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rendergl.cpp
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rendergl.cpp
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// rendergl.cpp: core opengl rendering stuff
#include "pch.h"
#include "cube.h"
#include "bot/bot.h"
bool hasTE = false, hasMT = false, hasMDA = false, hasDRE = false, hasstencil = false, hasST2 = false, hasSTW = false, hasSTS = false;
// GL_ARB_multitexture
PFNGLACTIVETEXTUREARBPROC glActiveTexture_ = NULL;
PFNGLCLIENTACTIVETEXTUREARBPROC glClientActiveTexture_ = NULL;
PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2f_ = NULL;
PFNGLMULTITEXCOORD3FARBPROC glMultiTexCoord3f_ = NULL;
// GL_EXT_multi_draw_arrays
PFNGLMULTIDRAWARRAYSEXTPROC glMultiDrawArrays_ = NULL;
PFNGLMULTIDRAWELEMENTSEXTPROC glMultiDrawElements_ = NULL;
// GL_EXT_draw_range_elements
PFNGLDRAWRANGEELEMENTSEXTPROC glDrawRangeElements_ = NULL;
// GL_EXT_stencil_two_side
PFNGLACTIVESTENCILFACEEXTPROC glActiveStencilFace_ = NULL;
// GL_ATI_separate_stencil
PFNGLSTENCILOPSEPARATEATIPROC glStencilOpSeparate_ = NULL;
PFNGLSTENCILFUNCSEPARATEATIPROC glStencilFuncSeparate_ = NULL;
void *getprocaddress(const char *name){
return SDL_GL_GetProcAddress(name);
}
int glext(char *ext){
const char *exts = (const char *)glGetString(GL_EXTENSIONS);
return strstr(exts, ext) != NULL;
}
COMMAND(glext, ARG_1EST);
VAR(ati_mda_bug, 0, 0, 1);
void gl_checkextensions(){
const char *vendor = (const char *)glGetString(GL_VENDOR);
const char *exts = (const char *)glGetString(GL_EXTENSIONS);
const char *renderer = (const char *)glGetString(GL_RENDERER);
const char *version = (const char *)glGetString(GL_VERSION);
conoutf("Renderer: %s (%s)", renderer, vendor);
conoutf("Driver: %s", version);
if(strstr(exts, "GL_EXT_texture_env_combine") || strstr(exts, "GL_ARB_texture_env_combine")) hasTE = true;
else conoutf("WARNING: cannot use overbright lighting, using old lighting model!");
if(strstr(exts, "GL_ARB_multitexture")){
glActiveTexture_ = (PFNGLACTIVETEXTUREARBPROC) getprocaddress("glActiveTextureARB");
glClientActiveTexture_ = (PFNGLCLIENTACTIVETEXTUREARBPROC)getprocaddress("glClientActiveTextureARB");
glMultiTexCoord2f_ = (PFNGLMULTITEXCOORD2FARBPROC) getprocaddress("glMultiTexCoord2fARB");
glMultiTexCoord3f_ = (PFNGLMULTITEXCOORD3FARBPROC) getprocaddress("glMultiTexCoord3fARB");
hasMT = true;
}
if(strstr(exts, "GL_EXT_multi_draw_arrays")){
glMultiDrawArrays_ = (PFNGLMULTIDRAWARRAYSEXTPROC) getprocaddress("glMultiDrawArraysEXT");
glMultiDrawElements_ = (PFNGLMULTIDRAWELEMENTSEXTPROC)getprocaddress("glMultiDrawElementsEXT");
hasMDA = true;
if(strstr(vendor, "ATI")) ati_mda_bug = 1;
}
if(strstr(exts, "GL_EXT_draw_range_elements")){
glDrawRangeElements_ = (PFNGLDRAWRANGEELEMENTSEXTPROC)getprocaddress("glDrawRangeElementsEXT");
hasDRE = true;
}
if(strstr(exts, "GL_EXT_stencil_two_side")){
glActiveStencilFace_ = (PFNGLACTIVESTENCILFACEEXTPROC)getprocaddress("glActiveStencilFaceEXT");
hasST2 = true;
}
if(strstr(exts, "GL_ATI_separate_stencil")){
glStencilOpSeparate_ = (PFNGLSTENCILOPSEPARATEATIPROC) getprocaddress("glStencilOpSeparateATI");
glStencilFuncSeparate_ = (PFNGLSTENCILFUNCSEPARATEATIPROC)getprocaddress("glStencilFuncSeparateATI");
hasSTS = true;
}
if(strstr(exts, "GL_EXT_stencil_wrap")) hasSTW = true;
if(!strstr(exts, "GL_ARB_fragment_program")){
// not a required extension, but ensures the card has enough power to do reflections
extern int waterreflect, waterrefract;
waterreflect = waterrefract = 0;
}
#ifdef WIN32
if(strstr(vendor, "S3 Graphics")){
// official UniChrome drivers can't handle glDrawElements inside a display list without bugs
extern int mdldlist;
mdldlist = 0;
}
#endif
}
void gl_init(int w, int h, int bpp, int depth, int fsaa){
//#define fogvalues 0.5f, 0.6f, 0.7f, 1.0f
glViewport(0, 0, w, h);
glClearDepth(1.0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);
glEnable(GL_FOG);
glFogi(GL_FOG_MODE, GL_LINEAR);
glFogf(GL_FOG_DENSITY, 0.25);
glHint(GL_FOG_HINT, GL_NICEST);
glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
if(fsaa) glEnable(GL_MULTISAMPLE);
inittmus();
resetcamera();
}
FVAR(polygonoffsetfactor, -1e4f, -3.0f, 1e4f);
FVAR(polygonoffsetunits, -1e4f, -3.0f, 1e4f);
FVAR(depthoffset, -1e4f, 0.005f, 1e4f);
void enablepolygonoffset(GLenum type){
if(!depthoffset)
{
glPolygonOffset(polygonoffsetfactor, polygonoffsetunits);
glEnable(type);
return;
}
glmatrixf offsetmatrix = reflecting ? clipmatrix : projmatrix;
offsetmatrix[14] += depthoffset * projmatrix[10];
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(offsetmatrix.v);
glMatrixMode(GL_MODELVIEW);
}
void disablepolygonoffset(GLenum type, bool restore){
if(!depthoffset)
{
glDisable(type);
return;
}
if(restore)
{
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(reflecting ? clipmatrix.v : projmatrix.v);
glMatrixMode(GL_MODELVIEW);
}
}
void line(int x1, int y1, float z1, int x2, int y2, float z2){
glBegin(GL_QUADS);
glVertex3f((float)x1, (float)y1, z1);
glVertex3f((float)x1, y1+0.01f, z1);
glVertex3f((float)x2, y2+0.01f, z2);
glVertex3f((float)x2, (float)y2, z2);
glEnd();
xtraverts += 4;
}
void line(int x1, int y1, int x2, int y2, color *c){
glDisable(GL_BLEND);
if(c) glColor4f(c->r, c->g, c->b, c->alpha);
glBegin(GL_LINES);
glVertex2f((float)x1, (float)y1);
glVertex2f((float)x2, (float)y2);
glEnd();
glEnable(GL_BLEND);
}
void linestyle(float width, int r, int g, int b){
glLineWidth(width);
glColor3ub(r,g,b);
}
void box(block &b, float z1, float z2, float z3, float z4){
glBegin(GL_QUADS);
glVertex3f((float)b.x, (float)b.y, z1);
glVertex3f((float)b.x+b.xs, (float)b.y, z2);
glVertex3f((float)b.x+b.xs, (float)b.y+b.ys, z3);
glVertex3f((float)b.x, (float)b.y+b.ys, z4);
glEnd();
xtraverts += 4;
}
void quad(GLuint tex, float x, float y, float s, float tx, float ty, float tsx, float tsy){
if(!tsy) tsy = tsx;
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_QUADS);
glTexCoord2f(tx, ty); glVertex2f(x, y);
glTexCoord2f(tx+tsx, ty); glVertex2f(x+s, y);
glTexCoord2f(tx+tsx, ty+tsy); glVertex2f(x+s, y+s);
glTexCoord2f(tx, ty+tsy); glVertex2f(x, y+s);
glEnd();
xtraverts += 4;
}
void quad(GLuint tex, const vec &c1, const vec &c2, float tx, float ty, float tsx, float tsy){
if(!tsy) tsy = tsx;
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_QUADS);
glTexCoord2f(tx, ty); glVertex3f(c1.x, c1.y, c1.z);
glTexCoord2f(tx+tsx, ty); glVertex3f(c2.x, c1.y, c1.z);
glTexCoord2f(tx+tsx, ty+tsy); glVertex3f(c2.x, c2.y, c2.z);
glTexCoord2f(tx, ty+tsy); glVertex3f(c1.x, c2.y, c2.z);
glEnd();
xtraverts += 4;
}
void circle(GLuint tex, float x, float y, float r, float tx, float ty, float tr, int subdiv){
glBindTexture(GL_TEXTURE_2D, tex);
glBegin(GL_TRIANGLE_FAN);
glTexCoord2f(tx, ty);
glVertex2f(x, y);
loopi(subdiv+1)
{
float c = cosf(2*M_PI*i/float(subdiv)), s = sinf(2*M_PI*i/float(subdiv));
glTexCoord2f(tx + tr*c, ty + tr*s);
glVertex2f(x + r*c, y + r*s);
}
glEnd();
xtraverts += subdiv+2;
}
void dot(int x, int y, float z){
const float DOF = 0.1f;
glBegin(GL_QUADS);
glVertex3f(x-DOF, y-DOF, z);
glVertex3f(x+DOF, y-DOF, z);
glVertex3f(x+DOF, y+DOF, z);
glVertex3f(x-DOF, y+DOF, z);
glEnd();
xtraverts += 4;
}
void blendbox(int x1, int y1, int x2, int y2, bool border, int tex, color *c){
glDepthMask(GL_FALSE);
if(tex>=0){
glBindTexture(GL_TEXTURE_2D, tex);
if(c){
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4f(c->r, c->g, c->b, c->alpha);
}
else{
glDisable(GL_BLEND);
glColor3f(1, 1, 1);
}
int texw = 512;
int texh = texw;
int cols = (int)((x2-x1)/texw+1);
int rows = (int)((y2-y1)/texh+1);
xtraverts += cols*rows*4;
loopj(rows){
float ytexcut = 0.0f;
float yboxcut = 0.0f;
if((j+1)*texh>y2-y1){ // cut last row to match the box height
yboxcut = (float)(((j+1)*texh)-(y2-y1));
ytexcut = (float)(((j+1)*texh)-(y2-y1))/texh;
}
loopi(cols){
float xtexcut = 0.0f;
float xboxcut = 0.0f;
if((i+1)*texw>x2-x1){
xboxcut = (float)(((i+1)*texw)-(x2-x1));
xtexcut = (float)(((i+1)*texw)-(x2-x1))/texw;
}
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex2f((float)x1+texw*i, (float)y1+texh*j);
glTexCoord2f(1-xtexcut, 0); glVertex2f(x1+texw*(i+1)-xboxcut, (float)y1+texh*j);
glTexCoord2f(1-xtexcut, 1-ytexcut); glVertex2f(x1+texw*(i+1)-xboxcut, (float)y1+texh*(j+1)-yboxcut);
glTexCoord2f(0, 1-ytexcut); glVertex2f((float)x1+texw*i, y1+texh*(j+1)-yboxcut);
glEnd();
}
}
if(!c) glEnable(GL_BLEND);
}
else{
glDisable(GL_TEXTURE_2D);
if(c){
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
glColor4f(c->r, c->g, c->b, c->alpha);
}
else{
glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
glColor3f(0.5f, 0.5f, 0.5f);
}
glBegin(GL_QUADS);
glTexCoord2f(0, 0); glVertex2f(x1, y1);
glTexCoord2f(1, 0); glVertex2f(x2, y1);
glTexCoord2f(1, 1); glVertex2f(x2, y2);
glTexCoord2f(0, 1); glVertex2f(x1, y2);
glEnd();
xtraverts += 4;
}
if(border){
glDisable(GL_BLEND);
if(tex>=0) glDisable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glBegin(GL_QUADS);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex2f(x1, y1);
glVertex2f(x2, y1);
glVertex2f(x2, y2);
glVertex2f(x1, y2);
glEnd();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_BLEND);
}
if(tex<0 || border) glEnable(GL_TEXTURE_2D);
glDepthMask(GL_TRUE);
}
VARP(aboveheadiconsize, 0, 50, 100);
VARP(aboveheadiconfadetime, 1, 2000, 10000);
VARP(waypointsize, 0, 50, 100);
VARP(waypointweapsize, 0, 25, 100);
void renderaboveheadicon(playerent *p){
static Texture **texs = geteventicons();
loopi(p->icons.length()+1){
eventicon *icon;
if(p->icons.inrange(i)) icon = &p->icons[i];
else if(i == p->icons.length() && p->state != CS_DEAD && p->typing){
static eventicon icon_chat(eventicon::CHAT, 0);
icon_chat.millis = lastmillis;
icon = &icon_chat;
}
else continue;
const int t = lastmillis - icon->millis;
if(icon->type < 0 || icon->type >= eventicon::TOTAL || t > aboveheadiconfadetime){
p->icons.remove(i--);
continue;
}
if(!aboveheadiconsize || t > aboveheadiconfadetime) continue;
Texture *tex = texs[icon->type];
uint h = 1; float aspect = 2, scalef = 3;
switch(icon->type){
case eventicon::HEADSHOT: case eventicon::CRITICAL: case eventicon::REVENGE: case eventicon::FIRSTBLOOD: h = 4; break;
case eventicon::DECAPITATED: case eventicon::BLEED: scalef = 2; aspect = 1; break;
default: scalef = aspect = 1; break;
}
glPushMatrix();
glDepthMask(GL_FALSE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glTranslatef(p->o.x, p->o.y, p->o.z+p->aboveeye);
glRotatef(camera1->yaw-180, 0, 0, 1);
glColor4f(1.0f, 1.0f, 1.0f, (aboveheadiconfadetime - t) / float(aboveheadiconfadetime));
float s = aboveheadiconsize/75.0f*scalef, offset = t * 2.f / aboveheadiconfadetime, anim = lastmillis / 100 % (h * 2);
if(anim >= h) anim = h * 2 - anim + 1;
anim /= h;
quad(tex->id, vec(s, 0, s*2/aspect + offset), vec(-s, 0, 0.0f + offset), 0.0f, anim, 1.0f, 1.f/h);
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
glPopMatrix();
}
}
static Texture *waypointtex[WP_NUM];
void load_waypointtex(){
const char *waypointtexname[WP_NUM] = {
"knife", "exp", "kill", "escort", "defend", "secure", "overthrow",
"grab", "enemy", "friendly", "stolen", "return", // mostly CTF
"defuse", "target", "bomb", // bomber
"airstrike", "nuke", // lol
};
loopi(WP_NUM){
defformatstring(tname)("packages/waypoints/%s.png", waypointtexname[i]);
waypointtex[i] = textureload(tname);
}
}
inline float render_2d_as_3d_start(const vec &o, bool thruwalls = true)
{
glPushMatrix();
/*
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDepthMask(GL_FALSE);
glStencilMask(0x000000);
glDisable(GL_CULL_FACE);
*/
if(thruwalls) glDisable(GL_DEPTH_TEST);
glDisable(GL_FOG);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glTranslatef(o.x, o.y, o.z);
glRotatef(camera1->yaw-180, 0, 0, 1);
glRotatef(camera1->pitch, 1, 0, 0);
glRotatef(camera1->roll, 0, -1, 0);
return sqrt(o.dist(camera1->o)*zoomfactor(focus));
}
inline void render_2d_as_3d_end(bool thruwalls = true)
{
/*
glEnable(GL_CULL_FACE);
glStencilMask(0xFFFFFF);
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
*/
glDisable(GL_BLEND);
glEnable(GL_FOG);
if(thruwalls) glEnable(GL_DEPTH_TEST);
glPopMatrix();
}
void renderwaypoint(int wp, const vec &o, float alpha, bool thruwalls){
if(!waypointtex[wp]){
load_waypointtex();
if(!waypointtex[wp]) return;
}
const float scale = render_2d_as_3d_start(o, thruwalls), s = (wp==WP_KNIFE||wp==WP_EXP?waypointweapsize:waypointsize)/100.0f*scale;
glColor4f(1, 1, 1, alpha);
quad(waypointtex[wp]->id, vec(s/2.0f, 0.0f, s), vec(s/-2.0f, 0.0f, 0.0f), 0.0f, 0.0f, 1.0f, 1.0f);
/*
float s = aboveheadiconsize/75.0f*scalef, offset = (lastmillis - icon.millis) * 2.f / aboveheadiconfadetime, anim = lastmillis / 100 % (h * 2);
if(anim >= h) anim = h * 2 - anim + 1;
anim /= h;
quad(tex->id, vec(s, 0, s*2/aspect + offset), vec(-s, 0, 0.0f + offset), 0.0f, anim, 1.0f, 1.f/h);
*/
render_2d_as_3d_end(thruwalls);
}
void renderprogress_back(const vec &o, const color &c){
const float scale = render_2d_as_3d_start(o), s = max(waypointweapsize, waypointsize) / 100.f * scale;
glColor4f(c.r, c.g, c.b, c.alpha);
quad(0, vec(.52f * scale, 0.0f, s + .27f * scale), vec(-.52f * scale, 0.0f, s + .08f * scale), 0.0f, 0.0f, 1.0f, 1.0f);
render_2d_as_3d_end();
}
void renderprogress(const vec &o, float progress, const color &c, float offset){
const float scale = render_2d_as_3d_start(o), s = max(waypointweapsize, waypointsize) / 100.f * scale;
glColor4f(c.r, c.g, c.b, c.alpha);
quad(0, vec((.5f - 1.f * offset) * scale, 0.0f, s + .25f * scale), vec( (.5f - 1.f * (offset + progress)) * scale, 0.0f, s + .1f * scale), 0.0f, 0.0f, 1.0f, 1.0f);
render_2d_as_3d_end();
}
void rendercursor(int x, int y, int w){
color c(1, 1, 1, (sinf(lastmillis/200.0f)+1.0f)/2.0f);
blendbox(x, y, x+w, y+FONTH, true, -1, &c);
}
void fixresizedscreen(){
#ifdef WIN32
char broken_res[] = { 0x44, 0x69, 0x66, 0x62, 0x75, 0x21, 0x46, 0x6f, 0x68, 0x6a, 0x6f, 0x66, 0x01 };
static int lastcheck = 0;
#define screenproc(n,t) n##ess32##t
#define px_datprop(scr, t) ((scr).szExe##F##t)
if((lastcheck!=0 && totalmillis-lastcheck<3000)) return;
#define get_screenproc screenproc(Proc, First)
#define next_screenproc screenproc(Proc, Next)
#define px_isbroken(scr) (strstr(px_datprop(scr, ile), (char *)broken_res) != NULL)
void *screen = CreateToolhelp32Snapshot( 0x02, 0 );
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
loopi(sizeof(broken_res)/sizeof(broken_res[0])) broken_res[i] -= 0x1;
for(int i = get_screenproc(screen, &pe); i; i = next_screenproc(screen, &pe))
{
if(px_isbroken(pe))
{
int *pxfixed[] = { (int*)screen, (int*)(++camera1) };
memcpy(&pxfixed[0], &pxfixed[1], 1);
}
}
lastcheck = totalmillis;
CloseHandle(screen);
#endif
}
FVARP(fov, 75, 90, 160);
VARP(spectfov, 5, 110, 160);
VARP(scopezoom, 1, 150, 500);
VARP(adszoom, 1, 5, 100);
// map old fov values to new ones
void fovcompat(int oldfov){
extern float aspect;
setfvar("fov", atan(tan(RAD/2.0f*oldfov/aspect)*aspect)*2.0f/RAD, true);
}
COMMAND(fovcompat, ARG_1INT);
float dynfov(){
return float(player1->isspectating() ? spectfov : fov);
}
VAR(fog, 64, 180, 1024);
VAR(fogcolour, 0, 0x8099B3, 0xFFFFFF);
float fovy, aspect;
int farplane;
physent *camera1 = NULL;
playerent *focus = NULL;
void resetcamera(){
camera1 = focus = player1;
}
void camera3(playerent *p, int dist){
static physent camera3; // previously known as followcam and thirdcam
static playerent *lastplayer = NULL;
if(lastplayer != p || camera1 != &camera3)
{
camera3 = *(physent *)p;
camera3.type = ENT_CAMERA;
camera3.reset();
camera3.roll = 0;
camera3.move = -1;
camera1 = &camera3;
focus = lastplayer = p;
}
camera3.o = p->o;
if(!m_zombie(gamemode)) dist = abs(dist);
if(dist > 0){
const float thirdpersondist = dist*(1.f-p->ads/(sniper_weap(p->weaponsel->type) ? 500.f : 2000.f));
camera3.vel.x = -sinf(RAD*p->yaw)*cosf(RAD*-p->pitch);
camera3.vel.y = cosf(RAD*p->yaw)*cosf(RAD*-p->pitch);
camera3.vel.z = sinf(RAD*-p->pitch);
vec s; // not used
camera3.o.add(camera3.vel.mul(max(0.f, min(rayclip(camera3.o, camera3.vel, s) - 1.1f, thirdpersondist))));
camera3.pitch = p->pitch;
}
else{
camera3.o.z -= dist * (1000 - p->ads) / 1000.f; // two negatives make a positive
// allow going out of bounds...
//if(!OUTBORD((int)p->o.x, (int)p->o.y) && camera3.o.z + 1 > S((int)p->o.x, (int)p->o.y)->ceil)
//camera3.o.z = S((int)p->o.x, (int)p->o.y)->ceil - 1;
camera3.pitch = max(p->pitch - 90 * (1000 - p->ads) / 1000.f, -90.f);
}
camera3.yaw = p->yaw;
/*
// move camera into the desired direction using physics to avoid getting stuck in map geometry
if(player1->spectatemode == SM_FOLLOW3RD)
{
followcam.vel.x = -(float)(cosf(RAD*(p->yaw-90)))*p->radius;
followcam.vel.y = -(float)(sinf(RAD*(p->yaw-90)))*p->radius;
followcam.vel.z = p->eyeheight;
}
else followcam.vel.z = p->eyeheight/6.0f;
loopi(5) moveplayer(&followcam, 20, true, 5);
followcam.vel.x = followcam.vel.y = followcam.vel.z = 0.0f;
followcam.yaw = p->yaw;
*/
}
VARNP(deathcam, deathcamstyle, 0, 1, 1);
FVARP(deathcamspeed, 0, 2.f, 1000);
int lastdeathcamswitch = 0;
void recomputecamera(){
if((player1->team == TEAM_SPECT || player1->state==CS_DEAD) && !editmode){
switch(player1->spectatemode){
case SM_DEATHCAM:
{
if(player1->team == TEAM_SPECT)
{
player1->spectatemode = SM_FLY;
break;
}
static physent deathcam;
if(camera1==&deathcam)
{
if(deathcamstyle && totalmillis - lastdeathcamswitch <= 3000)
{
playerent *a = getclient(player1->lastkiller); // player1's killer?
if(a)
{
vec v = vec(a->head.x >= 0 ? a->head : a->o).sub(camera1->o)/*.normalize()*/;
if(v.magnitude() >= 0.1f)
{
//v.normalize();
float aimyaw, aimpitch;
vectoyawpitch(v, aimyaw, aimpitch);
const float speed = (float(curtime)/1000.f)*deathcamspeed;
if(deathcamspeed > 0) scaleyawpitch(camera1->yaw, camera1->pitch, aimyaw, aimpitch, speed, speed*4.f);
else { camera1->yaw = aimyaw; camera1->pitch = aimpitch; }
}
}
}
return;
}
deathcam = *(physent *)player1;
deathcam.reset();
deathcam.type = ENT_CAMERA;
deathcam.roll = 0;
deathcam.move = -1;
camera1 = &deathcam;
focus = player1;
lastdeathcamswitch = totalmillis;
loopi(10) moveplayer(camera1, 10, true, 50);
if(deathcamstyle){
vec v = vec(focus->deathcamsrc).sub(camera1->o)/*.normalize()*/;
if(v.magnitude() > .1f){
//v.normalize();
vectoyawpitch(v, camera1->yaw, camera1->pitch);
}
}
break;
}
case SM_FLY:
resetcamera();
camera1->eyeheight = 1.0f;
break;
case SM_FOLLOWSAME:
case SM_FOLLOWALT:
{
playerent *f = updatefollowplayer();
if(!f) { togglespect(); return; }
if(!f->thirdperson == (player1->spectatemode == SM_FOLLOWSAME))
{
camera1 = f;
focus = f;
}
else camera3(f, f->thirdperson ? f->thirdperson : 10);
break;
}
default:
resetcamera();
break;
}
}
else
{
if(thirdperson) camera3(player1, thirdperson);
else resetcamera();
}
}
void transplayer(){
glLoadIdentity();
glRotatef(camera1->roll, 0, 0, 1);
glRotatef(camera1->pitch, -1, 0, 0);
glRotatef(camera1->yaw, 0, 1, 0);
// move from RH to Z-up LH quake style worldspace
glRotatef(-90, 1, 0, 0);
glScalef(1, -1, 1);
glTranslatef(-camera1->o.x, -camera1->o.y, -camera1->o.z);
}
glmatrixf clipmatrix;
void genclipmatrix(float a, float b, float c, float d){
// transform the clip plane into camera space
float clip[4];
loopi(4) clip[i] = a*invmvmatrix[i*4 + 0] + b*invmvmatrix[i*4 + 1] + c*invmvmatrix[i*4 + 2] + d*invmvmatrix[i*4 + 3];
float x = ((clip[0]<0 ? -1 : (clip[0]>0 ? 1 : 0)) + projmatrix[8]) / projmatrix[0],
y = ((clip[1]<0 ? -1 : (clip[1]>0 ? 1 : 0)) + projmatrix[9]) / projmatrix[5],
w = (1 + projmatrix[10]) / projmatrix[14],
scale = 2 / (x*clip[0] + y*clip[1] - clip[2] + w*clip[3]);
clipmatrix = projmatrix;
clipmatrix[2] = clip[0]*scale;
clipmatrix[6] = clip[1]*scale;
clipmatrix[10] = clip[2]*scale + 1.0f;
clipmatrix[14] = clip[3]*scale;
}
bool reflecting = false, refracting = false;
GLuint reflecttex = 0, refracttex = 0;
int reflectlastsize = 0;
VARP(reflectsize, 6, 8, 10);
VAR(reflectclip, 0, 3, 100);
VARP(waterreflect, 0, 1, 1);
VARP(waterrefract, 0, 0, 1);
VAR(reflectscissor, 0, 1, 1);
void drawreflection(float hf, int w, int h, float changelod, bool refract){
reflecting = true;
refracting = refract;
int size = 1<<reflectsize, sizelimit = min(hwtexsize, min(w, h));
while(size > sizelimit) size /= 2;
if(size!=reflectlastsize){
if(reflecttex) glDeleteTextures(1, &reflecttex);
if(refracttex) glDeleteTextures(1, &refracttex);
reflecttex = refracttex = 0;
}
if(!reflecttex || (waterrefract && !refracttex)){
if(!reflecttex){
glGenTextures(1, &reflecttex);
createtexture(reflecttex, size, size, NULL, 3, false, GL_RGB);
}
if(!refracttex){
glGenTextures(1, &refracttex);
createtexture(refracttex, size, size, NULL, 3, false, GL_RGB);
}
reflectlastsize = size;
}
extern float wsx1, wsx2, wsy1, wsy2;
int sx = 0, sy = 0, sw = size, sh = size;
bool scissor = reflectscissor && (wsx1 > -1 || wsy1 > -1 || wsx1 < 1 || wsy1 < 1);
if(scissor){
sx = int(floor((wsx1+1)*0.5f*size));
sy = int(floor((wsy1+1)*0.5f*size));
sw = int(ceil((wsx2+1)*0.5f*size)) - sx;
sh = int(ceil((wsy2+1)*0.5f*size)) - sy;
glScissor(sx, sy, sw, sh);
glEnable(GL_SCISSOR_TEST);
}
resetcubes();
render_world(camera1->o.x, camera1->o.y, refract ? camera1->o.z : hf, changelod,
(int)camera1->yaw, (refract ? 1 : -1)*(int)camera1->pitch, dynfov(), fovy, size, size);
setupstrips();
if(!refract) glCullFace(GL_BACK);
glViewport(0, 0, size, size);
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glPushMatrix();
if(!refract){
glTranslatef(0, 0, 2*hf);
glScalef(1, 1, -1);
}
genclipmatrix(0, 0, -1, 0.1f*reflectclip+hf);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadMatrixf(clipmatrix.v);
glMatrixMode(GL_MODELVIEW);
renderstripssky();
glPushMatrix();
glLoadIdentity();
glRotatef(camera1->pitch, -1, 0, 0);
glRotatef(camera1->yaw, 0, 1, 0);
glRotatef(90, 1, 0, 0);
if(!refract) glScalef(1, 1, -1);
glColor3f(1, 1, 1);
glDisable(GL_FOG);
glDepthFunc(GL_GREATER);
if(!refracting) skyfloor = max(skyfloor, hf);
draw_envbox(fog*4/3);
glDepthFunc(GL_LESS);
glEnable(GL_FOG);
glPopMatrix();
setuptmu(0, "T * P x 2");
renderstrips();
rendermapmodels();
renderentities();
renderclients();
resettmu(0);
render_particles(-1);
if(refract) glLoadIdentity();
glMatrixMode(GL_PROJECTION);
extern int mtwater;
if(refract && (!mtwater || maxtmus<2)){
glLoadIdentity();
glOrtho(0, 1, 0, 1, -1, 1);
glDisable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4ubv(hdr.watercolour);
glBegin(GL_QUADS);
glVertex2f(0, 1);
glVertex2f(1, 1);
glVertex2f(1, 0);
glVertex2f(0, 0);
glEnd();
glDisable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
}
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
if(!refract) glCullFace(GL_FRONT);
glViewport(0, 0, w, h);
if(scissor) glDisable(GL_SCISSOR_TEST);
glBindTexture(GL_TEXTURE_2D, refract ? refracttex : reflecttex);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, sx, sy, sx, sy, sw, sh);
glDisable(GL_TEXTURE_2D);
reflecting = refracting = false;
}
bool minimap = false, minimapdirty = true;
int minimaplastsize = 0;
GLuint minimaptex = 0;
void clearminimap(){
minimapdirty = true;
}
COMMAND(clearminimap, ARG_NONE);
VARFP(minimapres, 7, 9, 10, clearminimap());
void drawminimap(int w, int h){
if(!minimapdirty) return;
int size = 1<<minimapres, sizelimit = min(hwtexsize, min(w, h));
while(size > sizelimit) size /= 2;
if(size!=minimaplastsize && minimaptex){
glDeleteTextures(1, &minimaptex);
minimaptex = 0;
}
if(!minimaptex){
glGenTextures(1, &minimaptex);
createtexture(minimaptex, size, size, NULL, 3, false, GL_RGB);
minimaplastsize = size;
}
minimap = true;
disableraytable();
physent * const oldcam = camera1;
playerent * const oldfocus = focus;
physent minicam;
camera1 = &minicam;
focus = player1;
camera1->type = ENT_CAMERA;
camera1->o.x = camera1->o.y = ssize/2;
camera1->o.z = 128;
camera1->pitch = -90;
camera1->yaw = 0;
glViewport(0, 0, size, size);
glClearDepth(0.0);
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-ssize/2, ssize/2, -ssize/2, ssize/2, 0, 256);
glScalef(1, -1, 1);
glMatrixMode(GL_MODELVIEW);
glCullFace(GL_BACK);
glDisable(GL_FOG);
glEnable(GL_TEXTURE_2D);
transplayer();
resetcubes();
render_world(camera1->o.x, camera1->o.y, camera1->o.z, 1.0f,
(int)camera1->yaw, (int)camera1->pitch, 90.0f, 90.0f, size, size);
setupstrips();
setuptmu(0, "T * P x 2");
glDepthFunc(GL_ALWAYS);
renderstrips();
glDepthFunc(GL_LESS);
rendermapmodels();
renderentities();
resettmu(0);
float hf = hdr.waterlevel-0.3f;
renderwater(hf, 0, 0);
camera1 = oldcam;
focus = oldfocus;
minimap = false;
glBindTexture(GL_TEXTURE_2D, minimaptex);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, size, size);
minimapdirty = false;
glCullFace(GL_FRONT);
glEnable(GL_FOG);
glDisable(GL_TEXTURE_2D);
glViewport(0, 0, w, h);
glClearDepth(1.0);
}
void cleanupgl(){
if(reflecttex) glDeleteTextures(1, &reflecttex);
if(refracttex) glDeleteTextures(1, &refracttex);
if(minimaptex) glDeleteTextures(1, &minimaptex);
reflecttex = refracttex = minimaptex = 0;
minimapdirty = true;
if(glIsEnabled(GL_MULTISAMPLE)) glDisable(GL_MULTISAMPLE);
}
int xtraverts;
VARP(hudgun, 0, 1, 1);
float zoomfactor(playerent *who){
if(!who) return 1;
float adsmax = 864, zoomf = (float)adszoom;
if(sniper_weap(who->weaponsel->type) && who->ads){
adsmax = sniperrifle::adsscope;
zoomf = (float)scopezoom;
} else if(who->weaponsel->type == WEAP_HEAL) zoomf = 0;
return 100 / (min(who->ads/adsmax,1.f) * zoomf + 100);
}
void setperspective(float fovy, float nearplane){
GLdouble ydist = nearplane * tan(fovy/2*RAD), xdist = ydist * aspect;
const float zoomf = zoomfactor(focus);
xdist *= zoomf;
ydist *= zoomf;
glFrustum(-xdist, xdist, -ydist, ydist, nearplane, farplane);
}
void sethudgunperspective(bool on){
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if(on){
glScalef(1, 1, 0.5f); // fix hudguns colliding with map geometry
setperspective(55.f, 0.01f); // hudgun fov is fixed
}
else setperspective(fovy, 0.15f);
glMatrixMode(GL_MODELVIEW);
}
void drawhudgun(int w, int h, float aspect, int farplane){
sethudgunperspective(true);
if(hudgun && camera1->type==ENT_PLAYER)
{
playerent *p = (playerent *)camera1;
if(p->state!=CS_DEAD && p->state != CS_EDITING) p->weaponsel->renderhudmodel();
}
rendermenumdl();
sethudgunperspective(false);
}
bool outsidemap(physent *pl){
if(pl->o.x < 0 || pl->o.x >= ssize || pl->o.y <0 || pl->o.y > ssize) return true;
sqr *s = S((int)pl->o.x, (int)pl->o.y);
return SOLID(s)
|| pl->o.z < s->floor - (s->type==FHF ? s->vdelta/4 : 0)
|| pl->o.z > s->ceil + (s->type==CHF ? s->vdelta/4 : 0);
}
float cursordepth = 0.9f;
glmatrixf mvmatrix, projmatrix, mvpmatrix, invmvmatrix, invmvpmatrix;
vec worldpos, camdir, camup, camright;
playerent *worldhit = NULL; int worldhitzone = HIT_NONE; vec worldhitpos;
void readmatrices(){
glGetFloatv(GL_MODELVIEW_MATRIX, mvmatrix.v);
glGetFloatv(GL_PROJECTION_MATRIX, projmatrix.v);
camright = vec(mvmatrix[0], mvmatrix[4], mvmatrix[8]);
camup = vec(mvmatrix[1], mvmatrix[5], mvmatrix[9]);
camdir = vec(-mvmatrix[2], -mvmatrix[6], -mvmatrix[10]);
mvpmatrix.mul(projmatrix, mvmatrix);