SCR_CampaignBuildingLayoutComponent.c

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[EntityEditorProps(category: "GameScripted/Building", description: "Component attached to a composition layout, holding information about the final composition to be built")]
class SCR_CampaignBuildingLayoutComponentClass : ScriptComponentClass
{
}
 
class SCR_CampaignBuildingLayoutComponent : ScriptComponent
{
    [RplProp(onRplName: "SpawnPreviewIfBuildingModeOpened")]
    protected int m_iPrefabId = INVALID_PREFAB_ID;
 
    [RplProp()]
    protected int m_iToBuildValue;
 
    // The value is float, because GM can set a building progress in percentage and if the value would be an int, the rounding of value is causing a confusion.
    [RplProp()]
    protected float m_fCurrentBuildValue;
 
    protected SCR_BasePreviewEntity m_PreviewEntity;
 
    protected static const int EMPTY_BUILDING_VALUE = 0;
    protected static const int INVALID_PREFAB_ID = -1;
    protected ref ScriptInvokerInt m_OnAddBuildingValueInt;
    protected ref ScriptInvokerVoid m_OnAddBuildingValueVoid;
    protected ref ScriptInvokerVoid m_OnCompositionIdSet;
 
    //------------------------------------------------------------------------------------------------
    override void OnPostInit(IEntity owner)
    {
        GetOnAddBuildingValueInt().Insert(EvaluateBuildingStatus);
        GetOnCompositionIdSet().Insert(SpawnPreviewIfBuildingModeOpened);
 
        if (!SetOnEditorOpenEvent())
        {
            SCR_EditorManagerCore core = SCR_EditorManagerCore.Cast(SCR_EditorManagerCore.GetInstance(SCR_EditorManagerCore));
            if (core)
                core.Event_OnEditorManagerInitOwner.Insert(SetOnEditorOpenEvent);
        }
 
        GetOnAddBuildingValueVoid().Insert(LockCompositionInteraction);
    }
 
    //------------------------------------------------------------------------------------------------
    bool SetOnEditorOpenEvent()
    {
        SCR_EditorManagerEntity editorManagerEntity = SCR_EditorManagerEntity.GetInstance();
        if (editorManagerEntity)
            editorManagerEntity.GetOnModeChange().Insert(OnEditorModeChanged);
 
        SCR_EditorManagerCore core = SCR_EditorManagerCore.Cast(SCR_EditorManagerCore.GetInstance(SCR_EditorManagerCore));
        if (core)
            core.Event_OnEditorManagerInitOwner.Remove(SetOnEditorOpenEvent);
 
        return editorManagerEntity != null;
    }
 
    //------------------------------------------------------------------------------------------------
    ScriptInvokerInt GetOnAddBuildingValueInt()
    {
        if (!m_OnAddBuildingValueInt)
            m_OnAddBuildingValueInt = new ScriptInvokerInt();
 
        return m_OnAddBuildingValueInt;
    }
 
    //------------------------------------------------------------------------------------------------
    ScriptInvokerVoid GetOnAddBuildingValueVoid()
    {
        if (!m_OnAddBuildingValueVoid)
            m_OnAddBuildingValueVoid = new ScriptInvokerVoid();
 
        return m_OnAddBuildingValueVoid;
    }
 
    //------------------------------------------------------------------------------------------------
    ScriptInvokerVoid GetOnCompositionIdSet()
    {
        if (!m_OnCompositionIdSet)
            m_OnCompositionIdSet = new ScriptInvokerVoid();
 
        return m_OnCompositionIdSet;
    }
 
    //------------------------------------------------------------------------------------------------
    void OnEditorModeChanged(SCR_EditorModeEntity currentModeEntity, SCR_EditorModeEntity prevModeEntity)
    {
        if (currentModeEntity && currentModeEntity.GetModeType() == EEditorMode.BUILDING && IsLayoutInBuildingRange(currentModeEntity))
            SpawnPreview();
        else
            DeletePreview();
    }   
 
    //------------------------------------------------------------------------------------------------
    bool IsLayoutInBuildingRange(notnull SCR_EditorModeEntity editorModeEntity)
    {
        SCR_CampaignBuildingEditorComponent buildingEditorComponent = SCR_CampaignBuildingEditorComponent.Cast(editorModeEntity.FindComponent(SCR_CampaignBuildingEditorComponent));
        if (!buildingEditorComponent)
            return false;
        
        SCR_CampaignBuildingProviderComponent providerComponent = buildingEditorComponent.GetProviderComponent();
        if (!providerComponent)
            return false;
        
        return vector.DistanceSq(GetOwner().GetOrigin(), providerComponent.GetOwner().GetOrigin()) <= providerComponent.GetBuildingRadius() * providerComponent.GetBuildingRadius();
    }
 
    //------------------------------------------------------------------------------------------------
    bool HasBuildingPreview()
    {
        return m_PreviewEntity;
    }
 
    //------------------------------------------------------------------------------------------------
    void EvaluateBuildingStatus(int currentBuildValue)
    {
#ifdef ENABLE_DIAG
        if (DiagMenu.GetBool(SCR_DebugMenuID.DEBUGUI_CAMPAIGN_INSTANT_BUILDING))
        {
            // Calling the method one frame later, otherwise it can causing spawning the same composition twice.
            GetGame().GetCallqueue().CallLater(SpawnComposition, 0, false);
            return;
        }
#endif
        if (currentBuildValue > m_iToBuildValue * 0.5)
            CreateUnsafeAreaEvent();
        
        if (currentBuildValue < m_iToBuildValue)
            return;
 
        SpawnComposition();
        GetOnAddBuildingValueInt().Remove(EvaluateBuildingStatus);
    }
 
    //------------------------------------------------------------------------------------------------
    int GetBuildingValue(int prefabID)
    {
        ResourceName resName = GetCompositionResourceName(prefabID);
        if (resName.IsEmpty())
            return EMPTY_BUILDING_VALUE;
 
        SCR_CampaignBuildingManagerComponent buildingManagerComponent = GetBuildingManagerComponent();
        if (!buildingManagerComponent)
            return EMPTY_BUILDING_VALUE;
 
        SCR_CampaignBuildingCompositionOutlineManager outlineManager = buildingManagerComponent.GetOutlineManager();
        if (!outlineManager)
            return EMPTY_BUILDING_VALUE;
 
        return outlineManager.GetCompositionBuildingValue(resName);
    }
 
    //------------------------------------------------------------------------------------------------
    protected ResourceName GetCompositionResourceName(int prefabID)
    {
        SCR_CampaignBuildingManagerComponent buildingManagerComponent = GetBuildingManagerComponent();
        if (!buildingManagerComponent)
            return string.Empty;
 
        return buildingManagerComponent.GetCompositionResourceName(prefabID);
    }
 
    //------------------------------------------------------------------------------------------------
    protected SCR_CampaignBuildingManagerComponent GetBuildingManagerComponent()
    {
        BaseGameMode gameMode = GetGame().GetGameMode();
        if (!gameMode)
            return null;
 
        return SCR_CampaignBuildingManagerComponent.Cast(gameMode.FindComponent(SCR_CampaignBuildingManagerComponent));
    }
 
    //------------------------------------------------------------------------------------------------
    void SetPrefabId(int prefabId)
    {
        m_iPrefabId = prefabId;
        m_iToBuildValue = GetBuildingValue(prefabId);
 
        if (m_OnCompositionIdSet)
            m_OnCompositionIdSet.Invoke(prefabId);
 
        EvaluateBuildingStatus(m_fCurrentBuildValue);
 
        Replication.BumpMe();
    }
 
    //------------------------------------------------------------------------------------------------
    int GetPrefabId()
    {
        return m_iPrefabId;
    }
 
    //------------------------------------------------------------------------------------------------
    void SpawnComposition()
    {
        IEntity ent = GetOwner().GetRootParent();
        if (!ent)
            return;
 
        SCR_EditorLinkComponent linkComponent = SCR_EditorLinkComponent.Cast(ent.FindComponent(SCR_EditorLinkComponent));
        if (!linkComponent)
            return;
 
        linkComponent.SpawnComposition();
 
        // Call this as the composition can be spawned directly if the building value is set to zero. Yet we want to lock the composition to disable the interaction.
        LockCompositionInteraction();
 
        EntitySpawnParams spawnParams = new EntitySpawnParams;
        ent.GetWorldTransform(spawnParams.Transform);
 
        SCR_EditableEntityComponent entity = SCR_EditableEntityComponent.GetEditableEntity(ent);
        if (entity)
        {
            SCR_EditorPreviewParams params = SCR_EditorPreviewParams.CreateParams(spawnParams.Transform, verticalMode: EEditorTransformVertical.TERRAIN);
            SCR_RefPreviewEntity.SpawnAndApplyReference(entity, params);
        }
 
        SCR_EntityHelper.DeleteEntityAndChildren(GetOwner());
    }
 
    //------------------------------------------------------------------------------------------------
    void SpawnPreview()
    {
        if (m_PreviewEntity)
            return;
 
        IEntity ent = GetOwner().GetRootParent();
        if (!ent)
            return;
 
        ResourceName resName = GetCompositionResourceName(m_iPrefabId);
        if (resName.IsEmpty())
            return;
 
        Resource res = Resource.Load(resName);
        if (!res.IsValid())
            return;
 
        BaseGameMode gameMode = GetGame().GetGameMode();
        if (!gameMode)
            return;
 
        SCR_CampaignBuildingManagerComponent buildingManagerComponent = SCR_CampaignBuildingManagerComponent.Cast(gameMode.FindComponent(SCR_CampaignBuildingManagerComponent));
        if (!buildingManagerComponent)
            return;
 
        EntitySpawnParams spawnParams = new EntitySpawnParams();
        spawnParams.TransformMode = ETransformMode.WORLD;
        ent.GetWorldTransform(spawnParams.Transform);
 
        m_PreviewEntity = SCR_PrefabPreviewEntity.SpawnPreviewFromPrefab(res, "SCR_PrefabPreviewEntity", ent.GetWorld(), spawnParams, "{58F07022C12D0CF5}Assets/Editor/PlacingPreview/Preview.emat");
        m_PreviewEntity.SetPreviewTransform(spawnParams.Transform, EEditorTransformVertical.TERRAIN);
        if (!m_PreviewEntity)
            return;
 
        ent.AddChild(m_PreviewEntity, -1, EAddChildFlags.RECALC_LOCAL_TRANSFORM);
 
        m_PreviewEntity.Update();
 
        IEntity playerEntity = SCR_PlayerController.GetLocalMainEntity();
        if (!playerEntity)
            return;
        
        SCR_CharacterControllerComponent characterController = SCR_CharacterControllerComponent.Cast(playerEntity.FindComponent(SCR_CharacterControllerComponent));
        if (!characterController)
            return;
        
        characterController.GetOnPlayerDeath().Insert(DeletePreview);
    }
 
    //------------------------------------------------------------------------------------------------
    void SpawnPreviewIfBuildingModeOpened()
    {
        SCR_EditorModeEntity modeEntity = GetBuildingModeEntity();
        if (!modeEntity)
            return;
 
        if (modeEntity.IsOpened())
            SpawnPreview();
    }
 
    //------------------------------------------------------------------------------------------------
    void DeletePreview()
    {
        if (!m_PreviewEntity)
            return;
        
        IEntity playerEntity = SCR_PlayerController.GetLocalMainEntity();
        if (!playerEntity)
            return;
        
        SCR_CharacterControllerComponent characterController = SCR_CharacterControllerComponent.Cast(playerEntity.FindComponent(SCR_CharacterControllerComponent));
        if (!characterController)
            return;
        
        characterController.GetOnPlayerDeath().Remove(DeletePreview);
        
        // if there was open an editor, remove the invoker
        SCR_EditorModeEntity modeEntity = GetBuildingModeEntity();
        if (modeEntity)
            modeEntity.GetOnClosed().Remove(DeletePreview);
 
        IEntity ent = m_PreviewEntity.GetRootParent();
        if (!ent)
            ent = GetOwner().GetRootParent();
        
        if (ent)
            ent.RemoveChild(m_PreviewEntity);
        
        m_PreviewEntity.Update();
        SCR_EntityHelper.DeleteEntityAndChildren(m_PreviewEntity);
    }
 
    //------------------------------------------------------------------------------------------------
    void AddBuildingValue(int value)
    {
        m_fCurrentBuildValue += value;
        m_fCurrentBuildValue = Math.Clamp(m_fCurrentBuildValue, 0, m_iToBuildValue);
 
        if (m_OnAddBuildingValueInt)
            m_OnAddBuildingValueInt.Invoke(m_fCurrentBuildValue);
 
        if (m_OnAddBuildingValueVoid)
            m_OnAddBuildingValueVoid.Invoke();
 
        Replication.BumpMe();
    }
 
    //------------------------------------------------------------------------------------------------
    void SetBuildingValue(float newValue)
    {
        newValue = Math.Clamp(newValue, 0, m_iToBuildValue);
        m_fCurrentBuildValue = newValue;
 
        if (m_OnAddBuildingValueInt)
            m_OnAddBuildingValueInt.Invoke(m_fCurrentBuildValue);
 
        if (m_OnAddBuildingValueVoid)
            m_OnAddBuildingValueVoid.Invoke();
 
        Replication.BumpMe();
    }
 
    //------------------------------------------------------------------------------------------------
    int GetToBuildValue()
    {
        return m_iToBuildValue;
    }
 
    //------------------------------------------------------------------------------------------------
    float GetCurrentBuildValue()
    {
        return m_fCurrentBuildValue;
    }
 
    //------------------------------------------------------------------------------------------------
    SCR_EditorModeEntity GetBuildingModeEntity()
    {
        SCR_EditorManagerCore core = SCR_EditorManagerCore.Cast(SCR_EditorManagerCore.GetInstance(SCR_EditorManagerCore));
        if (!core)
            return null;
 
        SCR_EditorManagerEntity editorManager = core.GetEditorManager();
        if (!editorManager)
            return null;
 
        return editorManager.FindModeEntity(EEditorMode.BUILDING);
    }
 
    //------------------------------------------------------------------------------------------------
    void LockCompositionInteraction()
    {
        IEntity rootEnt = GetOwner().GetRootParent();
        if (!rootEnt)
            return;
 
        SCR_CampaignBuildingCompositionComponent compositionComponent = SCR_CampaignBuildingCompositionComponent.Cast(rootEnt.FindComponent(SCR_CampaignBuildingCompositionComponent));
        if (!compositionComponent)
            return;
 
        compositionComponent.SetInteractionLockServer(true);
        GetOnAddBuildingValueVoid().Remove(LockCompositionInteraction);
    }
 
    //------------------------------------------------------------------------------------------------
    protected void SnapEntityToTerrain(IEntity entity)
    {
        if (!entity)
            return;
        
        vector transform[4];
        Math3D.MatrixIdentity4(transform);
        
        transform[3] = entity.GetOrigin();
        
        BaseWorld world = GetGame().GetWorld();
        if (!world)
            return;
        
        transform[3][1] = world.GetSurfaceY(transform[3][0], transform[3][2]);
        entity.SetTransform(transform);
    }
 
    //------------------------------------------------------------------------------------------------
    override void OnChildAdded(IEntity parent, IEntity child)
    {
        super.OnChildAdded(parent, child);
        
        // child local transform is applied one frame later on server so snapping to terrain needs to be delayed by one frame
        RplComponent rplComp = RplComponent.Cast(GetOwner().FindComponent(RplComponent));
        if (!rplComp || rplComp.IsProxy())
            SnapEntityToTerrain(child);
        else
            GetGame().GetCallqueue().CallLater(SnapEntityToTerrain, 0, false, child);
    }
    
    //------------------------------------------------------------------------------------------------
    protected void CreateUnsafeAreaEvent()
    {
        vector boundMin, boundMax;
        GetOwner().GetWorldBounds(boundMin, boundMax);
        float previewSize = vector.DistanceXZ(boundMin, boundMax) * 1.25;
        
        SCR_AIDangerEvent_UnsafeArea unsafeAreaEvent = new SCR_AIDangerEvent_UnsafeArea();
        unsafeAreaEvent.SetDangerType(EAIDangerEventType.Danger_UnsafeArea);
        unsafeAreaEvent.SetPosition(GetOwner().GetOrigin());
        unsafeAreaEvent.SetRadius(previewSize);
        GetGame().GetAIWorld().RequestBroadcastDangerEvent(unsafeAreaEvent);    
    }
 
    //------------------------------------------------------------------------------------------------
    // destructor
    void ~SCR_CampaignBuildingLayoutComponent()
    {
        // Delete preview when the layout is removed (composition build, layout deleted from editor mode, etc.);
        DeletePreview();
    }
}