-/*
-=============
-V_UpdateBlends
-=============
-*/
-void V_UpdateBlends (void)
-{
- float r, g, b, a, a2;
- int j;
-
- if (cl.worldmodel == NULL)
- {
- cl.cshifts[CSHIFT_DAMAGE].percent = 0;
- cl.cshifts[CSHIFT_BONUS].percent = 0;
- cl.cshifts[CSHIFT_CONTENTS].percent = 0;
- cl.cshifts[CSHIFT_POWERUP].percent = 0;
- r_refdef.viewblend[0] = 0;
- r_refdef.viewblend[1] = 0;
- r_refdef.viewblend[2] = 0;
- r_refdef.viewblend[3] = 0;
- return;
- }
-
- // drop the damage value
- cl.cshifts[CSHIFT_DAMAGE].percent -= (cl.time - cl.oldtime)*150;
- if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
- cl.cshifts[CSHIFT_DAMAGE].percent = 0;
-
- // drop the bonus value
- cl.cshifts[CSHIFT_BONUS].percent -= (cl.time - cl.oldtime)*100;
- if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
- cl.cshifts[CSHIFT_BONUS].percent = 0;
-
- // set contents color
- switch (Mod_PointInLeaf (r_refdef.vieworg, cl.worldmodel)->contents)
- {
- case CONTENTS_EMPTY:
- case CONTENTS_SOLID:
- cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = v_cshift.destcolor[0];
- cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = v_cshift.destcolor[1];
- cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = v_cshift.destcolor[2];
- cl.cshifts[CSHIFT_CONTENTS].percent = v_cshift.percent;
- break;
- case CONTENTS_LAVA:
- cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 255;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 0;
- cl.cshifts[CSHIFT_CONTENTS].percent = 150;
- break;
- case CONTENTS_SLIME:
- cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 0;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 25;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 5;
- cl.cshifts[CSHIFT_CONTENTS].percent = 150;
- break;
- default:
- cl.cshifts[CSHIFT_CONTENTS].destcolor[0] = 130;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[1] = 80;
- cl.cshifts[CSHIFT_CONTENTS].destcolor[2] = 50;
- cl.cshifts[CSHIFT_CONTENTS].percent = 128;
- }
-
- if (cl.items & IT_QUAD)
- {
- cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
- cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 0;
- cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 255;
- cl.cshifts[CSHIFT_POWERUP].percent = 30;
- }
- else if (cl.items & IT_SUIT)
- {
- cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 0;
- cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
- cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
- cl.cshifts[CSHIFT_POWERUP].percent = 20;
- }
- else if (cl.items & IT_INVISIBILITY)
- {
- cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 100;
- cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 100;
- cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 100;
- cl.cshifts[CSHIFT_POWERUP].percent = 100;
- }
- else if (cl.items & IT_INVULNERABILITY)
- {
- cl.cshifts[CSHIFT_POWERUP].destcolor[0] = 255;
- cl.cshifts[CSHIFT_POWERUP].destcolor[1] = 255;
- cl.cshifts[CSHIFT_POWERUP].destcolor[2] = 0;
- cl.cshifts[CSHIFT_POWERUP].percent = 30;
- }
- else
- cl.cshifts[CSHIFT_POWERUP].percent = 0;
-
- // LordHavoc: fixed V_CalcBlend
- r = 0;
- g = 0;
- b = 0;
- a = 0;
-
- for (j=0 ; j<NUM_CSHIFTS ; j++)
- {
- a2 = cl.cshifts[j].percent * (1.0f / 255.0f);
-
- if (a2 < 0)
- continue;
- if (a2 > 1)
- a2 = 1;
- r += (cl.cshifts[j].destcolor[0]-r) * a2;
- g += (cl.cshifts[j].destcolor[1]-g) * a2;
- b += (cl.cshifts[j].destcolor[2]-b) * a2;
- a = 1 - (1 - a) * (1 - a2); // correct alpha multiply... took a while to find it on the web
- }
- // saturate color (to avoid blending in black)
- if (a)
- {
- a2 = 1 / a;
- r *= a2;
- g *= a2;
- b *= a2;
- }
-
- r_refdef.viewblend[0] = bound(0, r * (1.0/255.0), 1);
- r_refdef.viewblend[1] = bound(0, g * (1.0/255.0), 1);
- r_refdef.viewblend[2] = bound(0, b * (1.0/255.0), 1);
- r_refdef.viewblend[3] = bound(0, a , 1);
-}
-