#ifndef __PS1BSP_H__
#define __PS1BSP_H__

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
	unsigned char w, h;			// These may be necessary for scaling UVs, especially since we use a mix of mip0 and mip1 textures
	int tpage;					// Texture page in PS1 VRAM (precalculated when generating the texture atlas)
	short uoffs, voffs;			// Texture coordinate offset within the texture page
	unsigned short nextframe;	// If non-zero, the texture is animated and this points to the next texture in the sequence
} ps1bsp_texture_t;

// This matches the SVECTOR data type, using the extra padding to store vertex color data.
// The full range and precision required cannot be stored in just shorts, so we make use of a floating origin stored in the BSP leafs.
// With this the higher-order bits of each vertex position are calculated into the model-view matrix, giving good precision for polygons near the camera.
typedef struct
{
	short x;
	short y;
	short z;
	unsigned char baseLight, finalLight;	// Used for gouraud shading based on static lightmap data
} ps1bsp_vertex_t;

// Instead of edges as in the original BSP format, we store triangles for easy consumption by the PS1
typedef struct
{
	unsigned short vertex0;
	unsigned short vertex1;
	unsigned short vertex2;
} ps1bsp_triangle_t;

// Pre-parsed and encoded entity data (this runs the risk of becoming too bloated)
typedef struct
{
	unsigned short classtype;	// Hash of the original classname
	short angle[3];				// Can store both mangle (all axes) and just angle (Z-axis rotation only)
	int origin[3];				// In 12-bit fixed point coordinates
	unsigned int spawnflags;
	unsigned short message_id;	// Index into a pool of pre-defined messages
} ps1bsp_entity_t;

typedef struct
{
	unsigned char length;
	char message[];
} ps1bsp_message_t;

typedef struct
{
	// TODO: add floating origin position, so face vertices can be moved relative to the camera position
} ps1bsp_leaf_t;

#ifdef __cplusplus
}
#endif

#endif	// __PS1BSP_H__