qcsrc/common/mutators/mutator/dodging/dodging.qc

   1 #ifdef IMPLEMENTATION
   2
   3 #define PHYS_DODGING                                            STAT(DODGING, this)
   4 #define PHYS_DODGING_DELAY                                      STAT(DODGING_DELAY, this)
   5 #define PHYS_DODGING_DISTANCE_THRESHOLD         STAT(DODGING_DISTANCE_THRESHOLD, this)
   6 #define PHYS_DODGING_FROZEN_NODOUBLETAP         STAT(DODGING_FROZEN_NO_DOUBLETAP, this)
   7 #define PHYS_DODGING_HEIGHT_THRESHOLD           STAT(DODGING_HEIGHT_THRESHOLD, this)
   8 #define PHYS_DODGING_HORIZ_SPEED                        STAT(DODGING_HORIZ_SPEED, this)
   9 #define PHYS_DODGING_HORIZ_SPEED_FROZEN         STAT(DODGING_HORIZ_SPEED_FROZEN, this)
  10 #define PHYS_DODGING_RAMP_TIME                          STAT(DODGING_RAMP_TIME, this)
  11 #define PHYS_DODGING_UP_SPEED                           STAT(DODGING_UP_SPEED, this)
  12 #define PHYS_DODGING_WALL                                       STAT(DODGING_WALL, this)
  13 #define PHYS_DODGING_AIR                                        STAT(DODGING_AIR, this)
  14 #define PHYS_DODGING_PRESSED_KEYS(s)            (s).pressedkeys
  15
  16 #ifdef CSQC
  17         #define PHYS_DODGING_FRAMETIME                          (1 / (frametime <= 0 ? 60 : frametime))
  18         #define PHYS_DODGING_TIMEOUT(s)                         STAT(DODGING_TIMEOUT)
  19 #elif defined(SVQC)
  20         #define PHYS_DODGING_FRAMETIME                          sys_frametime
  21         #define PHYS_DODGING_TIMEOUT(s)                         s.cvar_cl_dodging_timeout
  22 #endif
  23
  24 #ifdef SVQC
  25
  26 bool autocvar_sv_dodging_sound;
  27
  28 // set to 1 to indicate dodging has started.. reset by physics hook after dodge has been done..
  29 .float dodging_action;
  30
  31 // the jump part of the dodge cannot be ramped
  32 .float dodging_single_action;
  33
  34 #include <common/animdecide.qh>
  35 #include <common/physics/player.qh>
  36
  37 .float cvar_cl_dodging_timeout = _STAT(DODGING_TIMEOUT);
  38
  39 REGISTER_MUTATOR(dodging, cvar("g_dodging"))
  40 {
  41         // this just turns on the cvar.
  42         MUTATOR_ONADD
  43         {
  44                 g_dodging = cvar("g_dodging");
  45         }
  46
  47         // this just turns off the cvar.
  48         MUTATOR_ONROLLBACK_OR_REMOVE
  49         {
  50                 g_dodging = 0;
  51         }
  52
  53         return false;
  54 }
  55
  56 #elif defined(CSQC)
  57 REGISTER_MUTATOR(dodging, true);
  58 #endif
  59
  60 // set to 1 to indicate dodging has started.. reset by physics hook after dodge has been done..
  61 .float dodging_action;
  62
  63 // the jump part of the dodge cannot be ramped
  64 .float dodging_single_action;
  65
  66
  67 // these are used to store the last key press time for each of the keys..
  68 .float last_FORWARD_KEY_time;
  69 .float last_BACKWARD_KEY_time;
  70 .float last_LEFT_KEY_time;
  71 .float last_RIGHT_KEY_time;
  72
  73 // these store the movement direction at the time of the dodge action happening.
  74 .vector dodging_direction;
  75
  76 // this indicates the last time a dodge was executed. used to check if another one is allowed
  77 // and to ramp up the dodge acceleration in the physics hook.
  78 .float last_dodging_time;
  79
  80 // This is the velocity gain to be added over the ramp time.
  81 // It will decrease from frame to frame during dodging_action = 1
  82 // until it's 0.
  83 .float dodging_velocity_gain;
  84
  85 #ifdef CSQC
  86 .int pressedkeys;
  87 #endif
  88
  89 // returns 1 if the player is close to a wall
  90 bool check_close_to_wall(entity this, float threshold)
  91 {
  92         if (PHYS_DODGING_WALL == 0) { return false; }
  93
  94 #define X(OFFSET) \
  95         tracebox(this.origin, this.mins, this.maxs, this.origin + OFFSET, true, this); \
  96         if(trace_fraction < 1 && vdist(this.origin - trace_endpos, <, threshold)) \
  97                 return true;
  98         X(1000*v_right);
  99         X(-1000*v_right);
 100         X(1000*v_forward);
 101         X(-1000*v_forward);
 102 #undef X
 103
 104         return false;
 105 }
 106
 107 bool check_close_to_ground(entity this, float threshold)
 108 {
 109         return IS_ONGROUND(this) ? true : false;
 110 }
 111
 112 float PM_dodging_checkpressedkeys(entity this)
 113 {
 114         if(!PHYS_DODGING)
 115                 return false;
 116
 117         float frozen_dodging = (PHYS_FROZEN(this) && PHYS_DODGING_FROZEN(this));
 118         float frozen_no_doubletap = (frozen_dodging && !PHYS_DODGING_FROZEN_NODOUBLETAP);
 119
 120         // first check if the last dodge is far enough back in time so we can dodge again
 121         if ((time - this.last_dodging_time) < PHYS_DODGING_DELAY)
 122                 return false;
 123
 124         makevectors(this.angles);
 125
 126         if(!PHYS_DODGING_AIR)
 127         if (check_close_to_ground(this, PHYS_DODGING_HEIGHT_THRESHOLD) != 1
 128                 && check_close_to_wall(this, PHYS_DODGING_DISTANCE_THRESHOLD) != 1)
 129                 return true;
 130
 131         float tap_direction_x = 0;
 132         float tap_direction_y = 0;
 133         bool dodge_detected = false;
 134
 135         #define X(COND,BTN,RESULT)                                                                                                                      \
 136         if (this.movement_##COND)                                                                                               \
 137                 /* is this a state change? */                                                                                                   \
 138                 if(!(PHYS_DODGING_PRESSED_KEYS(this) & KEY_##BTN) || frozen_no_doubletap) {             \
 139                                 tap_direction_##RESULT;                                                                                                 \
 140                                 if ((time - this.last_##BTN##_KEY_time) < PHYS_DODGING_TIMEOUT(this) || frozen_no_doubletap)    \
 141                                         dodge_detected = true;                                                                                                  \
 142                                 this.last_##BTN##_KEY_time = time;                                                                              \
 143                 }
 144         X(x < 0, BACKWARD,      x--);
 145         X(x > 0, FORWARD,       x++);
 146         X(y < 0, LEFT,          y--);
 147         X(y > 0, RIGHT,         y++);
 148         #undef X
 149
 150         if (dodge_detected)
 151         {
 152                 this.last_dodging_time = time;
 153
 154                 this.dodging_action = 1;
 155                 this.dodging_single_action = 1;
 156
 157                 this.dodging_velocity_gain = PHYS_DODGING_HORIZ_SPEED;
 158
 159                 this.dodging_direction_x = tap_direction_x;
 160                 this.dodging_direction_y = tap_direction_y;
 161
 162                 // normalize the dodging_direction vector.. (unlike UT99) XD
 163                 float length = this.dodging_direction_x * this.dodging_direction_x
 164                                         + this.dodging_direction_y * this.dodging_direction_y;
 165                 length = sqrt(length);
 166
 167                 this.dodging_direction_x = this.dodging_direction_x * 1.0 / length;
 168                 this.dodging_direction_y = this.dodging_direction_y * 1.0 / length;
 169                 return true;
 170         }
 171         return false;
 172 }
 173
 174 void PM_dodging(entity this)
 175 {
 176         if (!PHYS_DODGING)
 177                 return;
 178
 179     if (IS_DEAD(this))
 180         return;
 181
 182         // when swimming, no dodging allowed..
 183         if (this.waterlevel >= WATERLEVEL_SWIMMING)
 184         {
 185                 this.dodging_action = 0;
 186                 this.dodging_direction_x = 0;
 187                 this.dodging_direction_y = 0;
 188                 return;
 189         }
 190
 191         // make sure v_up, v_right and v_forward are sane
 192         if(PHYS_DODGING_AIR)
 193                 makevectors(this.v_angle);
 194         else
 195                 makevectors(this.angles);
 196
 197         // if we have e.g. 0.5 sec ramptime and a frametime of 0.25, then the ramp code
 198         // will be called ramp_time/frametime times = 2 times. so, we need to
 199         // add 0.5 * the total speed each frame until the dodge action is done..
 200         float common_factor = PHYS_DODGING_FRAMETIME / PHYS_DODGING_RAMP_TIME;
 201
 202         // if ramp time is smaller than frametime we get problems ;D
 203         common_factor = min(common_factor, 1);
 204
 205         float horiz_speed = PHYS_FROZEN(this) ? PHYS_DODGING_HORIZ_SPEED_FROZEN : PHYS_DODGING_HORIZ_SPEED;
 206         float new_velocity_gain = this.dodging_velocity_gain - (common_factor * horiz_speed);
 207         new_velocity_gain = max(0, new_velocity_gain);
 208
 209         float velocity_difference = this.dodging_velocity_gain - new_velocity_gain;
 210
 211         // ramp up dodging speed by adding some velocity each frame.. TODO: do it! :D
 212         if (this.dodging_action == 1)
 213         {
 214                 //disable jump key during dodge accel phase
 215                 if(this.movement_z > 0) { this.movement_z = 0; }
 216
 217                 this.velocity += ((this.dodging_direction_y * velocity_difference) * v_right)
 218                                         + ((this.dodging_direction_x * velocity_difference) * v_forward);
 219
 220                 this.dodging_velocity_gain = this.dodging_velocity_gain - velocity_difference;
 221         }
 222
 223         // the up part of the dodge is a single shot action
 224         if (this.dodging_single_action == 1)
 225         {
 226                 UNSET_ONGROUND(this);
 227
 228                 this.velocity += PHYS_DODGING_UP_SPEED * v_up;
 229
 230 #ifdef SVQC
 231                 if (autocvar_sv_dodging_sound)
 232                         PlayerSound(this, playersound_jump, CH_PLAYER, VOL_BASE, VOICETYPE_PLAYERSOUND);
 233
 234                 animdecide_setaction(this, ANIMACTION_JUMP, true);
 235 #endif
 236
 237                 this.dodging_single_action = 0;
 238         }
 239
 240         // are we done with the dodging ramp yet?
 241         if((this.dodging_action == 1) && ((time - this.last_dodging_time) > PHYS_DODGING_RAMP_TIME))
 242         {
 243                 // reset state so next dodge can be done correctly
 244                 this.dodging_action = 0;
 245                 this.dodging_direction_x = 0;
 246                 this.dodging_direction_y = 0;
 247         }
 248 }
 249
 250 void PM_dodging_GetPressedKeys(entity this)
 251 {
 252 #ifdef CSQC
 253         if(!PHYS_DODGING) { return; }
 254
 255         PM_dodging_checkpressedkeys(this);
 256
 257         int keys = this.pressedkeys;
 258         keys = BITSET(keys, KEY_FORWARD,        this.movement.x > 0);
 259         keys = BITSET(keys, KEY_BACKWARD,       this.movement.x < 0);
 260         keys = BITSET(keys, KEY_RIGHT,          this.movement.y > 0);
 261         keys = BITSET(keys, KEY_LEFT,           this.movement.y < 0);
 262
 263         keys = BITSET(keys, KEY_JUMP,           PHYS_INPUT_BUTTON_JUMP(this));
 264         keys = BITSET(keys, KEY_CROUCH,         PHYS_INPUT_BUTTON_CROUCH(this));
 265         keys = BITSET(keys, KEY_ATCK,           PHYS_INPUT_BUTTON_ATCK(this));
 266         keys = BITSET(keys, KEY_ATCK2,          PHYS_INPUT_BUTTON_ATCK2(this));
 267         this.pressedkeys = keys;
 268 #endif
 269 }
 270
 271 MUTATOR_HOOKFUNCTION(dodging, PlayerPhysics)
 272 {
 273     entity player = M_ARGV(0, entity);
 274
 275         // print("dodging_PlayerPhysics\n");
 276         PM_dodging_GetPressedKeys(player);
 277         PM_dodging(player);
 278 }
 279
 280 #ifdef SVQC
 281
 282 REPLICATE(cvar_cl_dodging_timeout, float, "cl_dodging_timeout");
 283
 284 MUTATOR_HOOKFUNCTION(dodging, GetPressedKeys)
 285 {
 286         entity player = M_ARGV(0, entity);
 287
 288         PM_dodging_checkpressedkeys(player);
 289 }
 290
 291 #endif
 292 #endif