scummvm/engines/twine/redraw.cpp

/** @file redraw.cpp
	@brief
	This file contains engine redraw actions routines

	TwinEngine: a Little Big Adventure engine

	Copyright (C) 2013 The TwinEngine team
	Copyright (C) 2008-2013 Prequengine team
	Copyright (C) 2002-2007 The TwinEngine team

	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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "redraw.h"
#include "sdlengine.h"
#include "lbaengine.h"
#include "renderer.h"
#include "interface.h"
#include "screens.h"
#include "grid.h"
#include "scene.h"
#include "actor.h"
#include "hqrdepack.h"
#include "resources.h"
#include "menu.h"
#include "animations.h"
#include "keyboard.h"
#include "movements.h"
#include "text.h"
#include "collision.h"
#include "sound.h"

#ifdef GAMEMOD
#include "debug.scene.h"
#endif

typedef struct RedrawStruct {
	uint16 left;
	uint16 top;
	uint16 right;
	uint16 bottom;
} RedrawStruct;

RedrawStruct currentRedrawList[300];
RedrawStruct nextRedrawList[300];

typedef struct DrawListStruct {
	int16  posValue;
	uint16 index; // field_2
	uint16 X;
	uint16 Y;
	uint16 Z;
	uint16 field_A;
	uint16 field_C;
	uint16 field_E;
	uint16 field_10;
} DrawListStruct;

/** Draw list array to grab the necessary */
DrawListStruct drawList[150];

int16 overlayRotation = 0;

/** Add a certain region to the current redraw list array
	@param left start width to redraw the region
	@param top start height to redraw the region
	@param right end width to redraw the region
	@param bottom end height to redraw the region */
void addRedrawCurrentArea(int32 left, int32 top, int32 right, int32 bottom) {
	int32 area;
	int32 i = 0;
	int32 leftValue;
	int32 rightValue;
	int32 topValue;
	int32 bottomValue;

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

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

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

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

		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 = bottomValue;

			if (currentRedrawList[i].bottom >= SCREEN_WIDTH)
				currentRedrawList[i].bottom = SCREEN_TEXTLIMIT_BOTTOM;
			return;
		}

		i++;
	};

	currentRedrawList[i].left = left;
	currentRedrawList[i].top = top;
	currentRedrawList[i].right = right;
	currentRedrawList[i].bottom = bottom;

	if (currentRedrawList[i].bottom >= SCREEN_WIDTH)
		currentRedrawList[i].bottom = SCREEN_TEXTLIMIT_BOTTOM;

	numOfRedrawBox++;
}

/** Add a certain region to redraw list array
	@param left start width to redraw the region
	@param top start height to redraw the region
	@param right end width to redraw the region
	@param bottom end height to redraw the region */
void addRedrawArea(int32 left, int32 top, int32 right, int32 bottom) {
	if (left < 0)
		left = 0;
	if (top < 0)
		top = 0;
	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);
}

/** Move next regions to the current redraw list */
void moveNextAreas() {
	int32 i;

	numOfRedrawBox = 0;

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

/** Flip currentRedrawList regions in the screen

	This only updates small areas in the screen so few CPU processor is used */
void flipRedrawAreas() {
	int32 i;

	for (i = 0; i < numOfRedrawBox; i++) { // redraw areas on screen
		copyBlockPhys(currentRedrawList[i].left, currentRedrawList[i].top, currentRedrawList[i].right, currentRedrawList[i].bottom);
	}

	numOfRedrawBox = 0;

	for (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);
	}
}

/** Blit/Update all screen regions in the currentRedrawList */
void blitBackgroundAreas() {
	int32 i;
	RedrawStruct* currentArea;
	currentArea = currentRedrawList;

	for (i = 0; i < numOfRedrawBox; i++) {
		blitBox(currentArea->left, currentArea->top, currentArea->right, currentArea->bottom, (int8 *) workVideoBuffer, currentArea->left, currentArea->top, (int8 *) frontVideoBuffer);
		currentArea++;
	}
}

/** Sort drawing list struct ordered as the first objects appear in the top left corner of the screen
	@param list drawing list variable which contains information of the drawing objects
	@param listSize number of drawing objects in the list */
void sortDrawingList(DrawListStruct *list, int32 listSize) {
	int32 i;
	int32 j;

	DrawListStruct tempStruct;

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

/** */
void addOverlay(int16 type, int16 info0, int16 X, int16 Y, int16 info1, int16 posType, int16 lifeTime) {
	int32 i;
	for (i = 0; i < OVERLAY_MAX_ENTRIES; 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 = lbaTime + lifeTime * 50;
			return;
		}
	}
}

/** */
void updateOverlayTypePosition(int16 X1, int16 Y1, int16 X2, int16 Y2) {
	int32 i;
	int16 newX, newY;

	newX = X2 - X1;
	newY = Y2 - Y1;

	for (i = 0; i < OVERLAY_MAX_ENTRIES; i++) {
		OverlayListStruct *overlay = &overlayList[i];
		if (overlay->type == koFollowActor) {
			overlay->X = newX;
			overlay->Y = newY;
		}
	}
}

/** This is responsible for the entire game screen redraw
	@param bgRedraw true if we want to redraw background grid, false if we want to update certain screen areas */
void redrawEngineActions(int32 bgRedraw) { // fullRedraw
	int16 tmpProjPosX;
	int16 tmpProjPosY;
	int32 i;
	int32 tmpVal;
	int32 modelActorPos;  // arg_1A
	int32 spriteActorPos; // top6
	int32 shadowActorPos; // top2
	int32 drawListPos;    // a12
	ActorStruct *actor;

	tmpProjPosX = projPosXScreen;
	tmpProjPosY = projPosYScreen;

	resetClip();

	if (bgRedraw) {
		freezeTime();
		if (needChangeScene != -1 && needChangeScene != -2)
			fadeOut(paletteRGBA);
		clearScreen();
		redrawGrid();
		updateOverlayTypePosition(tmpProjPosX, tmpProjPosY, projPosXScreen, projPosYScreen);
		copyScreen(frontVideoBuffer, workVideoBuffer);

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

	// first loop

	modelActorPos = 0;
	drawListPos = 0;
	spriteActorPos = 0x1000;
	shadowActorPos = 0x0C00;

	// Process actors drawing list
	for (modelActorPos = 0; modelActorPos < sceneNumActors; modelActorPos++, spriteActorPos++, shadowActorPos++) {
		actor = &sceneActors[modelActorPos];
		actor->dynamicFlags.bIsVisible = 0; // reset visible state

		if ((useCellingGrid == -1) || actor->Y <= (*(int16 *)(cellingGridIdx*24 + (int8 *)sceneZones + 8))) {
			// no redraw required
			if (actor->staticFlags.bIsBackgrounded && bgRedraw == 0) {
				// get actor position on screen
				projectPositionOnScreen(actor->X - cameraX, actor->Y - cameraY, actor->Z - cameraZ);

				// check if actor is visible on screen, otherwise don't display it
				if (projPosX > -50 && projPosX < 680 && projPosY > -30 && projPosY < 580) {
					actor->dynamicFlags.bIsVisible = 1;
				}
			} else {
				// if the actor isn't set as hidden
				if (actor->entity != -1 && !(actor->staticFlags.bIsHidden)) {
					// get actor position on screen
					projectPositionOnScreen(actor->X - cameraX, actor->Y - cameraY, actor->Z - cameraZ);

					if ((actor->staticFlags.bUsesClipping && projPosX > -112 && projPosX < 752 && projPosY > -50 && projPosY < 651) ||
					   ((!actor->staticFlags.bUsesClipping) && projPosX > -50 && projPosX < 680 && projPosY > -30 && projPosY < 580)) {

						tmpVal = actor->Z + actor->X - cameraX - cameraZ;

						// if actor is above another actor
						if (actor->standOn != -1) {
							tmpVal = sceneActors[actor->standOn].X - cameraX + sceneActors[actor->standOn].Z - cameraZ + 2;
						}

						if (actor->staticFlags.bIsSpriteActor) {
							drawList[drawListPos].index = spriteActorPos; // > 0x1000
							if (actor->staticFlags.bUsesClipping) {
								tmpVal = actor->lastX - cameraX + actor->lastZ - cameraZ;
							}
						} else {
							drawList[drawListPos].index = modelActorPos;
						}

						drawList[drawListPos].posValue = tmpVal;

						drawListPos++;

						// if use shadows
						if (cfgfile.ShadowMode != 0 && !(actor->staticFlags.bDoesntCastShadow)) {
							if (actor->standOn != -1) {
								shadowX = actor->X;
								shadowY = actor->Y - 1;
								shadowZ = actor->Z;
							} else {
								getShadowPosition(actor->X, actor->Y, actor->Z);
							}

							tmpVal--;
							drawList[drawListPos].posValue = tmpVal; // save the shadow entry in the drawList
							drawList[drawListPos].index = 0xC00;     // shadowActorPos
							drawList[drawListPos].X = shadowX;
							drawList[drawListPos].Y = shadowY;
							drawList[drawListPos].Z = shadowZ;
							drawList[drawListPos].field_A = 2;
							drawListPos++;
						}
					}
				}
			}
		}
	}

	// second loop
	for (i = 0; i < EXTRA_MAX_ENTRIES; i++) {
		ExtraListStruct *extra = &extraList[i];
		if (extra->info0 != -1) {
			if (extra->type & 0x400) {
				if (lbaTime - extra->lifeTime > 35) {
					extra->lifeTime = lbaTime;
					extra->type &= 0xFBFF;
					// FIXME make constant for sample index
					playSample(11, 0x1000, 1, extra->X, extra->Y, extra->Z, -1);
				}
			} else {
				if ((extra->type & 1) || (extra->type & 0x40) || (extra->actorIdx + extra->lifeTime - 150 < lbaTime) || (!((lbaTime + extra->lifeTime) & 8))) {
					projectPositionOnScreen(extra->X - cameraX, extra->Y - cameraY, extra->Z - cameraZ);

					if (projPosX > -50 && projPosX < 680 && projPosY > -30 && projPosY < 580) {
						drawList[drawListPos].posValue = extra->X - cameraX + extra->Z - cameraZ;
						drawList[drawListPos].index = 0x1800 + i;
						drawListPos++;

						if (cfgfile.ShadowMode == 2 && !(extra->info0 & 0x8000)) {
							getShadowPosition(extra->X, extra->Y, extra->Z);

							drawList[drawListPos].posValue = extra->X - cameraX + extra->Z - cameraZ - 1;
							drawList[drawListPos].index = 0xC00;
							drawList[drawListPos].X = shadowX;
							drawList[drawListPos].Y = shadowY;
							drawList[drawListPos].Z = shadowZ;
							drawList[drawListPos].field_A = 0;
							drawListPos++;
						}
					}
				}
			}
		}
	}

	sortDrawingList(drawList, drawListPos);

	currNumOfRedrawBox = 0;
	// if has something to draw
	if (drawListPos > 0) {
		int32 pos = 0;
		uint32 flags;
		int32 actorIdx;
		ActorStruct *actor;

		do {
			actorIdx = drawList[pos].index & 0x3FF;
			actor = &sceneActors[actorIdx];
			flags = ((uint32) drawList[pos].index) & 0xFC00;

			// Drawing actors
			if (flags < 0xC00) {
				if (!flags) {
					setModelAnimation(actor->animPosition, animTable[actor->previousAnimIdx], bodyTable[actor->entity], &actor->animTimerData);

					if (!renderIsoModel(actor->X - cameraX, actor->Y - cameraY, actor->Z - cameraZ, 0, actor->angle, 0, bodyTable[actor->entity])) {
						if (renderLeft < 0)
							renderLeft = SCREEN_TEXTLIMIT_LEFT;

						if (renderTop < 0)
							renderTop = SCREEN_TEXTLIMIT_TOP;

						if (renderRight >= SCREEN_WIDTH)
							renderRight = SCREEN_TEXTLIMIT_RIGHT;

						if (renderBottom >= SCREEN_HEIGHT)
							renderBottom = SCREEN_TEXTLIMIT_BOTTOM;

						setClip(renderLeft, renderTop, renderRight, renderBottom);

						if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
							int32 tempX;
							int32 tempY;
							int32 tempZ;

							actor->dynamicFlags.bIsVisible = 1;

							tempX = (actor->X + 0x100) >> 9;
							tempY = actor->Y >> 8;

							if (actor->brickShape & 0x7F)
								tempY++;

							tempZ = (actor->Z + 0x100) >> 9;

							drawOverModelActor(tempX, tempY, tempZ);

							if(cropBottomScreen) {
								renderBottom = textWindowBottom = cropBottomScreen + 10;
							}

							addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);

							if (actor->staticFlags.bIsBackgrounded && bgRedraw == 1) {
								blitBox(textWindowLeft, textWindowTop, renderRight, renderBottom, (int8 *) frontVideoBuffer, textWindowLeft, textWindowTop, (int8 *) workVideoBuffer);
							}
						}
					}
				}
			}
			// Drawing shadows
			else if (flags == 0xC00 && !cropBottomScreen) {
				int32 spriteWidth, spriteHeight, tmpX, tmpY, tmpZ;
				DrawListStruct shadow =	drawList[pos];

				// get actor position on screen
				projectPositionOnScreen(shadow.X - cameraX, shadow.Y - cameraY, shadow.Z - cameraZ);

				getSpriteSize(shadow.field_A, &spriteWidth, &spriteHeight, spriteShadowPtr);

				// calculate sprite size and position on screen
				renderLeft   = projPosX - (spriteWidth / 2);
				renderTop    = projPosY - (spriteHeight / 2);
				renderRight  = projPosX + (spriteWidth / 2);
				renderBottom = projPosY + (spriteHeight / 2);

				setClip(renderLeft, renderTop, renderRight, renderBottom);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					drawSprite(shadow.field_A, renderLeft, renderTop, spriteShadowPtr);
				}

				tmpX = (shadow.X + 0x100) >> 9;
				tmpY = shadow.Y >> 8;
				tmpZ = (shadow.Z + 0x100) >> 9;

				drawOverModelActor(tmpX, tmpY, tmpZ);

				addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);

				// show clipping area
				//drawBox(renderLeft, renderTop, renderRight, renderBottom);
			}
			// Drawing unknown
			else if (flags < 0x1000) {
				// TODO reverse this part of the code
			}
			// Drawing sprite actors
			else if (flags == 0x1000) {
				int32 spriteWidth, spriteHeight;
				uint8 *spritePtr = spriteTable[actor->entity];

				// get actor position on screen
				projectPositionOnScreen(actor->X - cameraX, actor->Y - cameraY, actor->Z - cameraZ);

				getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

				// calculate sprite position on screen
				renderLeft = projPosX +  *((int16 *)(spriteBoundingBoxPtr + (actor->entity * 16)));
				renderTop = projPosY + *((int16 *)(spriteBoundingBoxPtr + (actor->entity * 16) + 2));
				renderRight = renderLeft + spriteWidth;
				renderBottom = renderTop + spriteHeight;

				if (actor->staticFlags.bUsesClipping) {
					setClip(projPosXScreen + actor->info0, projPosYScreen + actor->info1, projPosXScreen + actor->info2, projPosYScreen + actor->info3);
				} else {
					setClip(renderLeft, renderTop, renderRight, renderBottom);
				}

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					drawSprite(0, renderLeft, renderTop, spritePtr);

					actor->dynamicFlags.bIsVisible = 1;

					if (actor->staticFlags.bUsesClipping) {
						drawOverSpriteActor((actor->lastX + 0x100) >> 9, actor->lastY >> 8, (actor->lastZ + 0x100) >> 9);
					} else {
						int32 tmpX, tmpY, tmpZ;

						tmpX = (actor->X + actor->boudingBox.X.topRight + 0x100) >> 9;
						tmpY = actor->Y >> 8;
						if (actor->brickShape & 0x7F) {
							tmpY++;
						}
						tmpZ = (actor->Z + actor->boudingBox.Z.topRight + 0x100) >> 9;

						drawOverSpriteActor(tmpX, tmpY, tmpZ);
					}

					addRedrawArea(textWindowLeft, textWindowTop, textWindowRight, textWindowBottom);

					if (actor->staticFlags.bIsBackgrounded && bgRedraw == 1) {
						blitBox(textWindowLeft, textWindowTop, textWindowRight, textWindowBottom, (int8 *) frontVideoBuffer, textWindowLeft, textWindowTop, (int8 *) workVideoBuffer);
					}

					// show clipping area
					//drawBox(renderLeft, renderTop, renderRight, renderBottom);
				}
			}
			// Drawing extras
			else if (flags == 0x1800) {
				ExtraListStruct *extra = &extraList[actorIdx];

				projectPositionOnScreen(extra->X - cameraX, extra->Y - cameraY, extra->Z - cameraZ);

				if (extra->info0 & 0x8000) {
					drawExtraSpecial(actorIdx, projPosX, projPosY);
				} else {
					int32 spriteWidth, spriteHeight;

					getSpriteSize(0, &spriteWidth, &spriteHeight, spriteTable[extra->info0]);

					// calculate sprite position on screen
					renderLeft = projPosX + *(int16 *)(spriteBoundingBoxPtr + extra->info0 * 16);
					renderTop = projPosY + *(int16 *)(spriteBoundingBoxPtr + extra->info0 * 16 + 2);
					renderRight = renderLeft + spriteWidth;
					renderBottom = renderTop + spriteHeight;

					drawSprite(0, renderLeft, renderTop, spriteTable[extra->info0]);
				}

				setClip(renderLeft, renderTop, renderRight, renderBottom);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					int32 tmpX, tmpY, tmpZ;

					tmpX = (drawList[pos].X + 0x100) >> 9;
					tmpY = drawList[pos].Y >> 8;
					tmpZ = (drawList[pos].Z + 0x100) >> 9;

					drawOverModelActor(tmpX, tmpY, tmpZ);
					addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);

					// show clipping area
					//drawBox(renderLeft, renderTop, renderRight, renderBottom);
				}
			}

			resetClip();
			pos++;
		} while (pos < drawListPos);
	}

#ifdef GAMEMOD
	displayZones(skipIntro);
#endif

	for (i = 0; i < OVERLAY_MAX_ENTRIES; i++) {
		OverlayListStruct *overlay = &overlayList[i];
		if (overlay->info0 != -1) {
			// process position overlay
			switch(overlay->posType) {
			case koNormal:
				if (lbaTime >= overlay->lifeTime) {
					overlay->info0 = -1;
					continue;
				}
				break;
			case koFollowActor: {
				ActorStruct *actor = &sceneActors[overlay->info1];

				projectPositionOnScreen(actor->X - cameraX, actor->Y + actor->boudingBox.Y.topRight - cameraY, actor->Z - cameraZ);

				overlay->X = projPosX;
				overlay->Y = projPosY;

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

			// process overlay type
			switch(overlay->type) {
			case koSprite: {
				int16 offsetX, offsetY;
				int32 spriteWidth, spriteHeight;
				uint8 *spritePtr = spriteTable[overlay->info0];

				getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

				offsetX = *((int16 *)(spriteBoundingBoxPtr + (overlay->info0 * 16)));
				offsetY = *((int16 *)(spriteBoundingBoxPtr + (overlay->info0 * 16) + 2));

				renderLeft   = offsetX + overlay->X;
				renderTop    = offsetY + overlay->Y;
				renderRight  = renderLeft + spriteWidth;
				renderBottom = renderTop + spriteHeight;

				drawSprite(0, renderLeft, renderTop, spritePtr);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);
				}

			}
				break;
			case koNumber: {
				int32 textLength, textHeight;
				int8 text[10];
				sprintf(text, "%d", overlay->info0);

				textLength = getTextSize(text);
				textHeight = 48;

				renderLeft   = overlay->X - (textLength/2);
				renderTop    = overlay->Y - 24;
				renderRight  = overlay->X + (textLength/2);
				renderBottom = overlay->Y + textHeight;

				setClip(renderLeft, renderTop, renderRight, renderBottom);

				setFontColor(overlay->info1);

				drawText(renderLeft, renderTop, text);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);
				}
			}
				break;
			case koNumberRange: {
				int32 textLength, textHeight, range;
				int8 text[10];

				range = getAverageValue(overlay->info1, overlay->info0, 100, overlay->lifeTime - lbaTime - 50);

				sprintf(text, "%d", range);

				textLength = getTextSize(text);
				textHeight = 48;

				renderLeft   = overlay->X - (textLength/2);
				renderTop    = overlay->Y - 24;
				renderRight  = overlay->X + (textLength/2);
				renderBottom = overlay->Y + textHeight;

				setClip(renderLeft, renderTop, renderRight, renderBottom);

				setFontColor(155);

				drawText(renderLeft, renderTop, text);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);
				}
			}
				break;
			case koInventoryItem: {
				int32 item = overlay->info0;

				drawSplittedBox(10, 10, 69, 69, 0);
				setClip(10, 10, 69, 69);

				prepareIsoModel(inventoryTable[item]);
				setCameraPosition(40, 40, 128, 200, 200);
				setCameraAngle(0, 0, 0, 60, 0, 0, 16000);

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

				renderIsoModel(0, 0, 0, 0, overlayRotation, 0, inventoryTable[item]);
				drawBox(10, 10, 69, 69);
				addRedrawArea(10, 10, 69, 69);
				initEngineProjections();
			}
				break;
			case koText: {
				int32 textLength, textHeight;
				int8 text[256];

				getMenuText(overlay->info0, text);

				textLength = getTextSize(text);
				textHeight = 48;

				renderLeft   = overlay->X - (textLength/2);
				renderTop    = overlay->Y - 24;
				renderRight  = overlay->X + (textLength/2);
				renderBottom = overlay->Y + textHeight;

				if(renderLeft < 0) {
					renderLeft = 0;
				}

				if(renderTop < 0) {
					renderTop = 0;
				}

				if(renderRight > SCREEN_TEXTLIMIT_RIGHT) {
					renderRight = SCREEN_TEXTLIMIT_RIGHT;
				}

				if(renderBottom > SCREEN_TEXTLIMIT_BOTTOM) {
					renderBottom = SCREEN_TEXTLIMIT_BOTTOM;
				}

				setClip(renderLeft, renderTop, renderRight, renderBottom);

				setFontColor(sceneActors[overlay->info1].talkColor);

				drawText(renderLeft, renderTop, text);

				if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
					addRedrawArea(textWindowLeft, textWindowTop, renderRight, renderBottom);
				}
			}
				break;
			}
		}
	}

	resetClip();

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

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

	if (lockPalette) {
		if (useAlternatePalette) {
			fadeToPal(paletteRGBA);
		} else {
			fadeToPal(mainPaletteRGBA);
		}
		lockPalette = 0;
	}

	if (zoomScreen) {
        //zoomScreenScale();
    }
}

void drawBubble(int32 actorIdx) {
    int32 spriteWidth, spriteHeight;
    uint8 *spritePtr;
    ActorStruct *actor = &sceneActors[actorIdx];

    // get actor position on screen
    projectPositionOnScreen(actor->X - cameraX, actor->Y + actor->boudingBox.Y.topRight - cameraY, actor->Z - cameraZ);

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

    spritePtr = spriteTable[bubbleSpriteIndex];
    getSpriteSize(0, &spriteWidth, &spriteHeight, spritePtr);

    // calculate sprite position on screen
    if (bubbleSpriteIndex == SPRITEHQR_DIAG_BUBBLE_RIGHT) {
        renderLeft = projPosX + 10;
    } else {
        renderLeft = projPosX - 10 - spriteWidth;
    }
    renderTop = projPosY - 20;
    renderRight = spriteWidth + renderLeft - 1;
    renderBottom = spriteHeight + renderTop - 1;

    setClip(renderLeft, renderTop, renderRight, renderBottom);

    drawSprite(0, renderLeft, renderTop, spritePtr);
    if (textWindowLeft <= textWindowRight && textWindowTop <= textWindowBottom) {
        copyBlockPhys(renderLeft, renderTop, renderRight, renderBottom);
    }

    resetClip();
}

void zoomScreenScale() {
    int h, w;
	uint8 * dest;
    uint8 * zoomWorkVideoBuffer = (uint8 *) malloc((SCREEN_WIDTH * SCREEN_HEIGHT) * sizeof(uint8));
    memcpy(zoomWorkVideoBuffer, workVideoBuffer, SCREEN_WIDTH*SCREEN_HEIGHT);

	dest = workVideoBuffer;

    for (h = 0; h < SCREEN_HEIGHT; h++) {
		for (w = 0; w < SCREEN_WIDTH; w++) {
			*dest++ = *zoomWorkVideoBuffer;
			*dest++ = *zoomWorkVideoBuffer++;
		}
		//memcpy(dest, dest - SCREEN_WIDTH, SCREEN_WIDTH);
		//dest += SCREEN_WIDTH;
	}
	copyScreen(workVideoBuffer, frontVideoBuffer);
    //free(zoomWorkVideoBuffer);
}