FireSniperRifle: Difference between revisions

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{{Welcome|
{{Welcome|
desc=This will send a packet to server which is filled by the following parameters.|
desc=This will send a packet to server which is filled by the following parameters.|
params=<syntaxhighlight lang="lua">( sniperid, aimposx, aimposy, aimposz, alpha, angle )</syntaxhighlight>
params=<syntaxhighlight lang="lua">( sniperid, aimposx, aimposy, aimposz, dx, dy, dz)</syntaxhighlight>
<poem>::sniperid : The weapon ID of sniper (28 or 29) to fire.
<poem>::sniperid : The weapon ID of sniper (28 or 29) to fire.
::aimposx : The x co-ordinate of aim position of NPC ( can be determined using server using player.AimPos or can be calculated artificially).
::aimposx : The x co-ordinate of aim position of NPC ( can be determined using server using player.AimPos or can be calculated artificially).
::aimposy : The y co-ordinate of aim pos
::aimposy : The y co-ordinate of aim pos
::aimposz : The z co-ordinate of aimpos
::aimposz : The z co-ordinate of aimpos
::alpha : The vertical angle in radians from aimpos to target. +ve value means target is above aimpos.
::dx, dy, dz = The normalized direction vector(from aimpos to target ) multiplied by 16.
::angle : Same as player.Angle on server side (it ranges from -PI to PI) of npc as if bot is facing towards the target from its aiming position.  
</poem>|
</poem>|
example=<source lang="lua">
example=<source lang="lua">
//The following function will make npc shoot [Vector]tPos with weapon 29.
//Sniper Rifle example taken from Attack Script
function SnipeAt(tPos)
function SnipeAt(tPos, isReloading=false, isHeadShot=false)
{
{
local Pos=GetMyPos();
if(isHeadShot)tPos.z+=0.627299;
local angle= atan2(-(tPos.x-Pos.x), tPos.y-Pos.y);
local Pos= GetMyPos();
local aimPos=Vector(tPos.x,tPos.y,tPos.z);
local aimPos = Vector( Pos.x, Pos.y, Pos.z-0.2);
SendOnFootSyncData( 577,Pos.x,Pos.y, Pos.z, angle, GetPlayerHealth( npcid ), GetPlayerArmour( npcid ), 29, 0.0, 0.0, 0.0, aimPos.x, aimPos.y, aimPos.z, PI, PI, Pos.x<tPos.x?PI/2:-PI/2, false );  
local angle= atan2(-(tPos.x-aimPos.x), tPos.y-aimPos.y);
FireSniperRifle(29, aimPos.x, aimPos.y, aimPos.z, PI, PI, Pos.x<tPos.x?PI/2:-PI/2 );  
local alpha = atan2( tPos.z - aimPos.z, sqrt( pow( tPos.y - aimPos.y, 2 ) + pow( tPos.x - aimPos.x , 2 ) ) );
 
local dx = cos(alpha) * sin(-angle);
local dy = cos(alpha) * cos(-angle);
local dz = sin(alpha);
local keys= 577 ;
local ammo = GetLocalValue(I_CURWEP_AMMO );
aimPos+=Vector( dx, dy, dz);
/*SendOnFootSyncData( keys, Pos.x,Pos.y, Pos.z, angle, GetPlayerHealth( npcid ), GetPlayerArmour( npcid ), GetPlayerArmedWeapon( npcid ),ammo, 0.0, 0.0, 0.0, aimPos.x, aimPos.y, aimPos.z, dx, dy, dz, false, isReloading ); */
SetTimerEx("FireSniperRifle", 60, 1, GetPlayerArmedWeapon(npcid), Pos.x, Pos.y, Pos.z, 16.0*dx, 16.0*dy, 16.0*dz );
}
}


function OnNPCConnect(myplayerid)
//Grab npc ID
{
function OnNPCConnect(myplayerid)  
npcid<-myplayerid;
{  
    npcid<-myplayerid;
}
}
</source>
</source>|
Since it is difficult to calculate the aiming position and aim direction by npc, it has been found that npc can shoot a target almost accurately (an exception when the player is in the almost north of npc 3.10~3.14 ) when the aiming position of npc is set exactly as the target position and aiming direction z co-ordinate set as -PI/2 if player is to the west ( of npc's position with N (north pole) taking into account. npc angle will be positive ) or PI/2 if player is to the east of npc ( the angle of bot will be negative ).|
note=This was added in v1.3 and will not work in previous builds.|
relfuncs=*[[SendOnFootSyncData]]|
}}
}}

Latest revision as of 18:53, 26 February 2023


Description:
This will send a packet to server which is filled by the following parameters.


Parameters: 

( sniperid, aimposx, aimposy, aimposz, dx, dy, dz)

sniperid : The weapon ID of sniper (28 or 29) to fire.
aimposx : The x co-ordinate of aim position of NPC ( can be determined using server using player.AimPos or can be calculated artificially).
aimposy : The y co-ordinate of aim pos
aimposz : The z co-ordinate of aimpos
dx, dy, dz = The normalized direction vector(from aimpos to target ) multiplied by 16.


Return Values:
This function does not return any specific values.


Example 

//Sniper Rifle example taken from Attack Script
function SnipeAt(tPos, isReloading=false, isHeadShot=false)
{
	if(isHeadShot)tPos.z+=0.627299;
	local Pos= GetMyPos();
	local aimPos = Vector( Pos.x, Pos.y, Pos.z-0.2);
	local angle= atan2(-(tPos.x-aimPos.x), tPos.y-aimPos.y);
	local alpha = atan2( tPos.z - aimPos.z, sqrt( pow( tPos.y - aimPos.y, 2 ) + pow( tPos.x - aimPos.x , 2 ) ) );
	local dx = cos(alpha) * sin(-angle);
	local dy = cos(alpha) * cos(-angle);
	local dz = sin(alpha);
	local keys= 577 ;
	local ammo = GetLocalValue(I_CURWEP_AMMO );
	aimPos+=Vector( dx, dy, dz);
	/*SendOnFootSyncData( keys, Pos.x,Pos.y, Pos.z, angle, GetPlayerHealth( npcid ), GetPlayerArmour( npcid ), GetPlayerArmedWeapon( npcid ),ammo, 0.0, 0.0, 0.0, aimPos.x, aimPos.y, aimPos.z, dx, dy, dz, false, isReloading ); */
	SetTimerEx("FireSniperRifle", 60, 1, GetPlayerArmedWeapon(npcid), Pos.x, Pos.y, Pos.z, 16.0*dx, 16.0*dy, 16.0*dz );
}

//Grab npc ID 
function OnNPCConnect(myplayerid) 
{ 
     npcid<-myplayerid;
}

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