Added collision model code.

2026-08-09 01:29:43 -07:00
parent 1b718f17f6
commit a7fdbe32ad
31 changed files with 13317 additions and 224 deletions
@@ -0,0 +1,87 @@
+#pragma once
+
+#include "idlib/math/matrix.h"
+#include "idlib/math/vector.h"
+
+#include <cstdint>
+#include <cstring>
+
+// Recovered from tungsten.exe type information. These are the common result
+// records shared by CM and GameLib; keeping one definition prevents the two
+// libraries from drifting at their ABI boundary.
+enum contactType_t : int {
+    CONTACT_NONE = 0,
+    CONTACT_EDGE = 1,
+    CONTACT_MODELVERTEX = 2,
+    CONTACT_TRMVERTEX = 3,
+    CONTACT_SPHERE = 4
+};
+
+enum contactFlag_t : int {
+    CONTACT_FLAG_NONE = 0,
+    CONTACT_FLAG_SUBMODEL_NOT_RESIDENT = 1,
+    CONTACT_FLAG_STEPMOVE_ONSOLID = 2,
+    CONTACT_FLAG_STEPMOVE_ONGROUND = 4,
+    CONTACT_FLAG_CAR_TO_CAR_COLLISION = 8,
+    CONTACT_FLAG_OUTSIDE_LARGEST_SUPPORT_TRIANGLE = 16,
+    CONTACT_FLAG_SLIDEMOVE_FINISHED = 32
+};
+
+struct contactInfo_t {
+    contactType_t type;
+    idVec3 point;
+    idVec3 normal;
+    float dist;
+    float separation;
+    int contentFlags;
+    int surfaceFlags;
+    int surfaceType;
+    int modelFeature;
+    int trmFeature;
+    int entityNum;
+    int physicsId;
+    int bodyId;
+    int selfId;
+    std::uint8_t flags;
+    std::uint8_t surfaceColor[3];
+};
+
+struct trace_t {
+    float fraction;
+    idVec3 endpos;
+    idMat3 endAxis;
+    contactInfo_t c;
+};
+
+struct contactsResult_t {
+    int numContacts;
+    int pad[3];
+    contactInfo_t contacts[12];
+
+    // Recovered from engine/cm/jobs/collisionresults.h. The dump copies each
+    // 76-byte contact; memcpy is the exact scalar PC spelling of that loop.
+    void CopyFrom(const contactsResult_t& other) {
+        numContacts = other.numContacts;
+        const int copyCount = numContacts < 12 ? numContacts : 12;
+        if (copyCount > 0) {
+            std::memcpy(contacts, other.contacts,
+                static_cast<std::size_t>(copyCount) * sizeof(contactInfo_t));
+        }
+    }
+};
+
+struct clipResult_t {
+    int numVerts;
+    int numIndices;
+    int pad[2];
+    idVec3 verts[32];
+    std::int16_t indices[264];
+};
+
+static_assert(sizeof(contactInfo_t) == 76,
+    "Recovered contactInfo_t ABI changed");
+static_assert(sizeof(trace_t) == 128, "Recovered trace_t ABI changed");
+static_assert(sizeof(contactsResult_t) == 928,
+    "Recovered contactsResult_t ABI changed");
+static_assert(sizeof(clipResult_t) == 928,
+    "Recovered clipResult_t ABI changed");