add particles collision detection

src/voxels/Chunks.cpp

@@ -61,10 +61,10 @@ voxel* Chunks::get(int32_t x, int32_t y, int32_t z) const {
     return &chunk->voxels[(y * CHUNK_D + lz) * CHUNK_W + lx];
 }
 
-const AABB* Chunks::isObstacleAt(float x, float y, float z) {
-    int ix = floor(x);
-    int iy = floor(y);
-    int iz = floor(z);
+const AABB* Chunks::isObstacleAt(float x, float y, float z) const {
+    int ix = std::floor(x);
+    int iy = std::floor(y);
+    int iz = std::floor(z);
     voxel* v = get(ix, iy, iz);
     if (v == nullptr) {
         if (iy >= CHUNK_H) {
@@ -172,8 +172,9 @@ Chunk* Chunks::getChunk(int x, int z) {
 }
 
 glm::ivec3 Chunks::seekOrigin(
-    glm::ivec3 pos, const Block& def, blockstate state
-) {
+    const glm::ivec3& srcpos, const Block& def, blockstate state
+) const {
+    auto pos = srcpos;
     const auto& rotation = def.rotations.variants[state.rotation];
     auto segment = state.segment;
     while (true) {

src/voxels/Chunks.hpp

@@ -69,7 +69,9 @@ public:
     /// @param def segment block definition
     /// @param state segment block state
     /// @return origin block position or `pos` if block is not extended
-    glm::ivec3 seekOrigin(glm::ivec3 pos, const Block& def, blockstate state);
+    glm::ivec3 seekOrigin(
+        const glm::ivec3& pos, const Block& def, blockstate state
+    ) const;
 
     /// @brief Check if required zone is replaceable
     /// @param def definition of the block that requires a replaceable zone
@@ -97,7 +99,12 @@ public:
 
     glm::vec3 rayCastToObstacle(glm::vec3 start, glm::vec3 dir, float maxDist);
 
-    const AABB* isObstacleAt(float x, float y, float z);
+    const AABB* isObstacleAt(float x, float y, float z) const;
+
+    const AABB* isObstacleAt(const glm::vec3& pos) const {
+        return isObstacleAt(pos.x, pos.y, pos.z);
+    }
+    
     bool isSolidBlock(int32_t x, int32_t y, int32_t z);
     bool isReplaceableBlock(int32_t x, int32_t y, int32_t z);
     bool isObstacleBlock(int32_t x, int32_t y, int32_t z);