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  1. #include <amxmodx>
  2. #include <engine>
  3.  
  4. #define PLUGIN	"Pump Knockback (when shot by one)"
  5. #define VERSION	"1.0"
  6. #define AUTHOR	"v3x & Chronic"
  7.  
  8. new cvar_pump_active , cvar_pump_force;
  9.  
  10. public plugin_init()
  11. {
  12. 	register_plugin(PLUGIN , VERSION , AUTHOR);
  13.  
  14. 	register_event("Damage" , "event_Damage" , "b" , "2>0");
  15.  
  16. 	cvar_pump_active   = register_cvar("pump_knockback" , "1");
  17. 	cvar_pump_force	   = register_cvar("pump_force"     , "10");
  18. }
  19.  
  20. public event_Damage(id)
  21. {
  22. 	if(!get_pcvar_num(cvar_pump_active))
  23. 		return PLUGIN_CONTINUE;
  24.  
  25. 	if(!is_user_alive(id))
  26. 		return PLUGIN_CONTINUE;
  27.  
  28. 	new weapon , attacker = get_user_attacker(id , weapon);
  29.  
  30. 	if(!is_user_alive(attacker))
  31. 		return PLUGIN_CONTINUE;
  32.  
  33. 	if(weapon == CSW_M3)
  34. 	{
  35. 		new Float:vec[3];
  36. 		new Float:oldvelo[3];
  37. 		get_user_velocity(id, oldvelo);
  38. 		create_velocity_vector(id , attacker , vec);
  39. 		vec[0] += oldvelo[0];
  40. 		vec[1] += oldvelo[1];
  41. 		set_user_velocity(id , vec);
  42. 	}
  43.  
  44. 	return PLUGIN_CONTINUE;
  45. }
  46.  
  47. // Stock by the one and only, Chronic :P
  48. stock create_velocity_vector(victim,attacker,Float:velocity[3])
  49. {
  50. 	if(!is_user_alive(victim) || !is_user_alive(attacker))
  51. 		return 0;
  52.  
  53. 	new Float:vicorigin[3];
  54. 	new Float:attorigin[3];
  55. 	entity_get_vector(victim   , EV_VEC_origin , vicorigin);
  56. 	entity_get_vector(attacker , EV_VEC_origin , attorigin);
  57.  
  58. 	new Float:origin2[3]
  59. 	origin2[0] = vicorigin[0] - attorigin[0];
  60. 	origin2[1] = vicorigin[1] - attorigin[1];
  61.  
  62. 	new Float:largestnum = 0.0;
  63.  
  64. 	if(floatabs(origin2[0])>largestnum) largestnum = floatabs(origin2[0]);
  65. 	if(floatabs(origin2[1])>largestnum) largestnum = floatabs(origin2[1]);
  66.  
  67. 	origin2[0] /= largestnum;
  68. 	origin2[1] /= largestnum;
  69.  
  70. 	velocity[0] = ( origin2[0] * (get_pcvar_float(cvar_pump_force) * 3000) ) / get_entity_distance(victim , attacker);
  71. 	velocity[1] = ( origin2[1] * (get_pcvar_float(cvar_pump_force) * 3000) ) / get_entity_distance(victim , attacker);
  72. 	if(velocity[0] <= 20.0 || velocity[1] <= 20.0)
  73. 		velocity[2] = random_float(200.0 , 275.0);
  74.  
  75. 	return 1;
  76. }