bersk/odin-space-invaders
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Added more flexible scaling

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This commit is contained in:
Stefan Stefanov 2024-02-12 21:02:07 +02:00
parent 7eaa303d6f
commit bb4393557a
1 changed files with 18 additions and 12 deletions
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30
main.odin
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@ -17,24 +17,22 @@ GameEndType :: enum {
} }
state: GameState state: GameState
ratio: i32 ratio: f32
texture_atlas_image: rl.Image texture_atlas_image: rl.Image
texture_atlas: rl.Texture2D texture_atlas: rl.Texture2D
camera := rl.Camera2D { window_width: i32
zoom = GLOBAL_SPRITE_SCALE, window_height: i32
}
window_width : i32; window_height: i32
// orignal resolution of space invaders: 256 x 224 px // orignal resolution of space invaders: 256 x 224 px
setup :: proc(state: ^GameState) { setup :: proc(state: ^GameState) {
using state using state
target_fps = 60 target_fps = 60
monitor := rl.GetCurrentMonitor() // monitor := rl.GetCurrentMonitor()
window_width = rl.GetMonitorWidth(monitor) window_width = rl.GetScreenWidth()
window_height = rl.GetMonitorHeight(monitor) window_height = rl.GetScreenHeight()
current_frame_time = rl.GetTime() current_frame_time = rl.GetTime()
previous_screen = .TITLE previous_screen = .TITLE
@ -60,6 +58,7 @@ update :: proc(state: ^GameState) {
update_screen(state) update_screen(state)
} }
target: rl.RenderTexture2D target: rl.RenderTexture2D
draw :: proc(state: ^GameState) { draw :: proc(state: ^GameState) {
rl.BeginTextureMode(target) rl.BeginTextureMode(target)
@ -75,10 +74,10 @@ draw :: proc(state: ^GameState) {
target.texture, target.texture,
{0, 0, f32(target.texture.width), f32(-target.texture.height)}, {0, 0, f32(target.texture.width), f32(-target.texture.height)},
{ {
f32((window_width - (target.texture.width * ratio)) / 2), (f32(window_width) - (f32(target.texture.width) * ratio)) / 2,
0, 0,
f32(target.texture.width * ratio), f32(target.texture.width) * ratio,
f32(target.texture.height * ratio), f32(target.texture.height) * ratio,
}, },
{0, 0}, {0, 0},
0, 0,
@ -103,9 +102,11 @@ main :: proc() {
state.screen_width = 720 state.screen_width = 720
state.screen_height = 520 state.screen_height = 520
rl.SetWindowMinSize(state.screen_width, state.screen_height)
target = rl.LoadRenderTexture(state.screen_width, state.screen_height) target = rl.LoadRenderTexture(state.screen_width, state.screen_height)
defer rl.UnloadRenderTexture(target) defer rl.UnloadRenderTexture(target)
ratio = i32(window_height / target.texture.height) ratio = f32(window_height) / f32(target.texture.height)
texture_atlas_image = rl.LoadImage(TEXTURE_ATLAS_PATH) texture_atlas_image = rl.LoadImage(TEXTURE_ATLAS_PATH)
texture_atlas = rl.LoadTextureFromImage(texture_atlas_image) texture_atlas = rl.LoadTextureFromImage(texture_atlas_image)
@ -113,6 +114,11 @@ main :: proc() {
log.info("Loaded images") log.info("Loaded images")
for !rl.WindowShouldClose() { for !rl.WindowShouldClose() {
if rl.IsWindowResized() {
window_width = rl.GetScreenWidth()
window_height = rl.GetScreenHeight()
ratio = f32(window_height) / f32(target.texture.height)
}
update(&state) update(&state)
draw(&state) draw(&state)
} }