Modify textures, add map generator necessities

mods/default/init.lua

@@ -11,6 +11,9 @@ LIGHT_MAX = 14
 -- Definitions made by this mod that other mods can use too
 default = {}
 
+-- Register and define map generator stuff
+dofile(minetest.get_modpath("default").."/mapgen.lua")
+
 --
 -- Tool definition
 --
@@ -25,7 +28,7 @@ minetest.register_item(":", {
 		max_drop_level = 0,
 		groupcaps = {
 			fleshy = {times={[2]=2.00, [3]=1.00}, maxwear=0, maxlevel=1},
-			crumbly = {times={[3]=0.70}, maxwear=0, maxlevel=1},
+			crumbly = {times={[2]=3.00, [3]=0.70}, maxwear=0, maxlevel=1},
 			snappy = {times={[3]=0.40}, maxwear=0, maxlevel=1},
 			oddly_breakable_by_hand = {times={[1]=3.50,[2]=2.00,[3]=0.70}, maxwear=0, maxlevel=3},
 		}
@@ -38,7 +41,7 @@ minetest.register_tool("default:pick_wood", {
 	tool_capabilities = {
 		max_drop_level=0,
 		groupcaps={
-			cracky={times={[2]=1.50, [3]=0.80}, maxwear=0.1, maxlevel=1}
+			cracky={times={[2]=2.00, [3]=1.20}, maxwear=0.1, maxlevel=1}
 		}
 	},
 })
@@ -48,7 +51,7 @@ minetest.register_tool("default:pick_stone", {
 	tool_capabilities = {
 		max_drop_level=0,
 		groupcaps={
-			cracky={times={[1]=1.50, [2]=0.80, [3]=0.60}, maxwear=0.05, maxlevel=1}
+			cracky={times={[1]=2.00, [2]=1.20, [3]=0.80}, maxwear=0.05, maxlevel=1}
 		}
 	},
 })
@@ -58,7 +61,7 @@ minetest.register_tool("default:pick_steel", {
 	tool_capabilities = {
 		max_drop_level=1,
 		groupcaps={
-			cracky={times={[1]=1.00, [2]=0.60, [3]=0.40}, maxwear=0.1, maxlevel=2}
+			cracky={times={[1]=1.20, [2]=0.80, [3]=0.50}, maxwear=0.1, maxlevel=2}
 		}
 	},
 })
@@ -1524,11 +1527,4 @@ minetest.register_on_chat_message(function(name, message)
 	end
 end)
 
---
--- Done, print some random stuff
---
-
---print("minetest.registered_entities:")
---dump2(minetest.registered_entities)
-
 -- END

mods/default/mapgen.lua

+-- minetest/default/mapgen.lua
+
+local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
+	if maxp.y < height_min or minp.y > height_max then
+		return
+	end
+	local y_min = math.max(minp.y, height_min)
+	local y_max = math.min(maxp.y, height_max)
+	local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
+	local pr = PseudoRandom(seed)
+	local num_chunks = math.floor(chunks_per_volume * volume)
+	local inverse_chance = math.floor(27 / ore_per_chunk)
+	--print("generate_ore num_chunks: "..dump(num_chunks))
+	for i=1,num_chunks do
+		local y0 = pr:next(y_min, y_max)
+		if y0 >= height_min and y0 <= height_max then
+			local x0 = pr:next(minp.x, maxp.x)
+			local z0 = pr:next(minp.z, maxp.z)
+			local p0 = {x=x0, y=y0, z=z0}
+			for x1=-1,1 do
+			for y1=-1,1 do
+			for z1=-1,1 do
+				if pr:next(1,inverse_chance) == 1 then
+					local x2 = x0+x1
+					local y2 = y0+y1
+					local z2 = z0+z1
+					local p2 = {x=x2, y=y2, z=z2}
+					if minetest.env:get_node(p2).name == wherein then
+						minetest.env:set_node(p2, {name=name})
+					end
+				end
+			end
+			end
+			end
+		end
+	end
+	--print("generate_ore done")
+end
+
+minetest.register_on_generated(function(minp, maxp, seed)
+	generate_ore("default:stone_with_coal", "default:stone", minp, maxp, seed,   1/8/8/8, 5, -64, 64)
+	generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/16/16/16, 5, 3, 7)
+	generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/12/12/12, 5, -16, 2)
+	generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/9/9/9, 5, -64, -17)
+end)
+