Remove entity map in favor of spatial grid

engine/breeze/utils/spatial_grid.h

@@ -0,0 +1,56 @@
+#ifndef BREEZE_SPATIAL_GRID_H
+#define BREEZE_SPATIAL_GRID_H
+
+#include "../defines.h"
+
+typedef struct BzSpatialGridIndex {
+    i32 minX, minY;
+    i32 maxX, maxY;
+} BzSpatialGridIndex;
+
+typedef i32 BzSpatialGridID;
+
+typedef struct BzSpatialGridEntry {
+    i32 queryIdx;
+    BzSpatialGridID id;
+    BzSpatialGridIndex index;
+} BzSpatialGridEntry;
+
+typedef struct BzSpatialGrid BzSpatialGrid;
+
+typedef struct BzSpatialGridIter {
+    BzSpatialGridEntry entry;
+    void *data;
+    BzSpatialGridIndex index;
+
+    BzSpatialGrid *_grid;
+    i32 _queryIdx;
+
+    i32 _x;
+    i32 _y;
+    i32 _cellIdx;
+} BzSpatialGridIter;
+
+typedef struct BzSpatialGridDesc {
+    i32 maxWidth;
+    i32 maxHeight;
+    i32 cellWidth;
+    i32 cellHeight;
+    i32 userDataSize;
+} BzSpatialGridDesc;
+
+BzSpatialGrid *bzSpatialGridCreate(const BzSpatialGridDesc *desc);
+void bzSpatialGridDestroy(BzSpatialGrid *grid);
+
+//void *bzSpatialGridGetData(const BzSpatialGrid *grid, BzSpatialGridID id);
+
+BzSpatialGridID bzSpatialGridInsert(BzSpatialGrid *grid, void *data, f32 posX, f32 posY, f32 sizeX, f32 sizeY);
+BzSpatialGridID bzSpatialGridUpdate(BzSpatialGrid *grid, BzSpatialGridID id, f32 posX, f32 posY, f32 sizeX, f32 sizeY);
+void bzSpatialGridRemove(BzSpatialGrid *grid, BzSpatialGridID id);
+
+BzSpatialGridIter bzSpatialGridIter(BzSpatialGrid *grid, f32 posX, f32 posY, f32 sizeX, f32 sizeY);
+bool bzSpatialGridQueryNext(BzSpatialGridIter *it);
+
+void bzSpatialGridDrawDebugGrid(const BzSpatialGrid *grid);
+
+#endif //BREEZE_SPATIAL_GRID_H