Fix sign-compare compiler warnings in mg_ore.cpp

diff --git a/src/mg_ore.cpp b/src/mg_ore.cpp
index 12934c3ff39ac7429b04a1e33a44a922bd0e2c08..a94d1d6d9d77abbcb4ee81dd42bf5df04ce157cb 100644 (file)
--- a/src/mg_ore.cpp
+++ b/src/mg_ore.cpp
@@ -135,7 +135,7 @@ void OreScatter::generate(MMVManip *vm, int mapseed, u32 blockseed,
        u32 orechance = (csize * csize * csize) / clust_num_ores;
        u32 nclusters = volume / clust_scarcity;
 
-       for (int i = 0; i != nclusters; i++) {
+       for (u32 i = 0; i != nclusters; i++) {
                int x0 = pr.range(nmin.X, nmax.X - csize + 1);
                int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
                int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
@@ -250,9 +250,9 @@ void OreBlob::generate(MMVManip *vm, int mapseed, u32 blockseed,
                noise->seed = blockseed + i;
 
                size_t index = 0;
-               for (int z1 = 0; z1 != csize; z1++)
-               for (int y1 = 0; y1 != csize; y1++)
-               for (int x1 = 0; x1 != csize; x1++, index++) {
+               for (u32 z1 = 0; z1 != csize; z1++)
+               for (u32 y1 = 0; y1 != csize; y1++)
+               for (u32 x1 = 0; x1 != csize; x1++, index++) {
                        u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
                        if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
                                continue;