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 // must match NUMCROSSHAIRS in gl_draw.c
  13 #define NUMCROSSHAIRS 6
  14
  15 void R_Crosshairs_Init(void)
  16 {
  17         Cvar_RegisterVariable(&crosshair_brightness);
  18         Cvar_RegisterVariable(&crosshair_alpha);
  19         Cvar_RegisterVariable(&crosshair_flashspeed);
  20         Cvar_RegisterVariable(&crosshair_flashrange);
  21         Cvar_RegisterVariable(&crosshair_size);
  22         Cvar_RegisterVariable(&crosshair_static);
  23 }
  24
  25 void R_GetCrosshairColor(float *out)
  26 {
  27         int i;
  28         unsigned char *color;
  29         float scale, base;
  30         if (cl.viewentity >= 1 && cl.viewentity <= cl.maxclients)
  31         {
  32                 i = (cl.scores[cl.viewentity-1].colors & 0xF) << 4;
  33                 if (i >= 208 && i < 224) // blue
  34                         i += 8;
  35                 else if (i < 128 || i >= 224) // 128-224 are backwards ranges (bright to dark, rather than dark to bright)
  36                         i += 15;
  37         }
  38         else
  39                 i = 15;
  40         color = (unsigned char *) &palette_complete[i];
  41         if (crosshair_flashspeed.value >= 0.01f)
  42                 base = (sin(realtime * crosshair_flashspeed.value * (M_PI*2.0f)) * crosshair_flashrange.value);
  43         else
  44                 base = 0.0f;
  45         scale = crosshair_brightness.value * (1.0f / 255.0f);
  46         out[0] = color[0] * scale + base;
  47         out[1] = color[1] * scale + base;
  48         out[2] = color[2] * scale + base;
  49         out[3] = crosshair_alpha.value;
  50
  51         // clamp the colors and alpha
  52         out[0] = bound(0, out[0], 1);
  53         out[1] = bound(0, out[1], 1);
  54         out[2] = bound(0, out[2], 1);
  55         out[3] = bound(0, out[3], 1.0f);
  56 }
  57
  58 void R_DrawWorldCrosshair(void)
  59 {
  60         int num;
  61         cachepic_t *pic;
  62         vec3_t v1, v2, spriteorigin;
  63         vec_t spritescale;
  64         vec4_t color;
  65         trace_t trace;
  66         if (r_letterbox.value)
  67                 return;
  68         if (crosshair_static.integer)
  69                 return;
  70         num = crosshair.integer;
  71         if (num < 1 || num > NUMCROSSHAIRS || cl.intermission)
  72                 return;
  73         if (!cl.viewentity || !cl_entities[cl.viewentity].state_current.active)
  74                 return;
  75         pic = Draw_CachePic(va("gfx/crosshair%i", num), true);
  76         if (!pic)
  77                 return;
  78         R_GetCrosshairColor(color);
  79
  80         // trace the shot path up to a certain distance
  81         Matrix4x4_OriginFromMatrix(&cl_entities[cl.viewentity].render.matrix, v1);
  82         v1[2] += 16; // HACK: this depends on the QC
  83
  84         // get the forward vector for the gun (not the view)
  85         AngleVectors(cl.viewangles, v2, NULL, NULL);
  86         //VectorCopy(r_vieworigin, v1);
  87         VectorMA(v1, 8192, v2, v2);
  88         trace = CL_TraceBox(v1, vec3_origin, vec3_origin, v2, true, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_SKY, false);
  89         spritescale = trace.fraction * (8192.0f / 40.0f) * crosshair_size.value;
  90         VectorCopy(trace.endpos, spriteorigin);
  91
  92         // draw the sprite
  93         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]);
  94 }
  95
  96 void R_Draw2DCrosshair(void)
  97 {
  98         int num;
  99         cachepic_t *pic;
 100         vec4_t color;
 101         if (r_letterbox.value)
 102                 return;
 103         if (!crosshair_static.integer)
 104                 return;
 105         num = crosshair.integer;
 106         if (num < 1 || num > NUMCROSSHAIRS || cl.intermission)
 107                 return;
 108         if (!cl.viewentity || !cl_entities[cl.viewentity].state_current.active)
 109                 return;
 110         pic = Draw_CachePic(va("gfx/crosshair%i", num), true);
 111         if (pic)
 112         {
 113                 R_GetCrosshairColor(color);
 114                 DrawQ_Pic((vid_conwidth.integer - pic->width * crosshair_size.value) * 0.5f, (vid_conheight.integer - pic->height * crosshair_size.value) * 0.5f, pic->name, pic->width * crosshair_size.value, pic->height * crosshair_size.value, color[0], color[1], color[2], color[3], 0);
 115         }
 116 }
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