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feat(examples): core/basic_screen_manager & core/window_flags (#78)

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* feat(examples): add `core/basic_screen_manager`

* feat(examples): add WIP `core/window_flags`

* fix(examples): get `core/window_flags` working correctly
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Daniel Hill 2024-04-14 14:26:29 -04:00 • committed by GitHub
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examples/core/basic_screen_manager.zig Normal file
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//! # raylib-zig [core] examples - basic screen manager
//!
//! NOTE: This example illustrates a very simple screen manager based on a
//! states machines
//!
//! Example originally created with raylib-zig 5.0, last time updated with
//! raylib-zig 5.0
//!
//! Copyright (c) Nikolas Wipper 2024
const rl = @import("raylib");
const screen_width = 800;
const screen_height = 450;
/// Valid game states used in the state machine
const GameScreen = enum {
logo,
title,
gameplay,
ending,
};
pub fn main() anyerror!void {
// Initialization
// -------------------------------------------------------------------------
rl.initWindow(
screen_width,
screen_height,
"raylib-zig [core] example - basic screen height",
);
defer rl.closeWindow(); // Close window and OpenGL context
// TODO: Initialize all required variables and load all required data here!
var current_screen: GameScreen = .logo;
var frames_counter: i32 = 0; // Useful to count frames
rl.setTargetFPS(60); // Set desired framerate
// Main game loop
while (!rl.windowShouldClose()) { // Detect window close button or ESC key
// Update
// ---------------------------------------------------------------------
switch (current_screen) {
.logo => {
// TODO: Update `logo` state variables here!
frames_counter += 1; // Count frames
// Wait for 2 seconds (120 frames) before jumping to `title` screen
if (frames_counter > 120) current_screen = .title;
},
.title => {
// TODO: Update `title` state variables here!
// Press ENTER to change to `gameplay` state
if (rl.isKeyPressed(.key_enter) or rl.isGestureDetected(.gesture_tap)) {
current_screen = .gameplay;
}
},
.gameplay => {
// TODO: Update `gameplay` state variables here!
// Press ENTER to change to `ending` state
if (rl.isKeyPressed(.key_enter) or rl.isGestureDetected(.gesture_tap)) {
current_screen = .ending;
}
},
.ending => {
// TODO: Update `ending` state variables here!
// Press ENTER to return to `title` state
if (rl.isKeyPressed(.key_enter) or rl.isGestureDetected(.gesture_tap)) {
current_screen = .title;
}
},
}
// ---------------------------------------------------------------------
// Draw
// ---------------------------------------------------------------------
{
rl.beginDrawing();
defer rl.endDrawing();
rl.clearBackground(rl.Color.ray_white);
switch (current_screen) {
.logo => {
// TODO: Draw `logo` state here!
rl.drawText("LOGO SCREEN", 20, 20, 40, rl.Color.light_gray);
rl.drawText(
"WAIT for 2 SECONDS...",
290,
220,
20,
rl.Color.gray,
);
},
.title => {
// TODO: Draw `title` state here!
rl.drawRectangle(
0,
0,
screen_width,
screen_height,
rl.Color.green,
);
rl.drawText(
"TITLE SCREEN",
20,
20,
40,
rl.Color.dark_green,
);
rl.drawText(
"PRESS ENTER or TAP to JUMP to GAMEPLAY SCREEN",
120,
220,
20,
rl.Color.dark_green,
);
},
.gameplay => {
// TODO: Draw `gameplay` state here!
rl.drawRectangle(
0,
0,
screen_width,
screen_height,
rl.Color.purple,
);
rl.drawText("GAMEPLAY SCREEN", 20, 20, 40, rl.Color.maroon);
rl.drawText(
"PRESS ENTER or TAP to JUMP to ENDING SCREEN",
130,
220,
20,
rl.Color.maroon,
);
},
.ending => {
// TODO: Draw `ending` state here!
rl.drawRectangle(
0,
0,
screen_width,
screen_height,
rl.Color.blue,
);
rl.drawText(
"ENDING SCREEN",
20,
20,
40,
rl.Color.dark_blue,
);
rl.drawText(
"PRESS ENTER or TAP to RETURN to TITLE SCREEN",
120,
220,
20,
rl.Color.dark_blue,
);
},
}
}
// ---------------------------------------------------------------------
}
}