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add player animations

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This commit is contained in:
Rokas Puzonas 2026-01-28 05:11:23 +02:00
parent 97829b485c
commit e8b565508f
4 changed files with 129 additions and 86 deletions
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1
.gitignore vendored
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@ -1,2 +1,3 @@
zig-out
.zig-cache
*.tiled-session

15
src/assets.zig
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@ -23,7 +23,9 @@ wood01: Audio.Data.Id,
map: tiled.Tilemap,
tilesets: tiled.Tileset.List,
tileset_texture: Gfx.TextureId,
players_texture: Gfx.TextureId,
tile_size: Engine.Vec2,
player_size: Engine.Vec2,
pub fn init(gpa: std.mem.Allocator) !Assets {
const font_id_array: FontName.EnumArray = .init(.{
@ -60,6 +62,15 @@ pub fn init(gpa: std.mem.Allocator) !Assets {
var tilesets: tiled.Tileset.List = .empty;
try tilesets.add(gpa, "tileset.tsx", tileset);
const players_image = try STBImage.load(@embedFile("assets/kenney_desert-shooter-pack_1.0/PNG/Players/tilemap_packed.png"));
defer players_image.deinit();
const players_texture = try Gfx.addTexture(&.{
.{
.width = players_image.width,
.height = players_image.height,
.rgba = players_image.rgba8_pixels
}
});
const tileset_image = try STBImage.load(@embedFile("assets/kenney_desert-shooter-pack_1.0/PNG/Tiles/tilemap_packed.png"));
defer tileset_image.deinit();
@ -77,7 +88,9 @@ pub fn init(gpa: std.mem.Allocator) !Assets {
.map = map,
.tilesets = tilesets,
.tileset_texture = tileset_texture,
.tile_size = .init(16, 16)
.tile_size = .init(16, 16),
.players_texture = players_texture,
.player_size = .init(24, 24)
};
}

50
src/assets/game-2026-01-18.tiled-session
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@ -1,50 +0,0 @@
{
"Map/SizeTest": {
"height": 4300,
"width": 2
},
"activeFile": "map.tmx",
"expandedProjectPaths": [
],
"fileStates": {
"map.tmx": {
"scale": 1.5,
"selectedLayer": 0,
"viewCenter": {
"x": 49.33333333333337,
"y": 182
}
},
"tilemap.tsx": {
"dynamicWrapping": false,
"scaleInDock": 1.5,
"scaleInEditor": 5.5
},
"tiles.tsx": {
"dynamicWrapping": true,
"scaleInDock": 1,
"scaleInEditor": 1
}
},
"last.imagePath": "/home/rokas/code/games/game-2026-01-18/src/assets/kenney_desert-shooter-pack_1.0/PNG/Tiles",
"map.fixedSize": false,
"map.lastUsedFormat": "tmx",
"map.tileHeight": 16,
"map.tileWidth": 16,
"openFiles": [
"tilemap.tsx",
"map.tmx"
],
"project": "game-2026-01-18.tiled-project",
"recentFiles": [
"tilemap.tsx",
"map.tmx",
"tiles.tsx"
],
"tileset.lastUsedFormat": "tsx",
"tileset.tileSize": {
"height": 16,
"width": 16
},
"tileset.type": 0
}

149
src/game.zig
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@ -9,27 +9,91 @@ const imgui = Engine.imgui;
const Vec2 = Engine.Vec2;
const Rect = Engine.Math.Rect;
const rgb = Engine.Math.rgb;
const TextureId = Engine.Graphics.TextureId;
const Game = @This();
const Animation = struct {
texture: TextureId,
frames: []Frame,
const Frame = struct {
uv: Rect,
duration: f32,
};
const State = struct {
frame_index: usize,
timer: f32,
const default = State{
.frame_index = 0,
.timer = 0
};
pub fn update(self: *State, animation: Animation, dt: f32) void {
self.timer += dt;
while (true) {
self.frame_index = @mod(self.frame_index, animation.frames.len);
const frame = animation.frames[self.frame_index];
if (self.timer < frame.duration) {
break;
}
self.timer -= frame.duration;
self.frame_index += 1;
}
}
};
};
arena: std.heap.ArenaAllocator,
gpa: Allocator,
assets: *Assets,
player: Vec2,
player_anim_state: Animation.State = .default,
last_faced_left: bool = false,
player_anim: Animation,
pub fn init(gpa: Allocator, assets: *Assets) !Game {
var arena = std.heap.ArenaAllocator.init(gpa);
errdefer arena.deinit();
const texture_info = Engine.Graphics.getTextureInfo(assets.players_texture);
const tilemap_size = Vec2.initFromInt(u32, texture_info.width, texture_info.height);
const tile_size = assets.player_size;
const player_anim = Animation{
.texture = assets.players_texture,
.frames = try arena.allocator().dupe(Animation.Frame, &.{
.{
.uv = getUVFromTilemap(tilemap_size, tile_size, 0, 0),
.duration = 0.1,
},
.{
.uv = getUVFromTilemap(tilemap_size, tile_size, 1, 0),
.duration = 0.1,
},
.{
.uv = getUVFromTilemap(tilemap_size, tile_size, 2, 0),
.duration = 0.15,
}
}),
};
return Game{
.arena = arena,
.gpa = gpa,
.assets = assets,
.player = findSpawnpoint(assets) orelse .init(0, 0)
.player = findSpawnpoint(assets) orelse .init(0, 0),
.player_anim = player_anim
};
}
pub fn deinit(self: *Game) void {
_ = self; // autofix
self.arena.deinit();
}
fn findSpawnpoint(assets: *Assets) ?Vec2 {
const map = assets.map;
for (map.layers) |layer| {
@ -43,22 +107,34 @@ fn findSpawnpoint(assets: *Assets) ?Vec2 {
}
const point = object.shape.point;
if (std.mem.eql(u8, object.name, "spawnpoint")) {
const tile_height: f32 = @floatFromInt(map.tile_height);
const tile_width: f32 = @floatFromInt(map.tile_width);
return .init(point.x / tile_width, point.y / tile_height);
return .init(point.x, point.y);
}
}
}
return null;
}
fn getUVFromTilemap(tilemap_size: Vec2, tile_size: Vec2, tile_x: f32, tile_y: f32) Rect {
return .{
.pos = Vec2.init(tile_x, tile_y).multiply(tile_size).divide(tilemap_size),
.size = tile_size.divide(tilemap_size),
};
}
fn getUVFromTilemapByID(tilemap_size: Vec2, tile_size: Vec2, tile_id: u32) Rect {
const tile_id_f32: f32 = @floatFromInt(tile_id);
const width_in_tiles = tilemap_size.x / tile_size.x;
const tile_x = @rem(tile_id_f32, width_in_tiles);
const tile_y = @divFloor(tile_id_f32, width_in_tiles);
return getUVFromTilemap(tilemap_size, tile_size, tile_x, tile_y);
}
fn drawTilemap(self: *Game, frame: *Engine.Frame) void {
const texture = self.assets.tileset_texture;
const texture_info = Engine.Graphics.getTextureInfo(texture);
const map = self.assets.map;
const tile_size = Vec2.init(1, 1);
for (map.layers) |layer| {
if (layer.variant != .tile) {
continue;
@ -74,43 +150,29 @@ fn drawTilemap(self: *Game, frame: *Engine.Frame) void {
const tile_gid = tile_layer.get(x, y) orelse continue;
const tile = map.getTile(self.assets.tilesets, tile_gid) orelse continue;
const tilemap_width_in_tiles = @divExact(texture_info.width, tile.tileset.tile_width);
var uv: Rect = .{
.pos = Vec2.initFromInt(
u32,
@rem(tile.id, tilemap_width_in_tiles),
@divFloor(tile.id, tilemap_width_in_tiles),
).multiply(
.initFromInt(u32, tile.tileset.tile_width, tile.tileset.tile_height)
),
.size = self.assets.tile_size,
};
uv = uv.divide(.init(@floatFromInt(texture_info.width), @floatFromInt(texture_info.height)));
var rect = Rect{
.pos = .init(@floatFromInt(x), @floatFromInt(y)),
.size = .init(1, 1)
};
rect = rect.multiply(tile_size);
const tilemap_size = Vec2.initFromInt(u32,texture_info.width, texture_info.height);
const tile_size = Vec2.initFromInt(u32, tile.tileset.tile_width, tile.tileset.tile_height);
frame.drawRectangle(.{
.rect = rect,
.rect = Rect{
.pos = Vec2.initFromInt(i32, x, y).multiply(tile_size),
.size = tile_size
},
.color = rgb(255, 255, 255),
.texture = .{
.id = self.assets.tileset_texture,
.uv = uv
.uv = getUVFromTilemapByID(tilemap_size, tile_size,tile.id)
}
});
}
}
// map.getTile(layer, tilesets)
}
}
pub fn tick(self: *Game, frame: *Engine.Frame) !void {
const dt = frame.deltaTime();
const canvas_size = Vec2.init(20, 15);
const canvas_size = Vec2.init(20 * 16, 15 * 16);
frame.graphics.canvas_size = canvas_size;
if (frame.isKeyPressed(.F3)) {
@ -138,13 +200,19 @@ pub fn tick(self: *Game, frame: *Engine.Frame) !void {
}
dir = dir.normalized();
if (dir.x != 0 or dir.y != 0) {
self.player_anim_state.update(self.player_anim, dt);
} else {
self.player_anim_state.frame_index = 0;
}
// if (dir.x != 0 or dir.y != 0) {
// try frame.playAudio(.{
// .id = self.assets.wood01
// });
// }
self.player = self.player.add(dir.multiplyScalar(5 * dt));
self.player = self.player.add(dir.multiplyScalar(50 * dt));
const regular_font = self.assets.font_id.get(.regular);
@ -154,17 +222,28 @@ pub fn tick(self: *Game, frame: *Engine.Frame) !void {
.rect = .init(0, 0, canvas_size.x, canvas_size.y),
.color = rgb(20, 20, 20)
});
const size = Vec2.init(1, 1);
if (dir.x < 0) {
self.last_faced_left = true;
} else if (dir.x > 0) {
self.last_faced_left = false;
}
var size = self.assets.player_size;
if (self.last_faced_left) {
size.x *= -1;
}
frame.drawRectangle(.{
.rect = .{
.pos = self.player.sub(size.divideScalar(2)),
.size = size,
},
.color = rgb(200, 20, 20)
});
if (dir.x != 0 or dir.y != 0) {
frame.drawRectanglOutline(self.player.sub(size.divideScalar(2)), size, rgb(20, 200, 20), 0.1);
.color = rgb(255, 255, 255),
.texture = .{
.id = self.player_anim.texture,
.uv = self.player_anim.frames[self.player_anim_state.frame_index].uv
}
});
frame.drawText(self.player, "Player", .{
.font = regular_font,