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make shape data identifiable by ID and rotation

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Quinn
2025-01-27 16:16:23 +01:00
parent b698a0e3d1
commit 1097c6e09d
3 changed files with 63 additions and 61 deletions
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40
src/game/tetromino/shapes.c Normal file
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#include "shapes.h"
/* 0 1 2 3 */
#define TET_SHAPE_O ((Shape)0xCC00) // 1100 1100 0000 0000 the O tetromino with no rotation
#define TET_SHAPE_I ((Shape)0x8888) // 1000 1000 1000 1000 the I tetromino with no rotation
#define TET_SHAPE_I_90 ((Shape)0x000F) // 0000 0000 0000 1111 the I tetromino with a no rotation
#define TET_SHAPE_S ((Shape)0x6C00) // 0110 1100 0000 0000 the S tetromino with no rotation
#define TET_SHAPE_S_90 ((Shape)0x8C40) // 1000 1100 0100 0000 the S tetromino with a no rotation
#define TET_SHAPE_Z ((Shape)0xC600) // 1100 0110 0000 0000 the Z tetromino with no rotation
#define TET_SHAPE_Z_90 ((Shape)0x4C80) // 0100 1100 1000 0000 the Z tetromino with a no rotation
#define TET_SHAPE_T ((Shape)0xE400) // 1110 0100 0000 0000 the T tetromino with no rotation
#define TET_SHAPE_T_90 ((Shape)0xCC80) // 1100 1100 1000 0000 the T tetromino with a no rotation
#define TET_SHAPE_T_180 ((Shape)0x4E00) // 0100 1110 0000 0000 the T tetromino with a 180° rotation
#define TET_SHAPE_T_270 ((Shape)0x2620) // 0010 0110 0010 0000 the T tetromino with a 270° rotation
#define TET_SHAPE_L ((Shape)0x88C0) // 1000 1000 1100 0000 the L tetromino with no rotation
#define TET_SHAPE_L_90 ((Shape)0xE800) // 1110 1000 0000 0000 the L tetromino with a no rotation
#define TET_SHAPE_L_180 ((Shape)0xC440) // 1100 0100 0100 0000 the L tetromino with a 180° rotation
#define TET_SHAPE_L_270 ((Shape)0x02E0) // 0000 0010 1110 0000 the L tetromino with a 270° rotation
#define TET_SHAPE_J ((Shape)0x44C0) // 0100 0100 1100 0000 the J tetromino with no rotation
#define TET_SHAPE_J_90 ((Shape)0x8E00) // 1000 1110 0000 0000 the J tetromino with a no rotation
#define TET_SHAPE_J_180 ((Shape)0xC880) // 1100 1000 1000 0000 the J tetromino with a 180° rotation
#define TET_SHAPE_J_270 ((Shape)0xC400) // 1110 0010 0000 0000 the J tetromino with a 270° rotation
Shape shape_from_id(ShapeId id) {
// clang-format off
static const Shape shapes[TETROMINO_COUNT][4] = {
// 0° 90° 180° 170°
{TET_SHAPE_O, TET_SHAPE_O, TET_SHAPE_O, TET_SHAPE_O},
{TET_SHAPE_I, TET_SHAPE_I_90, TET_SHAPE_I, TET_SHAPE_I_90},
{TET_SHAPE_S, TET_SHAPE_S_90, TET_SHAPE_S, TET_SHAPE_S_90},
{TET_SHAPE_Z, TET_SHAPE_Z_90, TET_SHAPE_Z, TET_SHAPE_Z_90},
{TET_SHAPE_T, TET_SHAPE_T_90, TET_SHAPE_T, TET_SHAPE_T_90},
{TET_SHAPE_L, TET_SHAPE_L_90, TET_SHAPE_L_180, TET_SHAPE_L_270},
{TET_SHAPE_J, TET_SHAPE_J_90, TET_SHAPE_J_180, TET_SHAPE_J_270},
};
// clang-format on
// first 3 bits is the shape type, the rest is rotation data
return shapes[id & 7][id >> 3];
}