r_crosshairs.c

   1
   2 #include "quakedef.h"
   3 #include "cl_collision.h"
   4
   5 cvar_t crosshair_brightness = {CVAR_SAVE, "crosshair_brightness", "1", "how bright the crosshair should be"};
   6 cvar_t crosshair_alpha = {CVAR_SAVE, "crosshair_alpha", "1", "how opaque the crosshair should be"};
   7 cvar_t crosshair_flashspeed = {CVAR_SAVE, "crosshair_flashspeed", "2", "speed at which the crosshair flashes"};
   8 cvar_t crosshair_flashrange = {CVAR_SAVE, "crosshair_flashrange", "0.1", "how much the crosshair flashes"};
   9 cvar_t crosshair_size = {CVAR_SAVE, "crosshair_size", "1", "adjusts size of the crosshair on the screen"};
  10 cvar_t crosshair_static = {CVAR_SAVE, "crosshair_static", "1", "if 1 the crosshair is a 2D overlay, if 0 it is a sprite in the world indicating where your weapon will hit in standard quake mods (if the mod has the weapon somewhere else this won't be accurate)"};
  11
  12 void R_Crosshairs_Init(void)
  13 {
  14         Cvar_RegisterVariable(&crosshair_brightness);
  15         Cvar_RegisterVariable(&crosshair_alpha);
  16         Cvar_RegisterVariable(&crosshair_flashspeed);
  17         Cvar_RegisterVariable(&crosshair_flashrange);
  18         Cvar_RegisterVariable(&crosshair_size);
  19         Cvar_RegisterVariable(&crosshair_static);
  20 }
  21
  22 void R_GetCrosshairColor(float *out)
  23 {
  24         int i;
  25         unsigned char *color;
  26         float scale, base;
  27         if (cl.viewentity >= 1 && cl.viewentity <= cl.maxclients)
  28         {
  29                 i = (cl.scores[cl.viewentity-1].colors & 0xF) << 4;
  30                 if (i >= 208 && i < 224) // blue
  31                         i += 8;
  32                 else if (i < 128 || i >= 224) // 128-224 are backwards ranges (bright to dark, rather than dark to bright)
  33                         i += 15;
  34         }
  35         else
  36                 i = 15;
  37         color = (unsigned char *) &palette_complete[i];
  38         if (crosshair_flashspeed.value >= 0.01f)
  39                 base = (sin(realtime * crosshair_flashspeed.value * (M_PI*2.0f)) * crosshair_flashrange.value);
  40         else
  41                 base = 0.0f;
  42         scale = crosshair_brightness.value * (1.0f / 255.0f);
  43         out[0] = color[0] * scale + base;
  44         out[1] = color[1] * scale + base;
  45         out[2] = color[2] * scale + base;
  46         out[3] = crosshair_alpha.value;
  47
  48         // clamp the colors and alpha
  49         out[0] = bound(0, out[0], 1);
  50         out[1] = bound(0, out[1], 1);
  51         out[2] = bound(0, out[2], 1);
  52         out[3] = bound(0, out[3], 1.0f);
  53 }
  54
  55 void R_DrawWorldCrosshair(void)
  56 {
  57         int num;
  58         cachepic_t *pic;
  59         vec3_t v1, v2, spriteorigin;
  60         vec_t spritescale;
  61         vec4_t color;
  62         trace_t trace;
  63         if (r_letterbox.value)
  64                 return;
  65         if (crosshair_static.integer)
  66                 return;
  67         num = crosshair.integer;
  68         if (num < 1 || num > NUMCROSSHAIRS || cl.intermission)
  69                 return;
  70         if (!cl.viewentity || !cl.entities[cl.viewentity].state_current.active)
  71                 return;
  72         pic = r_crosshairs[num];
  73         if (!pic)
  74                 return;
  75         R_GetCrosshairColor(color);
  76
  77         // trace the shot path up to a certain distance
  78         Matrix4x4_OriginFromMatrix(&cl.entities[cl.viewentity].render.matrix, v1);
  79         v1[2] += 16; // HACK: this depends on the QC
  80
  81         // get the forward vector for the gun (not the view)
  82         AngleVectors(cl.viewangles, v2, NULL, NULL);
  83         //VectorCopy(r_vieworigin, v1);
  84         VectorMA(v1, 8192, v2, v2);
  85         trace = CL_TraceBox(v1, vec3_origin, vec3_origin, v2, true, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_SKY, false);
  86         spritescale = trace.fraction * (8192.0f / 40.0f) * crosshair_size.value;
  87         VectorCopy(trace.endpos, spriteorigin);
  88
  89         // draw the sprite
  90         R_DrawSprite(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, pic->tex, NULL, true, spriteorigin, r_viewright, r_viewup, spritescale, -spritescale, -spritescale, spritescale, color[0], color[1], color[2], color[3]);
  91 }
  92
  93 void R_Draw2DCrosshair(void)
  94 {
  95         int num;
  96         cachepic_t *pic;
  97         vec4_t color;
  98         if (r_letterbox.value)
  99                 return;
 100         if (!crosshair_static.integer)
 101                 return;
 102         num = crosshair.integer;
 103         if (num < 1 || num > NUMCROSSHAIRS || cl.intermission)
 104                 return;
 105         if (!cl.viewentity || !cl.entities[cl.viewentity].state_current.active)
 106                 return;
 107         pic = r_crosshairs[num];
 108         if (pic)
 109         {
 110                 R_GetCrosshairColor(color);
 111                 DrawQ_Pic((vid_conwidth.integer - pic->width * crosshair_size.value) * 0.5f, (vid_conheight.integer - pic->height * crosshair_size.value) * 0.5f, pic, pic->width * crosshair_size.value, pic->height * crosshair_size.value, color[0], color[1], color[2], color[3], 0);
 112         }
 113 }
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