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codemob-dev 2025-07-29 11:29:08 -04:00
parent 5c2e165ba2
commit 9c0e0e3912
1 changed files with 10 additions and 20 deletions
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30
src/models.zig
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@ -279,10 +279,8 @@ pub const Model = struct {
} }
} }
// The theoretical maximum (I could come up with) is a 3d checkerboard pattern. var collision: std.ArrayList(AABB) = .init(main.globalAllocator.allocator);
self.collision = main.globalAllocator.alloc(AABB, meshGridSize*meshGridSize*meshGridSize/2);
var i: usize = 0;
for(0..meshGridSize) |x| { for(0..meshGridSize) |x| {
for(0..meshGridSize) |y| { for(0..meshGridSize) |y| {
for(0..meshGridSize) |z| { for(0..meshGridSize) |z| {
@ -300,24 +298,17 @@ pub const Model = struct {
} }
setAll(&grid, boxMin, boxMax, false); setAll(&grid, boxMin, boxMax, false);
const minBlockX = @as(f32, @floatFromInt(boxMin[0]))/meshGridSize; const min = @as(Vec3f, @floatFromInt(boxMin))/@as(Vec3f, @splat(meshGridSize));
const minBlockY = @as(f32, @floatFromInt(boxMin[1]))/meshGridSize; const max = @as(Vec3f, @floatFromInt(boxMax))/@as(Vec3f, @splat(meshGridSize));
const minBlockZ = @as(f32, @floatFromInt(boxMin[2]))/meshGridSize;
const min = Vec3f{minBlockX, minBlockY, minBlockZ};
const maxBlockX = @as(f32, @floatFromInt(boxMax[0]))/meshGridSize; collision.append(AABB{.min = min, .max = max}) catch unreachable;
const maxBlockY = @as(f32, @floatFromInt(boxMax[1]))/meshGridSize;
const maxBlockZ = @as(f32, @floatFromInt(boxMax[2]))/meshGridSize;
const max = Vec3f{maxBlockX, maxBlockY, maxBlockZ};
self.collision[i] = AABB{.min = min, .max = max};
i += 1;
} }
} }
} }
} }
self.collision = main.globalAllocator.realloc(self.collision, i); collision.shrinkAndFree(collision.items.len);
self.collision = collision.items;
} }
fn allTrue(grid: *const [meshGridSize][meshGridSize][meshGridSize]bool, min: Vec3i, max: Vec3i) bool { fn allTrue(grid: *const [meshGridSize][meshGridSize][meshGridSize]bool, min: Vec3i, max: Vec3i) bool {
@ -337,11 +328,10 @@ pub const Model = struct {
} }
fn setAll(grid: *[meshGridSize][meshGridSize][meshGridSize]bool, min: Vec3i, max: Vec3i, value: bool) void { fn setAll(grid: *[meshGridSize][meshGridSize][meshGridSize]bool, min: Vec3i, max: Vec3i, value: bool) void {
for(@intCast(min[0])..@intCast(max[0])) |x| { for (@intCast(min[0])..@intCast(max[0])) |x| {
for(@intCast(min[1])..@intCast(max[1])) |y| { for (@intCast(min[1])..@intCast(max[1])) |y| {
for(@intCast(min[2])..@intCast(max[2])) |z| { const row = grid[x][y][@intCast(min[2])..@intCast(max[2])];
grid[x][y][z] = value; @memset(row, value);
}
} }
} }
} }