - _engine->_grid->cameraX, drawCmd.y - _engine->_grid->cameraY, drawCmd.z - _engine->_grid->cameraZ);

	int32 spriteWidth, spriteHeight;
	_engine->_grid->getSpriteSize(drawCmd.offset, &spriteWidth, &spriteHeight, _engine->_resources->spriteShadowPtr);

	// calculate sprite size and position on screen
	renderRect.left = _engine->_renderer->projPosX - (spriteWidth / 2);
	renderRect.top = _engine->_renderer->projPosY - (spriteHeight / 2);
	renderRect.right = _engine->_renderer->projPosX + (spriteWidth / 2);
	renderRect.bottom = _engine->_renderer->projPosY + (spriteHeight / 2);

	_engine->_interface->setClip(renderRect);

	if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
		_engine->_grid->drawSprite(drawCmd.offset, renderRect.left, renderRect.top, _engine->_resources->spriteShadowPtr);
	}

	const int32 tmpX = (drawCmd.x + 0x100) >> 9;
	const int32 tmpY = drawCmd.y >> 8;
	const int32 tmpZ = (drawCmd.z + 0x100) >> 9;

	_engine->_grid->drawOverModelActor(tmpX, tmpY, tmpZ);

	addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);

	// show clipping area
	//drawBox(_engine->_renderer->renderRect.left, _engine->_renderer->renderRect.top, _engine->_renderer->renderRect.right, _engine->_renderer->renderRect.bottom);
}

void Redraw::processDrawListActors(const DrawListStruct &drawCmd, bool bgRedraw) {
	int32 actorIdx = drawCmd.actorIdx;
	ActorStruct *actor2 = _engine->_scene->getActor(actorIdx);
	_engine->_animations->setModelAnimation(actor2->animPosition, _engine->_resources->animTable[actor2->previousAnimIdx], _engine->_actor->bodyTable[actor2->entity], &actor2->animTimerData);

	const int32 x = actor2->x - _engine->_grid->cameraX;
	const int32 y = actor2->y - _engine->_grid->cameraY;
	const int32 z = actor2->z - _engine->_grid->cameraZ;
	if (!_engine->_renderer->renderIsoModel(x, y, z, 0, actor2->angle, 0, _engine->_actor->bodyTable[actor2->entity])) {
		return;
	}

	if (renderRect.left < SCREEN_TEXTLIMIT_LEFT) {
		renderRect.left = SCREEN_TEXTLIMIT_LEFT;
	}

	if (renderRect.top < SCREEN_TEXTLIMIT_TOP) {
		renderRect.top = SCREEN_TEXTLIMIT_TOP;
	}

	if (renderRect.right >= SCREEN_WIDTH) {
		renderRect.right = SCREEN_TEXTLIMIT_RIGHT;
	}

	if (renderRect.bottom >= SCREEN_HEIGHT) {
		renderRect.bottom = SCREEN_TEXTLIMIT_BOTTOM;
	}

	_engine->_interface->setClip(renderRect);

	if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
		actor2->dynamicFlags.bIsVisible = 1;

		const int32 tempX = (actor2->x + 0x100) >> 9;
		int32 tempY = actor2->y >> 8;
		const int32 tempZ = (actor2->z + 0x100) >> 9;
		if (actor2->brickShape() != ShapeType::kNone) {
			tempY++;
		}

		_engine->_grid->drawOverModelActor(tempX, tempY, tempZ);

		if (_engine->_actor->cropBottomScreen) {
			renderRect.bottom = _engine->_interface->textWindow.bottom = _engine->_actor->cropBottomScreen + 10;
		}

		const Common::Rect rect(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);
		addRedrawArea(rect);

		if (actor2->staticFlags.bIsBackgrounded && bgRedraw) {
			_engine->_interface->blitBox(rect, _engine->frontVideoBuffer, _engine->workVideoBuffer);
		}
	}
}

void Redraw::processDrawListActorSprites(const DrawListStruct &drawCmd, bool bgRedraw) {
	int32 actorIdx = drawCmd.actorIdx;
	ActorStruct *actor2 = _engine->_scene->getActor(actorIdx);
	const uint8 *spritePtr = _engine->_resources->spriteTable[actor2->entity];

	// get actor position on screen
	_engine->_renderer->projectPositionOnScreen(actor2->x - _engine->_grid->cameraX, actor2->y - _engine->_grid->cameraY, actor2->z - _engine->_grid->cameraZ);

	int32 spriteWidth, spriteHeight;
	_engine->_grid->getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

	// calculate sprite position on screen
	Common::MemoryReadStream stream(_engine->_resources->spriteBoundingBoxPtr, _engine->_resources->spriteBoundingBoxSize);
	stream.seek(actor2->entity * 16);
	renderRect.left = _engine->_renderer->projPosX + stream.readSint16LE();
	renderRect.top = _engine->_renderer->projPosY + stream.readSint16LE();
	renderRect.right = renderRect.left + spriteWidth;
	renderRect.bottom = renderRect.top + spriteHeight;

	if (actor2->staticFlags.bUsesClipping) {
		const Common::Rect rect(_engine->_renderer->projPosXScreen + actor2->cropLeft, _engine->_renderer->projPosYScreen + actor2->cropTop, _engine->_renderer->projPosXScreen + actor2->cropRight, _engine->_renderer->projPosYScreen + actor2->cropBottom);
		_engine->_interface->setClip(rect);
	} else {
		_engine->_interface->setClip(renderRect);
	}

	if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
		_engine->_grid->drawSprite(0, renderRect.left, renderRect.top, spritePtr);

		actor2->dynamicFlags.bIsVisible = 1;

		if (actor2->staticFlags.bUsesClipping) {
			const int32 tmpX = (actor2->lastX + 0x100) >> 9;
			const int32 tmpY = actor2->lastY >> 8;
			const int32 tmpZ = (actor2->lastZ + 0x100) >> 9;
			_engine->_grid->drawOverSpriteActor(tmpX, tmpY, tmpZ);
		} else {
			const int32 tmpX = (actor2->x + actor2->boudingBox.x.topRight + 0x100) >> 9;
			int32 tmpY = actor2->y >> 8;
			const int32 tmpZ = (actor2->z + actor2->boudingBox.z.topRight + 0x100) >> 9;
			if (actor2->brickShape() != ShapeType::kNone) {
				tmpY++;
			}

			_engine->_grid->drawOverSpriteActor(tmpX, tmpY, tmpZ);
		}

		addRedrawArea(_engine->_interface->textWindow);

		if (actor2->staticFlags.bIsBackgrounded && bgRedraw) {
			_engine->_interface->blitBox(_engine->_interface->textWindow, _engine->frontVideoBuffer, _engine->workVideoBuffer);
		}

		// show clipping area
		//drawBox(renderRect.left, renderRect.top, renderRect.right, renderRect.bottom);
	}
}

void Redraw::processDrawListExtras(const DrawListStruct &drawCmd) {
	int32 actorIdx = drawCmd.actorIdx;
	ExtraListStruct *extra = &_engine->_extra->extraList[actorIdx];

	_engine->_renderer->projectPositionOnScreen(extra->x - _engine->_grid->cameraX, extra->y - _engine->_grid->cameraY, extra->z - _engine->_grid->cameraZ);

	if (extra->info0 & 0x8000) {
		_engine->_extra->drawExtraSpecial(actorIdx, _engine->_renderer->projPosX, _engine->_renderer->projPosY);
	} else {
		int32 spriteWidth, spriteHeight;
		_engine->_grid->getSpriteSize(0, &spriteWidth, &spriteHeight, _engine->_resources->spriteTable[extra->info0]);

		// calculate sprite position on screen
		Common::MemoryReadStream stream(_engine->_resources->spriteBoundingBoxPtr, _engine->_resources->spriteBoundingBoxSize);
		stream.seek(extra->info0 * 16);
		renderRect.left = _engine->_renderer->projPosX + stream.readSint16LE();
		renderRect.top = _engine->_renderer->projPosY + stream.readSint16LE();
		renderRect.right = renderRect.left + spriteWidth;
		renderRect.bottom = renderRect.top + spriteHeight;

		_engine->_grid->drawSprite(0, renderRect.left, renderRect.top, _engine->_resources->spriteTable[extra->info0]);
	}

	_engine->_interface->setClip(renderRect);

	if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
		const int32 tmpX = (drawCmd.x + 0x100) >> 9;
		const int32 tmpY = drawCmd.y >> 8;
		const int32 tmpZ = (drawCmd.z + 0x100) >> 9;

		_engine->_grid->drawOverModelActor(tmpX, tmpY, tmpZ);
		addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);

		// show clipping area
		//drawBox(renderRect);
	}
}

void Redraw::processDrawList(int32 drawListPos, bool bgRedraw) {
	for (int32 pos = 0; pos < drawListPos; ++pos) {
		const DrawListStruct &drawCmd = drawList[pos];
		const uint32 flags = drawCmd.type;
		// Drawing actors
		if (flags < DrawListType::DrawShadows) {
			if (flags == 0) {
				processDrawListActors(drawCmd, bgRedraw);
			}
		}
		// Drawing shadows
		else if (flags == DrawListType::DrawShadows && !_engine->_actor->cropBottomScreen) {
			processDrawListShadows(drawCmd);
		}
		// Drawing unknown
		else if (flags < DrawListType::DrawActorSprites) {
			// TODO reverse this part of the code
			warning("Not yet reversed part of the rendering code");
		}
		// Drawing sprite actors, doors and entities
		else if (flags == DrawListType::DrawActorSprites) {
			processDrawListActorSprites(drawCmd, bgRedraw);
		}
		// Drawing extras
		else if (flags == DrawListType::DrawExtras) {
			processDrawListExtras(drawCmd);
		}

		_engine->_interface->resetClip();
	}
}

void Redraw::renderOverlays() {
	for (int32 i = 0; i < OVERLAY_MAX_ENTRIES; i++) {
		OverlayListStruct *overlay = &overlayList[i];
		if (overlay->info0 != -1) {
			// process position overlay
			switch (overlay->posType) {
			case OverlayPosType::koNormal:
				if (_engine->lbaTime >= overlay->lifeTime) {
					overlay->info0 = -1;
					continue;
				}
				break;
			case OverlayPosType::koFollowActor: {
				ActorStruct *actor2 = _engine->_scene->getActor(overlay->info1);

				_engine->_renderer->projectPositionOnScreen(actor2->x - _engine->_grid->cameraX, actor2->y + actor2->boudingBox.y.topRight - _engine->_grid->cameraY, actor2->z - _engine->_grid->cameraZ);

				overlay->x = _engine->_renderer->projPosX;
				overlay->y = _engine->_renderer->projPosY;

				if (_engine->lbaTime >= overlay->lifeTime) {
					overlay->info0 = -1;
					continue;
				}
				break;
			}
			}

			// process overlay type
			switch (overlay->type) {
			case OverlayType::koSprite: {
				const uint8 *spritePtr = _engine->_resources->spriteTable[overlay->info0];

				int32 spriteWidth, spriteHeight;
				_engine->_grid->getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

				Common::MemoryReadStream stream(_engine->_resources->spriteBoundingBoxPtr, _engine->_resources->spriteBoundingBoxSize);
				stream.seek(overlay->info0 * 16);
				const int16 offsetX = stream.readSint16LE();
				const int16 offsetY = stream.readSint16LE();

				renderRect.left = offsetX + overlay->x;
				renderRect.top = offsetY + overlay->y;
				renderRect.right = renderRect.left + spriteWidth;
				renderRect.bottom = renderRect.top + spriteHeight;

				_engine->_grid->drawSprite(0, renderRect.left, renderRect.top, spritePtr);

				if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
					addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);
				}
				break;
			}
			case OverlayType::koNumber: {
				char text[10];
				snprintf(text, sizeof(text), "%d", overlay->info0);

				const int32 textLength = _engine->_text->getTextSize(text);
				const int32 textHeight = 48;

				renderRect.left = overlay->x - (textLength / 2);
				renderRect.top = overlay->y - 24;
				renderRect.right = overlay->x + (textLength / 2);
				renderRect.bottom = overlay->y + textHeight;

				_engine->_interface->setClip(renderRect);

				_engine->_text->setFontColor(overlay->info1);

				_engine->_text->drawText(renderRect.left, renderRect.top, text);

				if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
					addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);
				}
				break;
			}
			case OverlayType::koNumberRange: {
				const int32 range = _engine->_collision->getAverageValue(overlay->info1, overlay->info0, 100, overlay->lifeTime - _engine->lbaTime - 50);

				char text[10];
				sprintf(text, "%d", range);

				const int32 textLength = _engine->_text->getTextSize(text);
				const int32 textHeight = 48;

				renderRect.left = overlay->x - (textLength / 2);
				renderRect.top = overlay->y - 24;
				renderRect.right = overlay->x + (textLength / 2);
				renderRect.bottom = overlay->y + textHeight;

				_engine->_interface->setClip(renderRect);

				_engine->_text->setFontColor(155);

				_engine->_text->drawText(renderRect.left, renderRect.top, text);

				if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
					addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);
				}
				break;
			}
			case OverlayType::koInventoryItem: {
				const int32 item = overlay->info0;
				const Common::Rect rect(10, 10, 69, 69);

				_engine->_interface->drawSplittedBox(rect, 0);
				_engine->_interface->setClip(rect);

				Renderer::prepareIsoModel(_engine->_resources->inventoryTable[item]);
				_engine->_renderer->setCameraPosition(40, 40, 128, 200, 200);
				_engine->_renderer->setCameraAngle(0, 0, 0, 60, 0, 0, 16000);

				overlayRotation += 1; // overlayRotation += 8;

				_engine->_renderer->renderIsoModel(0, 0, 0, 0, overlayRotation, 0, _engine->_resources->inventoryTable[item]);
				_engine->_menu->drawBox(rect);
				addRedrawArea(rect);
				_engine->_gameState->initEngineProjections();
				break;
			}
			case OverlayType::koText: {
				char text[256];
				_engine->_text->getMenuText(overlay->info0, text, sizeof(text));

				const int32 textLength = _engine->_text->getTextSize(text);
				const int32 textHeight = 48;

				renderRect.left = overlay->x - (textLength / 2);
				renderRect.top = overlay->y - 24;
				renderRect.right = overlay->x + (textLength / 2);
				renderRect.bottom = overlay->y + textHeight;

				if (renderRect.left < SCREEN_TEXTLIMIT_LEFT) {
					renderRect.left = SCREEN_TEXTLIMIT_LEFT;
				}

				if (renderRect.top < SCREEN_TEXTLIMIT_TOP) {
					renderRect.top = SCREEN_TEXTLIMIT_TOP;
				}

				if (renderRect.right > SCREEN_TEXTLIMIT_RIGHT) {
					renderRect.right = SCREEN_TEXTLIMIT_RIGHT;
				}

				if (renderRect.bottom > SCREEN_TEXTLIMIT_BOTTOM) {
					renderRect.bottom = SCREEN_TEXTLIMIT_BOTTOM;
				}

				_engine->_interface->setClip(renderRect);

				_engine->_text->setFontColor(_engine->_scene->getActor(overlay->info1)->talkColor);

				_engine->_text->drawText(renderRect.left, renderRect.top, text);

				if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
					addRedrawArea(_engine->_interface->textWindow.left, _engine->_interface->textWindow.top, renderRect.right, renderRect.bottom);
				}
				break;
			}
			}
		}
	}
}

void Redraw::redrawEngineActions(bool bgRedraw) {
	int16 tmp_projPosX = _engine->_renderer->projPosXScreen;
	int16 tmp_projPosY = _engine->_renderer->projPosYScreen;

	_engine->_interface->resetClip();

	if (bgRedraw) {
		_engine->freezeTime();
		if (_engine->_scene->needChangeScene != -1 && _engine->_scene->needChangeScene != -2) {
			_engine->_screens->fadeOut(_engine->_screens->paletteRGBA);
		}
		_engine->_screens->clearScreen();
		_engine->_grid->redrawGrid();
		updateOverlayTypePosition(tmp_projPosX, tmp_projPosY, _engine->_renderer->projPosXScreen, _engine->_renderer->projPosYScreen);
		_engine->_screens->copyScreen(_engine->frontVideoBuffer, _engine->workVideoBuffer);

		if (_engine->_scene->needChangeScene != -1 && _engine->_scene->needChangeScene != -2) {
			_engine->_screens->fadeIn(_engine->_screens->paletteRGBA);
			_engine->setPalette(_engine->_screens->paletteRGBA);
		}
	} else {
		blitBackgroundAreas();
	}

	int32 drawListPos = fillActorDrawingList(bgRedraw);
	drawListPos = fillExtraDrawingList(drawListPos);
	sortDrawingList(drawList, drawListPos);

	currNumOfRedrawBox = 0;
	processDrawList(drawListPos, bgRedraw);

	if (_engine->cfgfile.Debug) {
		_engine->_debugScene->displayZones();
	}

	renderOverlays();

	_engine->_interface->resetClip();

	// make celling grid fade
	// need to be here to fade after drawing all actors in scene
	if (_engine->_scene->needChangeScene == -2) {
		_engine->crossFade(_engine->frontVideoBuffer, _engine->_screens->paletteRGBA);
		_engine->_scene->needChangeScene = -1;
	}

	if (bgRedraw) {
		_engine->flip();
		moveNextAreas();
		_engine->unfreezeTime();
	} else {
		flipRedrawAreas();
	}

	if (_engine->_screens->lockPalette) {
		if (_engine->_screens->useAlternatePalette) {
			_engine->_screens->fadeToPal(_engine->_screens->paletteRGBA);
		} else {
			_engine->_screens->fadeToPal(_engine->_screens->mainPaletteRGBA);
		}
		_engine->_screens->lockPalette = false;
	}

	if (_engine->zoomScreen) {
		zoomScreenScale();
	}
}

void Redraw::drawBubble(int32 actorIdx) {
	ActorStruct *actor = _engine->_scene->getActor(actorIdx);

	// get actor position on screen
	_engine->_renderer->projectPositionOnScreen(actor->x - _engine->_grid->cameraX, actor->y + actor->boudingBox.y.topRight - _engine->_grid->cameraY, actor->z - _engine->_grid->cameraZ);

	if (actorIdx != bubbleActor) {
		bubbleSpriteIndex = bubbleSpriteIndex ^ 1;
		bubbleActor = actorIdx;
	}

	const uint8 *spritePtr = _engine->_resources->spriteTable[bubbleSpriteIndex];
	int32 spriteWidth, spriteHeight;
	_engine->_grid->getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

	// calculate sprite position on screen
	if (bubbleSpriteIndex == SPRITEHQR_DIAG_BUBBLE_RIGHT) {
		renderRect.left = _engine->_renderer->projPosX + 10;
	} else {
		renderRect.left = _engine->_renderer->projPosX - 10 - spriteWidth;
	}
	renderRect.top = _engine->_renderer->projPosY - 20;
	renderRect.right = spriteWidth + renderRect.left - 1;
	renderRect.bottom = spriteHeight + renderRect.top - 1;

	_engine->_interface->setClip(renderRect);

	_engine->_grid->drawSprite(0, renderRect.left, renderRect.top, spritePtr);
	if (_engine->_interface->textWindow.left <= _engine->_interface->textWindow.right && _engine->_interface->textWindow.top <= _engine->_interface->textWindow.bottom) {
		_engine->copyBlockPhys(renderRect);
	}

	_engine->_interface->resetClip();
}

void Redraw::zoomScreenScale() {
#if 0
	// TODO: this is broken
	Graphics::ManagedSurface zoomWorkVideoBuffer;
	zoomWorkVideoBuffer.copyFrom(_engine->workVideoBuffer);

	const uint8 *src = (const uint8 *)zoomWorkVideoBuffer.getPixels();
	uint8 *dest = (uint8 *)_engine->workVideoBuffer.getPixels();
	for (int h = 0; h < zoomWorkVideoBuffer.h; h++) {
		for (int w = 0; w < zoomWorkVideoBuffer.w; w++) {
			*dest++ = *src;
			*dest++ = *src++;
		}
		//memcpy(dest, dest - SCREEN_WIDTH, SCREEN_WIDTH);
		//dest += SCREEN_WIDTH;
	}
	_engine->_screens->copyScreen(_engine->workVideoBuffer, _engine->frontVideoBuffer);
	zoomWorkVideoBuffer.free();
#endif
}

} // namespace TwinE