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-rw-r--r--docs/examples/web/physac/physics_friction.c181
1 files changed, 110 insertions, 71 deletions
diff --git a/docs/examples/web/physac/physics_friction.c b/docs/examples/web/physac/physics_friction.c
index db1b5f4c..d0156306 100644
--- a/docs/examples/web/physac/physics_friction.c
+++ b/docs/examples/web/physac/physics_friction.c
@@ -2,9 +2,11 @@
*
* Physac - Physics friction
*
-* NOTE: Physac requires multi-threading, when InitPhysics() a second thread is created to manage physics calculations.
+* NOTE 1: Physac requires multi-threading, when InitPhysics() a second thread is created to manage physics calculations.
+* NOTE 2: Physac requires static C library linkage to avoid dependency on MinGW DLL (-static -lpthread)
+*
+* Use the following line to compile:
*
-* Use the following code to compile (-static -lpthread):
* gcc -o $(NAME_PART).exe $(FILE_NAME) -s $(RAYLIB_DIR)\raylib\raylib_icon -static -lraylib -lpthread
* -lglfw3 -lopengl32 -lgdi32 -lopenal32 -lwinmm -std=c99 -Wl,--subsystem,windows -Wl,-allow-multiple-definition
*
@@ -15,29 +17,50 @@
#include "raylib.h"
#define PHYSAC_IMPLEMENTATION
-#include "../src/physac.h"
+#include "physac.h"
+
+#if defined(PLATFORM_WEB)
+ #include <emscripten/emscripten.h>
+#endif
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+int screenWidth = 800;
+int screenHeight = 450;
+
+// Physac logo drawing position
+int logoX = 0;
+int logoY = 15;
+
+PhysicsBody bodyA;
+PhysicsBody bodyB;
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void); // Update and Draw one frame
+
+//----------------------------------------------------------------------------------
+// Main Enry Point
+//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
- int screenWidth = 800;
- int screenHeight = 450;
-
SetConfigFlags(FLAG_MSAA_4X_HINT);
InitWindow(screenWidth, screenHeight, "Physac [raylib] - Physics friction");
- SetTargetFPS(60);
// Physac logo drawing position
- int logoX = screenWidth - MeasureText("Physac", 30) - 10;
- int logoY = 15;
+ logoX = screenWidth - MeasureText("Physac", 30) - 10;
// Initialize physics and default physics bodies
InitPhysics();
// Create floor rectangle physics body
- PhysicsBody floor = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2, screenHeight }, screenWidth, 100, 10);
- floor->enabled = false; // Disable body state to convert it to static (no dynamics, but collisions)
+ PhysicsBody ground = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2, screenHeight }, screenWidth, 100, 10);
+ ground->enabled = false; // Disable body state to convert it to static (no dynamics, but collisions)
+
PhysicsBody wall = CreatePhysicsBodyRectangle((Vector2){ screenWidth/2, screenHeight*0.8f }, 10, 80, 10);
wall->enabled = false; // Disable body state to convert it to static (no dynamics, but collisions)
@@ -52,88 +75,104 @@ int main()
SetPhysicsBodyRotation(rectRight, 330*DEG2RAD);
// Create dynamic physics bodies
- PhysicsBody bodyA = CreatePhysicsBodyRectangle((Vector2){ 35, screenHeight*0.6f }, 40, 40, 10);
+ bodyA = CreatePhysicsBodyRectangle((Vector2){ 35, screenHeight*0.6f }, 40, 40, 10);
bodyA->staticFriction = 0.1f;
bodyA->dynamicFriction = 0.1f;
SetPhysicsBodyRotation(bodyA, 30*DEG2RAD);
- PhysicsBody bodyB = CreatePhysicsBodyRectangle((Vector2){ screenWidth - 35, screenHeight*0.6f }, 40, 40, 10);
+ bodyB = CreatePhysicsBodyRectangle((Vector2){ screenWidth - 35, screenHeight*0.6f }, 40, 40, 10);
bodyB->staticFriction = 1;
bodyB->dynamicFriction = 1;
SetPhysicsBodyRotation(bodyB, 330*DEG2RAD);
- //--------------------------------------------------------------------------------------
+#if defined(PLATFORM_WEB)
+ emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
+#else
+ 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
- //----------------------------------------------------------------------------------
- if (IsKeyPressed('R')) // Reset physics input
- {
- // Reset dynamic physics bodies position, velocity and rotation
- bodyA->position = (Vector2){ 35, screenHeight*0.6f };
- bodyA->velocity = (Vector2){ 0, 0 };
- bodyA->angularVelocity = 0;
- SetPhysicsBodyRotation(bodyA, 30*DEG2RAD);
-
- bodyB->position = (Vector2){ screenWidth - 35, screenHeight*0.6f };
- bodyB->velocity = (Vector2){ 0, 0 };
- bodyB->angularVelocity = 0;
- SetPhysicsBodyRotation(bodyB, 330*DEG2RAD);
- }
- //----------------------------------------------------------------------------------
+ UpdateDrawFrame();
+ }
+#endif
- // Draw
- //----------------------------------------------------------------------------------
- BeginDrawing();
+ // De-Initialization
+ //--------------------------------------------------------------------------------------
+ ClosePhysics(); // Uninitialize physics
- ClearBackground(BLACK);
+ CloseWindow(); // Close window and OpenGL context
+ //--------------------------------------------------------------------------------------
- DrawFPS(screenWidth - 90, screenHeight - 30);
+ return 0;
+}
- // Draw created physics bodies
- int bodiesCount = GetPhysicsBodiesCount();
- for (int i = 0; i < bodiesCount; i++)
- {
- PhysicsBody body = GetPhysicsBody(i);
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void)
+{
+ // Update
+ //----------------------------------------------------------------------------------
+ if (IsKeyPressed('R')) // Reset physics input
+ {
+ // Reset dynamic physics bodies position, velocity and rotation
+ bodyA->position = (Vector2){ 35, screenHeight*0.6f };
+ bodyA->velocity = (Vector2){ 0, 0 };
+ bodyA->angularVelocity = 0;
+ SetPhysicsBodyRotation(bodyA, 30*DEG2RAD);
+
+ bodyB->position = (Vector2){ screenWidth - 35, screenHeight*0.6f };
+ bodyB->velocity = (Vector2){ 0, 0 };
+ bodyB->angularVelocity = 0;
+ SetPhysicsBodyRotation(bodyB, 330*DEG2RAD);
+ }
+ //----------------------------------------------------------------------------------
+
+ // Draw
+ //----------------------------------------------------------------------------------
+ BeginDrawing();
+
+ ClearBackground(BLACK);
+
+ DrawFPS(screenWidth - 90, screenHeight - 30);
- if (body != NULL)
+ // Draw created physics bodies
+ int bodiesCount = GetPhysicsBodiesCount();
+ for (int i = 0; i < bodiesCount; i++)
+ {
+ PhysicsBody body = GetPhysicsBody(i);
+
+ if (body != NULL)
+ {
+ int vertexCount = GetPhysicsShapeVerticesCount(i);
+ for (int j = 0; j < vertexCount; j++)
{
- int vertexCount = GetPhysicsShapeVerticesCount(i);
- for (int j = 0; j < vertexCount; j++)
- {
- // Get physics bodies shape vertices to draw lines
- // Note: GetPhysicsShapeVertex() already calculates rotation transformations
- Vector2 vertexA = GetPhysicsShapeVertex(body, j);
-
- int jj = (((j + 1) < vertexCount) ? (j + 1) : 0); // Get next vertex or first to close the shape
- Vector2 vertexB = GetPhysicsShapeVertex(body, jj);
-
- DrawLineV(vertexA, vertexB, GREEN); // Draw a line between two vertex positions
- }
- }
- }
+ // Get physics bodies shape vertices to draw lines
+ // Note: GetPhysicsShapeVertex() already calculates rotation transformations
+ Vector2 vertexA = GetPhysicsShapeVertex(body, j);
- DrawRectangle(0, screenHeight - 49, screenWidth, 49, BLACK);
+ int jj = (((j + 1) < vertexCount) ? (j + 1) : 0); // Get next vertex or first to close the shape
+ Vector2 vertexB = GetPhysicsShapeVertex(body, jj);
- DrawText("Friction amount", (screenWidth - MeasureText("Friction amount", 30))/2, 75, 30, WHITE);
- DrawText("0.1", bodyA->position.x - MeasureText("0.1", 20)/2, bodyA->position.y - 7, 20, WHITE);
- DrawText("1", bodyB->position.x - MeasureText("1", 20)/2, bodyB->position.y - 7, 20, WHITE);
+ DrawLineV(vertexA, vertexB, GREEN); // Draw a line between two vertex positions
+ }
+ }
+ }
- DrawText("Press 'R' to reset example", 10, 10, 10, WHITE);
+ DrawRectangle(0, screenHeight - 49, screenWidth, 49, BLACK);
- DrawText("Physac", logoX, logoY, 30, WHITE);
- DrawText("Powered by", logoX + 50, logoY - 7, 10, WHITE);
+ DrawText("Friction amount", (screenWidth - MeasureText("Friction amount", 30))/2, 75, 30, WHITE);
+ DrawText("0.1", bodyA->position.x - MeasureText("0.1", 20)/2, bodyA->position.y - 7, 20, WHITE);
+ DrawText("1", bodyB->position.x - MeasureText("1", 20)/2, bodyB->position.y - 7, 20, WHITE);
- EndDrawing();
- //----------------------------------------------------------------------------------
- }
+ DrawText("Press 'R' to reset example", 10, 10, 10, WHITE);
- // De-Initialization
- //--------------------------------------------------------------------------------------
- ClosePhysics(); // Unitialize physics
- CloseWindow(); // Close window and OpenGL context
- //--------------------------------------------------------------------------------------
+ DrawText("Physac", logoX, logoY, 30, WHITE);
+ DrawText("Powered by", logoX + 50, logoY - 7, 10, WHITE);
- return 0;
+ EndDrawing();
+ //----------------------------------------------------------------------------------
}
+
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