/*

By Seregamil

Car shot

*/
#include a_samp

native IsValidVehicle(vehicleid);

main(){}

new _update[MAX_PLAYERS];

public OnGameModeInit(){
	return 1;
}

public OnPlayerConnect(playerid){
    _clearAim(playerid);
	return 1;
}

public OnPlayerDisconnect(playerid, reason){
	_clearAim(playerid);
	return 1;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys){
	if(newkeys & KEY_FIRE){
	    if(newkeys & KEY_HANDBRAKE && damageGun(playerid))
			_update[playerid] = SetTimerEx("_vehicleShot", 794, true, "i", playerid);
		else
 			_clearAim(playerid);
	}
	else if(oldkeys & KEY_FIRE || oldkeys & KEY_HANDBRAKE)
	    _clearAim(playerid);
	return 1;
}

Float:setRadius(vehicleid){
	switch(vehicleType(vehicleid)){
	    case 1,2: return 1.5;
	    case 3,4,6: return 6.0;
	    case 5: return 5.0;
	    case 7,9: return 2.0;
	    case 8: return 0.5;
	    default: return 3.0;
	}
	return 3.0;
}

forward _vehicleShot(playerid);
public _vehicleShot(playerid){
	if(!damageGun(playerid)) return _clearAim(playerid);

	new Float: car_pos[3], Float: carHealth;
	GetVehiclePos(GetPVarInt(playerid,"AimVehicle"), car_pos[0],car_pos[1],car_pos[2]);
	if(IsPlayerAimingAt(playerid, car_pos[0],car_pos[1],car_pos[2], setRadius(GetPVarInt(playerid,"AimVehicle")))){
		GetVehicleHealth(GetPVarInt(playerid,"AimVehicle"), carHealth);
		if(carHealth > 100)
			SetVehicleHealth(GetPVarInt(playerid,"AimVehicle"), carHealth-(GetPlayerWeapon(playerid) * 4));

		randomDamage(GetPVarInt(playerid,"AimVehicle"));
		return true;
	}
	for(new vehicleid = 0; vehicleid!=MAX_VEHICLES;vehicleid++){
 		if(!IsValidVehicle(vehicleid)) continue;
 		if(!IsVehicleStreamedIn(vehicleid, playerid)) continue;
 		GetVehiclePos(vehicleid, car_pos[0],car_pos[1],car_pos[2]);
		if(!IsPlayerAimingAt(playerid, car_pos[0],car_pos[1],car_pos[2], setRadius(vehicleid))) continue;

		GetVehicleHealth(vehicleid, carHealth);

		if(carHealth > 100)
			SetVehicleHealth(vehicleid, carHealth-(GetPlayerWeapon(playerid) * 4));

		randomDamage(vehicleid);
		SetPVarInt(playerid, "AimVehicle", vehicleid);
		break;
	}
	return true;
}

_clearAim(playerid){
	SetPVarInt(playerid, "AimVehicle", MAX_VEHICLES+1);
	KillTimer(_update[playerid]);
	return true;
}

encode_lights(light1, light2, light3, light4) return light1 | (light2 << 1) | (light3 << 2) | (light4 << 3);
encode_panels(flp, frp, rlp, rrp, windshield, front_bumper, rear_bumper) return flp | (frp << 4) | (rlp << 8) | (rrp << 12) | (windshield << 16) | (front_bumper << 20) | (rear_bumper << 24);

encode_doors(bonnet, boot, driver_door, passenger_door, behind_driver_door, behind_passenger_door){
    #pragma unused behind_driver_door
    #pragma unused behind_passenger_door
    return bonnet | (boot << 8) | (driver_door << 16) | (passenger_door << 24);
}

randomDamage(vehicleid){
	new panels, doors, lights, tires;
 	GetVehicleDamageStatus(vehicleid, panels, doors, lights, tires);
 	switch(random(3)){
  		case 0: panels = encode_panels(1, 1, 1, 1, 3, 3, 3);
  		case 1: doors = encode_doors(4, 4, 4, 4, 0, 0);
  		case 2: lights = encode_lights(1, 1, 1, 1);
	}
  	UpdateVehicleDamageStatus(vehicleid, panels, doors, lights, tires);
    return 1;
}

damageGun(playerid){
	switch(GetPlayerWeapon(playerid)){
	    case 22..38: return true;
	}
	return false;
}

vehicleType(vehicleid){//by wh0am1
    switch (GetVehicleModel(vehicleid)){
        case 509,481,510: return 1;//velo
        case 461..463,448,581,521..523,586,468,471: return 2;//moto
        case 417,425,447,469,487,488,497,548,563: return 3;//heli
        case 460,476,511..513,519,520,553,577,592,593: return 4;//air
        case 435,450,569,570,584,590,591,606..608,610,611: return 5;//trailer
        case 472,473,493,595,484,430,453,452,446,454: return 6;//boat
        case 499,498,609,524,578,455,403,414,443,514,515,408,456,433: return 7;//autoB
        case 441,464,465,501,564,594: return 8;//RC
        default: return 9;//autoA
    }
    return false;
}

Float:DistanceCameraTargetToLocation(Float:CamX, Float:CamY, Float:CamZ,  Float:ObjX, Float:ObjY, Float:ObjZ,  Float:FrX, Float:FrY, Float:FrZ){
	new Float:TGTDistance;
	TGTDistance = floatsqroot((CamX - ObjX) * (CamX - ObjX) + (CamY - ObjY) * (CamY - ObjY) + (CamZ - ObjZ) * (CamZ - ObjZ));
	new Float:tmpX, Float:tmpY, Float:tmpZ;
	tmpX = FrX * TGTDistance + CamX;
	tmpY = FrY * TGTDistance + CamY;
	tmpZ = FrZ * TGTDistance + CamZ;
	return floatsqroot((tmpX - ObjX) * (tmpX - ObjX) + (tmpY - ObjY) * (tmpY - ObjY) + (tmpZ - ObjZ) * (tmpZ - ObjZ));
}

IsPlayerAimingAt(playerid, Float:x, Float:y, Float:z, Float:radius){
	new Float:cx,Float:cy,Float:cz,Float:fx,Float:fy,Float:fz;
	GetPlayerCameraPos(playerid, cx, cy, cz);
	GetPlayerCameraFrontVector(playerid, fx, fy, fz);
	return (radius >= DistanceCameraTargetToLocation(cx, cy, cz, x, y, z, fx, fy, fz));
}