Working on the web assembly openglES issue

6 files changed, 54 insertions, 17 deletions

diff --git a/src/entity.c b/src/entity.c
index a44220a..f36c941 100644
--- a/src/entity.c
+++ b/src/entity.c
@@ -368,14 +368,7 @@ RayCollision traceRayToEntityRadius(Entity entity, Ray ray, float scale) {
 
 // Basic wireframe drawing.
 void entityDraw(Entity * entity) {
-	entity->model->transform = QuaternionToMatrix(entity->rotation);
-
-	DrawModelWires(
-		*entity->model,
-		entity->position,
-		1.0,
-		GREEN
-	);
+	drawModelWireframe(*entity->model, entity->position, entity->rotation, GREEN);
 }
 
 void entityUpdatePosition(Entity * entity) {
diff --git a/src/gameCommon.h b/src/gameCommon.h
index 2c655e3..fb0dfb4 100644
--- a/src/gameCommon.h
+++ b/src/gameCommon.h
@@ -14,6 +14,12 @@
 #include <rlgl.h>
 #include "raygui.h"
 
+//#define PLATFORM_WEB
+
+#if defined(PLATFORM_WEB)
+    #include <emscripten/emscripten.h>
+#endif
+
 #ifndef GAME_COMMON_H
 #define GAME_COMMON_H
 
@@ -33,6 +39,7 @@ typedef struct Entity Entity;
 #define KF_CALLOC(nmemb, size) calloc(nmemb, size)
 #define KF_REALLOC(ptr, size) realloc(ptr, size)
 #define KF_REALLOCARRAY(ptr, nmemb, size) reallocarray(ptr, nmemb, size)
+//#define KF_REALLOCARRAY(ptr, nmemb, size) realloc(ptr, nmemb * size)
 #define KF_FREE(ptr) free(ptr)
 
 #define ALLOCATION_ERROR TraceLog(LOG_ERROR, "Allocation error in %s:%d", __FILE__, __LINE__)
diff --git a/src/main.c b/src/main.c
index d827561..6243100 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,12 +1,6 @@
 #include "gameCommon.h"
 #include "game.h"
 
-//#define PLATFORM_WEB
-
-#if defined(PLATFORM_WEB)
-    #include <emscripten/emscripten.h>
-#endif
-
 Game game;
 
 void updateFrame() {
@@ -16,7 +10,7 @@ void updateFrame() {
 int main(int argc, char ** argv) {
 	initGame(&game);
 
-#if defined(PLATFORM_WEB)
+#ifdef PLATFORM_WEB
     emscripten_set_main_loop(updateFrame, 0, 1);
 #else
     while (!WindowShouldClose()) {
diff --git a/src/screens/infoScreen.c b/src/screens/infoScreen.c
index 9e7f8d5..73079de 100644
--- a/src/screens/infoScreen.c
+++ b/src/screens/infoScreen.c
@@ -242,8 +242,7 @@ void updateInfoScreen(Game * game) {
     // Draw shit.
     BeginMode3D(infoScreen->camera);
 
-    game->assets.models[info.assetId].transform = QuaternionToMatrix(infoScreen->rotations[currentEntity]);
-    DrawModelWires(game->assets.models[info.assetId], Vector3Zero(), 1.0, GREEN);
+    drawModelWireframe(game->assets.models[info.assetId], Vector3Zero(), infoScreen->rotations[currentEntity], GREEN);
 
     EndMode3D();
 }
diff --git a/src/util.c b/src/util.c
index 8165e11..692ae4b 100644
--- a/src/util.c
+++ b/src/util.c
@@ -81,3 +81,45 @@ void copyTriangle3D(Triangle3D a, const Triangle3D b) {
 	a[1] = b[1];
 	a[2] = b[2];
 }
+
+Vector3 getVertexAt(Mesh mesh, int vertexNum) {
+    return (Vector3){
+        mesh.vertices[vertexNum * 3],
+        mesh.vertices[vertexNum * 3 + 1],
+        mesh.vertices[vertexNum * 3 + 2]
+    };
+}
+
+void drawModelWireframe(Model model, Vector3 position, Quaternion rotation, Color color) {
+    // DrawModelWires doesn't work on the version of opengl that web assembly uses.
+    // Instead I use this stupid peice of shit.
+
+#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33)
+    model.transform = QuaternionToMatrix(rotation);
+    DrawModelWires(model, position, 1.0, color);
+#else
+    for (int i = 0; i < model.meshCount; ++i) {
+        Mesh mesh = model.meshes[i];
+
+        // Loop through the triangles.
+        for (int triangleNum = 0; triangleNum < mesh.triangleCount; ++triangleNum) {
+            Triangle3D triangle = {
+                getVertexAt(mesh, triangleNum * 3),
+                getVertexAt(mesh, triangleNum * 3 + 1),
+                getVertexAt(mesh, triangleNum * 3 + 2)
+            };
+
+            // Rotation and transform.
+            for (int vertexNum = 0; vertexNum < 3; ++vertexNum) {
+                triangle[vertexNum] = Vector3RotateByQuaternion(triangle[vertexNum], rotation);
+                triangle[vertexNum] = Vector3Add(triangle[vertexNum], position);
+            }
+
+            // Draw.
+            DrawLine3D(triangle[0], triangle[1], color);
+            DrawLine3D(triangle[1], triangle[2], color);
+            DrawLine3D(triangle[2], triangle[0], color);
+        }
+    }
+#endif
+}
diff --git a/src/util.h b/src/util.h
index e764393..baa7f96 100644
--- a/src/util.h
+++ b/src/util.h
@@ -29,4 +29,6 @@ bool checkTriangleCollision3D(const Triangle3D triangleA, const Triangle3D trian
 
 void copyTriangle3D(Triangle3D a, const Triangle3D b);
 
+void drawModelWireframe(Model model, Vector3 position, Quaternion rotation, Color color);
+
 #endif