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Fix swimming controls and enforce swim collision sweeps

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This commit is contained in:
Kelsi 2026-02-03 19:56:25 -08:00
parent 8bc50818a9
commit 1951dbd9e6
1 changed files with 61 additions and 6 deletions
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67
src/rendering/camera_controller.cpp
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@ -157,8 +157,8 @@ void CameraController::update(float deltaTime) {
if (nowForward) movement += forward;
if (nowBackward) movement -= forward;
if (nowStrafeLeft) movement -= right;
if (nowStrafeRight) movement += right;
if (nowStrafeLeft) movement += right;
if (nowStrafeRight) movement -= right;
// Stand up if jumping while crouched
if (!uiWantsKeyboard && sitting && input.isKeyPressed(SDL_SCANCODE_SPACE)) {
@ -186,12 +186,31 @@ void CameraController::update(float deltaTime) {
if (inWater) {
swimming = true;
// Reduce horizontal speed while swimming
// Swim movement follows look pitch (forward/back), while strafe stays
// lateral for stable control.
float swimSpeed = speed * SWIM_SPEED_FACTOR;
if (glm::length(movement) > 0.001f) {
movement = glm::normalize(movement);
targetPos += movement * swimSpeed * deltaTime;
glm::vec3 swimForward = glm::normalize(forward3D);
if (glm::length(swimForward) < 1e-4f) {
swimForward = forward;
}
glm::vec3 swimRight = camera->getRight();
swimRight.z = 0.0f;
if (glm::length(swimRight) > 1e-4f) {
swimRight = glm::normalize(swimRight);
} else {
swimRight = right;
}
glm::vec3 swimMove(0.0f);
if (nowForward) swimMove += swimForward;
if (nowBackward) swimMove -= swimForward;
if (nowStrafeLeft) swimMove -= swimRight;
if (nowStrafeRight) swimMove += swimRight;
if (glm::length(swimMove) > 0.001f) {
swimMove = glm::normalize(swimMove);
targetPos += swimMove * swimSpeed * deltaTime;
}
// Spacebar = swim up (continuous, not a jump)
@ -234,6 +253,42 @@ void CameraController::update(float deltaTime) {
}
}
// Enforce collision while swimming too (horizontal only), so we don't
// pass through walls/props when underwater or at waterline.
{
glm::vec3 swimFrom = *followTarget;
glm::vec3 swimTo = targetPos;
float swimMoveDist = glm::length(swimTo - swimFrom);
int swimSteps = std::max(1, std::min(12, static_cast<int>(std::ceil(swimMoveDist / 0.22f))));
glm::vec3 stepPos = swimFrom;
glm::vec3 stepDelta = (swimTo - swimFrom) / static_cast<float>(swimSteps);
for (int i = 0; i < swimSteps; i++) {
glm::vec3 candidate = stepPos + stepDelta;
if (wmoRenderer) {
glm::vec3 adjusted;
if (wmoRenderer->checkWallCollision(stepPos, candidate, adjusted)) {
candidate.x = adjusted.x;
candidate.y = adjusted.y;
}
}
if (m2Renderer) {
glm::vec3 adjusted;
if (m2Renderer->checkCollision(stepPos, candidate, adjusted)) {
candidate.x = adjusted.x;
candidate.y = adjusted.y;
}
}
stepPos = candidate;
}
targetPos.x = stepPos.x;
targetPos.y = stepPos.y;
}
grounded = false;
} else {
swimming = false;