public void FromGridTilesSprites()
{
Tilemaps.Tilemap tilemap = GetComponent <Tilemaps.Tilemap>();
foreach (var position in tilemap.cellBounds.allPositionsWithin)
{
Sprite sprite = tilemap.GetSprite(position);
if (sprite == null)
{
continue;
}
int PhysicsShape = sprite.GetPhysicsShapeCount();
if (PhysicsShape > 0)
{
GameObject scHost = new GameObject();
scHost.name = "ShadowCaster2D";//TODO give them a better name
scHost.transform.parent = transform;
List <Vector2> shapeVertices = new List <Vector2>(PhysicsShape);
sprite.GetPhysicsShape(0, shapeVertices);
ShadowCaster2D sc = scHost.AddComponent <ShadowCaster2D>();
sc.shapePath = Array.ConvertAll <Vector2, Vector3>(shapeVertices.ToArray(), vec2To3);
RegisterShadowCaster2D(sc);
sc.transform.position = tilemap.GetCellCenterWorld(new Vector3Int(position.x, position.y, 0));
sc.useRendererSilhouette = false;
sc.selfShadows = true;
sc.enabled = false;
sc.mesh = null;
sc.enabled = true;
}
}
}
public static void RemoveFromShadowCasterGroup(ShadowCaster2D shadowCaster, ShadowCasterGroup2D shadowCasterGroup)
{
if (shadowCasterGroup != null)
{
shadowCasterGroup.UnregisterShadowCaster2D(shadowCaster);
}
}
public void UnregisterShadowCaster2D(ShadowCaster2D shadowCaster2D)
{
if (m_ShadowCasters != null)
{
m_ShadowCasters.Remove(shadowCaster2D);
}
}
public static void SetShadowProjectionGlobals(CommandBuffer cmdBuffer, ShadowCaster2D shadowCaster)
{
Vector3 shadowCasterScale = shadowCaster.transform.lossyScale;
Matrix4x4 shadowMatrix = Matrix4x4.TRS(shadowCaster.transform.position, shadowCaster.transform.rotation, Vector3.one);
cmdBuffer.SetGlobalVector(k_ShadowModelScaleID, new Vector3(shadowCasterScale.x, shadowCasterScale.y, shadowCasterScale.z));
cmdBuffer.SetGlobalMatrix(k_ShadowModelMatrixID, shadowMatrix);
cmdBuffer.SetGlobalMatrix(k_ShadowModelInvMatrixID, shadowMatrix.inverse);
}
public void RegisterShadowCaster2D(ShadowCaster2D shadowCaster2D)
{
if (m_ShadowCasters == null)
{
m_ShadowCasters = new List <ShadowCaster2D>();
}
m_ShadowCasters.Add(shadowCaster2D);
}
public static bool AddToShadowCasterGroup(ShadowCaster2D shadowCaster, ref ShadowCasterGroup2D shadowCasterGroup)
{
ShadowCasterGroup2D newShadowCasterGroup = FindTopMostCompositeShadowCaster(shadowCaster) as ShadowCasterGroup2D;
if (newShadowCasterGroup == null)
{
newShadowCasterGroup = shadowCaster;
}
if (newShadowCasterGroup != null && shadowCasterGroup != newShadowCasterGroup)
{
newShadowCasterGroup.RegisterShadowCaster2D(shadowCaster);
shadowCasterGroup = newShadowCasterGroup;
return(true);
}
return(false);
}
public void Start()
{
tilemapCollider = GetComponent <CompositeCollider2D>();
GameObject shadowCasterContainer = GameObject.Find("shadow_casters");
for (int i = 0; i < tilemapCollider.pathCount; i++)
{
Vector2[] pathVertices = new Vector2[tilemapCollider.GetPathPointCount(i)];
tilemapCollider.GetPath(i, pathVertices);
GameObject shadowCaster = new GameObject("shadow_caster_" + i);
PolygonCollider2D shadowPolygon = (PolygonCollider2D)shadowCaster.AddComponent(typeof(PolygonCollider2D));
shadowCaster.transform.parent = shadowCasterContainer.transform;
shadowPolygon.points = pathVertices;
shadowPolygon.enabled = false;
UnityEngine.Experimental.Rendering.Universal.ShadowCaster2D shadowCasterComponent = shadowCaster.AddComponent <UnityEngine.Experimental.Rendering.Universal.ShadowCaster2D>();
shadowCasterComponent.selfShadows = true;
}
}
static CompositeShadowCaster2D FindTopMostCompositeShadowCaster(ShadowCaster2D shadowCaster)
{
CompositeShadowCaster2D retGroup = null;
Transform transformToCheck = shadowCaster.transform.parent;
while (transformToCheck != null)
{
CompositeShadowCaster2D currentGroup;
if (transformToCheck.TryGetComponent <CompositeShadowCaster2D>(out currentGroup))
{
retGroup = currentGroup;
}
transformToCheck = transformToCheck.parent;
}
return(retGroup);
}
static CompositeShadowCaster2D FindTopMostCompositeShadowCaster(ShadowCaster2D shadowCaster)
{
CompositeShadowCaster2D retGroup = null;
Transform transformToCheck = shadowCaster.transform.parent;
while (transformToCheck != null)
{
CompositeShadowCaster2D.CompositeShadowCaster2DsByTransform.TryGetValue(transformToCheck,
out CompositeShadowCaster2D currentGroup);
if (currentGroup != null)
{
retGroup = currentGroup;
}
transformToCheck = transformToCheck.parent;
}
return(retGroup);
}
public void FromCompositeCollider2D()
{
Tilemaps.TilemapCollider2D tileMapcollider = GetComponent <Tilemaps.TilemapCollider2D>();
bool tilemapCompositeUsage = tileMapcollider.usedByComposite;
tileMapcollider.usedByComposite = true;
CompositeCollider2D compositeCollider = gameObject.AddComponent <CompositeCollider2D>();
if (compositeCollider.pathCount != 0)
{
for (int pathIndex = 0; pathIndex < compositeCollider.pathCount; pathIndex++)
{
Vector2[] pathVertices = new Vector2[compositeCollider.GetPathPointCount(pathIndex)];
compositeCollider.GetPath(pathIndex, pathVertices);
GameObject scHost = new GameObject();
scHost.name = "ShadowCaster2D";
scHost.transform.parent = transform;
ShadowCaster2D sc = scHost.AddComponent <ShadowCaster2D>();
sc.shapePath = Array.ConvertAll <Vector2, Vector3>(pathVertices, vec2To3);
sc.useRendererSilhouette = false;
sc.selfShadows = true;
RegisterShadowCaster2D(sc);
sc.enabled = false;
sc.mesh = null;
sc.enabled = true;
}
}
else
{
Debug.Log("Composite collider had no path");
}
DestroyImmediate(compositeCollider);
DestroyImmediate(GetComponent <Rigidbody2D>());
tileMapcollider.usedByComposite = tilemapCompositeUsage;
}
static private void RenderShadows(CommandBuffer cmdBuffer, int layerToRender, Light2D light, float shadowIntensity, RenderTargetIdentifier renderTexture, RenderTargetIdentifier depthTexture)
{
cmdBuffer.SetGlobalFloat("_ShadowIntensity", 1 - light.shadowIntensity);
cmdBuffer.SetGlobalFloat("_ShadowVolumeIntensity", 1 - light.shadowVolumeIntensity);
if (shadowIntensity > 0)
{
CreateShadowRenderTexture(cmdBuffer, light.blendStyleIndex);
cmdBuffer.SetRenderTarget(s_ShadowsRenderTarget.Identifier()); // This isn't efficient if this light doesn't cast shadow.
cmdBuffer.ClearRenderTarget(true, true, Color.black);
BoundingSphere lightBounds = light.GetBoundingSphere(); // Gets the local bounding sphere...
float shadowRadius = 1.42f * lightBounds.radius;
cmdBuffer.SetGlobalVector("_LightPos", light.transform.position);
cmdBuffer.SetGlobalFloat("_ShadowRadius", shadowRadius);
Material shadowMaterial = GetShadowMaterial(1);
Material removeSelfShadowMaterial = GetRemoveSelfShadowMaterial(1);
List <ShadowCasterGroup2D> shadowCasterGroups = ShadowCasterGroup2DManager.shadowCasterGroups;
if (shadowCasterGroups != null && shadowCasterGroups.Count > 0)
{
int previousShadowGroupIndex = -1;
int incrementingGroupIndex = 0;
for (int group = 0; group < shadowCasterGroups.Count; group++)
{
ShadowCasterGroup2D shadowCasterGroup = shadowCasterGroups[group];
List <ShadowCaster2D> shadowCasters = shadowCasterGroup.GetShadowCasters();
int shadowGroupIndex = shadowCasterGroup.GetShadowGroup();
if (LightUtility.CheckForChange(shadowGroupIndex, ref previousShadowGroupIndex) || shadowGroupIndex == 0)
{
incrementingGroupIndex++;
shadowMaterial = GetShadowMaterial(incrementingGroupIndex);
removeSelfShadowMaterial = GetRemoveSelfShadowMaterial(incrementingGroupIndex);
}
if (shadowCasters != null)
{
// Draw the shadow casting group first, then draw the silhouttes..
for (int i = 0; i < shadowCasters.Count; i++)
{
ShadowCaster2D shadowCaster = (ShadowCaster2D)shadowCasters[i];
if (shadowCaster != null && shadowMaterial != null && shadowCaster.IsShadowedLayer(layerToRender))
{
if (shadowCaster.castsShadows)
{
cmdBuffer.DrawMesh(shadowCaster.mesh, shadowCaster.transform.localToWorldMatrix, shadowMaterial);
}
}
}
for (int i = 0; i < shadowCasters.Count; i++)
{
ShadowCaster2D shadowCaster = (ShadowCaster2D)shadowCasters[i];
if (shadowCaster != null && shadowMaterial != null && shadowCaster.IsShadowedLayer(layerToRender))
{
if (shadowCaster.useRendererSilhouette)
{
Renderer renderer = shadowCaster.GetComponent <Renderer>();
if (renderer != null)
{
if (!shadowCaster.selfShadows)
{
cmdBuffer.DrawRenderer(renderer, removeSelfShadowMaterial);
}
else
{
cmdBuffer.DrawRenderer(renderer, shadowMaterial, 0, 1);
}
}
}
else
{
if (!shadowCaster.selfShadows)
{
Matrix4x4 meshMat = shadowCaster.transform.localToWorldMatrix;
cmdBuffer.DrawMesh(shadowCaster.mesh, meshMat, removeSelfShadowMaterial);
}
}
}
}
}
}
}
ReleaseShadowRenderTexture(cmdBuffer);
cmdBuffer.SetRenderTarget(renderTexture, depthTexture);
}
}
