breaking scene loading for new branch

data/test_scene.json

@@ -0,0 +1,58 @@
+{
+	"camera" : {
+		"position" : {
+			"x" : 0,
+			"y" : 0,
+			"z" : 0
+		},
+
+		"rotation" : {
+			"x" : 0,
+			"y" : 0,
+			"z" : 0,
+			"w" : 0
+		}
+	},
+
+	"hex_grid" : {
+		"layout_type" : "hexagon",
+		"hex_size" : 10,
+		"hex_radius" : 20
+	},
+
+	"entities" : [
+		{
+			"name" : "catepillar 1",
+			"model_file" : "catepillar.dae",
+			"position" : {
+				"x" : 0,
+				"y" : 0,
+				"z" : 0
+			},
+
+			"rotation" : {
+				"x" : 0,
+				"y" : 0,
+				"z" : 0,
+				"w" : 0
+			}
+		}
+	],
+
+	"lights" : [
+		{
+			"intensity" : 1.0,
+			"color" : {
+				"r" : 0,
+				"g" : 0,
+				"b" : 0
+			},
+
+			"position" : {
+				"x" : 0,
+				"y" : 0,
+				"z" : 0
+			}
+		}
+	]
+}

src/hexgame.cpp

@@ -36,6 +36,9 @@
 #define CONE_ANGLE 30
 #define VSYNC_ENABLED true
 
+//testing
+#define DEFAULT_SCENE_FILE "../data/test_scene.json"
+
 
 #include <vector>
 
@@ -62,6 +65,7 @@
 #include "mesh.h"
 #include "platform_wait_for_vblank.h"
 #include "renderer.h"
+#include "scene_loader.h"
 #include "util.h"
 
 using std::vector;
@@ -482,7 +486,7 @@ cleanUp(SDL_Handles &handles)
 
 #if defined(_WIN32)
 int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
-					 LPSTR lpCmdLine, int nShowCmd)
+				LPSTR lpCmdLine, int nShowCmd)
 #else
 int main(int argc, char* argv[])
 #endif
@@ -550,6 +554,7 @@ int main(int argc, char* argv[])
 		game_state* g = g_game_state;
 		g->entities = (Entity*) std::calloc(1000, sizeof(Entity));
 
+#if 0
 		meMeshGroup mg1, mg2;
 
 		// TODO: store these meMeshGroups serperately from entities to re-use them,
@@ -577,12 +582,22 @@ int main(int argc, char* argv[])
 			LOG(ERROR) << "Error loading file, exiting\n";
 			return 1;
 		}
-
+#endif
 	} else {
 		LOG(ERROR) << "Error initializing assimp\n";
 		return 1;
 	}
 
+
+	// testing scene_loader
+
+	if (slLoadFile(DEFAULT_SCENE_FILE, g_game_state->entities, g_game_state->entity_count, 1000)) {
+		// ???
+	} else {
+		LOG(ERROR) << "Error reading scene file, exiting\n";
+		return 1;
+	}
+
 	if (!createScene(g_game_state->hex_array, g_game_state->entities, g_game_state->entity_count)) {
 		LOG(ERROR) << "Error in vertex data, exiting\n";
 		return 1;

src/renderer.cpp

@@ -71,6 +71,7 @@ struct camera
 void initMatrices(projection_type p);
 void openglDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity,
 					GLsizei length, const GLchar* message, const void* userParam);
+// TODO: move hex logic to new file
 bool initHexGridBuffers(std::vector<hex_info>* hexes);
 void fillTriangleBufferFromHex(GLfloat buf[], int idx,  const hex_info &hex);
 void fillColorBuffer(GLfloat buf[], int len, std::vector<hex_info>* hexes);
@@ -484,6 +485,7 @@ openglDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity,
 		<< ", message: " << message << "\n";
 }
 
+// TODO: move hex logic to new file
 bool
 initHexGridBuffers(std::vector<hex_info>* hexes)
 {

src/scene_loader.cpp

@@ -0,0 +1,52 @@
+
+#include <glm/glm.hpp>
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/stringbuffer.h"
+
+#include "aixlog.hpp"
+
+#include "entity.h"
+#include "mesh.h"
+#include "util.h"
+#include "scene_loader.h"
+
+bool
+slLoadFile(const char* file_name, Entity* entity_array, uint& entity_count, uint max_entities)
+{
+	if (entity_array == nullptr) {
+		LOG(ERROR) << "entity array not initialized\n";
+		return false;
+	}
+
+	rapidjson::Document doc;
+	char* contents = utilDumpTextFile(file_name);
+
+	if (contents == nullptr) {
+		LOG(ERROR) << "Error reading file: " << file_name << "\n";
+		return false;
+	}
+
+	if (doc.Parse(contents).HasParseError() || !doc.IsObject()) {
+		LOG(ERROR) << "Error parrsing scene file: " << file_name << "\n";
+		return false;
+	}
+
+	// entities
+
+	if (doc.HasMember("entities")) {
+		const rapidjson::Value& e = doc["entities"];
+		assert (e.IsArray());
+
+		for (uint i = 0; i < e.Size(); i++) {
+			assert(e[i].HasMember("name"));
+			assert(e[i]["name"].IsString());
+			assert(i < max_entities);
+
+			std::string s = e[i]["name"].GetString();
+			LOG(INFO) << "e[" << i << "][\"name\"]: " << s << "\n";
+		}
+	}
+
+	return true;
+}

src/scene_loader.h

@@ -0,0 +1,7 @@
+
+#include "util.h"
+
+/*
+ * @param max_entities maximum size of array allocated
+ */
+bool slLoadFile(const char* file_name, Entity* entity_array, uint& entity_count, uint max_entities);