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zhenyan121
5980400e2e
Add movement constants for pigs and switch deceleration to per-axis friction so creatures stop naturally. Extend wander boost duration for smoother behavior.
41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
#include "Cubed/gameplay/systems/speed_system.hpp"
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#include "Cubed/gameplay/ecs/ai_struct.hpp"
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#include "Cubed/gameplay/ecs/server_entity.hpp"
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namespace Cubed {
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void SpeedSystem::update(float dt, entt::registry& registry) {
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auto view = registry.view<BaseServerCreature, MoveBoost>();
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for (auto e : view) {
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auto [creature, moveboost] = view.get<BaseServerCreature, MoveBoost>(e);
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auto& v = creature.velocity.value;
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if (moveboost.count <= moveboost.duration) {
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++moveboost.count;
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v += creature.direction.value * creature.movement.acceleration;
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} else {
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// Decelerated by friction in all directions
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auto decay = [](float& c, float d) {
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if (c > 0.0f)
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c = std::max(0.0f, c - d);
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else if (c < 0.0f)
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c = std::min(0.0f, c + d);
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};
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decay(v.x, creature.movement.deceleration);
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decay(v.z, creature.movement.deceleration);
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}
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v.y += -creature.gravity.value * dt;
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auto v_clamp = [](float& c, float max) {
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if (max < 0.0f) {
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return; //-1 = unlimited
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}
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c = std::clamp(c, -max, max);
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};
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v_clamp(v.x, creature.velocity.max.x);
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v_clamp(v.y, creature.velocity.max.y);
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v_clamp(v.z, creature.velocity.max.z);
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}
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}
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} // namespace Cubed
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