forked from 0ad/0ad
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
#include "precompiled.h"
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#include "MessageHandler.h"
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#include "../CommandProc.h"
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#include "graphics/Terrain.h"
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#include "ps/Game.h"
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namespace AtlasMessage {
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BEGIN_COMMAND(AlterElevation)
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// TODO: much more efficient version of this, and without the memory leaks
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u16* OldTerrain;
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u16* NewTerrain;
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void Construct()
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{
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OldTerrain = NewTerrain = NULL;
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}
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void Destruct()
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{
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delete OldTerrain;
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delete NewTerrain;
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}
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void Do()
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{
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CTerrain* terrain = g_Game->GetWorld()->GetTerrain();
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int verts = terrain->GetVerticesPerSide()*terrain->GetVerticesPerSide();
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OldTerrain = new u16[verts];
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memcpy(OldTerrain, terrain->GetHeightMap(), verts*sizeof(u16));
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int amount = (int)d->amount;
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// debug_printf("%d\n", amount);
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// If the thing's being updated very fast, 'amount' is often very
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// small (even zero) so the integer truncation is significant
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static float roundingError = 0.0;
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roundingError += d->amount - (float)amount;
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if (roundingError >= 1.f)
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{
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amount += (int)roundingError;
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roundingError -= (float)(int)roundingError;
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}
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CVector3D vec;
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d->pos.GetWorldSpace(vec);
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uint32_t x, z;
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terrain->CalcFromPosition(vec, x, z);
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terrain->RaiseVertex(x, z, amount);
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terrain->MakeDirty(x, z, x, z);
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}
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void Undo()
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{
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CTerrain* terrain = g_Game->GetWorld()->GetTerrain();
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if (! NewTerrain)
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{
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int verts = terrain->GetVerticesPerSide()*terrain->GetVerticesPerSide();
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NewTerrain = new u16[verts];
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memcpy(NewTerrain, terrain->GetHeightMap(), verts*sizeof(u16));
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}
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terrain->SetHeightMap(OldTerrain); // CTerrain duplicates the data
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}
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void Redo()
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{
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CTerrain* terrain = g_Game->GetWorld()->GetTerrain();
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terrain->SetHeightMap(NewTerrain); // CTerrain duplicates the data
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}
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void MergeWithSelf(cAlterElevation* prev)
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{
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std::swap(prev->NewTerrain, NewTerrain);
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}
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END_COMMAND(AlterElevation);
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}
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