bersk/odin-space-invaders
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added different scaling, breaking change

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This commit is contained in:
Stefan Stefanov 2024-02-10 23:04:35 +02:00
parent 8bc4572ae3
commit 799e5ad9eb
4 changed files with 92 additions and 57 deletions
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94
main.odin
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@ -6,9 +6,6 @@ import glm "core:math/linalg/glsl"
import rl "vendor:raylib"
// orignal resolution of space invaders
// 256 x 224 px
TEXTURE_ATLAS_PATH :: "./assets/texture_atlas.png"
DEBUG_MODE :: false
@ -19,55 +16,36 @@ GameEndType :: enum {
AliensReachedPlayer,
}
GameState :: struct {
// window
target_fps: c.int,
title: cstring,
screen_width: c.int,
screen_height: c.int,
// frame stats
frame_counter: int,
current_frame_time: f64,
last_frame_time: f64,
delta_time: f64,
// game vars
screen: GameScreen,
previous_screen: GameScreen,
last_frame_screen: GameScreen,
game_end: GameEndType,
reset_game: bool,
aliens: #soa[ALIENS]Alien,
bullets: #soa[MAX_BULLETS]Bullet,
bullet_index: int,
player_last_time_fired: f64,
player_pos: glm.vec2,
player_health: c.int,
player_score: c.int,
player_high_score: c.int,
shuffle_dir: ShuffleDirection,
last_shuffle_dir: ShuffleDirection,
}
state: GameState
ratio: i32
texture_atlas_image: rl.Image
texture_atlas: rl.Texture2D
camera := rl.Camera2D {
zoom = 2,
zoom = GLOBAL_SPRITE_SCALE,
}
// orignal resolution of space invaders: 256 x 224 px
setup :: proc(state: ^GameState) {
using state
target_fps = 60
screen_width = 800 * 2
screen_height = 600 * 2
title = "Space Invaders (raylib+odin-lang edition)"
monitor := rl.GetCurrentMonitor()
screen_width = rl.GetMonitorWidth(monitor)
screen_height = rl.GetMonitorHeight(monitor)
current_frame_time = rl.GetTime()
previous_screen = .TITLE
screen = .TITLE
rl.SetTargetFPS(target_fps)
if !ODIN_DEBUG {
rl.SetExitKey(nil)
} else {
log.info("Built with Odin compiler version: ", ODIN_VERSION)
}
}
update :: proc(state: ^GameState) {
@ -81,13 +59,31 @@ update :: proc(state: ^GameState) {
update_screen(state)
}
target: rl.RenderTexture2D
draw :: proc(state: ^GameState) {
rl.BeginTextureMode(target)
{
draw_screen(state)
}
rl.EndTextureMode()
rl.BeginDrawing()
rl.ClearBackground(rl.RAYWHITE)
rl.BeginMode2D(camera)
draw_screen(state)
rl.EndMode2D()
{
rl.ClearBackground(rl.RAYWHITE)
rl.DrawTexturePro(
target.texture,
{0, 0, f32(target.texture.width), f32(-target.texture.height)},
{
f32((state.screen_width - (target.texture.width * ratio)) / 2),
0,
f32(target.texture.width * ratio),
f32(target.texture.height * ratio),
},
{0, 0},
0,
rl.WHITE,
)
}
rl.EndDrawing()
}
@ -96,16 +92,18 @@ main :: proc() {
log.info(state.screen)
rl.InitWindow(1200, 720, "title")
defer rl.CloseWindow()
rl.RestoreWindow()
rl.SetWindowState({.WINDOW_RESIZABLE, .WINDOW_MAXIMIZED})
setup(&state)
rl.InitWindow(state.screen_width, state.screen_height, state.title)
defer rl.CloseWindow()
if !ODIN_DEBUG {
rl.SetExitKey(nil)
} else {
log.info("Built with Odin compiler version: ", ODIN_VERSION)
}
width: i32 = 720;height: i32 = 520
target = rl.LoadRenderTexture(width, height)
defer rl.UnloadRenderTexture(target)
ratio = i32(state.screen_height / target.texture.height)
texture_atlas_image = rl.LoadImage(TEXTURE_ATLAS_PATH)
texture_atlas = rl.LoadTextureFromImage(texture_atlas_image)