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- add slope sprite support to the new renderer.

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Some fudging was needed to avoid positioning problems as the renderer is more sensitive to this than Polymost.
This commit is contained in:
Christoph Oelckers 2021-12-21 13:46:11 +01:00
parent 6fd4d6d550
commit beddf1e1ca
6 changed files with 85 additions and 35 deletions
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31
source/core/gamefuncs.cpp
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@ -274,12 +274,13 @@ void GetWallSpritePosition(const tspritetype* spr, vec2_t pos, vec2_t* out, bool
//
//==========================================================================
template<class sprt>
void TGetFlatSpritePosition(const sprt* spr, vec2_t pos, vec2_t* out, bool render)
void TGetFlatSpritePosition(const spritetypebase* spr, vec2_t pos, vec2_t* out, int* outz, int heinum, bool render)
{
auto tex = tileGetTexture(spr->picnum);
int width, height, leftofs, topofs;
int ratio = ksqrt(heinum * heinum + 4096 * 4096);
if (render && hw_hightile && TileFiles.tiledata[spr->picnum].hiofs.xsize)
{
width = TileFiles.tiledata[spr->picnum].hiofs.xsize * spr->xrepeat;
@ -303,26 +304,40 @@ void TGetFlatSpritePosition(const sprt* spr, vec2_t pos, vec2_t* out, bool rende
int cosang = bcos(spr->ang);
int sinang = bsin(spr->ang);
int cosangslope = DivScale(cosang, ratio, 12);
int sinangslope = DivScale(sinang, ratio, 12);
out[0].x = pos.x + DMulScale(sinang, sprcenterx, cosang, sprcentery, 16);
out[0].y = pos.y + DMulScale(sinang, sprcentery, -cosang, sprcenterx, 16);
out[0].x = pos.x + DMulScale(sinang, sprcenterx, cosangslope, sprcentery, 16);
out[0].y = pos.y + DMulScale(sinangslope, sprcentery, -cosang, sprcenterx, 16);
out[1].x = out[0].x - MulScale(sinang, width, 16);
out[1].y = out[0].y + MulScale(cosang, width, 16);
vec2_t sub = { MulScale(cosang, height, 16), MulScale(sinang, height, 16) };
vec2_t sub = { MulScale(cosangslope, height, 16), MulScale(sinangslope, height, 16) };
out[2] = out[1] - sub;
out[3] = out[0] - sub;
if (outz)
{
if (!heinum) outz[3] = outz[2] = outz[1] = outz[0] = 0;
else
{
for (int i = 0; i < 4; i++)
{
int spos = DMulScale(-sinang, out[i].y - spr->y, -cosang, out[i].x - spr->x, 4);
outz[i] = MulScale(heinum, spos, 18);
}
}
}
}
void GetFlatSpritePosition(const spritetype* spr, vec2_t pos, vec2_t* out, bool render)
{
TGetFlatSpritePosition(spr, pos, out, render);
TGetFlatSpritePosition(spr, pos, out, nullptr, spriteGetSlope(spr), render);
}
void GetFlatSpritePosition(const tspritetype* spr, vec2_t pos, vec2_t* out, bool render)
void GetFlatSpritePosition(const tspritetype* spr, vec2_t pos, vec2_t* out, int* outz, bool render)
{
TGetFlatSpritePosition(spr, pos, out, render);
TGetFlatSpritePosition(spr, pos, out, outz, tspriteGetSlope(spr), render);
}
//==========================================================================