CreateObject: Difference between revisions
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{{Server client function}} | {{Server client function}} | ||
Creates an [[object]] [[element]] at a given position and rotation. | Creates an [[object]] [[element]] at a given position and rotation. | ||
{{ObjectInfo}} | |||
{{Note|Dynamic objects do not automatically have physics applied to them. Use [[setElementVelocity]](object, 0, 0, 0) to fix this.}} | {{Note|Dynamic objects do not automatically have physics applied to them. Use [[setElementVelocity]](object, 0, 0, 0) to fix this.}} | ||
==Syntax== | ==Syntax== |
Revision as of 11:36, 14 October 2024
Creates an object element at a given position and rotation.
Important info about Objects
- Objects only represent models created by a script, they do not represent objects that are part of GTA's default landscape (these belong to the "building pool").
- There is a distinction in GTA: San Andreas between static and dynamic models. The alternative createBuilding function allows you to create objects that are non-dynamic.
- The createObject function can also create non-dynamic objects, but for optimization reasons it is recommended to spawn Buildings when creating static objects that don't rely on the Dimension system (buildings don't use the same MTA object-streaming system).
Syntax
object createObject ( int modelId, float x, float y, float z, [ float rx, float ry, float rz, bool isLowLOD = false ] )
OOP Syntax Help! I don't understand this!
- Method: Object(...)
Required Arguments
- modelId: A whole integer specifying the GTA:SA object model ID. See Object IDs for a list of model IDs.
- x: A floating point number representing the X coordinate on the map.
- y: A floating point number representing the Y coordinate on the map.
- z: A floating point number representing the Z coordinate on the map.
Optional Arguments
NOTE: When using optional arguments, you might need to supply all arguments before the one you wish to use. For more information on optional arguments, see optional arguments.
- rx: A floating point number representing the rotation about the X axis in degrees.
- ry: A floating point number representing the rotation about the Y axis in degrees.
- rz: A floating point number representing the rotation about the Z axis in degrees.
- isLowLOD: A bool value specifying if the object will be low LOD. A low LOD object has no collision and a longer draw distance. See setLowLODElement for linking a LOD object.
Returns
- Returns the object element if the creation was successful, false otherwise.
Example
Click to collapse [-]
How to automatically perform object/building creationThis example shows you how to automatically create an object or building element according to certain parameters.
This script onlys works CLIENTSIDE due to createBuilding and engineGetModelPhysicalPropertiesGroup.
-- Creates an 'object' or 'building' element based on certain parameters or one of the functions fails -- This function will throw an error when unexpected arguments are used -- TODO: Add LOD support function createObjectOrBuilding(modelID, x, y, z, rx, ry, rz, interior, dimension) -- Validate the arguments passed assert(type(modelID)=="number", "invalid modelID passed: " .. tostring(modelID)) assert(type(x)=="number" and type(y)== "number" and type(z)=="number", "invalid position passed: " .. tostring(x) .. ", " .. tostring(y) .. ", " .. tostring(z)) if not rx then rx = 0 end if not ry then ry = 0 end if not rz then rz = 0 end assert(type(rx)=="number" and type(ry)== "number" and type(rz)=="number", "invalid rotation passed: " .. tostring(rx) .. ", " .. tostring(ry) .. ", " .. tostring(rz)) if not interior then interior = 0 end if not dimension then dimension = 0 end assert(type(interior)=="number" and interior >= 0 and interior <= 255, "invalid interior (must be 0-255) passed: " .. tostring(interior)) assert(type(dimension)=="number" and dimension >= -1 and dimension <= 65535, "invalid dimension passed (must be -1 65535): " .. tostring(dimension)) -- Dynamic object models will always have a physical properties group different than -1. local isNonDynamic = engineGetModelPhysicalPropertiesGroup(modelID) == -1 -- Buildings can't be affected by dimension local isNormalDimension = dimension == 0 -- Buildings can't be placed outside regular map boundaries local isInsideMapLimits = x >= -3000 and x <= 3000 and y >= -3000 and y <= 3000 local obj, bld if isNonDynamic and isNormalDimension and isInsideMapLimits then bld = createBuilding(modelID, x, y, z, rx, ry, rz, interior) assert(bld, ("Failed to create building with model ID %d at %f, %f, %f in interior %d"):format(modelID, x, y, z, interior)) else obj = createObject(modelID, x, y, z, rx, ry, rz, false) assert(obj, ("Failed to create object with model ID %d at %f, %f, %f"):format(modelID, x, y, z)) setElementInterior(obj, interior) setElementDimension(obj, dimension) end return obj or bld end -- Test this create object/building function addCommandHandler("testobject", function() -- This would be your object's model ID local modelID = 3556 -- This would be your object's position coordinates local x, y, z = 0, 0, 69 -- This would be your object's rotation coordinates local rx, ry, rz = 0, 0, 90 -- This would be your object's interior ID local interior = 0 -- This would be your object's dimension ID local dimension = 0 -- We use pcall to catch any errors that may be thrown local success, element = pcall(createObjectOrBuilding, modelID, x, y, z, rx, ry, rz, interior, dimension) if not success then outputDebugString(("Failed to create object or building: %s"):format(tostring(element)), 4, 255, 25, 25) return end -- OPTIONAL: Then you can apply additional properties, like so: if getElementType(element) == "object" then setObjectScale(element, 1.69) setObjectBreakable(element, false) end setElementAlpha(element, 255) setElementCollisionsEnabled(element, true) setElementFrozen(element, false) end)
Click to collapse [-]
Server-only Example 1This example creates an object when the resource starts:
function loadMapObjects() -- create an object at a specified position with a specified rotation createObject(1337, 5540.6654, 1020.55122, 1240.545, 90, 0, 0) end addEventHandler("onResourceStart", resourceRoot, loadMapObjects)
Click to collapse [-]
Server-only Example 2This example creates an object near the player who write /createObject in the chat:
-- this function is called whenever someone types 'createObject' in the console: function createObjectCommand(thePlayer, commandName) if (thePlayer) then local x, y, z = getElementPosition(thePlayer) -- create a object next to the player: local theObject = createObject(980, x + 2, y + 2, z, 0, 0, 0) if (theObject) then -- check if the object was created successfully outputChatBox("Object created successfully.", thePlayer) else outputChatBox("Failed to create the object.", thePlayer) end end end addCommandHandler("createobject", createObjectCommand)
See Also