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         makevectors(self.angles);
  32         // print("physics hook\n");
  33         if (g_dodging == 0)
  34                 return 0;
  35
  36         // ramp up dodging speed by adding some velocity each frame.. TODO: do it! :D
  37         if (self.dodging_action == 1) {
  38                 self.velocity =
  39                           self.velocity
  40                         + ((self.dodging_direction_y * cvar("sv_dodging_horiz_speed")) * v_right)
  41                         + ((self.dodging_direction_x * cvar("sv_dodging_horiz_speed")) * v_forward)
  42                         + (cvar("sv_dodging_up_speed") * v_up);
  43
  44                 // reset state so next dodge can be done correctly
  45                 self.dodging_action = 0;
  46                 self.dodging_direction_x = 0;
  47                 self.dodging_direction_y = 0;
  48         }
  49
  50         // are we done with the dodging ramp yet?
  51         if((self.dodging_action == 1) && ((time - self.last_dodging_time) > cvar("sv_dodging_ramp_time")))
  52                 self.dodging_action = 0;
  53
  54         return 0;
  55 }
  56
  57 MUTATOR_HOOKFUNCTION(dodging_GetPressedKeys) {
  58         float length;
  59         float dodge_detected;
  60         //print("dodging_hook\n");
  61
  62         if (g_dodging == 0)
  63                 return 0;
  64
  65         dodge_detected = 0;
  66
  67         // common checks
  68         if ((time - self.last_dodging_time) < cvar("sv_dodging_delay"))
  69                 return 0;
  70
  71         if (!(self.lastflags & FL_ONGROUND))
  72                 return 0;
  73
  74
  75         if (self.movement_x > 0) {
  76                 // is this a state change?
  77                 if (!(self.pressedkeys & KEY_FORWARD)) {
  78                         if ((time - self.last_FORWARD_KEY_time) < self.cvar_cl_dodging_timeout) {
  79                                 dodge_detected = 1;
  80                                 self.dodging_action = 1;
  81                                 self.dodging_direction_x = 1.0;
  82                                 self.last_dodging_time = time;
  83                         }
  84                         self.last_FORWARD_KEY_time = time;
  85                 }
  86         }
  87
  88         if (self.movement_x < 0) {
  89                 // is this a state change?
  90                 if (!(self.pressedkeys & KEY_BACKWARD)) {
  91                         if ((time - self.last_BACKWARD_KEY_time) < self.cvar_cl_dodging_timeout)        {
  92                                 dodge_detected = 1;
  93                                 self.dodging_action = 1;
  94                                 self.dodging_direction_x = -1.0;
  95                                 self.last_dodging_time = time;
  96                         }
  97                         self.last_BACKWARD_KEY_time = time;
  98                 }
  99         }
 100
 101         if (self.movement_y > 0) {
 102                 // is this a state change?
 103                 if (!(self.pressedkeys & KEY_RIGHT)) {
 104                         if ((time - self.last_RIGHT_KEY_time) < self.cvar_cl_dodging_timeout)   {
 105                                 dodge_detected = 1;
 106                                 self.dodging_action = 1;
 107                                 self.dodging_direction_y = 1.0;
 108                                 self.last_dodging_time = time;
 109                         }
 110                         self.last_RIGHT_KEY_time = time;
 111                 }
 112         }
 113
 114         if (self.movement_y < 0) {
 115                 // is this a state change?
 116                 if (!(self.pressedkeys & KEY_LEFT)) {
 117                         if ((time - self.last_LEFT_KEY_time) < self.cvar_cl_dodging_timeout)    {
 118                                 dodge_detected = 1;
 119                                 self.dodging_action = 1;
 120                                 self.dodging_direction_y = -1.0;
 121                                 self.last_dodging_time = time;
 122                         }
 123                         self.last_LEFT_KEY_time = time;
 124                 }
 125         }
 126
 127
 128
 129         if (dodge_detected == 1) {
 130                 // normalize the dodging_direction vector..
 131                 length = length + self.dodging_direction_x * self.dodging_direction_x;
 132                 length = length + self.dodging_direction_y * self.dodging_direction_y;
 133                 length = sqrt(length);
 134
 135                 self.dodging_direction_x = self.dodging_direction_x * 1.0/length;
 136                 self.dodging_direction_y = self.dodging_direction_y * 1.0/length;
 137         }
 138
 139         return 0;
 140 }
 141
 142 MUTATOR_DEFINITION(dodging)
 143 {
 144         // we need to be called before GetPressedKey does its thing so we can
 145         // detect state changes and therefore dodging actions..
 146         MUTATOR_HOOK(GetPressedKeys, dodging_GetPressedKeys, CBC_ORDER_ANY);
 147
 148         // in the physics hook we actually implement the dodge..
 149         MUTATOR_HOOK(PlayerPhysics, dodging_PlayerPhysics, CBC_ORDER_ANY);
 150
 151         // this just turns on the cvar.
 152         MUTATOR_ONADD
 153         {
 154                 g_dodging = 1;
 155                 dodging_Initialize();
 156         }
 157
 158         // this just turns off the cvar.
 159         MUTATOR_ONREMOVE
 160         {
 161                 g_dodging = 0;
 162         }
 163
 164         return 0;
 165 }