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60 lines
1.9 KiB
60 lines
1.9 KiB
#ifndef __PS1BSP_H__
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#define __PS1BSP_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct
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{
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unsigned char w, h; // These may be necessary for scaling UVs, especially since we use a mix of mip0 and mip1 textures
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int tpage; // Texture page in PS1 VRAM (precalculated when generating the texture atlas)
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short uoffs, voffs; // Texture coordinate offset within the texture page
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unsigned short nextframe; // If non-zero, the texture is animated and this points to the next texture in the sequence
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} ps1bsp_texture_t;
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// This matches the SVECTOR data type, using the extra padding to store vertex color data.
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// 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.
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// 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.
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typedef struct
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{
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short x;
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short y;
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short z;
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unsigned char baseLight, finalLight; // Used for gouraud shading based on static lightmap data
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} ps1bsp_vertex_t;
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// Instead of edges as in the original BSP format, we store triangles for easy consumption by the PS1
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typedef struct
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{
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unsigned short vertex0;
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unsigned short vertex1;
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unsigned short vertex2;
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} ps1bsp_triangle_t;
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// Pre-parsed and encoded entity data (this runs the risk of becoming too bloated)
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typedef struct
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{
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unsigned short classtype; // Hash of the original classname
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short angle[3]; // Can store both mangle (all axes) and just angle (Z-axis rotation only)
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int origin[3]; // In 12-bit fixed point coordinates
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unsigned int spawnflags;
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unsigned short message_id; // Index into a pool of pre-defined messages
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} ps1bsp_entity_t;
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typedef struct
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{
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unsigned short length;
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char message[];
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} ps1bsp_message_t;
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typedef struct
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{
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// TODO: add floating origin position, so face vertices can be moved relative to the camera position
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} ps1bsp_leaf_t;
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#ifdef __cplusplus
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}
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#endif
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#endif // __PS1BSP_H__
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