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[example] Integrate virtual mouse in main example

This commit is contained in:
raysan5 2020-03-28 18:36:30 +01:00
parent e333eb415b
commit a5e1aff99b
3 changed files with 23 additions and 114 deletions
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24
examples/core/core_window_letterbox.c
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@ -1,6 +1,6 @@
/*******************************************************************************************
*
* raylib [core] example - window scale letterbox
* raylib [core] example - window scale letterbox (and virtual mouse)
*
* This example has been created using raylib 2.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
@ -16,6 +16,18 @@
#define max(a, b) ((a)>(b)? (a) : (b))
#define min(a, b) ((a)<(b)? (a) : (b))
// Clamp Vector2 value with min and max and return a new vector2
// NOTE: Required for virtual mouse, to clamp inside virtual game size
Vector2 ClampValue(Vector2 value, Vector2 min, Vector2 max)
{
Vector2 result = value;
result.x = (result.x > max.x)? max.x : result.x;
result.x = (result.x < min.x)? min.x : result.x;
result.y = (result.y > max.y)? max.y : result.y;
result.y = (result.y < min.y)? min.y : result.y;
return result;
}
int main(void)
{
const int windowWidth = 800;
@ -52,6 +64,13 @@ int main(void)
// Recalculate random colors for the bars
for (int i = 0; i < 10; i++) colors[i] = (Color){ GetRandomValue(100, 250), GetRandomValue(50, 150), GetRandomValue(10, 100), 255 };
}
// Update virtual mouse (clamped mouse value behind game screen)
Vector2 mouse = GetMousePosition();
Vector2 virtualMouse = { 0 };
virtualMouse.x = (mouse.x - (GetScreenWidth() - (gameScreenWidth*scale))*0.5f)/scale;
virtualMouse.y = (mouse.y - (GetScreenHeight() - (gameScreenHeight*scale))*0.5f)/scale;
virtualMouse = ClampValue(virtualMouse, (Vector2){ 0, 0 }, (Vector2){ gameScreenWidth, gameScreenHeight });
//----------------------------------------------------------------------------------
// Draw
@ -67,6 +86,9 @@ int main(void)
for (int i = 0; i < 10; i++) DrawRectangle(0, (gameScreenHeight/10)*i, gameScreenWidth, gameScreenHeight/10, colors[i]);
DrawText("If executed inside a window,\nyou can resize the window,\nand see the screen scaling!", 10, 25, 20, WHITE);
DrawText(TextFormat("Default Mouse: [%i , %i]", (int)mouse.x, (int)mouse.y), 350, 25, 20, GREEN);
DrawText(TextFormat("Virtual Mouse: [%i , %i]", (int)virtualMouse.x, (int)virtualMouse.y), 350, 55, 20, YELLOW);
EndTextureMode();

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examples/core/core_window_letterbox.png
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113
examples/core/core_window_letterbox_virtual_mouse.c
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/*******************************************************************************************
*
* raylib [core] example - window scale letterbox virtual mouse
*
* This example has been created using raylib 2.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Anata (@anatagawa) and reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2019 Anata (@anatagawa) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#define max(a, b) ((a)>(b)? (a) : (b))
#define min(a, b) ((a)<(b)? (a) : (b))
// Clamp Vector2 value with min and max and return a new vector2
Vector2 ClampValue(Vector2 value, Vector2 min, Vector2 max)
{
Vector2 result = value;
result.x = (result.x > max.x)? max.x : result.x;
result.x = (result.x < min.x)? min.x : result.x;
result.y = (result.y > max.y)? max.y : result.y;
result.y = (result.y < min.y)? min.y : result.y;
return result;
}
int main(void)
{
const int windowWidth = 800;
const int windowHeight = 450;
// Enable config flags for resizable window and vertical synchro
SetConfigFlags(FLAG_WINDOW_RESIZABLE | FLAG_VSYNC_HINT);
InitWindow(windowWidth, windowHeight, "raylib [core] example - window scale letterbox");
SetWindowMinSize(320, 240);
int gameScreenWidth = 640;
int gameScreenHeight = 480;
// Render texture initialization, used to hold the rendering result so we can easily resize it
RenderTexture2D target = LoadRenderTexture(gameScreenWidth, gameScreenHeight);
SetTextureFilter(target.texture, FILTER_BILINEAR); // Texture scale filter to use
Color colors[10] = { 0 };
for (int i = 0; i < 10; i++) colors[i] = (Color){ GetRandomValue(100, 250), GetRandomValue(50, 150), GetRandomValue(10, 100), 255 };
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// Compute required framebuffer scaling
float scale = min((float)GetScreenWidth()/gameScreenWidth, (float)GetScreenHeight()/gameScreenHeight);
// Update virtual mouse
//----------------------------------------------------------------------------------
Vector2 mouse = GetMousePosition();
mouse.x = (mouse.x - (GetScreenWidth() - (gameScreenWidth*scale))*0.5f)/scale;
mouse.y = (mouse.y - (GetScreenHeight() - (gameScreenHeight*scale))*0.5f)/scale;
// Clamp mouse value behind gamescreen
mouse = ClampValue(mouse, (Vector2){ 0, 0 }, (Vector2){ gameScreenWidth, gameScreenHeight });
//----------------------------------------------------------------------------------
if (IsKeyPressed(KEY_SPACE))
{
// Recalculate random colors for the bars
for (int i = 0; i < 10; i++) colors[i] = (Color){ GetRandomValue(100, 250), GetRandomValue(50, 150), GetRandomValue(10, 100), 255 };
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(BLACK);
// Draw everything in the render texture, note this will not be rendered on screen, yet
BeginTextureMode(target);
ClearBackground(RAYWHITE); // Clear render texture background color
for (int i = 0; i < 10; i++) DrawRectangle(0, (gameScreenHeight/10)*i, gameScreenWidth, gameScreenHeight/10, colors[i]);
DrawText("If executed inside a window,\nyou can resize the window,\nand see the screen scaling!", 10, 25, 20, WHITE);
DrawText( TextFormat("Virtual Mouse : %.0f , %.0f", mouse.x, mouse.y), 350, 25, 20, YELLOW);
EndTextureMode();
// Draw RenderTexture2D to window, properly scaled
DrawTexturePro(target.texture, (Rectangle){ 0.0f, 0.0f, (float)target.texture.width, (float)-target.texture.height },
(Rectangle){ (GetScreenWidth() - ((float)gameScreenWidth*scale))*0.5, (GetScreenHeight() - ((float)gameScreenHeight*scale))*0.5,
(float)gameScreenWidth*scale, (float)gameScreenHeight*scale }, (Vector2){ 0, 0 }, 0.0f, WHITE);
EndDrawing();
//--------------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadRenderTexture(target); // Unload render texture
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}