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Bring Amit's latest fix in and protect against the sprites rendering the texY value wrong sometimes.

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Zed A. Shaw 2025-01-18 13:19:14 -05:00
parent 379ec5846f
commit 6592e22075
2 changed files with 33 additions and 45 deletions
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13
amt/raycaster.cpp
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@ -7,9 +7,10 @@
using namespace fmt;
static constexpr auto room_brightness = 0.3f; // increse this to increase the room brightness. Higher value means brighter room.
#ifdef AMT_LIGHT
static constexpr auto room_brightness = 0.3f; // increse this to increase the room brightness. Higher value means brighter room.
inline static constexpr amt::RGBA dumb_lighting(amt::RGBA pixel, double distance, double distance_from_center) {
auto const dim_pixel = pixel * room_brightness;
if (distance_from_center >= 0) {
@ -145,6 +146,7 @@ void Raycaster::sprite_casting() {
int texY = ((d * textureHeight) / spriteHeight) / 256;
//get current color from the texture
// BUG: this crashes sometimes when the math goes out of bounds
if(texY < 0 || texY >= (int)sprite_texture.rows()) continue;
auto color = sprite_texture[texY][texX];
// poor person's transparency, get current color from the texture
pixels[y][stripe] = (color.to_hex() & 0xffffff00) ? color: pixels[y][stripe];
@ -323,11 +325,20 @@ void Raycaster::draw_ceiling_floor() {
// this uses the previous ty/tx fractional parts of
// floorX cellX to find the texture x/y. How?
#ifdef AMT_LIGHT
// FLOOR
pixels[y][x] = textures.floor[ty][tx] * room_brightness;
// CEILING
pixels[$height - y - 1][x] = textures.ceiling[ty][tx] * room_brightness;
#else
// FLOOR
pixels[y][x] = textures.floor[ty][tx];
// CEILING
pixels[$height - y - 1][x] = textures.ceiling[ty][tx];
#endif
}
}