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Continue block shapes

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This commit is contained in:
Miloslav Ciz 2024-07-23 19:57:29 +02:00
parent 9e3bf000cf
commit c4d56de0d4
3 changed files with 124 additions and 25 deletions
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2
constants.h
View file

@ -16,6 +16,6 @@
(LCR_SETTING_FREE_CAMERA_TURN_SPEED / LCR_SETTING_FPS)
/** Maximum number of triangles of a block shape. */
#define LCR_MAP_BLOCK_SHAPE_MAX_BYTES 64
#define LCR_MAP_BLOCK_SHAPE_MAX_BYTES 80
#endif

125
map.h
View file

@ -274,13 +274,38 @@ const uint8_t *LCR_mapGetBlockAt(uint8_t x, uint8_t y, uint8_t z)
return 0;
}
uint8_t _LCR_encodeMapBlockCoords(uint8_t x, uint8_t y, uint8_t z)
{
return (5 * 7) * z + 7 * y + x;
}
void _LCR_decodeMapBlockCoords(uint8_t byte, uint8_t *x, uint8_t *y, uint8_t *z)
{
*x = (byte % 7);
*y = ((byte / 7) % 5);
*z = (byte / 35);
}
/**
Decodes XYZ coordinates encoded in a byte returned by LCR_mapGetBlockShape.
Each coordinate will be in range 0 to 12 (including both). This unusual range
is intentional as it for example has an exact mid value.
*/
void LCR_decodeMapBlockCoords(uint8_t byte, uint8_t *x, uint8_t *y, uint8_t *z)
{
_LCR_decodeMapBlockCoords(byte,x,y,z);
*x *= 2;
*y *= 3;
*z *= 2;
}
void _LCR_addBlockShapeByte(uint8_t *bytes, uint8_t *byteCount,
int x, int y, int z)
{
if (*byteCount >= LCR_MAP_BLOCK_SHAPE_MAX_BYTES)
return;
bytes[*byteCount] = (5 * 7) * z + 7 * y + x;
bytes[*byteCount] = _LCR_encodeMapBlockCoords(x,y,z);
*byteCount += 1;
}
@ -295,36 +320,104 @@ void LCR_mapGetBlockShape(uint8_t blockType, uint8_t transform,
{
/*
The coordinate format is following: byte B specifies coordinates X (0 to 6)
= B % 7, Y (vertical, 0 to 4) = (B / 7) % 5, Z (0 to 6) = B % 35.
= B % 7, Y (vertical, 0 to 4) = (B / 7) % 5, Z (0 to 6) = B % 35. Helper
side view grid:
4 . . . . . . . ^
3 . . . . . . . | y
2 . . . . . . .
1 . . . . . . .
0 . . . . . . .
0 1 2 3 4 5 6 -> x/z
*/
*byteCount = 0;
#define ADD(a,b,c) _LCR_addBlockShapeByte(bytes,byteCount,a,b,c);
switch (blockType)
{
case LCR_BLOCK_FULL:
default:
_LCR_addBlockShapeByte(bytes,byteCount,0,0,1);
_LCR_addBlockShapeByte(bytes,byteCount,5,0,1);
_LCR_addBlockShapeByte(bytes,byteCount,0,1,3);
ADD(0,0,0) ADD(5,0,0) ADD(0,1,3) // ramp
ADD(0,1,3) ADD(5,0,0) ADD(5,1,3)
ADD(0,1,3) ADD(5,1,3) ADD(0,2,4) // ramp
ADD(0,2,4) ADD(5,1,3) ADD(5,2,4)
ADD(0,2,4) ADD(5,2,4) ADD(0,4,5) // ramp
ADD(0,4,5) ADD(5,2,4) ADD(5,4,5)
ADD(0,4,5) ADD(5,4,5) ADD(0,4,6) // top
ADD(0,4,6) ADD(5,4,5) ADD(6,4,6)
ADD(5,4,5) ADD(6,4,0) ADD(6,4,6) // top
ADD(5,4,5) ADD(5,4,0) ADD(6,4,0)
ADD(5,4,0) ADD(5,4,5) ADD(5,2,4) // inner side
ADD(5,4,0) ADD(5,2,4) ADD(5,1,3)
ADD(5,4,0) ADD(5,1,3) ADD(5,0,0)
ADD(5,4,0) ADD(5,0,0) ADD(6,4,0) // front
ADD(6,4,0) ADD(5,0,0) ADD(6,0,0)
ADD(6,4,0) ADD(6,0,0) ADD(6,4,6) // right
ADD(6,4,6) ADD(6,0,0) ADD(6,0,6)
ADD(0,0,6) ADD(0,4,5) ADD(0,4,6) // left
ADD(0,0,6) ADD(0,2,4) ADD(0,4,5)
ADD(0,0,6) ADD(0,1,3) ADD(0,2,4)
ADD(0,0,6) ADD(0,0,0) ADD(0,1,3)
ADD(0,0,6) ADD(0,4,6) ADD(6,0,6) // back
ADD(6,0,6) ADD(0,4,6) ADD(6,4,6)
ADD(0,0,0) ADD(6,0,6) ADD(6,0,0) // bottom
ADD(0,0,0) ADD(0,0,6) ADD(6,0,6)
break;
}
}
/**
Decodes XYZ coordinates encoded in a byte returned by LCR_mapGetBlockShape.
Each coordinate will be in range 0 to 12 (including both). This unusual range
is intentional as it for example has an exact mid value.
*/
void LCR_decodeMapBlockCoords(uint8_t byte, uint8_t *x, uint8_t *y, uint8_t *z)
{
*x = (byte % 7) * 2;
*y = ((byte / 7) % 5) * 3;
*z = (byte % 35) * 2;
if (transform)
{
for (int i = 0; i < *byteCount; ++i)
{
uint8_t x, y, z, tmp;
_LCR_decodeMapBlockCoords(bytes[i],&x,&y,&z);
if (transform & LCR_BLOCK_TRANSFORM_FLIP_H)
x = 6 - x;
if (transform & 0x20) // for both 90 and 270
{
tmp = z;
z = x;
x = 6 - tmp;
}
if (transform & 0x40) // for both 180 and 270
{
x = 6 - x;
z = 6 - z;
}
if (transform & LCR_BLOCK_TRANSFORM_FLIP_V)
y = 4 - y;
bytes[i] = _LCR_encodeMapBlockCoords(x,y,z);
}
if (((transform & LCR_BLOCK_TRANSFORM_FLIP_H) == 0) !=
((transform & LCR_BLOCK_TRANSFORM_FLIP_V) == 0)) // flip triangles
for (int i = 0; i < *byteCount; i += 3)
{
uint8_t tmp = bytes[i];
bytes[i] = bytes[i + 1];
bytes[i + 1] = tmp;
}
}
#undef ADD
}
#endif // guard

22
renderer.h
View file

@ -13,6 +13,11 @@
#include "small3dlib.h"
/**
Renderer specific unit, length of one map square.
*/
#define LCR_RENDERER_UNIT S3L_FRACTIONS_PER_UNIT
struct LCR_Renderer
{
// TODO
@ -29,7 +34,7 @@ S3L_Index LCR_mapTriangles[LCR_SETTING_MAX_MAP_TRIANGLES * 3];
void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
{
LCR_drawPixelXYSafe(pixel->x,pixel->y,0xff00);
LCR_drawPixelXYSafe(pixel->x,pixel->y, 0xff00 + (pixel->triangleID % 16) * 16 );
}
S3L_Index _LCR_addMapVertex(S3L_Unit x, S3L_Unit y, S3L_Unit z)
@ -88,7 +93,10 @@ uint8_t _LCR_rendererBuildMapModel(void)
S3L_model3DInit(LCR_mapVertices,0,LCR_mapTriangles,0,LCR_mapModel);
LCR_mapGetBlockShape(0,0,blockShapeBytes,&blockShapeByteCount);
LCR_mapGetBlockShape(0,
LCR_BLOCK_TRANSFORM_ROT_270
,blockShapeBytes,&blockShapeByteCount);
uint8_t vx, vy, vz, vi = 0;
uint8_t *bytes = blockShapeBytes;
@ -98,12 +106,10 @@ for (int i = 0; i < blockShapeByteCount; ++i)
{
LCR_decodeMapBlockCoords(blockShapeBytes[i],&vx,&vy,&vz);
printf("%d: %d %d %d\n",blockShapeBytes[i],vx,vy,vz);
triangleIndices[vi] = _LCR_addMapVertex(
(LCR_SQUARE_SIDE_LEN * ((LCR_SpaceUnit) vx)) / 12,
(LCR_SQUARE_SIDE_LEN / 2 * ((LCR_SpaceUnit) vy)) / 12,
(LCR_SQUARE_SIDE_LEN * ((LCR_SpaceUnit) vz)) / 12);
triangleIndices[vi] = _LCR_addMapVertex(
(LCR_RENDERER_UNIT * ((S3L_Unit) vx)) / 12,
(LCR_RENDERER_UNIT / 2 * ((S3L_Unit) vy)) / 12,
(LCR_RENDERER_UNIT * ((S3L_Unit) vz)) / 12);
if (vi < 2)
vi++;