#include "engine.h"
#include "player.h"
#include "anims.h"
#include "status.h"
#include "exhumed.h"
#include "sequence.h"
#include "init.h"
#include "names.h"
#include "items.h"
#include "view.h"
#include "trigdat.h"
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "typedefs.h"

short nMaskY;
static short nAnimsFree = 0;

short statusmask[1600];

short message_timer = 0;
char message_text[80];
int magicperline;
int airperline;
int healthperline;
int nAirFrames;
int nCounter;
int nCounterDest;

short nStatusSeqOffset;
short nItemFrames;

int laststatusx;
int laststatusy;

sshort nItemSeq;
short nDigit[3];

short nMagicFrames;
short nHealthLevel;
short nItemFrame;
short nMeterRange;
short nMagicLevel;
short nHealthFrame;
short nMagicFrame;

short statusx;
short statusy;
short nHealthFrames;

short airframe;

sshort nFirstAnim;
sshort nLastAnim;
short nItemAltSeq;

short airpages = 0;

short ammodelay = 3;
short ammopages = 4;

short nCounterBullet = -1;


// 8 bytes
struct statusAnim
{
	short s1;
	short s2;	
	sshort nPage;
	schar c1;
	schar c2;
};

#define kMaxStatusAnims		50

statusAnim StatusAnim[kMaxStatusAnims];
uchar StatusAnimsFree[kMaxStatusAnims];
char StatusAnimFlags[kMaxStatusAnims];

short nItemSeqOffset[] = {91, 72, 76, 79, 68, 87, 83};

short word_9AD54[kMaxPlayers] = {0, 0, 0, 0, 0, 0, 0, 0};
int dword_9AD64[kMaxPlayers] = {0, 0, 0, 0, 0, 0, 0, 0};

void SetCounterDigits();
void SetItemSeq();
void SetItemSeq2(int nSeqOffset);


int BuildStatusAnim(int val, int nFlags)
{
	if (nAnimsFree <= 0) {
		return -1;
	}

	nAnimsFree--;

	uchar nStatusAnim = StatusAnimsFree[nAnimsFree];

	StatusAnim[nStatusAnim].c1 = -1;
	StatusAnim[nStatusAnim].c2 = nLastAnim;

	if (nLastAnim < 0) {
		nFirstAnim = nStatusAnim;
	}
	else {
		StatusAnim[nLastAnim].c1 = nStatusAnim;
	}

	nLastAnim = nStatusAnim;

	StatusAnim[nStatusAnim].s1 = val;
	StatusAnim[nStatusAnim].s2 = 0;
	StatusAnimFlags[nStatusAnim] = nFlags;
	StatusAnim[nStatusAnim].nPage = numpages;
	return nStatusAnim;
}

void RefreshStatus()
{
	short nLives = nPlayerLives[nLocalPlayer];
	if (nLives < 0 || nLives > kMaxPlayerLives) {
		bail2dos("illegal value for nPlayerLives #%d\n", nLocalPlayer);
	}

	// draws the red dots that indicate the lives amount
	BuildStatusAnim(2 * nLives + 145, 0);

	ushort nKeys = PlayerList[nLocalPlayer].keys;

	int val = 37;

	for (int i = 0; i < 4; i++)
	{
		if (nKeys & 0x1000) {
			BuildStatusAnim(val, 0);
		}

		nKeys >>= 1;
		val += 2;
	}

	barpages = numpages;

	SetPlayerItem(nLocalPlayer, nPlayerItem[nLocalPlayer]);
	SetHealthFrame(0);
	SetMagicFrame();
	SetAirFrame();
}

void InitStatus()
{
	nStatusSeqOffset = SeqOffsets[kSeqStatus];
	nHealthFrames = SeqSize[nStatusSeqOffset + 1];
	int nPicNum   = seq_GetSeqPicnum(kSeqStatus, 1, 0);
	nMagicFrames  = SeqSize[nStatusSeqOffset + 129];
	nHealthFrame  = 0;
	nMagicFrame   = 0;
	nHealthLevel  = 0;
	nMagicLevel   = 0;
	nMeterRange   = tilesizy[nPicNum];
	magicperline  = 1000 / nMeterRange;
	healthperline = 800 / nMeterRange;
	nAirFrames = SeqSize[nStatusSeqOffset + 133];
	airperline = 100 / nAirFrames;
	nCounter   = 0;
	nCounterDest = 0;

	memset(nDigit, 0, sizeof(nDigit));

	SetCounter(0);
	SetHealthFrame(0);
	SetMagicFrame();

	for (int i = 0; i < kMaxStatusAnims; i++) {
		StatusAnimsFree[i] = i;
	}

	nLastAnim  = -1;
	nFirstAnim = -1;
	nItemSeq   = -1;
	nAnimsFree = kMaxStatusAnims;
	statusx    = nScreenWidth - 320;
	textpages  = 0;
	message_timer = 0;
	statusy = nScreenHeight - 200;
}

void MoveStatusAnims()
{
//	sshort nAnim = nFirstAnim;

	for (int i = nFirstAnim; i >= 0; i = StatusAnim[i].c1)
	{
		seq_MoveSequence(-1, nStatusSeqOffset + StatusAnim[i].s1, StatusAnim[i].s2);

		StatusAnim[i].s2++;

		short nSize = SeqSize[nStatusSeqOffset + StatusAnim[i].s1];

		if (StatusAnim[i].s2 >= nSize)
		{
			if (StatusAnimFlags[i] & 0x10) {
				StatusAnim[i].s2 = 0;
			}
			else {
				StatusAnim[i].s2 = nSize - 1;
			}
		}
	}

#if 0
	while (nAnim != -1)
	{
		seq_MoveSequence(-1, nStatusSeqOffset + StatusAnim[nAnim].s1, StatusAnim[nAnim].s2);

		StatusAnim[nAnim].s2++;

		short nSize = SeqSize[nStatusSeqOffset + StatusAnim[nAnim].s1];

		if (StatusAnim[nAnim].s2 >= nSize)
		{
			if (StatusAnimFlags[nAnim] & 0x10)
				StatusAnim[nAnim].s2 = 0;
			else
				StatusAnim[nAnim].s2 = nSize - 1;
		}

		nAnim = StatusAnim[nAnim].c1;
	}
#endif
}

void DestroyStatusAnim(short nAnim)
{
	short c1 = StatusAnim[nAnim].c1;
	short c2 = StatusAnim[nAnim].c2;

	if (c2 >= 0) {
		StatusAnim[c2].c1 = c1;
	}

	if (c1 >= 0) {
		StatusAnim[c1].c2 = c2;
	}

	if (nAnim == nFirstAnim) {
		nFirstAnim = c1;
	}

	if (nAnim == nLastAnim) {
		nLastAnim = c2;
	}

	StatusAnimsFree[nAnimsFree] = (uchar)nAnim;
	nAnimsFree++;
}

void DrawStatusAnims()
{
	sshort nAnim = nFirstAnim;

	while (nAnim != -1)
	{
		int nextAnim = StatusAnim[nAnim].c1;

		int nSequence = nStatusSeqOffset + StatusAnim[nAnim].s1;

		seq_DrawStatusSequence(nSequence, StatusAnim[nAnim].s2, 0);

		if (StatusAnim[nAnim].s2 >= (SeqSize[nSequence] - 1))
		{
			if (!(StatusAnimFlags[nAnim] & 0x10))
			{
				StatusAnim[nAnim].nPage--;
				if (StatusAnim[nAnim].nPage <= 0) {
					DestroyStatusAnim(nAnim);
				}
			}
		}

		nAnim = nextAnim;
	}
}

void SetMagicFrame()
{
	nMagicLevel = (1000 - PlayerList[nLocalPlayer].nMagic) / magicperline;

	if (nMagicLevel >= nMeterRange) {
		nMagicLevel = nMeterRange - 1;
	}

	if (nMagicLevel < 0) {
		nMagicLevel = 0;
	}
	
	SetItemSeq();
}

void SetHealthFrame(short nVal)
{
	nHealthLevel = (800 - PlayerList[nLocalPlayer].nHealth) / healthperline;

	if (nHealthLevel >= nMeterRange ) {
		nHealthLevel = nMeterRange - 1;
	}

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

	if (nVal < 0) {
		BuildStatusAnim(4, 0);
	}
}

void SetAirFrame()
{
	airframe = PlayerList[nLocalPlayer].nAir / airperline;

	if (airframe < nAirFrames)
	{
		if (airframe < 0) {
			airframe = 0;
		}
	}
	else
	{
		airframe = nAirFrames - 1;
	}

	airpages = numpages;
}

void SetCounter(short nVal)
{
	if (nVal <= 999)
	{
		if (nVal < 0) {
			nVal = 0;
		}
	}
	else {
		nVal = 999;
	}

	nCounterDest = nVal;
}

void SetCounterImmediate(short nVal)
{
	SetCounter(nVal);
	nCounter = nCounterDest;

	SetCounterDigits();
}

void SetCounterDigits()
{
	nDigit[2] = 3 * (nCounter / 100 % 10);
	nDigit[1] = 3 * (nCounter / 10 % 10);
	nDigit[0] = 3 * (nCounter % 10);
	ammopages = numpages;
}

void SetItemSeq()
{
	short nItem = nPlayerItem[nLocalPlayer];
	if (nItem < 0)
	{
		nItemSeq = -1;
		return;
	}

	short nOffset = nItemSeqOffset[nItem];

	SetItemSeq2(nOffset);
}

void SetItemSeq2(int nSeqOffset)
{
	short nItem = nPlayerItem[nLocalPlayer];

	if (nItemMagic[nItem] <= PlayerList[nLocalPlayer].nMagic) {
		nItemAltSeq = 0;
	}
	else {
		nItemAltSeq = 2;
	}

	nItemFrame = 0;
	nItemSeq = nSeqOffset + nItemAltSeq;
	nItemFrames = SeqSize[nItemSeq + nStatusSeqOffset];
}

void SetPlayerItem(short nPlayer, short nItem)
{
	nPlayerItem[nPlayer] = nItem;

	if (nPlayer == nLocalPlayer)
	{
		SetItemSeq();
		if (nItem >= 0) {
			BuildStatusAnim((2 * PlayerList[nLocalPlayer].items[nItem]) + 156, 0);
		}
	}
}

void SetNextItem(int nPlayer)
{
	short nItem = nPlayerItem[nPlayer];

	int i;

	for (i = 6; i > 0; i--)
	{
		nItem++;
		if (nItem == 6)
			nItem = 0;

		if (PlayerList[nPlayer].items[nItem] != 0)
			break;
	}

	if (i > 0) {
		SetPlayerItem(nPlayer, nItem);
	}
}

void SetPrevItem(int nPlayer)
{
	if (nPlayerItem[nPlayer] == -1)
		return;

	int nItem = nPlayerItem[nPlayer];

	int i;

	for (i = 6; i > 0; i--)
	{
		nItem--;
		if (nItem < 0)
			nItem = 5;

		if (PlayerList[nPlayer].items[nItem] != 0)
			break;
	}

	if (i > 0) {
		SetPlayerItem(nPlayer, nItem);
	}
}

void MoveStatus()
{
	if (nItemSeq >= 0)
	{
		nItemFrame++;

		if (nItemFrame >= nItemFrames)
		{
			if (nItemSeq == 67) {
				SetItemSeq();
			}
			else
			{
				nItemSeq -= nItemAltSeq;

				if (nItemAltSeq || totalmoves & 0x1F)
				{
					if (nItemSeq < 2) {
						nItemAltSeq = 0;
					}
				}
				else
				{
					nItemAltSeq = 1;
				}

				nItemFrame = 0;
				nItemSeq += nItemAltSeq;
				nItemFrames = SeqSize[nStatusSeqOffset + nItemSeq];
			}
		}
	}

	if (message_timer)
	{
		message_timer -= 4;
		if (message_timer <= 0)
		{
			if (screensize < nScreenWidth) {
				textpages = numpages;
			}

			message_timer = 0;
		}
	}

	MoveStatusAnims();

	if (nCounter == nCounterDest)
	{
		nCounter = nCounterDest;
		ammopages = numpages;
		ammodelay = 3;
		return;
	}
	else
	{
		ammodelay--;
		if (ammodelay > 0) {
			return;
		}
	}

	ammopages = numpages;

	int eax = nCounterDest - nCounter;

	if (eax <= 0)
	{
		if (eax >= -30)
		{
			for (int i = 0; i < 3; i++)
			{
				nDigit[i]--;

				if (nDigit[i] < 0)
				{
					nDigit[i] += 30;
				}

				if (nDigit[i] < 27) {
					break;
				}
			}
		}
		else
		{
			nCounter += (nCounterDest - nCounter) >> 1;
			SetCounterDigits();
			return;
		}
	}
	else
	{
		if (eax <= 30)
		{
			for (int i = 0; i < 3; i++)
			{
				nDigit[i]++;

				if (nDigit[i] <= 27) {
					break;
				}

				if (nDigit[i] >= 30) {
					nDigit[i] -= 30;
				}
			}
		}
		else
		{
			nCounter += (nCounterDest - nCounter) >> 1;
			SetCounterDigits();
			return;
		}
	}
	
	if (!(nDigit[0] % 3)) {
		nCounter = nDigit[0] / 3 + 100 * (nDigit[2] / 3) + 10 * (nDigit[1] / 3);
	}

	eax = nCounterDest - nCounter;
	if (eax < 0) {
		eax = -eax;
	}

	ammodelay = 4 - (eax >> 1);
	if (ammodelay < 1) {
		ammodelay = 1;
	}
}

void UnMaskStatus()
{
	for (int i = 0; i < nScreenWidth; i++) {
		startdmost[i] = nScreenHeight;
	}
}

void MaskStatus()
{
	for (int i = 0; i < nScreenWidth; i++)
	{
		short bx = startdmost[i];
		short cx = statusmask[i];

		if (bx > cx) {
			startdmost[i] = cx;
		}
	}
}

void LoadStatus()
{
	int i;
	short nSize;
	short tmp;
	short buffer[1024];
//	memset(buffer, 0, sizeof(buffer)); // bjd - added by me

	for (i = 0; i < nScreenWidth; i++) {
		statusmask[i] = nScreenHeight;
	}

	nMaskY = nScreenHeight;

	int hStatus = kopen4load("status.msk", 1);
	if (!hStatus) {
		return;
	}

	kread(hStatus, &nSize, sizeof(nSize));

	int nCount = nSize >> 1;

	kread(hStatus, &tmp, sizeof(tmp));
	kread(hStatus, buffer, nSize);

	kclose(hStatus);

	short *pStatusMask = statusmask;

	for (i = 0; i < nCount; i++)
	{
		int v8 = nScreenHeight - ((nScreenHeight * buffer[i]) / 200);
		*pStatusMask++ = nScreenHeight - v8;

		if (bHiRes) {
			*pStatusMask++ = nScreenHeight - v8;
		}

		if (nScreenHeight - v8 < nMaskY) {
			nMaskY = nScreenHeight - v8;
		}
	}
}

void StatusMessage(int messageTime, const char *fmt, ...)
{
	message_timer = messageTime;

	va_list args;
    va_start(args, fmt);

	vsprintf(message_text, fmt, args);

	if (screensize < nScreenWidth) {
		textpages = numpages;
	}
}

void DrawStatus()
{
	char numberBuf[10] = {0};
	char stringBuf[20] = {0};
	char coordBuf[50] = {0}; // not sure of the size for this?

	if (!bFullScreen && nNetTime)
	{
		// bjd - commenting out this check seems to fix the black status bar at 320x200 resolution
//		if (bHiRes) {
			NoClip();
//		}

		if (barpages > 0)
		{
			// draw the main bar itself
			seq_DrawStatusSequence(nStatusSeqOffset, 0, 0);
			barpages--;
		}

		seq_DrawStatusSequence(nStatusSeqOffset + 128, 0, 0);
		seq_DrawStatusSequence(nStatusSeqOffset + 127, 0, 0);
		seq_DrawStatusSequence(nStatusSeqOffset + 1, nHealthFrame, nHealthLevel);
		seq_DrawStatusSequence(nStatusSeqOffset + 129, nMagicFrame, nMagicLevel);

		nHealthFrame++;
		if (nHealthFrame >= nHealthFrames) {
			nHealthFrame = 0;
		}

		nMagicFrame++;
		if (nMagicFrame >= nMagicFrames) {
			nMagicFrame = 0;
		}

		seq_DrawStatusSequence(nStatusSeqOffset + 125, 0, 0); // draw ankh on health pool
		seq_DrawStatusSequence(nStatusSeqOffset + 130, 0, 0); // draw health pool frame (top)
		seq_DrawStatusSequence(nStatusSeqOffset + 131, 0, 0); // magic pool frame (bottom)

		if (nItemSeq >= 0) {
			seq_DrawStatusSequence(nItemSeq + nStatusSeqOffset, nItemFrame, 0);
		}

		// draws health level dots and other things
		DrawStatusAnims();

		if (airpages)
		{
			seq_DrawStatusSequence(nStatusSeqOffset + 133, airframe, 0);
			airpages--;
		}

		// Draw compass
		seq_DrawStatusSequence(nStatusSeqOffset + 35, ((inita + 128) & kAngleMask) >> 8, 0);

		if (bCoordinates)
		{
			char *cFPS = itoa(lastfps, numberBuf, 10);
			printext(nScreenWidth - 20, nViewTop, cFPS, kTile159, -1);
		}

		if (ammopages)
		{
			ammopages--;
			seq_DrawStatusSequence(nStatusSeqOffset + 44, nDigit[2], 0);
			seq_DrawStatusSequence(nStatusSeqOffset + 45, nDigit[1], 0);
			seq_DrawStatusSequence(nStatusSeqOffset + 46, nDigit[0], 0);
		}

		// bjd - commenting out this check seems to fix the black status bar at 320x200 resolution
//		if (bHiRes) {
			Clip();
//		}
	}

	if (nNetPlayerCount)
	{
		NoClip();

		int shade;

		if (totalclock / kTimerTicks & 1) {
			shade = -100;
		}
		else {
			shade = 127;
		}

		int nTile = kTile3593;

		int x = 320 / (nTotalPlayers + 1);

		for (int i = 0; i < nTotalPlayers; i++)
		{
			int nScore = nPlayerScore[i];
			if (word_9AD54[i] == nScore)
			{
				int v9 = dword_9AD64[i];
				if (v9 && v9 <= totalclock) {
					dword_9AD64[i] = 0;
				}
			}
			else
			{
				word_9AD54[i] = nScore;
				dword_9AD64[i] = totalclock + 30;
			}

			overwritesprite(x, 7, nTile, 0, 3, kPalNormal);

			if (i != nLocalPlayer) {
				shade = -100;
			}

			sprintf(stringBuf, "%d", nPlayerScore[i]);
			int nStringLen = MyGetStringWidth(stringBuf);

			myprintext(x - (nStringLen / 2), 4, stringBuf, shade);

			x *= 2;
			nTile++;
		}

		if (nNetTime >= 0)
		{
			int y = nViewTop;

			if (nNetTime)
			{
				int v12 = (nNetTime + 29) / 30 % 60;
				int v13 = (nNetTime + 29) / 1800;
				nNetTime += 29;

				sprintf(stringBuf, "%d.%02d", v13, v12);

				if (bHiRes) {
					y = nViewTop / 2;
				}

				if (nViewTop <= 0) {
					y += 20;
				}
				else {
					y += 15;
				}

				nNetTime -= 29;
			}
			else
			{
				y = 100;
				strcpy(stringBuf, "GAME OVER");
			}

			int nLenString = MyGetStringWidth(stringBuf);
			myprintext((320 - nLenString) / 2, y, stringBuf, 0);
		}

		Clip();
	}

	if (bCoordinates)
	{
		int nSprite = PlayerList[nLocalPlayer].nSprite;

		int x = (nViewLeft + nViewRight) / 2;

		sprintf(coordBuf, "X %d", sprite[nSprite].x);
		printext(x, nViewTop + 1, coordBuf, kTile159, 255);

		sprintf(coordBuf, "Y %d", sprite[nSprite].y);
		printext(x, nViewTop + 10, coordBuf, kTile159, 255);
	}

	if (bHolly)
	{
		sprintf(message_text, "HOLLY: %s", sHollyStr);
		printext(0, 0, message_text, kTile159, 255);
	}
	else if (nSnakeCam < 0)
	{
		if (message_timer) {
			printext(0, 0, message_text, kTile159, 255);
		}
	}
	else
	{
		printext(0, 0, "S E R P E N T   C A M", kTile159, 255);
	}
}