Decouple mesh from object code so we don't have to reload models constantly.

Faceball2030/main.cpp

@@ -30,7 +30,7 @@ struct vec3d
 	float w = 1;
 };
 
-struct triangle
+struct Triangle
 {
 	vec3d p[3];
 	vec2d uv[3];
@@ -45,12 +45,19 @@ struct MapSquare {
 	Decal* wallW=NULL;
 };
 
-struct mesh
+struct Mesh
 {
-	std::vector<triangle> tris;
-	Decal* texture;
-	float rot=0;
+	std::vector<Triangle> tris;
+	Decal* texture=NULL;
 
+	Mesh() {}
+
+	Mesh(std::string filename,Decal*tex)
+	:texture(tex){
+		LoadFromObjectFile(filename);
+	}
+
+	private:
 	void Parse(std::string str, int& v, int& uv) {
 		std::cout << str << "\n";
 		std::stringstream s(str.substr(0, str.find("/") + 1));
@@ -107,6 +114,12 @@ struct mesh
 
 };
 
+struct Object {
+	Mesh mesh;
+	vf2d pos = { 0,0 };
+	float rot = 0;
+};
+
 struct mat4x4
 {
 	float m[4][4] = { 0 };
@@ -125,7 +138,7 @@ public:
 
 
 private:
-	mesh mapMesh;
+	Mesh mapMesh;
 	mat4x4 matProj;
 
 	vec3d vCamera = { 5,0.5,5 };
@@ -324,7 +337,7 @@ private:
 	}
 
 
-	int Triangle_ClipAgainstPlane(vec3d plane_p, vec3d plane_n, triangle& in_tri, triangle& out_tri1, triangle& out_tri2)
+	int Triangle_ClipAgainstPlane(vec3d plane_p, vec3d plane_n, Triangle& in_tri, Triangle& out_tri1, Triangle& out_tri2)
 	{
 		// Make sure plane normal is indeed normal
 		plane_n = Vector_Normalise(plane_n);
@@ -477,17 +490,19 @@ private:
 		mat4x4 matCamera = Matrix_PointAt(vCamera, vTarget, vUp);
 		mat4x4 matView = Matrix_QuickInverse(matCamera);
 
-		std::vector<triangle>vecTrianglesToRaster;
+		std::vector<Triangle>vecTrianglesToRaster;
 
 		// Draw Triangles
-		for (auto& mesh : objects) {
-			for (auto& tri : mesh.tris){
-				triangle triProjected, triTransformed, triViewed;
+		for (auto& obj : objects) {
+			for (auto& tri : obj.mesh.tris){
+				Triangle triProjected, triTransformed, triViewed;
 				//mat4x4 matTrans = Matrix_MakeTranslation(-mesh.size.x/2, 0, -mesh.size.x/2);
 				mat4x4 localMat = Matrix_MakeIdentity();
 				//localMat = Matrix_MultiplyMatrix(localMat, matTrans);
-				mat4x4 rotMat = Matrix_MakeRotationY(mesh.rot);
+				mat4x4 rotMat = Matrix_MakeRotationY(obj.rot);
 				localMat = Matrix_MultiplyMatrix(localMat, rotMat);
+				mat4x4 matTrans = Matrix_MakeTranslation(obj.pos.x, 0, obj.pos.y);
+				localMat = Matrix_MultiplyMatrix(localMat, matTrans);
 
 				triTransformed.p[0] = Matrix_MultiplyVector(localMat, tri.p[0]);
 				triTransformed.p[1] = Matrix_MultiplyVector(localMat, tri.p[1]);
@@ -521,7 +536,7 @@ private:
 					triViewed.col = Pixel(triTransformed.col.r * dp * dp, triTransformed.col.g * dp * dp, triTransformed.col.b * dp * dp);
 
 					int nClippedTriangles = 0;
-					triangle clipped[2];
+					Triangle clipped[2];
 					nClippedTriangles = Triangle_ClipAgainstPlane({ 0.0f, 0.0f, 0.1f }, { 0.0f, 0.0f, 1.0f }, triViewed, clipped[0], clipped[1]);
 
 					for (int n = 0; n < nClippedTriangles; n++) {
@@ -568,7 +583,7 @@ private:
 						triProjected.p[1].y *= 0.5f * (float)ScreenHeight();
 						triProjected.p[2].x *= 0.5f * (float)ScreenWidth();
 						triProjected.p[2].y *= 0.5f * (float)ScreenHeight();
-						triProjected.tex = mesh.texture;
+						triProjected.tex = obj.mesh.texture;
 
 						vecTrianglesToRaster.push_back(triProjected);
 					}
@@ -581,8 +596,8 @@ private:
 		int triRenderCount = 0;
 		for (auto& triToRaster : vecTrianglesToRaster) {
 
-			triangle clipped[2];
-			std::list<triangle>listTriangles;
+			Triangle clipped[2];
+			std::list<Triangle>listTriangles;
 			listTriangles.push_back(triToRaster);
 			int nNewTriangles = 1;
 
@@ -592,7 +607,7 @@ private:
 				while (nNewTriangles > 0)
 				{
 					// Take triangle from front of queue
-					triangle test = listTriangles.front();
+					Triangle test = listTriangles.front();
 					listTriangles.pop_front();
 					nNewTriangles--;
 
@@ -718,7 +733,7 @@ private:
 	Decal* dot,*enemy_ShootMe_tex;
 	vi2d MAP_SIZE = { 10,10 };
 	std::vector<std::vector<MapSquare>>map;
-	std::vector<mesh>objects;
+	std::vector<Object>objects;
 
 public:
 	bool OnUserCreate() override
@@ -728,13 +743,12 @@ public:
 		dot = new Decal(new Sprite("assets/dot.png"));
 		enemy_ShootMe_tex = new Decal(new Sprite("assets/enemies/ShootMe.png"));
 
+		Mesh testEnemy("assets/enemies/ShootMe.obj", enemy_ShootMe_tex);
 		mapMesh.texture = dot;
-
-		mesh testEnemy;
-		testEnemy.LoadFromObjectFile("assets/enemies/ShootMe.obj");
-		testEnemy.texture = enemy_ShootMe_tex;
-
-		objects.push_back(testEnemy);
+		for (int i = 0; i < 75; i++) {
+			Object newEnemy({ testEnemy,{ float(rand() % 20),float(rand() % 20) }, (rand() % 1000) / 1000.f * 2 * PI });
+			objects.push_back(newEnemy);
+		}
 
 		for (int y = 0; y < MAP_SIZE.y; y++) {
 			std::vector<MapSquare>row;
@@ -830,7 +844,9 @@ public:
 
 	bool OnUserUpdate(float fElapsedTime) override
 	{
-		objects[0].rot += PI / 8 * fElapsedTime;
+		for (Object& o : objects) {
+			o.rot += PI / 8 * fElapsedTime;
+		}
 		HandleKeys(fElapsedTime);
 		RenderWorld();
 		return true;