#include <amxmodx>
#include <hamsandwich>
#include <fakemeta>
#include <zombieplague>

#define SOUND_HEARTBEAT		"fastrun_heartbeat.wav"

#define SPEED_USE_SKILL			350.0
#define SPEED_REST_SKILL		150.0

#define TIME_USE_SKILL			10.0
#define TIME_REST_SKILL			5.0

new Float:g_iTimeUseSkill[33];
new Float:g_iTimeUseRest[33];
new Float:g_iScreenFade[33];
new bool:g_iOnSkill[33];
new bool:g_iOffSkill[33];
new bool:g_iUsing[33];

new Ham:Ham_Player_ResetMaxSpeed = Ham_Item_PreFrame;

public plugin_init()
{
	register_plugin("FastRun (From CS: Online)", "0.1", "fl0wer")

	register_concmd("use_fustrun", "concmd_fastrun")

	RegisterHam(Ham_Spawn, "player", "Player_Spawn_Post", 1)
	RegisterHam(Ham_Killed, "player", "Player_Killed_Post", 1)
	RegisterHam(Ham_Player_PreThink, "player", "Player_PreThink_Pre")
}

public plugin_precache()
{
	precache_sound(SOUND_HEARTBEAT)
}

public concmd_fastrun(id)
{
	if(is_user_alive(id) && !zp_get_user_zombie(id) && !zp_get_user_nemesis(id))
	{
		if(g_iUsing[id])
		{
			g_iUsing[id] = false;
			g_iOnSkill[id] = true;
			g_iScreenFade[id] = get_gametime();
			g_iTimeUseSkill[id] = get_gametime();
			func(id)
		}
		return PLUGIN_HANDLED;
	}
	return PLUGIN_CONTINUE;
}

public Player_Spawn_Post(id)
{
	if(is_user_alive(id))
	{
		g_iUsing[id] = true;

		client_cmd(id, "bind 5 ^"slot5;use_fustrun^"")
	}
}

public Player_Killed_Post(victim, attacker, shouldgib)
{
	if(g_iOnSkill[victim] || g_iOffSkill[victim])
	{
		g_iOnSkill[victim] = false;
		g_iOffSkill[victim] = false;
		g_iTimeUseSkill[victim] = 0.0;
		g_iTimeUseRest[victim] = 0.0;
		g_iScreenFade[victim] = 0.0;
	}
}

public Player_PreThink_Pre(id)
{
	if(is_user_alive(id) && !zp_get_user_zombie(id) && !zp_get_user_nemesis(id))
	{
		if(g_iOnSkill[id])
		{
			set_pev(id, pev_maxspeed, SPEED_USE_SKILL)

			func(id)

			if(g_iTimeUseSkill[id] + TIME_USE_SKILL <= get_gametime())
			{
				g_iOnSkill[id] = false;
				g_iTimeUseSkill[id] = 0.0;
				g_iOffSkill[id] = true;
				g_iTimeUseRest[id] = get_gametime();
			}
		}
		if(g_iOffSkill[id])
		{
			set_pev(id, pev_maxspeed, SPEED_REST_SKILL)

			func(id)

			if(g_iTimeUseRest[id] + TIME_REST_SKILL <= get_gametime())
			{
				g_iOffSkill[id] = false;
				g_iTimeUseRest[id] = 0.0;
				g_iScreenFade[id] = 0.0;
				ExecuteHamB(Ham_Player_ResetMaxSpeed, id)
			}
		}
	}
}

func(id)
{
	if(g_iScreenFade[id] + 1.0 <= get_gametime())
	{
		message_begin(MSG_ONE_UNRELIABLE, get_user_msgid("ScreenFade"), _, id)
		write_short(1<<12)
		write_short(1<<10)
		write_short(0x0000)
		write_byte(255)
		write_byte(255)
		write_byte(255)
		write_byte(200)
		message_end()

		client_cmd(id, "spk /%s", SOUND_HEARTBEAT)

		g_iScreenFade[id] = get_gametime();
	}
}