qcsrc/server/mutators/mutator_dodging.qc

   1
   2 // these are used to store the last key press time for each of the keys..
   3 .float last_FORWARD_KEY_time;
   4 .float last_BACKWARD_KEY_time;
   5 .float last_LEFT_KEY_time;
   6 .float last_RIGHT_KEY_time;
   7
   8 // these store the movement direction at the time of the dodge action happening.
   9 .float dodging_direction_x;
  10 .float dodging_direction_y;
  11
  12 // this indicates the last time a dodge was executed. used to check if another one is allowed
  13 // and to ramp up the dodge acceleration in the physics hook.
  14 .float last_dodging_time;
  15
  16 // set to 1 to indicate dodging has started.. reset by physics hook after dodge has been done..
  17 .float dodging_action;
  18
  19 void dodging_Initialize() {
  20         self.last_FORWARD_KEY_time = 0;
  21         self.last_BACKWARD_KEY_time = 0;
  22         self.last_RIGHT_KEY_time = 0;
  23         self.last_LEFT_KEY_time = 0;
  24         self.last_dodging_time = 0;
  25         self.dodging_action = 0;
  26         self.dodging_direction_x = 0;
  27         self.dodging_direction_y = 0;
  28 }
  29
  30 MUTATOR_HOOKFUNCTION(dodging_PlayerPhysics) {
  31         // print("physics hook\n");
  32         if (g_dodging == 0)
  33                 return 0;
  34
  35         // ramp up dodging speed by adding some velocity each frame..
  36         if (self.dodging_action == 1) {
  37                 self.velocity = self.velocity + self.dodging_direction_y * (cvar("sv_dodging_horiz_speed") * v_right) + self.dodging_direction_x * (cvar("sv_dodging_horiz_speed") * v_forward) + (cvar("sv_dodging_up_speed") * v_up);
  38                 self.dodging_action = 0;
  39         }
  40
  41         // are we done with the dodging ramp yet?
  42         if((self.dodging_action == 1) && ((time - self.last_dodging_time) > cvar("sv_dodging_ramp_time")))
  43                 self.dodging_action = 0;
  44
  45         return 0;
  46 }
  47
  48 MUTATOR_HOOKFUNCTION(dodging_GetPressedKeys) {
  49         float length;
  50         //print("dodging_hook\n");
  51
  52         if (g_dodging == 0)
  53                 return 0;
  54
  55         self.dodging_direction_x = 0;
  56         self.dodging_direction_y = 0;
  57         if (self.movement_x > 0) // get if movement keys are pressed
  58    {       // forward key pressed
  59         if (!(self.pressedkeys & KEY_FORWARD)) {        // is this a state change?
  60                         if (
  61                                 ((time - self.last_FORWARD_KEY_time) < self.cvar_cl_dodging_timeout) &&
  62                                 (self.lastflags & FL_ONGROUND) &&
  63                                 ((time - self.last_dodging_time) > cvar("sv_dodging_delay"))
  64                         ) { // are we allowed to dodge?
  65                                 self.dodging_action = 1;
  66                                 self.dodging_direction_x = 1;
  67                                 self.last_dodging_time = time;
  68                         }
  69                         self.last_FORWARD_KEY_time = time;
  70                 }
  71         }
  72
  73         if (self.movement_x < 0) // get if movement keys are pressed
  74    {       // forward key pressed
  75         if (!(self.pressedkeys & KEY_BACKWARD)) {        // is this a state change?
  76                         if (
  77                                 ((time - self.last_BACKWARD_KEY_time) < self.cvar_cl_dodging_timeout) &&
  78                                 (self.lastflags & FL_ONGROUND) &&
  79                                 ((time - self.last_dodging_time) > cvar("sv_dodging_delay"))
  80                         ) { // are we allowed to dodge?
  81                                 self.dodging_action = 1;
  82                                 self.dodging_direction_x = -1;
  83                                 self.last_dodging_time = time;
  84                         }
  85                         self.last_BACKWARD_KEY_time = time;
  86                 }
  87         }
  88
  89         // normalize the dodging_direction vector..
  90         length += self.dodging_direction_x * self.dodging_direction_x;
  91         length += self.dodging_direction_y * self.dodging_direction_y;
  92         length = sqrt(length);
  93
  94         self.dodging_direction_x *= 1/length;
  95         self.dodging_direction_y *= 1/length;
  96
  97         return 0;
  98 }
  99
 100 MUTATOR_DEFINITION(dodging)
 101 {
 102         // we need to be called before GetPressedKey does its thing so we can
 103         // detect state changes and therefore dodging actions..
 104         MUTATOR_HOOK(GetPressedKeys, dodging_GetPressedKeys, CBC_ORDER_ANY);
 105
 106         // in the physics hook we actually implement the dodge..
 107         MUTATOR_HOOK(PlayerPhysics, dodging_PlayerPhysics, CBC_ORDER_ANY);
 108
 109         // this just turns on the cvar. TODO: implement :D
 110         MUTATOR_ONADD
 111         {
 112                 g_dodging = 1;
 113                 dodging_Initialize();
 114         }
 115
 116         // this just turns off the cvar. TODO: implement :D
 117         MUTATOR_ONREMOVE
 118         {
 119                 g_dodging = 0;
 120         }
 121
 122         return 0;
 123 }