cg_draw.c

quakeIII源码这个不用我多说吧

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//
// cg_draw.c -- draw all of the graphical elements during
// active (after loading) gameplay

#include "cg_local.h"

#ifdef MISSIONPACK
#include "../ui/ui_shared.h"

// used for scoreboard
extern displayContextDef_t cgDC;
menuDef_t *menuScoreboard = NULL;
#else
int drawTeamOverlayModificationCount = -1;
#endif

int sortedTeamPlayers[TEAM_MAXOVERLAY];
int	numSortedTeamPlayers;

char systemChat[256];
char teamChat1[256];
char teamChat2[256];

#ifdef MISSIONPACK

int CG_Text_Width(const char *text, float scale, int limit) {
  int count,len;
	float out;
	glyphInfo_t *glyph;
	float useScale;
// FIXME: see ui_main.c, same problem
//	const unsigned char *s = text;
	const char *s = text;
	fontInfo_t *font = &cgDC.Assets.textFont;
	if (scale <= cg_smallFont.value) {
		font = &cgDC.Assets.smallFont;
	} else if (scale > cg_bigFont.value) {
		font = &cgDC.Assets.bigFont;
	}
	useScale = scale * font->glyphScale;
  out = 0;
  if (text) {
    len = strlen(text);
		if (limit > 0 && len > limit) {
			len = limit;
		}
		count = 0;
		while (s && *s && count < len) {
			if ( Q_IsColorString(s) ) {
				s += 2;
				continue;
			} else {
				glyph = &font->glyphs[(int)*s]; // TTimo: FIXME: getting nasty warnings without the cast, hopefully this doesn't break the VM build
				out += glyph->xSkip;
				s++;
				count++;
			}
    }
  }
  return out * useScale;
}

int CG_Text_Height(const char *text, float scale, int limit) {
  int len, count;
	float max;
	glyphInfo_t *glyph;
	float useScale;
// TTimo: FIXME
//	const unsigned char *s = text;
	const char *s = text;
	fontInfo_t *font = &cgDC.Assets.textFont;
	if (scale <= cg_smallFont.value) {
		font = &cgDC.Assets.smallFont;
	} else if (scale > cg_bigFont.value) {
		font = &cgDC.Assets.bigFont;
	}
	useScale = scale * font->glyphScale;
  max = 0;
  if (text) {
    len = strlen(text);
		if (limit > 0 && len > limit) {
			len = limit;
		}
		count = 0;
		while (s && *s && count < len) {
			if ( Q_IsColorString(s) ) {
				s += 2;
				continue;
			} else {
				glyph = &font->glyphs[(int)*s]; // TTimo: FIXME: getting nasty warnings without the cast, hopefully this doesn't break the VM build
	      if (max < glyph->height) {
		      max = glyph->height;
			  }
				s++;
				count++;
			}
    }
  }
  return max * useScale;
}

void CG_Text_PaintChar(float x, float y, float width, float height, float scale, float s, float t, float s2, float t2, qhandle_t hShader) {
  float w, h;
  w = width * scale;
  h = height * scale;
  CG_AdjustFrom640( &x, &y, &w, &h );
  trap_R_DrawStretchPic( x, y, w, h, s, t, s2, t2, hShader );
}

void CG_Text_Paint(float x, float y, float scale, vec4_t color, const char *text, float adjust, int limit, int style) {
  int len, count;
	vec4_t newColor;
	glyphInfo_t *glyph;
	float useScale;
	fontInfo_t *font = &cgDC.Assets.textFont;
	if (scale <= cg_smallFont.value) {
		font = &cgDC.Assets.smallFont;
	} else if (scale > cg_bigFont.value) {
		font = &cgDC.Assets.bigFont;
	}
	useScale = scale * font->glyphScale;
  if (text) {
// TTimo: FIXME
//		const unsigned char *s = text;
		const char *s = text;
		trap_R_SetColor( color );
		memcpy(&newColor[0], &color[0], sizeof(vec4_t));
    len = strlen(text);
		if (limit > 0 && len > limit) {
			len = limit;
		}
		count = 0;
		while (s && *s && count < len) {
			glyph = &font->glyphs[(int)*s]; // TTimo: FIXME: getting nasty warnings without the cast, hopefully this doesn't break the VM build
      //int yadj = Assets.textFont.glyphs[text[i]].bottom + Assets.textFont.glyphs[text[i]].top;
      //float yadj = scale * (Assets.textFont.glyphs[text[i]].imageHeight - Assets.textFont.glyphs[text[i]].height);
			if ( Q_IsColorString( s ) ) {
				memcpy( newColor, g_color_table[ColorIndex(*(s+1))], sizeof( newColor ) );
				newColor[3] = color[3];
				trap_R_SetColor( newColor );
				s += 2;
				continue;
			} else {
				float yadj = useScale * glyph->top;
				if (style == ITEM_TEXTSTYLE_SHADOWED || style == ITEM_TEXTSTYLE_SHADOWEDMORE) {
					int ofs = style == ITEM_TEXTSTYLE_SHADOWED ? 1 : 2;
					colorBlack[3] = newColor[3];
					trap_R_SetColor( colorBlack );
					CG_Text_PaintChar(x + ofs, y - yadj + ofs, 
														glyph->imageWidth,
														glyph->imageHeight,
														useScale, 
														glyph->s,
														glyph->t,
														glyph->s2,
														glyph->t2,
														glyph->glyph);
					colorBlack[3] = 1.0;
					trap_R_SetColor( newColor );
				}
				CG_Text_PaintChar(x, y - yadj, 
													glyph->imageWidth,
													glyph->imageHeight,
													useScale, 
													glyph->s,
													glyph->t,
													glyph->s2,
													glyph->t2,
													glyph->glyph);
				// CG_DrawPic(x, y - yadj, scale * cgDC.Assets.textFont.glyphs[text[i]].imageWidth, scale * cgDC.Assets.textFont.glyphs[text[i]].imageHeight, cgDC.Assets.textFont.glyphs[text[i]].glyph);
				x += (glyph->xSkip * useScale) + adjust;
				s++;
				count++;
			}
    }
	  trap_R_SetColor( NULL );
  }
}


#endif

/*
==============
CG_DrawField

Draws large numbers for status bar and powerups
==============
*/
#ifndef MISSIONPACK
static void CG_DrawField (int x, int y, int width, int value) {
	char	num[16], *ptr;
	int		l;
	int		frame;

	if ( width < 1 ) {
		return;
	}

	// draw number string
	if ( width > 5 ) {
		width = 5;
	}

	switch ( width ) {
	case 1:
		value = value > 9 ? 9 : value;
		value = value < 0 ? 0 : value;
		break;
	case 2:
		value = value > 99 ? 99 : value;
		value = value < -9 ? -9 : value;
		break;
	case 3:
		value = value > 999 ? 999 : value;
		value = value < -99 ? -99 : value;
		break;
	case 4:
		value = value > 9999 ? 9999 : value;
		value = value < -999 ? -999 : value;
		break;
	}

	Com_sprintf (num, sizeof(num), "%i", value);
	l = strlen(num);
	if (l > width)
		l = width;
	x += 2 + CHAR_WIDTH*(width - l);

	ptr = num;
	while (*ptr && l)
	{
		if (*ptr == '-')
			frame = STAT_MINUS;
		else
			frame = *ptr -'0';

		CG_DrawPic( x,y, CHAR_WIDTH, CHAR_HEIGHT, cgs.media.numberShaders[frame] );
		x += CHAR_WIDTH;
		ptr++;
		l--;
	}
}
#endif // MISSIONPACK

/*
================
CG_Draw3DModel

================
*/
void CG_Draw3DModel( float x, float y, float w, float h, qhandle_t model, qhandle_t skin, vec3_t origin, vec3_t angles ) {
	refdef_t		refdef;
	refEntity_t		ent;

	if ( !cg_draw3dIcons.integer || !cg_drawIcons.integer ) {
		return;
	}

	CG_AdjustFrom640( &x, &y, &w, &h );

	memset( &refdef, 0, sizeof( refdef ) );

	memset( &ent, 0, sizeof( ent ) );
	AnglesToAxis( angles, ent.axis );
	VectorCopy( origin, ent.origin );
	ent.hModel = model;
	ent.customSkin = skin;
	ent.renderfx = RF_NOSHADOW;		// no stencil shadows

	refdef.rdflags = RDF_NOWORLDMODEL;

	AxisClear( refdef.viewaxis );

	refdef.fov_x = 30;
	refdef.fov_y = 30;

	refdef.x = x;
	refdef.y = y;
	refdef.width = w;
	refdef.height = h;

	refdef.time = cg.time;

	trap_R_ClearScene();
	trap_R_AddRefEntityToScene( &ent );
	trap_R_RenderScene( &refdef );
}

/*
================
CG_DrawHead

Used for both the status bar and the scoreboard
================
*/
void CG_DrawHead( float x, float y, float w, float h, int clientNum, vec3_t headAngles ) {
	clipHandle_t	cm;
	clientInfo_t	*ci;
	float			len;
	vec3_t			origin;
	vec3_t			mins, maxs;

	ci = &cgs.clientinfo[ clientNum ];

	if ( cg_draw3dIcons.integer ) {
		cm = ci->headModel;
		if ( !cm ) {
			return;
		}

		// offset the origin y and z to center the head
		trap_R_ModelBounds( cm, mins, maxs );

		origin[2] = -0.5 * ( mins[2] + maxs[2] );
		origin[1] = 0.5 * ( mins[1] + maxs[1] );

		// calculate distance so the head nearly fills the box
		// assume heads are taller than wide
		len = 0.7 * ( maxs[2] - mins[2] );		
		origin[0] = len / 0.268;	// len / tan( fov/2 )

		// allow per-model tweaking
		VectorAdd( origin, ci->headOffset, origin );

		CG_Draw3DModel( x, y, w, h, ci->headModel, ci->headSkin, origin, headAngles );
	} else if ( cg_drawIcons.integer ) {
		CG_DrawPic( x, y, w, h, ci->modelIcon );
	}

	// if they are deferred, draw a cross out
	if ( ci->deferred ) {
		CG_DrawPic( x, y, w, h, cgs.media.deferShader );
	}
}

/*
================
CG_DrawFlagModel

Used for both the status bar and the scoreboard
================
*/
void CG_DrawFlagModel( float x, float y, float w, float h, int team, qboolean force2D ) {
	qhandle_t		cm;
	float			len;
	vec3_t			origin, angles;
	vec3_t			mins, maxs;
	qhandle_t		handle;

	if ( !force2D && cg_draw3dIcons.integer ) {

		VectorClear( angles );

		cm = cgs.media.redFlagModel;

		// offset the origin y and z to center the flag
		trap_R_ModelBounds( cm, mins, maxs );

		origin[2] = -0.5 * ( mins[2] + maxs[2] );
		origin[1] = 0.5 * ( mins[1] + maxs[1] );

		// calculate distance so the flag nearly fills the box
		// assume heads are taller than wide
		len = 0.5 * ( maxs[2] - mins[2] );		
		origin[0] = len / 0.268;	// len / tan( fov/2 )

		angles[YAW] = 60 * sin( cg.time / 2000.0 );;

		if( team == TEAM_RED ) {
			handle = cgs.media.redFlagModel;
		} else if( team == TEAM_BLUE ) {
			handle = cgs.media.blueFlagModel;
		} else if( team == TEAM_FREE ) {
			handle = cgs.media.neutralFlagModel;
		} else {
			return;
		}
		CG_Draw3DModel( x, y, w, h, handle, 0, origin, angles );
	} else if ( cg_drawIcons.integer ) {
		gitem_t *item;

		if( team == TEAM_RED ) {
			item = BG_FindItemForPowerup( PW_REDFLAG );
		} else if( team == TEAM_BLUE ) {
			item = BG_FindItemForPowerup( PW_BLUEFLAG );
		} else if( team == TEAM_FREE ) {
			item = BG_FindItemForPowerup( PW_NEUTRALFLAG );
		} else {
			return;
		}
		if (item) {
		  CG_DrawPic( x, y, w, h, cg_items[ ITEM_INDEX(item) ].icon );
		}
	}
}

/*
================
CG_DrawStatusBarHead

================
*/
#ifndef MISSIONPACK

static void CG_DrawStatusBarHead( float x ) {
	vec3_t		angles;
	float		size, stretch;
	float		frac;

	VectorClear( angles );

	if ( cg.damageTime && cg.time - cg.damageTime < DAMAGE_TIME ) {
		frac = (float)(cg.time - cg.damageTime ) / DAMAGE_TIME;
		size = ICON_SIZE * 1.25 * ( 1.5 - frac * 0.5 );

		stretch = size - ICON_SIZE * 1.25;
		// kick in the direction of damage
		x -= stretch * 0.5 + cg.damageX * stretch * 0.5;

		cg.headStartYaw = 180 + cg.damageX * 45;

		cg.headEndYaw = 180 + 20 * cos( crandom()*M_PI );
		cg.headEndPitch = 5 * cos( crandom()*M_PI );

		cg.headStartTime = cg.time;
		cg.headEndTime = cg.time + 100 + random() * 2000;
	} else {
		if ( cg.time >= cg.headEndTime ) {
			// select a new head angle
			cg.headStartYaw = cg.headEndYaw;
			cg.headStartPitch = cg.headEndPitch;
			cg.headStartTime = cg.headEndTime;
			cg.headEndTime = cg.time + 100 + random() * 2000;

			cg.headEndYaw = 180 + 20 * cos( crandom()*M_PI );
			cg.headEndPitch = 5 * cos( crandom()*M_PI );
		}

		size = ICON_SIZE * 1.25;
	}

	// if the server was frozen for a while we may have a bad head start time
	if ( cg.headStartTime > cg.time ) {
		cg.headStartTime = cg.time;
	}

	frac = ( cg.time - cg.headStartTime ) / (float)( cg.headEndTime - cg.headStartTime );
	frac = frac * frac * ( 3 - 2 * frac );
	angles[YAW] = cg.headStartYaw + ( cg.headEndYaw - cg.headStartYaw ) * frac;
	angles[PITCH] = cg.headStartPitch + ( cg.headEndPitch - cg.headStartPitch ) * frac;

	CG_DrawHead( x, 480 - size, size, size, 
				cg.snap->ps.clientNum, angles );
}
#endif // MISSIONPACK

/*
================
CG_DrawStatusBarFlag

================
*/
#ifndef MISSIONPACK
static void CG_DrawStatusBarFlag( float x, int team ) {
	CG_DrawFlagModel( x, 480 - ICON_SIZE, ICON_SIZE, ICON_SIZE, team, qfalse );
}
#endif // MISSIONPACK

/*
================
CG_DrawTeamBackground

================
*/
void CG_DrawTeamBackground( int x, int y, int w, int h, float alpha, int team )
{
	vec4_t		hcolor;

	hcolor[3] = alpha;
	if ( team == TEAM_RED ) {
		hcolor[0] = 1;
		hcolor[1] = 0;
		hcolor[2] = 0;
	} else if ( team == TEAM_BLUE ) {
		hcolor[0] = 0;
		hcolor[1] = 0;
		hcolor[2] = 1;
	} else {
		return;
	}
	trap_R_SetColor( hcolor );
	CG_DrawPic( x, y, w, h, cgs.media.teamStatusBar );
	trap_R_SetColor( NULL );
}

/*
================
CG_DrawStatusBar

================
*/
#ifndef MISSIONPACK
static void CG_DrawStatusBar( void ) {
	int			color;
	centity_t	*cent;
	playerState_t	*ps;
	int			value;
	vec4_t		hcolor;
	vec3_t		angles;
	vec3_t		origin;