Add project files.

libhmap/include/hmap/hmap_c.h

@@ -0,0 +1,84 @@
+/* hmap/hmap_c.h - plain C API over libhmap for engines, scripting languages and FFI.
+ *
+ *   hmap_map* m = hmap_load("level.hmap", err, sizeof err);
+ *   for (uint32_t i = 0; i < hmap_batch_count(m); ++i) {
+ *       hmap_batch b; hmap_get_batch(m, i, &b);
+ *       // upload b.vertices / b.indices, bind texture hmap_material_texture(m, b.material)
+ *   }
+ *   hmap_trace t; hmap_trace_segment(m, from, to, HMAP_CONTENTS_SOLID, &t);
+ *   hmap_free(m);
+ *
+ * Units: map units, +Y up, forward -Z. Pointers stay valid until hmap_free().
+ */
+#ifndef HMAP_C_H
+#define HMAP_C_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define HMAP_CONTENTS_SOLID 1u
+#define HMAP_CONTENTS_WATER 2u
+#define HMAP_CONTENTS_CLIP 4u
+#define HMAP_CONTENTS_TRIGGER 8u
+#define HMAP_CONTENTS_SKY 16u
+
+typedef struct hmap_map hmap_map;
+
+typedef struct {
+    float pos[3];
+    float normal[3];
+    float uv[2];
+    uint32_t color; /* 0xAABBGGRR, baked vertex light */
+} hmap_vertex;
+
+typedef struct {
+    int32_t material;
+    int32_t model; /* 0 = world, >0 = brush-entity sub-model */
+    int32_t is_mesh; /* 0 = BSP/brush geometry, 1 = mesh object */
+    uint32_t vertex_count;
+    const hmap_vertex* vertices;
+    uint32_t index_count; /* triangle list */
+    const uint32_t* indices;
+} hmap_batch;
+
+typedef struct {
+    int hit;
+    float fraction;
+    float point[3];
+    float normal[3];
+    uint32_t contents;
+    uint32_t object_id;
+    int start_solid;
+} hmap_trace;
+
+/* Loads a .hmap file (compiled data is used when present, otherwise the source is compiled). */
+hmap_map* hmap_load(const char* path, char* err, size_t err_len);
+void hmap_free(hmap_map* m);
+
+uint32_t hmap_batch_count(const hmap_map* m);
+int hmap_get_batch(const hmap_map* m, uint32_t index, hmap_batch* out);
+
+uint32_t hmap_material_count(const hmap_map* m);
+const char* hmap_material_name(const hmap_map* m, uint32_t index);
+const char* hmap_material_texture(const hmap_map* m, uint32_t index);
+
+uint32_t hmap_entity_count(const hmap_map* m);
+const char* hmap_entity_classname(const hmap_map* m, uint32_t index);
+void hmap_entity_origin(const hmap_map* m, uint32_t index, float out[3]);
+void hmap_entity_angles(const hmap_map* m, uint32_t index, float out[3]); /* pitch, yaw, roll degrees */
+const char* hmap_entity_get(const hmap_map* m, uint32_t index, const char* key); /* NULL if missing */
+
+uint32_t hmap_point_contents(const hmap_map* m, const float p[3]);
+int hmap_trace_segment(const hmap_map* m, const float from[3], const float to[3], uint32_t mask, hmap_trace* out);
+
+int hmap_export_fbx(const hmap_map* m, const char* path); /* 1 on success */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HMAP_C_H */