roleplay/client/include/hex.h

#ifndef HEX_H
#define HEX_H

#include "gpu.h"

#define REGION_SIZE (10)
#define REGION_HEX_COUNT (3*REGION_SIZE*(REGION_SIZE-1)+1)
#define MAX_LOADED_REGIONS (25*25)

typedef struct GPUHexStruct {
  float    height[6];
  uint32_t color[7];
} GPUHex;

typedef struct GPUHexRegionStruct {
  int32_t q;
  int32_t r;
  int32_t y;
  uint32_t map;

  GPUHex hexes[REGION_HEX_COUNT];
} GPUHexRegion;

typedef struct HexRegionStruct {
  VkDeviceAddress address;
  VkBuffer region;
  VmaAllocation region_memory;

  GPUHexRegion data;
} HexRegion;

typedef struct GPUHexContextStruct {
  mat4 proj;
  mat4 view;
  vec4 click_start;
  vec4 click_end;
  vec4 hover_start;
  vec4 hover_end;
  uint32_t clicked_region;
  int32_t  clicked_hex;
  uint32_t hovered_region;
  int32_t  hovered_hex;
  VkDeviceAddress regions[MAX_LOADED_REGIONS];
} GPUHexContext;

typedef struct HexContextStruct {
  VkDeviceAddress address;
  VkBuffer        context;
  VmaAllocation   context_memory; 

  GraphicsPipeline graphics;
  GraphicsPipeline ray_pipeline;
  GraphicsPipeline highlight_pipeline;

  HexRegion regions[MAX_LOADED_REGIONS];

  GPUHexContext data;
} HexContext;

typedef struct HexPushConstantStruct {
  VkDeviceAddress context;
  double time;
} HexPushConstant;

VkResult create_hex_context(
  RenderContext* gpu,
  HexContext* context);

VkResult set_hex_region(
  int32_t q, int32_t r, int32_t y,
  uint32_t map,
  HexRegion** region,
  HexContext* hex,
  RenderContext* gpu);

#endif