From c7ba1d40e5f76993ee773e2d8790313dca2628db Mon Sep 17 00:00:00 2001
From: Tyler Young <tyleryoung88@yahoo.com>
Date: Sun, 22 Jan 2023 17:48:43 -0500
Subject: [PATCH] Added colored crosshair to Quakespasm

Enabled facingenemy in progdefs
---
 source/draw.h      |  1 +
 source/gl_draw.c   | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 source/gl_screen.c | 21 ++++++++++++------
 source/progdefs.q1 |  1 +
 4 files changed, 71 insertions(+), 6 deletions(-)

diff --git a/source/draw.h b/source/draw.h
index 17134e9..8bea9fd 100644
--- a/source/draw.h
+++ b/source/draw.h
@@ -30,6 +30,7 @@ extern	qpic_t		*draw_disc;	// also used on sbar
 
 void Draw_Init (void);
 void Draw_Character (int x, int y, int num);
+void Draw_CharacterRGBA(int x, int y, int num, float r, float g, float b, float a); //sB
 void Draw_DebugChar (char num);
 void Draw_StretchPic (int x, int y, qpic_t *pic, int x_value, int y_value);
 void Draw_Pic (int x, int y, qpic_t *pic);
diff --git a/source/gl_draw.c b/source/gl_draw.c
index 767dfba..de5acca 100644
--- a/source/gl_draw.c
+++ b/source/gl_draw.c
@@ -553,6 +553,60 @@ void Draw_Character (int x, int y, int num)
 	glEnd ();
 }
 
+/*
+================
+Draw_CharacterRGBA
+
+This is the same as Draw_Character, but with RGBA color codes.
+- MotoLegacy and ported to Quakespasm by sB :)
+================
+*/
+void Draw_CharacterRGBA(int x, int y, int num, float r, float g, float b, float a)
+{
+	int				row, col;
+	float			frow, fcol, size;
+	
+	if (y <= -8)
+		return;			// totally off screen
+
+	num &= 255;
+
+	if (num == 32)
+		return; //don't waste verts on spaces
+	
+	glEnable (GL_BLEND);
+    glColor4f(r, g, b, a);
+	glDisable (GL_ALPHA_TEST);
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+	GL_Bind (char_texture);
+	glBegin (GL_QUADS);
+
+	row = num>>4;
+	col = num&15;
+
+	frow = row*0.0625;
+	fcol = col*0.0625;
+	size = 0.0625;
+
+	glTexCoord2f (fcol, frow);
+	glVertex2f (x, y);
+	glTexCoord2f (fcol + size, frow);
+	glVertex2f (x+8, y);
+	glTexCoord2f (fcol + size, frow + size);
+	glVertex2f (x+8, y+8);
+	glTexCoord2f (fcol, frow + size);
+	glVertex2f (x, y+8);
+	
+	glEnd ();
+	
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+	glEnable(GL_ALPHA_TEST);
+	glDisable (GL_BLEND);
+	glColor4f (1,1,1,1);
+}
+
+
 /*
 ================
 Draw_String -- johnfitz -- modified to call Draw_CharacterQuad
diff --git a/source/gl_screen.c b/source/gl_screen.c
index 2d0c054..f1f3567 100644
--- a/source/gl_screen.c
+++ b/source/gl_screen.c
@@ -1449,6 +1449,15 @@ void SCR_DrawCrosshair (void)
 	if (cl.stats[STAT_HEALTH] < 20 || paused_hack == true || m_state == m_exit) {
 		return;
 	}
+	
+	float col;
+
+	if (sv_player->v.facingenemy == 1) {
+		col = 0;
+	} else {
+		col = 255;
+	}
+	
 #ifdef VITA
 	GL_SetCanvas(CANVAS_HUD);
 #else
@@ -1472,7 +1481,7 @@ void SCR_DrawCrosshair (void)
 
 	if (cl.stats[STAT_ACTIVEWEAPON] == W_M2)
 	{
-		Draw_Character ((vid.width)/4-4, (vid.height)*3/4, 'O');
+		Draw_CharacterRGBA ((vid.width)/4-4, (vid.height)*3/4, 'O', 255, col, col, 0.7);
 	}
 	else if (crosshair.value == 1 && cl.stats[STAT_ZOOM] != 1 && cl.stats[STAT_ZOOM] != 2 && cl.stats[STAT_ACTIVEWEAPON] != W_PANZER)
     {
@@ -1485,22 +1494,22 @@ void SCR_DrawCrosshair (void)
 
 		x_value = ((vid.width - 8)/4) - crosshair_offset_step;
 		y_value = (vid.height - 8)*3/4;
-		Draw_Character (x_value, y_value, 158);
+		Draw_CharacterRGBA (x_value, y_value, 158, 255, col, col, 0.7);
 
 		x_value = ((vid.width - 8)/4) + crosshair_offset_step;
 		y_value = (vid.height - 8)*3/4;
-		Draw_Character (x_value, y_value, 158);
+		Draw_CharacterRGBA (x_value, y_value, 158, 255, col, col, 0.7);
 
 		x_value = ((vid.width - 8)/4);
 		y_value = (vid.height - 8)*3/4 - crosshair_offset_step;
-		Draw_Character (x_value, y_value, 157);
+		Draw_CharacterRGBA (x_value, y_value, 157, 255, col, col, 0.7);
 
 		x_value = ((vid.width - 8)/4);
 		y_value = (vid.height - 8)*3/4 + crosshair_offset_step;
-		Draw_Character (x_value, y_value, 157);
+		Draw_CharacterRGBA (x_value, y_value, 157, 255, col, col, 0.7);
     }
     else if (crosshair.value && cl.stats[STAT_ZOOM] != 1 && cl.stats[STAT_ZOOM] != 2)
-		Draw_Character ((vid.width - 8)/4/* + crosshair_x*/, (vid.height - 8)*3/4/* + crosshair_y*/, '.');
+		Draw_CharacterRGBA ((vid.width - 8)/4/* + crosshair_x*/, (vid.height - 8)*3/4/* + crosshair_y*/, '.', 255, col, col, 0.7);
 	if (cl.stats[STAT_ZOOM] == 2) {
 		Draw_AlphaStretchPic (0, 0, vid.width, vid.height, 1, sniper_scope);
 	}
diff --git a/source/progdefs.q1 b/source/progdefs.q1
index b0346f2..66a1e48 100644
--- a/source/progdefs.q1
+++ b/source/progdefs.q1
@@ -161,6 +161,7 @@ typedef struct
 	float   	Flash_Size;
 	float   	currentmag2;
 	float   	maxspeed;
+	float 		facingenemy;
 	float   	renderGrayscale;
 	vec3_t		colormod;
 	vec3_t		glowmod;