1 files changed, 56 insertions, 0 deletions
diff --git a/src/world.c b/src/world.c
new file mode 100644
index 0000000..0a6b544
--- /dev/null
+++ b/src/world.c
@@ -0,0 +1,56 @@
+#include "world.h"
+#include "game.h"
+
+World createWorld(const Assets* assets)
+{
+  World world;
+  world.size = (Vector3){1000.0, 30.0, 1000.0};
+  world.image = &assets->images[HEIGHT_MAP_IMAGE];
+  
+  Mesh mesh = GenMeshHeightmap(*world.image, world.size);
+  world.heightmap = LoadModelFromMesh(mesh);
+  world.heightmap.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture =
+    assets->textures[HEIGHT_MAP_TEXTURE];
+
+  world.heightmapColors = LoadImageColors(assets->images[HEIGHT_MAP_IMAGE]);
+
+  return world;
+}
+
+void updateWorld(World* world, Game* game)
+{
+  DrawModel(world->heightmap, Vector3Zero(), 1.0, WHITE);
+}
+
+void freeWorld(World world)
+{
+  UnloadModel(world.heightmap);
+  UnloadImageColors(world.heightmapColors);
+}
+
+float getWorldPixelHeight(World world, int x, int y)
+{
+  int verticeStart = (y * (world.image->width - 1) + x) * 18;
+  float height = 0.0;
+  int count = 0;
+
+  for (int index = 1; index < 18; index += 3)
+  {
+    height += world.heightmap.meshes[0].vertices[verticeStart + index];
+    ++count;
+  }
+
+  return (float)height / count;
+}
+
+float getWorldHeightAtLocation(World world, int x, int y)
+{
+  float toMapX = (float)world.image->width / world.size.x;
+  float toMapY = (float)world.image->height / world.size.z;
+  int pixelX = roundf((float)x * toMapX);
+  int pixelY = roundf((float)y * toMapY);
+
+  return getWorldPixelHeight(world, pixelX, pixelY);
+}
+
+// Abortions are good. Get more abortions.