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Implemented a dumb lighting system.

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This commit is contained in:
Zed A. Shaw 2025-01-17 12:03:49 -05:00
parent 4d31a4daf2
commit f88eca9cd9
1 changed files with 24 additions and 1 deletions
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25
raycaster.cpp
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@ -1,9 +1,32 @@
#include "raycaster.hpp"
#include "texture.hpp"
#include <algorithm>
using namespace fmt;
using std::make_unique;
union ColorConv {
struct {
uint8_t r;
uint8_t g;
uint8_t b;
uint8_t a;
} as_color;
uint32_t as_int;
};
inline uint32_t dumb_lighting(uint32_t pixel, double distance) {
if(distance < 0.9) return pixel;
ColorConv conv{.as_int=pixel};
conv.as_color.r /= distance;
conv.as_color.g /= distance;
conv.as_color.b /= distance;
return conv.as_int;
}
Raycaster::Raycaster(sf::RenderWindow& window, Matrix &map, int width, int height) :
$width(width), $height(height),
$window(window),
@ -226,7 +249,7 @@ void Raycaster::cast_rays() {
int texY = (int)texPos & (textures.TEXTURE_HEIGHT - 1);
texPos += step;
RGBA pixel = texture[textures.TEXTURE_HEIGHT * texY + texX];
pixels[pixcoord(x, y)] = pixel;
pixels[pixcoord(x, y)] = dumb_lighting(pixel, perpWallDist);
}
// SET THE ZBUFFER FOR THE SPRITE CASTING