William Moberg
59 lines
2.5 KiB
C++
59 lines
2.5 KiB
C++
#ifndef Collision_h__
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#define Collision_h__
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//NOTE: Collision.h needs to be #included before <GLFW/glfw3.h>,
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//because Collision #includes "RawModel.h", which has "Texture.h", which has "OpenGL.h" which must be #included first
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//or you will get "fatal error C1189: #error: gl.h included before glew.h"
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#include <vector>
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#include "Core/Ray.h"
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#include "Core/AABB.h"
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#include "Engine/Rendering/RawModel.h"
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#include "Core/Entity.h"
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class World;
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struct ComponentWrapper;
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namespace Collision
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{
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//Return true if the ray hits the box.
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bool RayAABBIntr(const Ray& ray, const AABB& box);
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bool RayVsAABB(const Ray& ray, const AABB& box);
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//Return true if the ray hits the box, also outputs distance from ray origin to intersection point in [outDistance].
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bool RayVsAABB(const Ray& ray, const AABB& box, float& outDistance);
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//Return true if the ray hits any of the triangles in the model. Stops checking when a hit is detected.
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bool RayVsModel(const Ray& ray,
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const std::vector<RawModel::Vertex>& modelVertices,
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const std::vector<unsigned int>& modelIndices);
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//Return true if the ray hits any of the triangles in the model.
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//Also returns the position of the intersection point. Will loop through all the whole model indices.
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bool RayVsModel(const Ray& ray,
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const std::vector<RawModel::Vertex>& modelVertices,
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const std::vector<unsigned int>& modelIndices,
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glm::vec3& outHitPosition);
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//Return true if the ray hits any of the triangles in the model.
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//Also returns the distance from the ray origin to the closest
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//intersection point, and the barycentric u,v-coordinates. Will loop through all the whole model indices.
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bool RayVsModel(const Ray& ray,
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const std::vector<RawModel::Vertex>& modelVertices,
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const std::vector<unsigned int>& modelIndices,
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float& outDistance,
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float& outUCoord,
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float& outVCoord);
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//Return true if the boxes are intersecting.
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bool AABBVsAABB(const AABB& a, const AABB& b);
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//Return true if the boxes are intersecting.
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//Also outputs the minimum translation that box [a] would need in order to resolve collision.
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bool AABBVsAABB(const AABB& a, const AABB& b, glm::vec3& minimumTranslation);
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bool IsSameBoxProbably(const AABB& first, const AABB& second, const float epsilon = 0.0001f);
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//Returns true if the entity has a boundingbox. Outputs the aabb in [outBox].
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bool GetEntityBox(World* world, EntityID entity, AABB& outBox, bool forceBoxFromModel = false);
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bool GetEntityBox(World* world, ComponentWrapper& AABBComponent, AABB& outBox);
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}
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#endif |