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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "macros.h"

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#include "strings.h"

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#include "gfx.h"

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#include "viewport.h"

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#include "saveload.h"

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#include "hal.h"

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#include "console.h"

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#include "string.h"

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#include "variables.h"

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#include "table/sprites.h"

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#include <stdarg.h> /* va_list */

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#include "date.h"

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typedef struct TextEffect {

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	StringID string_id;

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	int32 x;

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	int32 y;

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	int32 right;

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	int32 bottom;

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	uint16 duration;

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	uint32 params_1;

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	uint32 params_2;

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} TextEffect;

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#define MAX_TEXTMESSAGE_LENGTH 150

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typedef struct TextMessage {

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	char message[MAX_TEXTMESSAGE_LENGTH];

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	uint16 color;

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	Date end_date;

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} TextMessage;

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#define MAX_CHAT_MESSAGES 10

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static TextEffect _text_effect_list[30];

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static TextMessage _textmsg_list[MAX_CHAT_MESSAGES];

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TileIndex _animated_tile_list[256];

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static bool _textmessage_dirty = false;

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static bool _textmessage_visible = false;

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/* The chatbox grows from the bottom so the coordinates are pixels from

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 * the left and pixels from the bottom. The height is the maximum height */

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static const Oblong _textmsg_box = {10, 30, 500, 150};

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static Pixel _textmessage_backup[150 * 500]; // (height * width)

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extern void memcpy_pitch(void *dst, void *src, int w, int h, int srcpitch, int dstpitch);

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static inline uint GetTextMessageCount(void)

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{

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	uint i;

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	for (i = 0; i < MAX_CHAT_MESSAGES; i++) {

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		if (_textmsg_list[i].message[0] == '\0') break;

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	}

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	return i;

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}

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/* Add a text message to the 'chat window' to be shown

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 * @param color The colour this message is to be shown in

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 * @param duration The duration of the chat message in game-days

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 * @param message message itself in printf() style */

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void CDECL AddTextMessage(uint16 color, uint8 duration, const char *message, ...)

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{

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	char buf[MAX_TEXTMESSAGE_LENGTH];

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	const char *bufp;

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	va_list va;

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	uint msg_count;

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	uint16 lines;

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	va_start(va, message);

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	vsnprintf(buf, lengthof(buf), message, va);

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	va_end(va);

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	/* Force linebreaks for strings that are too long */

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	lines = GB(FormatStringLinebreaks(buf, _textmsg_box.width - 8), 0, 16) + 1;

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	if (lines >= MAX_CHAT_MESSAGES) return;

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	msg_count = GetTextMessageCount();

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	/* We want to add more chat messages than there is free space for, remove 'old' */

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	if (lines > MAX_CHAT_MESSAGES - msg_count) {

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		int i = lines - (MAX_CHAT_MESSAGES - msg_count);

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		memmove(&_textmsg_list[0], &_textmsg_list[i], sizeof(_textmsg_list[0]) * (msg_count - i));

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		msg_count = MAX_CHAT_MESSAGES - lines;

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	}

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	for (bufp = buf; lines != 0; lines--) {

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		TextMessage *tmsg = &_textmsg_list[msg_count++];

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		ttd_strlcpy(tmsg->message, bufp, sizeof(tmsg->message));

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		/* The default colour for a message is player colour. Replace this with

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		 * white for any additional lines */

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		tmsg->color = (bufp == buf && color & IS_PALETTE_COLOR) ? color : (0x1D - 15) | IS_PALETTE_COLOR;

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		tmsg->end_date = _date + duration;

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		bufp += strlen(bufp) + 1; // jump to 'next line' in the formatted string

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	}

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	_textmessage_dirty = true;

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}

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void InitTextMessage(void)

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{

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	uint i;

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	for (i = 0; i < MAX_CHAT_MESSAGES; i++) {

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		_textmsg_list[i].message[0] = '\0';

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	}

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}

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// Hide the textbox

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void UndrawTextMessage(void)

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{

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	if (_textmessage_visible) {

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		// Sometimes we also need to hide the cursor

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		//   This is because both textmessage and the cursor take a shot of the

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		//   screen before drawing.

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		//   Now the textmessage takes his shot and paints his data before the cursor

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		//   does, so in the shot of the cursor is the screen-data of the textmessage

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		//   included when the cursor hangs somewhere over the textmessage. To

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		//   avoid wrong repaints, we undraw the cursor in that case, and everything

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		//   looks nicely ;)

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		// (and now hope this story above makes sense to you ;))

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		if (_cursor.visible) {

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			if (_cursor.draw_pos.x + _cursor.draw_size.x >= _textmsg_box.x &&

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				_cursor.draw_pos.x <= _textmsg_box.x + _textmsg_box.width &&

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				_cursor.draw_pos.y + _cursor.draw_size.y >= _screen.height - _textmsg_box.y - _textmsg_box.height &&

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				_cursor.draw_pos.y <= _screen.height - _textmsg_box.y) {

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				UndrawMouseCursor();

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			}

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		}

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		_textmessage_visible = false;

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		// Put our 'shot' back to the screen

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		memcpy_pitch(

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			_screen.dst_ptr + _textmsg_box.x + (_screen.height - _textmsg_box.y - _textmsg_box.height) * _screen.pitch,

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			_textmessage_backup,

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			_textmsg_box.width, _textmsg_box.height, _textmsg_box.width, _screen.pitch);

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		// And make sure it is updated next time

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		_video_driver->make_dirty(_textmsg_box.x, _screen.height - _textmsg_box.y - _textmsg_box.height, _textmsg_box.width, _textmsg_box.height);

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		_textmessage_dirty = true;

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	}

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}

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// Check if a message is expired every day

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void TextMessageDailyLoop(void)

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{

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	uint i;

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	for (i = 0; i < MAX_CHAT_MESSAGES; i++) {

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		TextMessage *tmsg = &_textmsg_list[i];

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		if (tmsg->message[0] == '\0') continue;

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		/* Message has expired, remove from the list */

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		if (tmsg->end_date < _date) {

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			/* Move the remaining messages over the current message */

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			if (i != MAX_CHAT_MESSAGES - 1) memmove(tmsg, tmsg + 1, sizeof(*tmsg) * (MAX_CHAT_MESSAGES - i - 1));

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			/* Mark the last item as empty */

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			_textmsg_list[MAX_CHAT_MESSAGES - 1].message[0] = '\0';

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			_textmessage_dirty = true;

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			/* Go one item back, because we moved the array 1 to the left */

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			i--;

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		}

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	}

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}

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// Draw the textmessage-box

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void DrawTextMessage(void)

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{

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	uint y, count;

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	if (!_textmessage_dirty) return;

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	// First undraw if needed

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	UndrawTextMessage();

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	if (_iconsole_mode == ICONSOLE_FULL) return;

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	/* Check if we have anything to draw at all */

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	count = GetTextMessageCount();

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	if (count == 0) return;

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	// Make a copy of the screen as it is before painting (for undraw)

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	memcpy_pitch(

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		_textmessage_backup,

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		_screen.dst_ptr + _textmsg_box.x + (_screen.height - _textmsg_box.y - _textmsg_box.height) * _screen.pitch,

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		_textmsg_box.width, _textmsg_box.height, _screen.pitch, _textmsg_box.width);

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	_cur_dpi = &_screen; // switch to _screen painting

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	/* Paint a half-transparent box behind the text messages */

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	GfxFillRect(

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			_textmsg_box.x,

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			_screen.height - _textmsg_box.y - count * 13 - 2,

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			_textmsg_box.x + _textmsg_box.width - 1,

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			_screen.height - _textmsg_box.y - 2,

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			0x322 | USE_COLORTABLE // black, but with some alpha for background

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		);

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	/* Paint the messages starting with the lowest at the bottom */

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	for (y = 13; count-- != 0; y += 13) {

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		DoDrawString(_textmsg_list[count].message, _textmsg_box.x + 3, _screen.height - _textmsg_box.y - y + 1, _textmsg_list[count].color);

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 	}

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	// Make sure the data is updated next flush

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	_video_driver->make_dirty(_textmsg_box.x, _screen.height - _textmsg_box.y - _textmsg_box.height, _textmsg_box.width, _textmsg_box.height);

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	_textmessage_visible = true;

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	_textmessage_dirty = false;

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}

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static void MarkTextEffectAreaDirty(TextEffect *te)

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{

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	MarkAllViewportsDirty(

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		te->x,

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		te->y - 1,

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		(te->right - te->x)*2 + te->x + 1,

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		(te->bottom - (te->y - 1)) * 2 + (te->y - 1) + 1

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	);

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}

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void AddTextEffect(StringID msg, int x, int y, uint16 duration)

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{

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	TextEffect *te;

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	int w;

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	char buffer[100];

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	if (_game_mode == GM_MENU) return;

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	for (te = _text_effect_list; te->string_id != INVALID_STRING_ID; ) {

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		if (++te == endof(_text_effect_list)) return;

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	}

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	te->string_id = msg;

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	te->duration = duration;

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	te->y = y - 5;

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	te->bottom = y + 5;

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	te->params_1 = GetDParam(0);

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	te->params_2 = GetDParam(4);

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	GetString(buffer, msg, lastof(buffer));

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	w = GetStringBoundingBox(buffer).width;

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	te->x = x - (w >> 1);

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	te->right = x + (w >> 1) - 1;

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	MarkTextEffectAreaDirty(te);

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}

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static void MoveTextEffect(TextEffect *te)

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{

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	if (te->duration < 8) {

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		te->string_id = INVALID_STRING_ID;

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	} else {

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		te->duration -= 8;

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		te->y--;

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		te->bottom--;

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	}

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	MarkTextEffectAreaDirty(te);

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}

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void MoveAllTextEffects(void)

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{

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	TextEffect *te;

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	for (te = _text_effect_list; te != endof(_text_effect_list); te++) {

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		if (te->string_id != INVALID_STRING_ID) MoveTextEffect(te);

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	}

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}

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void InitTextEffects(void)

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{

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	TextEffect *te;

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	for (te = _text_effect_list; te != endof(_text_effect_list); te++) {

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		te->string_id = INVALID_STRING_ID;

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	}

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}

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void DrawTextEffects(DrawPixelInfo *dpi)

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{

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	const TextEffect* te;

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	switch (dpi->zoom) {

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		case 0:

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			for (te = _text_effect_list; te != endof(_text_effect_list); te++) {

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				if (te->string_id != INVALID_STRING_ID &&

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						dpi->left <= te->right &&

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						dpi->top  <= te->bottom &&

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						dpi->left + dpi->width  > te->x &&

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						dpi->top  + dpi->height > te->y) {

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					AddStringToDraw(te->x, te->y, te->string_id, te->params_1, te->params_2);

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				}

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			}

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			break;

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		case 1:

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			for (te = _text_effect_list; te != endof(_text_effect_list); te++) {

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				if (te->string_id != INVALID_STRING_ID &&

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						dpi->left <= te->right  * 2 - te->x &&

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						dpi->top  <= te->bottom * 2 - te->y &&

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						dpi->left + dpi->width  > te->x &&

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						dpi->top  + dpi->height > te->y) {

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					AddStringToDraw(te->x, te->y, (StringID)(te->string_id-1), te->params_1, te->params_2);

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				}

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			}

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			break;

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	}

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}

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void DeleteAnimatedTile(TileIndex tile)

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{

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	TileIndex* ti;

   323

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	for (ti = _animated_tile_list; ti != endof(_animated_tile_list); ti++) {

   325

		if (tile == *ti) {

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			/* remove the hole */

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			memmove(ti, ti + 1, endof(_animated_tile_list) - 1 - ti);

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			/* and clear last item */

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			endof(_animated_tile_list)[-1] = 0;

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			MarkTileDirtyByTile(tile);

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			return;

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		}

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	}

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}

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bool AddAnimatedTile(TileIndex tile)

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{

   338

	TileIndex* ti;

   339

   340

	for (ti = _animated_tile_list; ti != endof(_animated_tile_list); ti++) {

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		if (tile == *ti || *ti == 0) {

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			*ti = tile;

   343

			MarkTileDirtyByTile(tile);

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			return true;

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		}

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	}

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	return false;

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}

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void AnimateAnimatedTiles(void)

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{

   353

	const TileIndex* ti;

   354

   355

	for (ti = _animated_tile_list; ti != endof(_animated_tile_list) && *ti != 0; ti++) {

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		AnimateTile(*ti);

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	}

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}

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   360

void InitializeAnimatedTiles(void)

   361

{

   362

	memset(_animated_tile_list, 0, sizeof(_animated_tile_list));

   363

}

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static void SaveLoad_ANIT(void)

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{

   367

	// In pre version 6, we has 16bit per tile, now we have 32bit per tile, convert it ;)

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	if (CheckSavegameVersion(6)) {

   369

		SlArray(_animated_tile_list, lengthof(_animated_tile_list), SLE_FILE_U16 | SLE_VAR_U32);

   370

	} else {

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		SlArray(_animated_tile_list, lengthof(_animated_tile_list), SLE_UINT32);

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	}

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}

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const ChunkHandler _animated_tile_chunk_handlers[] = {

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	{ 'ANIT', SaveLoad_ANIT, SaveLoad_ANIT, CH_RIFF | CH_LAST},

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};