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Fix bounds checks in drawentity()

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The existing bounds checks were correct sometimes but other times were
not.

The bounds check for 2x2 and 2x1 sprites only covered the top-left
sprite drawn; the other sprites could still be out of bounds. But if the
top-left sprite was out of bounds, then none of the other sprites
wouldn't be drawn - although it ought to be that the other sprites still
get attempted to be drawn. So I've updated the bounds checks
accordingly, and now an out of bounds top-left sprite won't prevent the
drawing of the rest of the sprites.

Similarly, if the sprite of a Gravitron square was out of bounds, that
would prevent its indicators from being drawn. But the indicators
weren't being bounds-checked either (2.3 lets you have less than 1200
tiles in a given tilesheet). So the bounds check has been moved to only
cover the drawframe and the indicator indexes accordingly, and an out of
bounds sprite won't prevent attempting to draw the indicators.
This commit is contained in:
Misa 2021-03-24 12:32:43 -07:00 committed by Ethan Lee
parent 4e52dccdae
commit ccdb0c9148
1 changed files with 36 additions and 21 deletions
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57
desktop_version/src/Graphics.cpp
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@ -1895,10 +1895,6 @@ void Graphics::drawentity(const int i, const int yoff)
// Note: This code is in the 4-tile code
break;
case 9: // Really Big Sprite! (2x2)
if (!INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
return;
}
setcolreal(obj.entities[i].realcol);
tpoint.x = xp;
@ -1907,7 +1903,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
}
tpoint.x = xp+32;
tpoint.y = yp - yoff;
@ -1915,7 +1914,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+1],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe+1, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+1],NULL, backBuffer, &drawRect, ct);
}
tpoint.x = xp;
tpoint.y = yp+32 - yoff;
@ -1923,7 +1925,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+12],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe+12, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+12],NULL, backBuffer, &drawRect, ct);
}
tpoint.x = xp+32;
tpoint.y = yp+32 - yoff;
@ -1931,13 +1936,12 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe + 13],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe+13, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe + 13],NULL, backBuffer, &drawRect, ct);
}
break;
case 10: // 2x1 Sprite
if (!INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
return;
}
setcolreal(obj.entities[i].realcol);
tpoint.x = xp;
@ -1946,7 +1950,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
}
tpoint.x = xp+32;
tpoint.y = yp - yoff;
@ -1954,17 +1961,16 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+1],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe+1, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe+1],NULL, backBuffer, &drawRect, ct);
}
break;
case 11: //The fucking elephant
setcolreal(obj.entities[i].realcol);
drawimagecol(3, xp, yp - yoff);
break;
case 12: // Regular sprites that don't wrap
if (!INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
return;
}
tpoint.x = xp;
tpoint.y = yp - yoff;
setcolreal(obj.entities[i].realcol);
@ -1972,7 +1978,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = sprites_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(obj.entities[i].drawframe, spritesvec))
{
BlitSurfaceColoured(spritesvec[obj.entities[i].drawframe],NULL, backBuffer, &drawRect, ct);
}
//if we're outside the screen, we need to draw indicators
@ -1994,7 +2003,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = tiles_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(tiles[1167],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(1167, tiles))
{
BlitSurfaceColoured(tiles[1167],NULL, backBuffer, &drawRect, ct);
}
}
else if (obj.entities[i].xp > 340 && obj.entities[i].vx < 0)
@ -2014,7 +2026,10 @@ void Graphics::drawentity(const int i, const int yoff)
drawRect = tiles_rect;
drawRect.x += tpoint.x;
drawRect.y += tpoint.y;
BlitSurfaceColoured(tiles[1166],NULL, backBuffer, &drawRect, ct);
if (INBOUNDS_VEC(1166, tiles))
{
BlitSurfaceColoured(tiles[1166],NULL, backBuffer, &drawRect, ct);
}
}
break;
case 13: