Cleaning up hex functions

client/include/hex.h

@@ -13,6 +13,9 @@
 #define REGION_WIDTH (HEX_X*REGION_DIAMETER)
 #define REGION_HEIGHT (HEX_Z*REGION_DIAMETER)
 
+#define max(a, b) ((a > b) ? a : b)
+#define min(a, b) ((a < b) ? a : b)
+
 extern vec3 hex_vertices[];
 extern vec3 hex_starts[];
 extern vec3 hex_directions[];
@@ -80,10 +83,35 @@ VkResult create_hex_context(
     HexContext* context);
 
 VkResult set_hex_region(
+    HexRegion* region,
+    HexContext* hex,
+    RenderContext* gpu);
+
+VkResult allocate_hex_region(
     int32_t q, int32_t r, int32_t y,
     uint32_t map,
     HexRegion** region,
     HexContext* hex,
     RenderContext* gpu);
 
+bool ray_world_intersect(
+    float* distance,
+    uint32_t* rid,
+    uint32_t* hid,
+    vec4 ray_start,
+    vec4 ray_end,
+    HexContext* context);
+
+VkResult update_hex_proj(
+    RenderContext* gpu,
+    HexContext* hex);
+
+VkResult update_hex_view(
+    vec3 position,
+    vec2 rotation,
+    double distance,
+    mat4 inverse,
+    RenderContext* gpu,
+    HexContext* hex);
+
 #endif

client/src/hex.c

@@ -192,7 +192,12 @@ VkResult create_ray_pipeline(
     .basePipelineIndex = -1,
   };
 
-  VK_RESULT(vkCreateGraphicsPipelines(gpu->device, VK_NULL_HANDLE, 1, &graphics_pipeline_info, NULL, &pipeline->pipeline));
+  VK_RESULT(vkCreateGraphicsPipelines(
+        gpu->device,
+        VK_NULL_HANDLE,
+        1, &graphics_pipeline_info,
+        NULL,
+        &pipeline->pipeline));
   return VK_SUCCESS;
 }
 
@@ -347,7 +352,12 @@ VkResult create_hex_highlight_pipeline(
     .basePipelineIndex = -1,
   };
 
-  VK_RESULT(vkCreateGraphicsPipelines(gpu->device, VK_NULL_HANDLE, 1, &graphics_pipeline_info, NULL, &pipeline->pipeline));
+  VK_RESULT(vkCreateGraphicsPipelines(
+        gpu->device,
+        VK_NULL_HANDLE,
+        1, &graphics_pipeline_info,
+        NULL,
+        &pipeline->pipeline));
   return VK_SUCCESS;
 }
 
@@ -502,7 +512,12 @@ VkResult create_hex_pipeline(
     .basePipelineIndex = -1,
   };
 
-  VK_RESULT(vkCreateGraphicsPipelines(gpu->device, VK_NULL_HANDLE, 1, &graphics_pipeline_info, NULL, &pipeline->pipeline));
+  VK_RESULT(vkCreateGraphicsPipelines(
+        gpu->device,
+        VK_NULL_HANDLE,
+        1, &graphics_pipeline_info,
+        NULL,
+        &pipeline->pipeline));
   return VK_SUCCESS;
 }
 
@@ -518,7 +533,12 @@ VkResult create_hex_context(
   VK_RESULT(create_hex_highlight_pipeline(gpu, &context->highlight_pipeline));
 
   memset(&context->data, 0, sizeof(GPUHexContext));
-  glm_perspective(PERSPECTIVE_FOVY, (float)gpu->swapchain_extent.width/(float)gpu->swapchain_extent.height, PERSPECTIVE_NEARZ, PERSPECTIVE_FARZ, context->data.proj);
+  glm_perspective(
+      PERSPECTIVE_FOVY,
+      (float)gpu->swapchain_extent.width/(float)gpu->swapchain_extent.height,
+      PERSPECTIVE_NEARZ,
+      PERSPECTIVE_FARZ,
+      context->data.proj);
   glm_mat4_identity(context->data.view);
   for(uint32_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
     VK_RESULT(create_storage_buffer(
@@ -529,12 +549,53 @@ VkResult create_hex_context(
           &context->context_memory[i]));
     context->address[i] = buffer_address(gpu->device, context->context[i]);
   }
-  VK_RESULT(add_transfers(&context->data, context->context, 0, sizeof(GPUHexContext), gpu));
+  VK_RESULT(add_transfers(
+        &context->data,
+        context->context,
+        0,
+        sizeof(GPUHexContext),
+        gpu));
 
   return VK_SUCCESS;
 }
 
-VkResult set_hex_region(int32_t q, int32_t r, int32_t y, uint32_t map, HexRegion** region, HexContext* hex, RenderContext* gpu) {
+VkResult set_hex_region(HexRegion* region, HexContext* hex, RenderContext* gpu) {
+  uint32_t index = UINT32_MAX;
+  for(uint32_t i = 0; i < MAX_LOADED_REGIONS; i++) {
+    if(hex->regions[i] == region) {
+      index = i;
+      break;
+    }
+  }
+  if(index == UINT32_MAX) {
+    return VK_ERROR_UNKNOWN;
+  }
+
+  VkResult result;
+  VK_RESULT(add_transfer(
+        &region->data.hexes,
+        region->region,
+        offsetof(GPUHexRegion, hexes),
+        sizeof(GPUHex)*REGION_HEX_COUNT,
+        gpu->current_frame,
+        gpu));
+
+  return add_transfers(
+        &region->address,
+        hex->context,
+        offsetof(GPUHexContext, regions) + sizeof(VkDeviceAddress)*index,
+        sizeof(VkDeviceAddress),
+        gpu);
+}
+
+VkResult allocate_hex_region(
+    int32_t q,
+    int32_t r,
+    int32_t y,
+    uint32_t map,
+    HexRegion** region,
+    HexContext* hex,
+    RenderContext* gpu) {
   VkResult result;
 
   uint32_t i = 0;
@@ -560,11 +621,221 @@ VkResult set_hex_region(int32_t q, int32_t r, int32_t y, uint32_t map, HexRegion
         sizeof(GPUHexRegion),
         &(*region)->region,
         &(*region)->region_memory));
-  VK_RESULT(add_transfer(&(*region)->data.q, (*region)->region, offsetof(GPUHexRegion, q), sizeof(int32_t)*3 + sizeof(uint32_t), gpu->current_frame, gpu));
+  VK_RESULT(add_transfer(
+        &(*region)->data.q,
+        (*region)->region,
+        offsetof(GPUHexRegion, q),
+        sizeof(int32_t)*3 + sizeof(uint32_t),
+        gpu->current_frame,
+        gpu));
 
   (*region)->address = buffer_address(gpu->device, (*region)->region);
-  // TODO: load hex data before setting address so that data is synchronized
-  VK_RESULT(add_transfers(&(*region)->address, hex->context, offsetof(GPUHexContext, regions) + sizeof(VkDeviceAddress)*i, sizeof(VkDeviceAddress), gpu)); 
 
   return VK_SUCCESS;
 }
+
+bool ray_hex_intersect(
+    float* distance,
+    vec3 start,
+    vec3 dir,
+    vec3 region_offset,
+    uint32_t hex_index,
+    HexRegion* region) {
+  GPUHex* hex = &region->data.hexes[hex_index];
+
+  float center_height = (hex->height[0]
+                       + hex->height[1]
+                       + hex->height[2]
+                       + hex->height[3]
+                       + hex->height[4]
+                       + hex->height[5])/6;
+
+  vec3 vertices[7] = {
+    {0, 0, 0},
+  };
+  glm_vec3_add(vertices[0], region_offset, vertices[0]);
+  glm_vec3_add(hex_vertices[0], region_offset, vertices[1]);
+  glm_vec3_add(hex_vertices[1], region_offset, vertices[2]);
+  glm_vec3_add(hex_vertices[2], region_offset, vertices[3]);
+  glm_vec3_add(hex_vertices[3], region_offset, vertices[4]);
+  glm_vec3_add(hex_vertices[4], region_offset, vertices[5]);
+  glm_vec3_add(hex_vertices[5], region_offset, vertices[6]);
+
+  vertices[0][1] += center_height;
+  vertices[1][1] += hex->height[0];
+  vertices[2][1] += hex->height[1];
+  vertices[3][1] += hex->height[2];
+  vertices[4][1] += hex->height[3];
+  vertices[5][1] += hex->height[4];
+  vertices[6][1] += hex->height[5];
+
+  vec3 hex_offset = {0, 0, 0};
+  float radius = 0;
+  float ring = 0;
+  int side = 0;
+  if(hex_index != 0) {
+    radius = floor(0.5 + sqrt(12*hex_index-3)/6);
+    ring = hex_index - (3*radius*radius - 3*radius + 1);
+    side = floor(ring/radius);
+  }
+
+  glm_vec3_muladds(hex_starts[side], radius, hex_offset);
+  glm_vec3_muladds(hex_directions[side], ring-(radius*side), hex_offset);
+  for(uint32_t vertex = 0; vertex < 7; vertex++) {
+    glm_vec3_add(vertices[vertex], hex_offset, vertices[vertex]);
+  }
+
+  *distance = INFINITY;
+  bool intersect = false;
+
+  for(uint32_t triangle = 0; triangle < 6; triangle++) {
+    vec3 vert[3];
+    for(int v_i = 0; v_i < 3; v_i++) {
+      vert[v_i][0] = vertices[hex_indices[triangle*3+v_i]][0];
+      vert[v_i][1] = vertices[hex_indices[triangle*3+v_i]][1];
+      vert[v_i][2] = vertices[hex_indices[triangle*3+v_i]][2];
+    }
+
+    vec3 v0v1;
+    glm_vec3_sub(vert[1], vert[0], v0v1);
+    vec3 v0v2;
+    glm_vec3_sub(vert[2], vert[0], v0v2);
+    vec3 pvec;
+    glm_vec3_cross(dir, v0v2, pvec);
+    float det = glm_vec3_dot(v0v1, pvec);
+
+    float det_inv = 1/det;
+
+    vec3 t;
+    glm_vec3_sub(start, vert[0], t);
+    float u = glm_vec3_dot(t, pvec) * det_inv;
+    if(u < 0 || u > 1) continue;
+
+    vec3 q;
+    glm_vec3_cross(t, v0v1, q);
+    float v = glm_vec3_dot(dir, q) * det_inv;
+    if(v < 0 || (u+v) > 1) continue;
+
+    intersect = true;
+    *distance = min(*distance, glm_vec3_dot(v0v2, q) * det_inv);
+  }
+
+  return intersect;
+}
+
+bool ray_region_intersect(
+    float* distance,
+    uint32_t* hid,
+    vec3 start,
+    vec3 dir,
+    HexRegion* region) {
+  bool intersect = false;
+  float temp_distance;
+  *distance = INFINITY;
+
+   vec3 region_offset = {
+     ((float)region->data.q + (float)region->data.r/2)*REGION_WIDTH - region->data.r*HEX_X/2,
+     0,
+     0.75*region->data.r*REGION_HEIGHT + 0.25*region->data.r*HEX_Z + 0.5*region->data.q*HEX_Z,
+   };
+
+  for(uint32_t temp_hid = 0; temp_hid < REGION_HEX_COUNT; temp_hid++) {
+    if(ray_hex_intersect(&temp_distance, start, dir, region_offset, temp_hid, region)) {
+      if(temp_distance < *distance) {
+        intersect = true;
+        *hid = temp_hid;
+        *distance = temp_distance;
+      }
+    }
+  }
+
+  return intersect;
+}
+
+bool ray_world_intersect(
+    float* distance,
+    uint32_t* rid,
+    uint32_t* hid,
+    vec4 ray_start,
+    vec4 ray_end,
+    HexContext* context) {
+  vec3 start;
+  start[0] = ray_start[0]/ray_start[3];
+  start[1] = ray_start[1]/ray_start[3];
+  start[2] = ray_start[2]/ray_start[3];
+
+  vec3 end;
+  end[0] = ray_end[0]/ray_end[3];
+  end[1] = ray_end[1]/ray_end[3];
+  end[2] = ray_end[2]/ray_end[3];
+
+  vec3 dir;
+  dir[0] = end[0] - start[0];
+  dir[1] = end[1] - start[1];
+  dir[2] = end[2] - start[2];
+  float mdir = glm_vec3_norm(dir);
+  glm_vec3_divs(dir, mdir, dir);
+
+  bool intersect = false;
+  float temp_distance;
+  uint32_t temp_hid;
+  *distance = INFINITY;
+
+  for(uint32_t temp_rid = 0; temp_rid < MAX_LOADED_REGIONS; temp_rid++) {
+    HexRegion* region = context->regions[temp_rid];
+    if(region == NULL) {
+      continue;
+    } else if(region->data.map != context->data.current_map) {
+      continue;
+    }
+
+    if(ray_region_intersect(&temp_distance, &temp_hid, start, dir, region)) {
+      if(temp_distance < *distance) {
+        intersect = true;
+        *hid = temp_hid;
+        *rid = temp_rid;
+        *distance = temp_distance;
+      }
+    }
+  }
+
+  return intersect;
+}
+
+VkResult update_hex_proj(RenderContext* gpu, HexContext* hex) {
+  glm_perspective(
+      PERSPECTIVE_FOVY,
+      (float)gpu->swapchain_extent.width/(float)gpu->swapchain_extent.height,
+      PERSPECTIVE_NEARZ,
+      PERSPECTIVE_FARZ,
+      hex->data.proj);
+  return add_transfers(
+        &hex->data.proj,
+        hex->context,
+        offsetof(GPUHexContext, proj),
+        sizeof(mat4),
+        gpu);
+}
+
+vec3 up = {0, 1, 0};
+
+VkResult update_hex_view(
+    vec3 position,
+    vec2 rotation,
+    double distance,
+    mat4 inverse,
+    RenderContext* gpu,
+    HexContext* hex) {
+  vec3 camera = {};
+  camera[0] = position[0] + distance*cos(rotation[1])*cos(rotation[0]);
+  camera[1] = position[1] + distance*sin(rotation[1]);
+  camera[2] = position[2] + distance*cos(rotation[1])*sin(rotation[0]);
+
+  glm_lookat(camera, position, up, hex->data.view);
+
+  mat4 regular;
+  glm_mat4_mul(hex->data.proj, hex->data.view, regular);
+  glm_mat4_inv(regular, inverse);
+
+  return add_transfers(&hex->data, hex->context, 0, 2*sizeof(mat4), gpu);
+}

client/src/main.c

@@ -17,9 +17,6 @@
 #include <math.h>
 #include <stdlib.h>
 
-#define max(a, b) ((a > b) ? a : b)
-#define min(a, b) ((a < b) ? a : b)
-
 typedef struct ClientContextStruct {
   GLFWwindow* window;
   RenderContext* render;
@@ -56,165 +53,6 @@ void* network_thread(void* data) {
   return NULL;
 }
 
-bool ray_hex_intersect(float* distance, vec3 start, vec3 dir, vec3 region_offset, uint32_t hex_index, HexRegion* region) {
-  /*
-  Ray-hexagon intersection
-  1. For each triangle in the hexagon, check for intersection
-  2. If intersections, return the closest along the ray
-  */
-
-  GPUHex* hex = &region->data.hexes[hex_index];
-
-  float center_height = (hex->height[0]
-                       + hex->height[1]
-                       + hex->height[2]
-                       + hex->height[3]
-                       + hex->height[4]
-                       + hex->height[5])/6;
-
-  vec3 vertices[7] = {
-    {0, 0, 0},
-  };
-  glm_vec3_add(vertices[0], region_offset, vertices[0]);
-  glm_vec3_add(hex_vertices[0], region_offset, vertices[1]);
-  glm_vec3_add(hex_vertices[1], region_offset, vertices[2]);
-  glm_vec3_add(hex_vertices[2], region_offset, vertices[3]);
-  glm_vec3_add(hex_vertices[3], region_offset, vertices[4]);
-  glm_vec3_add(hex_vertices[4], region_offset, vertices[5]);
-  glm_vec3_add(hex_vertices[5], region_offset, vertices[6]);
-
-  vertices[0][1] += center_height;
-  vertices[1][1] += hex->height[0];
-  vertices[2][1] += hex->height[1];
-  vertices[3][1] += hex->height[2];
-  vertices[4][1] += hex->height[3];
-  vertices[5][1] += hex->height[4];
-  vertices[6][1] += hex->height[5];
-
-  vec3 hex_offset = {0, 0, 0};
-  float radius = 0;
-  float ring = 0;
-  int side = 0;
-  if(hex_index != 0) {
-    radius = floor(0.5 + sqrt(12*hex_index-3)/6);
-    ring = hex_index - (3*radius*radius - 3*radius + 1);
-    side = floor(ring/radius);
-  }
-
-  glm_vec3_muladds(hex_starts[side], radius, hex_offset);
-  glm_vec3_muladds(hex_directions[side], ring-(radius*side), hex_offset);
-  for(uint32_t vertex = 0; vertex < 7; vertex++) {
-    glm_vec3_add(vertices[vertex], hex_offset, vertices[vertex]);
-  }
-
-  *distance = INFINITY;
-  bool intersect = false;
-
-  for(uint32_t triangle = 0; triangle < 6; triangle++) {
-    vec3 vert[3];
-    for(int v_i = 0; v_i < 3; v_i++) {
-      vert[v_i][0] = vertices[hex_indices[triangle*3+v_i]][0];
-      vert[v_i][1] = vertices[hex_indices[triangle*3+v_i]][1];
-      vert[v_i][2] = vertices[hex_indices[triangle*3+v_i]][2];
-    }
-
-    vec3 v0v1;
-    glm_vec3_sub(vert[1], vert[0], v0v1);
-    vec3 v0v2;
-    glm_vec3_sub(vert[2], vert[0], v0v2);
-    vec3 pvec;
-    glm_vec3_cross(dir, v0v2, pvec);
-    float det = glm_vec3_dot(v0v1, pvec);
-
-    float det_inv = 1/det;
-
-    vec3 t;
-    glm_vec3_sub(start, vert[0], t);
-    float u = glm_vec3_dot(t, pvec) * det_inv;
-    if(u < 0 || u > 1) continue;
-
-    vec3 q;
-    glm_vec3_cross(t, v0v1, q);
-    float v = glm_vec3_dot(dir, q) * det_inv;
-    if(v < 0 || (u+v) > 1) continue;
-
-    intersect = true;
-    *distance = min(*distance, glm_vec3_dot(v0v2, q) * det_inv);
-  }
-
-  return intersect;
-}
-
-bool ray_region_intersect(float* distance, uint32_t* hid, vec3 start, vec3 dir, HexRegion* region) {
-  bool intersect = false;
-  float temp_distance;
-  *distance = INFINITY;
-
-   vec3 region_offset = {
-     ((float)region->data.q + (float)region->data.r/2)*REGION_WIDTH - region->data.r*HEX_X/2,
-     0,
-     0.75*region->data.r*REGION_HEIGHT + 0.25*region->data.r*HEX_Z + 0.5*region->data.q*HEX_Z,
-   };
-
-  for(uint32_t temp_hid = 0; temp_hid < REGION_HEX_COUNT; temp_hid++) {
-    if(ray_hex_intersect(&temp_distance, start, dir, region_offset, temp_hid, region)) {
-      if(temp_distance < *distance) {
-        intersect = true;
-        *hid = temp_hid;
-        *distance = temp_distance;
-      }
-    }
-  }
-
-  return intersect;
-}
-
-bool ray_world_intersect(float* distance, uint32_t* rid, uint32_t* hid, vec4 ray_start, vec4 ray_end, HexContext* context) {
-  vec3 start;
-  start[0] = ray_start[0]/ray_start[3];
-  start[1] = ray_start[1]/ray_start[3];
-  start[2] = ray_start[2]/ray_start[3];
-
-  vec3 end;
-  end[0] = ray_end[0]/ray_end[3];
-  end[1] = ray_end[1]/ray_end[3];
-  end[2] = ray_end[2]/ray_end[3];
-
-  vec3 dir;
-  dir[0] = end[0] - start[0];
-  dir[1] = end[1] - start[1];
-  dir[2] = end[2] - start[2];
-  float mdir = glm_vec3_norm(dir);
-  glm_vec3_divs(dir, mdir, dir);
-
-  bool intersect = false;
-  float temp_distance;
-  uint32_t temp_hid;
-  *distance = INFINITY;
-
-  for(uint32_t temp_rid = 0; temp_rid < MAX_LOADED_REGIONS; temp_rid++) {
-    HexRegion* region = context->regions[temp_rid];
-    if(region == NULL) {
-      continue;
-    } else if(region->data.map != context->data.current_map) {
-      continue;
-    }
-
-    if(ray_region_intersect(&temp_distance, &temp_hid, start, dir, region)) {
-      if(temp_distance < *distance) {
-        intersect = true;
-        *hid = temp_hid;
-        *rid = temp_rid;
-        *distance = temp_distance;
-      }
-    }
-  }
-
-  return intersect;
-}
-
-vec3 up = {0, 1, 0};
-
 VkResult main_thread(ClientContext* context) {
   VkResult result;
 
@@ -257,12 +95,17 @@ VkResult main_thread(ClientContext* context) {
   };
 
   context->hex->data.current_map = 0x01;
-  add_transfers(&context->hex->data.current_map, context->hex->context, offsetof(GPUHexContext, current_map), sizeof(uint32_t), context->render);
+  VK_RESULT(add_transfers(
+        &context->hex->data.current_map,
+        context->hex->context,
+        offsetof(GPUHexContext, current_map),
+        sizeof(uint32_t),
+        context->render));
 
   uint32_t region = 0;
   for(int32_t q = -5; q < 5; q++) {
     for(int32_t r = -5; r < 5; r++) {
-      VK_RESULT(set_hex_region(q, r, 0, 0x01, &regions[region], context->hex, context->render));
+      VK_RESULT(allocate_hex_region(q, r, 0, 0x01, &regions[region], context->hex, context->render));
       for(uint32_t i = 0; i < REGION_HEX_COUNT; i++) {
         for(uint32_t h = 0; h < 6; h++) {
           regions[region]->data.hexes[i].color[h] = colors[(q+r+50) % (sizeof(colors)/sizeof(uint32_t))];
@@ -270,7 +113,7 @@ VkResult main_thread(ClientContext* context) {
         }
         regions[region]->data.hexes[i].color[6] = colors[(q+r+50) % (sizeof(colors)/sizeof(uint32_t))];
       }
-      VK_RESULT(add_transfer(&regions[region]->data.hexes, regions[region]->region, offsetof(GPUHexRegion, hexes), sizeof(GPUHex)*REGION_HEX_COUNT, context->render->current_frame, context->render));
+      VK_RESULT(set_hex_region(regions[region], context->hex, context->render));
       region++;
     }
   }
@@ -302,18 +145,7 @@ VkResult main_thread(ClientContext* context) {
        context->render->framebuffer_recreated == true) && frame > 0) {
       if(context->render->framebuffer_recreated == true) {
         context->render->framebuffer_recreated = false;
-        glm_perspective(
-            PERSPECTIVE_FOVY,
-            (float)context->render->swapchain_extent.width/(float)context->render->swapchain_extent.height,
-            PERSPECTIVE_NEARZ,
-            PERSPECTIVE_FARZ,
-            context->hex->data.proj);
-        VK_RESULT(add_transfers(
-              &context->hex->data.proj,
-              context->hex->context,
-              offsetof(GPUHexContext, proj),
-              sizeof(mat4),
-              context->render));
+        VK_RESULT(update_hex_proj(context->render, context->hex));
       }
 
       context->rotation[0] += (float)context->key_spin[0]*delta_time*context->key_spin_speed; 
@@ -337,18 +169,13 @@ VkResult main_thread(ClientContext* context) {
         context->distance = 1;
       }
 
-      vec3 camera = {};
-      camera[0] = context->position[0] + context->distance*cos(context->rotation[1])*cos(context->rotation[0]);
-      camera[1] = context->position[1] + context->distance*sin(context->rotation[1]);
-      camera[2] = context->position[2] + context->distance*cos(context->rotation[1])*sin(context->rotation[0]);
-
-      glm_lookat(camera, context->position, up, context->hex->data.view);
-
-      mat4 regular;
-      glm_mat4_mul(context->hex->data.proj, context->hex->data.view, regular);
-      glm_mat4_inv(regular, context->inverse);
-
-      add_transfers(&context->hex->data, context->hex->context, 0, 2*sizeof(mat4), context->render);
+      VK_RESULT(update_hex_view(
+            context->position,
+            context->rotation,
+            context->distance,
+            context->inverse,
+            context->render,
+            context->hex));
     }
 
     if(context->clicked_hex[0] != 0 || context->clicked_hex[1] != 0) {
@@ -496,6 +323,8 @@ void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
             context->hex->data.click_start,
             context->hex->data.click_end,
             context->hex)) {
+        context->clicked_hex[0] = context->hex->data.clicked_region;
+        context->clicked_hex[1] = context->hex->data.clicked_hex;
         add_transfers(
             &context->hex->data.clicked_region,
             context->hex->context,
@@ -515,7 +344,10 @@ void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
             if(context->ui->containers[c].layers[l].drawables_buffer[d].id == 0x00000000) {
               continue;
             }
-            if(contains(cursor, &context->ui->containers[c].data, &context->ui->containers[c].layers[l].drawables_buffer[d])) {
+            if(contains(
+                  cursor,
+                  &context->ui->containers[c].data,
+                  &context->ui->containers[c].layers[l].drawables_buffer[d])) {
               context->clicked_container = context->ui->containers[c].id;
               context->clicked_element = context->ui->containers[c].layers[l].drawables_buffer[d].id;
             }