trotFunky/Toy-Raytracer
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World: Introduce a struct for raycast results

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In order to implement more complexe behaviors, more information than the distance
is needed from a raycast.
Add a new struct to store and return this information, currently hit position
and hit type, and update castRay to return that instead.
This commit is contained in:
trotFunky 2024-02-05 00:33:01 +00:00
parent b0c9d24787
commit 8199fd3449
2 changed files with 27 additions and 5 deletions
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20
World.cpp
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@ -99,7 +99,7 @@ std::ostream& operator<<(std::ostream& ostream, World const& world)
return(ostream);
}
float World::castRay(float originX, float originY, float orientation) const
RaycastResult World::castRay(float originX, float originY, float orientation) const
{
/*
* Reference used for ray intersection computations :
@ -214,7 +214,21 @@ float World::castRay(float originX, float originY, float orientation) const
float vDist = sqrtf((originX - vCheckX)*(originX - vCheckX) +
(originY - vCheckY)*(originY - vCheckY));
return hDist > vDist ? vDist : hDist;
RaycastResult result{};
if (hDist > vDist) {
result.distance = vDist;
result.hitX = vCheckX;
result.hitY = vCheckY;
} else {
result.distance = hDist;
result.hitX = hCheckX;
result.hitY = hCheckY;
}
result.hitBlock = getBlock(floorf(result.hitX) + vRound,
floorf(result.hitY));
return result;
}
void World::fillColumn(sf::RenderWindow& window, unsigned int column,
@ -268,7 +282,7 @@ void World::render(sf::RenderWindow& window)
rayAngle -= 360;
}
float obstacleScale = worldToCamera / (
castRay(player.x, player.y, rayAngle) *
castRay(player.x, player.y, rayAngle).distance *
cosf(deltaAngle*deg_to_rad)
);
/* 2 Is wall height in meters. */