1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
const ball = @import("ball.zig");
const inputs = @import("inputs.zig");
const std = @import("std");
const utils = @import("utils.zig");
const w4 = @import("wasm4.zig");
pub const Brother = struct {
side: utils.side,
score: u8,
// position of the bottom left corner
x: u8,
y: f64,
vy: f64,
pub fn collide(self: Brother, b: *ball.Ball) void {
// compute the collision box
const x1: f64 = @intToFloat(f64, self.x) - ball.ball_width;
const x2: f64 = @intToFloat(f64, self.x) + brother_width;
const y1: f64 = self.y - brother_height - ball.ball_height;
const y2: f64 = self.y - brother_height;
if (b.x >= x1 and b.x < x2 and b.y >= y1 and b.y < y2) {
// horizontal adjustement
b.vx += (b.x - @intToFloat(f64, self.x) - 4) * 10;
// vertical adjustment
if (b.vy > 0) {
b.vy = -b.vy * utils.bounce;
if (self.vy < 0)
b.vy *= 2;
}
b.vy -= 22;
b.y = y1;
}
}
pub fn draw(self: Brother) void {
var y = @floatToInt(u8, std.math.round(self.y));
w4.DRAW_COLORS.* = 0x30;
w4.blit(&brother, self.x, y - brother_height, brother_width, brother_height, brother_flags);
var buf: [3]u8 = undefined;
w4.DRAW_COLORS.* = 0x32;
_ = std.fmt.formatIntBuf(&buf, self.score, 10, .lower, .{ .width = 3 });
if (self.side == .left) {
w4.text(buf[0..], 0, 0);
} else {
w4.text(buf[0..], 136, 0);
}
}
pub fn reset(self: *Brother, side: utils.side) void {
self.side = side;
self.score = 0;
}
pub fn resetRound(self: *Brother) void {
self.x = utils.startingX[@enumToInt(self.side)];
self.y = 160;
}
pub fn update(self: *Brother, gamepad: inputs.Gamepad) void {
if (gamepad.held.left and self.x > utils.leftLimit[@enumToInt(self.side)])
self.x -= 1;
if (gamepad.held.right and self.x <= utils.rightLimit[@enumToInt(self.side)] - brother_width)
self.x += 1;
if (self.y < 160) { // jumping!
self.vy += utils.gravity;
self.y += self.vy * utils.frequency;
if (self.y > 160)
self.y = 160;
} else if (gamepad.pressed.up or gamepad.pressed.x) {
self.vy = -200;
self.y += self.vy * utils.frequency;
}
}
};
//----- Sprite ----------------------------------------------------------------
const brother_width = 16;
const brother_height = 32;
const brother_flags = 0; // BLIT_1BPP
const brother = [64]u8{ 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xfb, 0xdf, 0xfb, 0xdf, 0xfb, 0xdf, 0xfb, 0xdf, 0xf9, 0x9f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f, 0xf8, 0x1f };
|
