trotFunky/Toy-Raytracer
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base: trotFunky:e234dda860068e3d10a5da6ade1d9ec23cdbd41c
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trotFunky:main
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compare: trotFunky:940c1d706bc5330eead7116d5e006b994f92b707
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trotFunky:main

4 commits
e234dda860 ... 940c1d706b

Author SHA1 Message Date
Teo-CD
940c1d706b main/debug: Make the frame timing graph a sliding window 
Use memmove to shift the whole array by one measure to the left,
dropping the oldest one and adding a new one at the head.
This creates a better visual effect of a graph being produced on the right
and scrolling to the left, rather than a looping writing head that overwrites
previous data.
 2024-01-29 00:21:14 +00:00
Teo-CD
41437cd259 Clean-up: Change indentation to tabs 2024-01-28 22:08:35 +00:00
Teo-CD
66ec111f5d World/Debug: Properly check the MapEdit status 
If a Dear ImGui window is collapsed or closed, ImGui::Begin returns false.
Check it properly to bypass rendering if is indeed not needed.
 2024-01-28 22:05:20 +00:00
Teo-CD
43970df494 World: Move the scale factor to a constant 
Clear up the computation and split the result from the ray cast to the scale
factor.

Update the castRay explanations to add the issue of unmatched axes.
 2024-01-28 21:58:36 +00:00
6 changed files with 374 additions and 363 deletions
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16
World.cpp
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@ -107,6 +107,9 @@ float World::castRay(float originX, float originY, float orientation) const
* the grid for the other one
* - Depending on the orientation, signs must be taken into account
* to work 360°
* - Those formulas consider regular axes (x→,y↑), however the world is
* built around left-handed axes (x→,y↓), so the rendered world is
* mirrored. This also explains some weird signs for rotations.
*/
/* Offsets to get back on the grid from the ray's origin. */
float hOffsetX;
@ -148,7 +151,7 @@ float World::castRay(float originX, float originY, float orientation) const
if (orientation < 180) {
vOffsetX = ceilf(originX);
vOffsetY = ceilf(originX) - originX;
vDir = +1;
vDir = 1;
vRound = 0;
} else {
vOffsetX = floorf(originX);
@ -239,6 +242,8 @@ void World::render(sf::RenderWindow& window) const
window.draw(ground);
window.draw(ceiling);
const float worldToCamera = (player.focalLength*2)/player.sensorSize;
/*
* Throw rays and draw walls over the ceiling and ground.
* Only throws in the plane, which doesn't work for levels/3D.
@ -252,7 +257,7 @@ void World::render(sf::RenderWindow& window) const
} else if (rayAngle > 360) {
rayAngle -= 360;
}
float obstacleScale = player.focalLength*2/(castRay(player.x, player.y, rayAngle)*player.sensorSize);
float obstacleScale = worldToCamera / castRay(player.x, player.y, rayAngle);
/* 2 Is wall height in meters. */
fillColumn(window, i, obstacleScale);
}
@ -269,7 +274,7 @@ void World::step(const float& stepTime) {
player.rotate(player.currentRotationSpeed*stepTime);
#ifdef IMGUI
ImGui::Begin("MapEdit");
if (ImGui::Begin("MapEdit")) {
static int blockToPlace = 1;
/*
@ -320,7 +325,8 @@ void World::step(const float& stepTime) {
ImGui::PushStyleColor(ImGuiCol_Header, blockColor);
if (ImGui::Selectable("", currentBlock != BlockType::AIR, 0, ImVec2(10, 10))) {
map[x + w*y] = currentBlock == (BlockType)blockToPlace ? BlockType::AIR : (BlockType)blockToPlace;
map[x + w * y] =
currentBlock == (BlockType) blockToPlace ? BlockType::AIR : (BlockType) blockToPlace;
}
ImGui::PopStyleColor(2);
ImGui::PopID();
@ -337,7 +343,7 @@ void World::step(const float& stepTime) {
ImGui::RadioButton("Window", &blockToPlace, (int) BlockType::WINDOW);
ImGui::Unindent();
ImGui::EndGroup();
}
ImGui::End();
#endif
}

7
main.cpp
View file

@ -115,7 +115,12 @@ int main()
ImGui::SetNextWindowBgAlpha(0.2f);
ImGui::Begin("FPS", nullptr ,window_flags);
if (fpsDataClock.getElapsedTime().asMilliseconds() > 20) {
frameTimings[frameCount%100] = static_cast<float>(deltaT.asMicroseconds());
if (frameCount >= 100) {
memmove(frameTimings, frameTimings + 1, 99 * sizeof(float));
frameTimings[99] = static_cast<float>(deltaT.asMicroseconds());
} else [[unlikely]] {
frameTimings[frameCount] = static_cast<float>(deltaT.asMicroseconds());
}
frameCount++;
fpsDataClock.restart();
}