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zig-raylib-engine
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master
RedStealthDev 9 months ago
parent 13ae79ae3e
commit 6f41b8008b
9 changed files with 88 additions and 240 deletions
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3
.gitmodules vendored
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@ -1,3 +1,6 @@
[submodule "raylib-zig"]
path = raylib-zig
url = https://github.com/Not-Nik/raylib-zig.git
[submodule "zig-ecs"]
path = zig-ecs
url = https://github.com/prime31/zig-ecs.git

15
.vscode/launch.json vendored
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{
"version": "0.2.0",
"configurations": [
{
"type": "cppvsdbg",
"request": "launch",
"name": "(gdb) launch",
"program": "${workspaceFolder}/zig-out/bin/zig-raylib-game-test.exe",
"args": [],
"cwd": "${workspaceFolder}",
"console": "integratedTerminal",
"preLaunchTask": "zig debug build"
}
]
}

10
.vscode/tasks.json vendored
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{
"version": "2.0.0",
"tasks": [
{
"label": "zig debug build",
"type": "shell",
"command": "zig build"
}
]
}

19
build.zig
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const std = @import("std");
const rl = @import("raylib-zig/build.zig");
const ecs = @import("zig-ecs/build.zig");
pub fn build(b: *std.Build) !void {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
var raylib = rl.getModule(b, "raylib-zig");
var raylib_math = rl.math.getModule(b, "raylib-zig");
var zigecs = ecs.getModule(b, "zig-ecs");
//web exports are completely separate
if (target.getOsTag() == .emscripten) {
const exe_lib = rl.compileForEmscripten(b, "zig-raylib-game-test", "src/main.zig", target, optimize);
exe_lib.addModule("raylib", raylib);
exe_lib.addModule("raylib-math", raylib_math);
const raylib_artifact = rl.getRaylib(b, target, optimize);
// Note that raylib itself is not actually added to the exe_lib output file, so it also needs to be linked with emscripten.
exe_lib.linkLibrary(raylib_artifact);
const link_step = try rl.linkWithEmscripten(b, &[_]*std.Build.Step.Compile{ exe_lib, raylib_artifact });
b.getInstallStep().dependOn(&link_step.step);
const run_step = try rl.emscriptenRunStep(b);
run_step.step.dependOn(&link_step.step);
const run_option = b.step("run", "Run zig-raylib-game-test");
run_option.dependOn(&run_step.step);
return;
}
const exe = b.addExecutable(.{ .name = "zig-raylib-game-test", .root_source_file = .{ .path = "src/main.zig" }, .optimize = optimize, .target = target });
rl.link(b, exe, target, optimize);
exe.addModule("raylib", raylib);
exe.addModule("raylib-math", raylib_math);
exe.addModule("zig-ecs", zigecs);
const run_cmd = b.addRunArtifact(exe);
const run_step = b.step("run", "Run zig-raylib-game-test");
@ -35,4 +23,3 @@ pub fn build(b: *std.Build) !void {
b.installArtifact(exe);
}

129
src/EntitySystem.zig
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const std = @import("std");
const Etyp = @import("EntitySystemTypes.zig");
//Variables Entity
var EntityIDs: std.ArrayList(usize) = undefined;
var EntityAmount: u32 = 0;
var Signatures: std.ArrayList(Etyp.Signature) = undefined;
//Entity System
fn CreateEntitysub() !Etyp.Entity {
if (EntityAmount >= Etyp.MAXEntitys) {
return error.GenericError;
}
EntityAmount += 1;
return EntityIDs.pop();
}
fn DestroyEntitysub(entity: Etyp.Entity) void {
Signatures.items[entity] = null;
EntityIDs.append(entity);
EntityAmount -= 1;
}
fn SetSignature(entity: Etyp.Entity, signature: Etyp.Signature) void {
Signatures.items[entity] = signature;
}
fn GetSignature(entity: Etyp.Entity) Etyp.Signature {
return Signatures.items[entity];
}
//Component Manager variables
var ComponentTypeList: std.StringArrayHashMap(Etyp.Component) = std.StringArrayHashMap(Etyp.Component).init(std.heap.page_allocator);
var ComponentArrays: std.StringArrayHashMap(usize) = std.StringArrayHashMap(usize).init(std.heap.page_allocator);
var String2CompArr: std.StringArrayHashMap(usize) = std.StringArrayHashMap(usize).init(std.heap.page_allocator);
var NextComponent: Etyp.Component = 0;
//component manager
fn RegisterComponentsub(comptime in: anytype) !void {
var name = @typeName(in);
try ComponentTypeList.put(name, NextComponent);
ComponentArrays = Etyp.ComponentArray(in).init();
try String2CompArr.put(name, ComponentArrays.len);
}
fn GetComponentArray(comptime in: type) type {
return ComponentArrays[@typeName(in)]();
}
fn GetComponentTypesub(comptime in: type) Etyp.Component{
return ComponentTypeList[@typeName(in)];
}
fn AddComponentsub(Entity: Etyp.Entity, comptime Component: type) void{
GetComponentArray(Component).AddComponent(Entity, Component);
}
fn RemoveComponentsub(Entity: Etyp.Entity, comptime in: anytype) void{
GetComponentArray(in).Removedata(Entity);
}
fn GetComponentsub(Entity: Etyp.Entity, comptime in: type) type{
return GetComponentArray(in).GetData(Entity);
}
fn EntityDestroyed(Entity: Etyp.Entity) void{
for(ComponentArrays.values())|val|{
val.EntityDestroyed(Entity);
}
}
//THE MASTER
pub fn Init() !void{
EntityIDs = init: {
var temp = try std.ArrayList(usize).initCapacity(std.heap.page_allocator, Etyp.MAXEntitys);
var i = Etyp.MAXEntitys;
while (i > 0) {
temp.appendAssumeCapacity(i);
i -= 1;
}
break :init temp;
};
Signatures = try std.ArrayList(Etyp.Signature).initCapacity(std.heap.page_allocator, Etyp.MAXEntitys);
}
pub fn CreateEntity() !Etyp.Entity{
return try CreateEntitysub();
}
pub fn DestroyEntity(Entity: Etyp.entity) void{
DestroyEntitysub(Entity);
EntityDestroyed(Entity);
}
pub fn RegisterComponent(comptime in: anytype) !void{
try RegisterComponentsub(in);
}
pub fn AddComponent(Entity: Etyp.Entity, comptime in: anytype) void{
AddComponentsub(Entity, in);
var sig = GetSignature(Entity);
sig.setValue(GetComponentTypesub(in), true);
SetSignature(Entity, sig);
}
pub fn RemoveComponent(Entity: Etyp.Entity, comptime in: anytype) void{
RemoveComponentsub(Entity, in);
var sig = GetSignature(Entity);
sig.setValue(GetComponentTypesub(in), false);
SetSignature(Entity, sig);
}
pub fn GetComponent(Entity: Etyp.Entity, comptime in: anytype) @TypeOf(in){
return GetComponentsub(Entity, in);
}
pub fn GetComponentType(comptime in: anytype) Etyp.Component{
return GetComponentTypesub(in);
}
pub fn GetEntitys(Signature: Etyp.Signature) []Etyp.Entity{
var sel = std.ArrayList(Etyp.Entity).init(std.heap.page_allocator);
for(Signatures.items, 0..)|val, i|{
if(val.intersectWith(Signature) == Signature){
try sel.append(i);
}
}
return sel.items;
}

85
src/EntitySystemTypes.zig
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const std = @import("std");
const rl = @import("raylib");
//Max Vars
pub const MAXEntitys: u32 = 1000;
pub const MAXComponents: u32 = 32;
//Id Types
pub const Entity = usize;
pub const Component = usize;
pub const Signature = std.bit_set.IntegerBitSet(MAXComponents);
//Component array type
pub fn ComponentArray (comptime T: type) type {
return struct {
Components: [MAXEntitys]T,
Entity2Array: std.AutoArrayHashMap(Entity, usize),
Array2Entity: std.AutoArrayHashMap(usize, Entity),
sizeM: usize,
const Self = @This();
pub fn AddComponent(entity: Entity, comp: T) void {
var newidx: usize = Self.sizeM;
Self.Entity2Array[entity] = newidx;
Self.Entity2Array[newidx] = entity;
Self.Components[newidx] = comp;
Self.sizeM += 1;
}
pub fn Removedata(entity: Entity) void {
var remidx: usize = Self.Entity2Array[entity];
var lastidx: usize = Self.sizeM - 1;
Self.Components[remidx] = Self.Components[lastidx];
var lastentity: entity = Self.Array2Entity[lastidx];
Self.Entity2Array[lastentity] = remidx;
Self.Array2Entity[remidx] = lastentity;
Self.Entity2Array[entity] = null;
Self.Array2Entity[lastentity] = null;
Self.sizeM -= 1;
}
pub fn GetData(entity: Entity) type {
return Self.Components[Self.Entity2Array[entity]];
}
pub fn EntityDestroyed(self: ComponentArray, entity: Entity) void {
for(self.Array2Entity) |val|{
if(val == entity){
self.Removedata(entity);
return;
}
}
}
pub fn init() Self{
return .{
.Components = undefined,
.Entity2Array = std.AutoArrayHashMap(Entity, usize).init(std.heap.page_allocator),
.Array2Entity = std.AutoArrayHashMap(usize, Entity).init(std.heap.page_allocator),
.sizeM = 0
};
}
};
}
//Components
pub const Transform = struct {
pos: rl.Vector2,
rot: f16,
};
//Systems
pub const Systems = struct {
const Self = @This();
pub fn Gravity() void{
}
pub const Rigidbody = struct {
vel: rl.Vector2,
};
pub const Gravity = struct {
vel: rl.Vector2,
};
pub const Sprite = struct {
image: rl.Texture2D,
};

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66
src/main.zig
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const rl = @import("raylib");
const std = @import("std");
const EnS = @import("EntitySystem.zig");
const Etyp = @import("EntitySystemTypes.zig");
const ecs = @import("zig-ecs");
const EnSysTypes = @import("EntitySystemTypes.zig");
const time = @cImport(@cInclude("time.h"));
pub fn main() anyerror!void {
const screenWidth = 1280;
const screenWidth = 1280; // set screen size
const screenHeight = 720;
rl.initWindow(screenWidth, screenHeight, "AHHHH");
rl.initWindow(screenWidth, screenHeight, "AHHHH"); // make window
defer rl.closeWindow();
var alloc = std.heap.ArenaAllocator.init(std.heap.page_allocator);
var ptr = try alloc.allocator().create(Etyp.Transform);
ptr.* = Etyp.Transform{ .pos = rl.Vector2.init(0, 0), .rot = 0 };
//rl.setTargetFPS(60);
try EnS.Init();
try EnS.RegisterComponent(Etyp.Transform);
var Aloc = std.heap.ArenaAllocator.init(std.heap.page_allocator); // specify memory allocator
defer Aloc.deinit();
var player = try EnS.CreateEntity();
EnS.AddComponent(player, Etyp.Transform{ .pos = rl.Vector2.init(0, 0), .rot = 0 });
var reg = ecs.Registry.init(Aloc.allocator()); // specify Entity Registry
try SetupECS(&reg); // run Entity Registry setup
rl.setTargetFPS(60); // set max fps
var delta: f32 = 0;
while (!rl.windowShouldClose()) {
Etyp.Systems.Gravity();
rl.beginDrawing();
defer rl.endDrawing();
var pos = EnS.GetComponent(player, Etyp.Transform).pos;
rl.clearBackground(rl.Color.black);
rl.drawRectangle(pos.x, pos.y, 5, 5, rl.Color.gold);
try PhysicsSystem(&reg, delta);
try DrawSystem(&reg);
rl.clearBackground(rl.Color.black);
rl.drawFPS(10, 10);
const text = try std.fmt.allocPrintZ(Aloc.allocator(), "{d}", .{delta});
rl.drawText(text, 500, 10, 11, rl.Color.white);
delta = 1.0 / @as(f32, @floatFromInt(rl.getFPS()));
}
}
pub fn SetupECS(reg: *ecs.Registry) !void {
var player = reg.create();
reg.add(player, EnSysTypes.Transform{.pos = rl.Vector2.init(50, 50), .rot = 0});
reg.add(player, EnSysTypes.Rigidbody{.vel = rl.Vector2.init(0, 0)});
reg.add(player, EnSysTypes.Gravity{.vel = rl.Vector2.init(0, 0)});
reg.add(player, EnSysTypes.Sprite{.image = rl.loadTexture("src/Images/9k.png")});
}
pub fn DrawSystem(reg: *ecs.Registry) !void {
var view = reg.*.view(.{EnSysTypes.Transform, EnSysTypes.Sprite}, .{});
var iter = view.entityIterator();
while(iter.next())|entity|{
const Transform = view.getConst(EnSysTypes.Transform, entity);
const Sprite = view.getConst(EnSysTypes.Sprite, entity);
rl.drawTextureEx(Sprite.image, Transform.pos, Transform.rot, 1, rl.Color.white);
}
}
pub fn PhysicsSystem(reg: *ecs.Registry, deltaTime: f32) !void {
var view = reg.*.view(.{EnSysTypes.Transform, EnSysTypes.Rigidbody, EnSysTypes.Gravity}, .{});
var iter = view.entityIterator();
while(iter.next())|entity|{
var Rigidbody = view.get(EnSysTypes.Rigidbody, entity);
var Transform = view.get(EnSysTypes.Transform, entity);
const Gravity = view.getConst(EnSysTypes.Gravity, entity);
Rigidbody.*.vel.x += Gravity.vel.x;
Rigidbody.*.vel.y += Gravity.vel.y;
Transform.*.pos.x += Rigidbody.*.vel.x / deltaTime;
Transform.*.pos.y += Rigidbody.*.vel.y / deltaTime;
}
}

1
zig-ecs

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Subproject commit d7f7b8d3ea137b9e53cc421f628ccdb0776285fc
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