Added splashpack parser, made renderer a singleton

src/splashpack.cpp

@@ -0,0 +1,33 @@
+#include "splashpack.hh"
+#include "gameobject.hh"
+#include "mesh.hh"
+#include "renderer.hh"
+#include <cassert>
+#include <cstdint>
+#include <cstring>
+
+eastl::vector<psxsplash::GameObject*> LoadSplashpack(uint8_t *data) {
+    assert(data != nullptr);
+    psxsplash::SPLASHPACKFileHeader *header =
+        reinterpret_cast<psxsplash::SPLASHPACKFileHeader *>(data);
+    assert(memcmp(header->magic, "SP", 10) == 0);
+
+    eastl::vector<psxsplash::GameObject*> gameObjects;
+    gameObjects.reserve(header->gameObjectCount);
+
+    uint8_t* curentPointer = data += sizeof(psxsplash::SPLASHPACKFileHeader);
+
+    for(uint16_t i = 0; i < header->gameObjectCount; i++) {
+        psxsplash::GameObject* go = reinterpret_cast<psxsplash::GameObject*>(curentPointer);
+        go->polygons = reinterpret_cast<psxsplash::Tri*>(data += go->polygonsOffset);
+        gameObjects.push_back(go);
+        curentPointer += sizeof(psxsplash::GameObject);
+    }
+
+    for(uint16_t i = 0; i < header->textureAtlasCount; i++) {
+        psxsplash::SPLASHPACKTextureAtlas* atlas = reinterpret_cast<psxsplash::SPLASHPACKTextureAtlas *>(curentPointer);
+        psxsplash::Renderer::getInstance().vramUpload((uint16_t*) (data += atlas->polygonsOffset), atlas->x, atlas->y, atlas->width, atlas->height);
+    }
+
+    return gameObjects;
+}