public void AddGlobalUndo()
{
TerrainUndoStep[] steps = undoSteps.Peek();
if (steps.Length != terrains.Length)
{
Debug.LogWarning("Undo terrains mismatch"); return;
}
for (int t = 0; t < terrains.Length; t++)
{
if (steps[t] == null)
{
steps[t] = new TerrainUndoStep()
{
terrain = terrains[t]
}
}
;
if (steps[t].terrain != terrains[t])
{
Debug.LogWarning("Undo terrains mismatch"); return;
}
steps[t].Add(terrain.transform.position + terrain.terrainData.size / 2f, terrain.terrainData.size.x + 1);
}
}
public void AddUndo(Vector3 pos, float radius)
{
TerrainUndoStep[] steps = undoSteps.Peek();
if (steps.Length != terrains.Length)
{
Debug.LogWarning("Undo terrains mismatch"); return;
}
for (int t = 0; t < terrains.Length; t++)
{
if (steps[t] == null)
{
steps[t] = new TerrainUndoStep()
{
terrain = terrains[t]
}
}
;
if (steps[t].terrain != terrains[t])
{
Debug.LogWarning("Undo terrains mismatch"); return;
}
steps[t].Add(pos, radius);
}
}
public void TestUndo(Vector3 pos, float radius)
{
TerrainUndoStep[] terrainUndoSteps = new TerrainUndoStep[terrains.Length];
for (int t = 0; t < terrains.Length; t++)
{
terrainUndoSteps[t] = new TerrainUndoStep();
terrainUndoSteps[t].terrain = terrains[t];
terrainUndoSteps[t].Add(pos, radius);
}
for (int t = 0; t < terrains.Length; t++)
{
terrainUndoSteps[t].Perform();
}
}
public void PerformUndo()
{
if (currentUndoState < referenceUndoState) //performing undo
{
if (undoSteps.Count == 0)
{
return;
}
TerrainUndoStep[] steps = undoSteps.Pop();
//saving current state for redo
TerrainUndoStep[] rSteps = new TerrainUndoStep[steps.Length];
for (int t = 0; t < steps.Length; t++)
{
rSteps[t] = new TerrainUndoStep();
rSteps[t].GetCurrentState(steps[t]);
}
redoSteps.Push(rSteps);
//performing undo
for (int t = 0; t < steps.Length; t++)
{
steps[t].Perform();
}
}
else if (currentUndoState > referenceUndoState) //performing redo
{
if (redoSteps.Count == 0)
{
return;
}
TerrainUndoStep[] steps = redoSteps.Pop();
for (int t = 0; t < steps.Length; t++)
{
steps[t].Perform();
}
}
//if (currentUndoState == referenceUndoState) //non-brush update, doing nothing
referenceUndoState = currentUndoState;
}
public void GetCurrentState(TerrainUndoStep reference)
{
terrain = reference.terrain;
//heights
if (reference.heights != null)
{
heights = new Matrix2 <float[, ]>(reference.heights.rect);
for (int x = 0; x < heights.rect.size.x; x++)
{
for (int z = 0; z < heights.rect.size.z; z++)
{
if (reference.heights[x, z] != null)
{
heights[x, z] = terrain.terrainData.SafeGetHeights(x * cellSize, z * cellSize, cellSize, cellSize);
}
}
}
}
//splats
if (reference.splats != null)
{
splats = new Matrix2 <float[, , ]>(reference.splats.rect);
for (int x = 0; x < splats.rect.size.x; x++)
{
for (int z = 0; z < splats.rect.size.z; z++)
{
if (reference.splats[x, z] != null)
{
splats[x, z] = terrain.terrainData.SafeGetAlphamaps(x * cellSize, z * cellSize, cellSize, cellSize);
}
}
}
}
}